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// dear imgui, v1.91.9 WIP

// (drawing and font code)

/*

Index of this file:

// [SECTION] STB libraries implementation

// [SECTION] Style functions

// [SECTION] ImDrawList

// [SECTION] ImTriangulator, ImDrawList concave polygon fill

// [SECTION] ImDrawListSplitter

// [SECTION] ImDrawData

// [SECTION] Helpers ShadeVertsXXX functions

// [SECTION] ImFontConfig

// [SECTION] ImFontAtlas

// [SECTION] ImFontAtlas: glyph ranges helpers

// [SECTION] ImFontGlyphRangesBuilder

// [SECTION] ImFont

// [SECTION] ImGui Internal Render Helpers

// [SECTION] Decompression code

// [SECTION] Default font data (ProggyClean.ttf)

*/

#if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_WARNINGS)

#define _CRT_SECURE_NO_WARNINGS

#endif

#ifndef IMGUI_DEFINE_MATH_OPERATORS

#define IMGUI_DEFINE_MATH_OPERATORS

#endif

#include "imgui.h"

#ifndef IMGUI_DISABLE

#include "imgui_internal.h"

#ifdef IMGUI_ENABLE_FREETYPE

#include "misc/freetype/imgui_freetype.h"

#endif

#include <stdio.h> // vsnprintf, sscanf, printf

// Visual Studio warnings

#ifdef _MSC_VER

#pragma warning (disable: 4127) // condition expression is constant

#pragma warning (disable: 4505) // unreferenced local function has been removed (stb stuff)

#pragma warning (disable: 4996) // 'This function or variable may be unsafe': strcpy, strdup, sprintf, vsnprintf, sscanf, fopen

#pragma warning (disable: 26451) // [Static Analyzer] Arithmetic overflow : Using operator 'xxx' on a 4 byte value and then casting the result to a 8 byte value. Cast the value to the wider type before calling operator 'xxx' to avoid overflow(io.2).

#pragma warning (disable: 26812) // [Static Analyzer] The enum type 'xxx' is unscoped. Prefer 'enum class' over 'enum' (Enum.3). [MSVC Static Analyzer)

#endif

// Clang/GCC warnings with -Weverything

#if defined(__clang__)

#if __has_warning("-Wunknown-warning-option")

#pragma clang diagnostic ignored "-Wunknown-warning-option" // warning: unknown warning group 'xxx' // not all warnings are known by all Clang versions and they tend to be rename-happy.. so ignoring warnings triggers new warnings on some configuration. Great!

#endif

#pragma clang diagnostic ignored "-Wunknown-pragmas" // warning: unknown warning group 'xxx'

#pragma clang diagnostic ignored "-Wold-style-cast" // warning: use of old-style cast // yes, they are more terse.

#pragma clang diagnostic ignored "-Wfloat-equal" // warning: comparing floating point with == or != is unsafe // storing and comparing against same constants ok.

#pragma clang diagnostic ignored "-Wglobal-constructors" // warning: declaration requires a global destructor // similar to above, not sure what the exact difference is.

#pragma clang diagnostic ignored "-Wsign-conversion" // warning: implicit conversion changes signedness

#pragma clang diagnostic ignored "-Wzero-as-null-pointer-constant" // warning: zero as null pointer constant // some standard header variations use #define NULL 0

#pragma clang diagnostic ignored "-Wcomma" // warning: possible misuse of comma operator here

#pragma clang diagnostic ignored "-Wreserved-id-macro" // warning: macro name is a reserved identifier

#pragma clang diagnostic ignored "-Wdouble-promotion" // warning: implicit conversion from 'float' to 'double' when passing argument to function // using printf() is a misery with this as C++ va_arg ellipsis changes float to double.

#pragma clang diagnostic ignored "-Wimplicit-int-float-conversion" // warning: implicit conversion from 'xxx' to 'float' may lose precision

#pragma clang diagnostic ignored "-Wreserved-identifier" // warning: identifier '_Xxx' is reserved because it starts with '_' followed by a capital letter

#pragma clang diagnostic ignored "-Wunsafe-buffer-usage" // warning: 'xxx' is an unsafe pointer used for buffer access

#pragma clang diagnostic ignored "-Wnontrivial-memaccess" // warning: first argument in call to 'memset' is a pointer to non-trivially copyable type

#pragma clang diagnostic ignored "-Wcast-qual" // warning: cast from 'const xxxx *' to 'xxx *' drops const qualifier

#elif defined(__GNUC__)

#pragma GCC diagnostic ignored "-Wpragmas" // warning: unknown option after '#pragma GCC diagnostic' kind

#pragma GCC diagnostic ignored "-Wunused-function" // warning: 'xxxx' defined but not used

#pragma GCC diagnostic ignored "-Wfloat-equal" // warning: comparing floating-point with '==' or '!=' is unsafe

#pragma GCC diagnostic ignored "-Wdouble-promotion" // warning: implicit conversion from 'float' to 'double' when passing argument to function

#pragma GCC diagnostic ignored "-Wconversion" // warning: conversion to 'xxxx' from 'xxxx' may alter its value

#pragma GCC diagnostic ignored "-Wstack-protector" // warning: stack protector not protecting local variables: variable length buffer

#pragma GCC diagnostic ignored "-Wstrict-overflow" // warning: assuming signed overflow does not occur when simplifying division / ..when changing X +- C1 cmp C2 to X cmp C2 -+ C1

#pragma GCC diagnostic ignored "-Wclass-memaccess" // [__GNUC__ >= 8] warning: 'memset/memcpy' clearing/writing an object of type 'xxxx' with no trivial copy-assignment; use assignment or value-initialization instead

#pragma GCC diagnostic ignored "-Wcast-qual" // warning: cast from type 'const xxxx *' to type 'xxxx *' casts away qualifiers

#endif

//-------------------------------------------------------------------------

// [SECTION] STB libraries implementation (for stb_truetype and stb_rect_pack)

//-------------------------------------------------------------------------

// Compile time options:

//#define IMGUI_STB_NAMESPACE ImStb

//#define IMGUI_STB_TRUETYPE_FILENAME "my_folder/stb_truetype.h"

//#define IMGUI_STB_RECT_PACK_FILENAME "my_folder/stb_rect_pack.h"

//#define IMGUI_DISABLE_STB_TRUETYPE_IMPLEMENTATION

//#define IMGUI_DISABLE_STB_RECT_PACK_IMPLEMENTATION

#ifdef IMGUI_STB_NAMESPACE

namespace IMGUI_STB_NAMESPACE

{

#endif

#ifdef _MSC_VER

#pragma warning (push)

#pragma warning (disable: 4456) // declaration of 'xx' hides previous local declaration

#pragma warning (disable: 6011) // (stb_rectpack) Dereferencing NULL pointer 'cur->next'.

#pragma warning (disable: 6385) // (stb_truetype) Reading invalid data from 'buffer': the readable size is '_Old_3`kernel_width' bytes, but '3' bytes may be read.

#pragma warning (disable: 28182) // (stb_rectpack) Dereferencing NULL pointer. 'cur' contains the same NULL value as 'cur->next' did.

#endif

#if defined(__clang__)

#pragma clang diagnostic push

#pragma clang diagnostic ignored "-Wunused-function" // warning: 'xxxx' defined but not used

#pragma clang diagnostic ignored "-Wmissing-prototypes"

#pragma clang diagnostic ignored "-Wimplicit-fallthrough"

#endif

#if defined(__GNUC__)

#pragma GCC diagnostic push

#pragma GCC diagnostic ignored "-Wtype-limits" // warning: comparison is always true due to limited range of data type [-Wtype-limits]

#pragma GCC diagnostic ignored "-Wimplicit-fallthrough" // warning: this statement may fall through

#endif

#ifndef STB_RECT_PACK_IMPLEMENTATION // in case the user already have an implementation in the _same_ compilation unit (e.g. unity builds)

#ifndef IMGUI_DISABLE_STB_RECT_PACK_IMPLEMENTATION // in case the user already have an implementation in another compilation unit

#define STBRP_STATIC

#define STBRP_ASSERT(x) do { IM_ASSERT(x); } while (0)

#define STBRP_SORT ImQsort

#define STB_RECT_PACK_IMPLEMENTATION

#endif

#ifdef IMGUI_STB_RECT_PACK_FILENAME

#include IMGUI_STB_RECT_PACK_FILENAME

#else

#include "imstb_rectpack.h"

#endif

#ifdef IMGUI_ENABLE_STB_TRUETYPE

#ifndef STB_TRUETYPE_IMPLEMENTATION // in case the user already have an implementation in the _same_ compilation unit (e.g. unity builds)

#ifndef IMGUI_DISABLE_STB_TRUETYPE_IMPLEMENTATION // in case the user already have an implementation in another compilation unit

#define STBTT_malloc(x,u) ((void)(u), IM_ALLOC(x))

#define STBTT_free(x,u) ((void)(u), IM_FREE(x))

#define STBTT_assert(x) do { IM_ASSERT(x); } while(0)

#define STBTT_fmod(x,y) ImFmod(x,y)

#define STBTT_sqrt(x) ImSqrt(x)

#define STBTT_pow(x,y) ImPow(x,y)

#define STBTT_fabs(x) ImFabs(x)

#define STBTT_ifloor(x) ((int)ImFloor(x))

#define STBTT_iceil(x) ((int)ImCeil(x))

#define STBTT_STATIC

#define STB_TRUETYPE_IMPLEMENTATION

#else

#define STBTT_DEF extern

#endif

#ifdef IMGUI_STB_TRUETYPE_FILENAME

#include IMGUI_STB_TRUETYPE_FILENAME

#else

#include "imstb_truetype.h"

#endif

#endif // IMGUI_ENABLE_STB_TRUETYPE

#if defined(__GNUC__)

#pragma GCC diagnostic pop

#endif

#if defined(__clang__)

#pragma clang diagnostic pop

#endif

#if defined(_MSC_VER)

#pragma warning (pop)

#endif

#ifdef IMGUI_STB_NAMESPACE

} // namespace ImStb

using namespace IMGUI_STB_NAMESPACE;

#endif

//-----------------------------------------------------------------------------

// [SECTION] Style functions

//-----------------------------------------------------------------------------

void ImGui::StyleColorsDark(ImGuiStyle* dst)

{

ImGuiStyle* style = dst ? dst : &ImGui::GetStyle();

ImVec4* colors = style->Colors;

colors[ImGuiCol_Text] = ImVec4(1.00f, 1.00f, 1.00f, 1.00f);

colors[ImGuiCol_TextDisabled] = ImVec4(0.50f, 0.50f, 0.50f, 1.00f);

colors[ImGuiCol_WindowBg] = ImVec4(0.06f, 0.06f, 0.06f, 0.94f);

colors[ImGuiCol_ChildBg] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);

colors[ImGuiCol_PopupBg] = ImVec4(0.08f, 0.08f, 0.08f, 0.94f);

colors[ImGuiCol_Border] = ImVec4(0.43f, 0.43f, 0.50f, 0.50f);

colors[ImGuiCol_BorderShadow] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);

colors[ImGuiCol_FrameBg] = ImVec4(0.16f, 0.29f, 0.48f, 0.54f);

colors[ImGuiCol_FrameBgHovered] = ImVec4(0.26f, 0.59f, 0.98f, 0.40f);

colors[ImGuiCol_FrameBgActive] = ImVec4(0.26f, 0.59f, 0.98f, 0.67f);

colors[ImGuiCol_TitleBg] = ImVec4(0.04f, 0.04f, 0.04f, 1.00f);

colors[ImGuiCol_TitleBgActive] = ImVec4(0.16f, 0.29f, 0.48f, 1.00f);

colors[ImGuiCol_TitleBgCollapsed] = ImVec4(0.00f, 0.00f, 0.00f, 0.51f);

colors[ImGuiCol_MenuBarBg] = ImVec4(0.14f, 0.14f, 0.14f, 1.00f);

colors[ImGuiCol_ScrollbarBg] = ImVec4(0.02f, 0.02f, 0.02f, 0.53f);

colors[ImGuiCol_ScrollbarGrab] = ImVec4(0.31f, 0.31f, 0.31f, 1.00f);

colors[ImGuiCol_ScrollbarGrabHovered] = ImVec4(0.41f, 0.41f, 0.41f, 1.00f);

colors[ImGuiCol_ScrollbarGrabActive] = ImVec4(0.51f, 0.51f, 0.51f, 1.00f);

colors[ImGuiCol_CheckMark] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);

colors[ImGuiCol_SliderGrab] = ImVec4(0.24f, 0.52f, 0.88f, 1.00f);

colors[ImGuiCol_SliderGrabActive] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);

colors[ImGuiCol_Button] = ImVec4(0.26f, 0.59f, 0.98f, 0.40f);

colors[ImGuiCol_ButtonHovered] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);

colors[ImGuiCol_ButtonActive] = ImVec4(0.06f, 0.53f, 0.98f, 1.00f);

colors[ImGuiCol_Header] = ImVec4(0.26f, 0.59f, 0.98f, 0.31f);

colors[ImGuiCol_HeaderHovered] = ImVec4(0.26f, 0.59f, 0.98f, 0.80f);

colors[ImGuiCol_HeaderActive] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);

colors[ImGuiCol_Separator] = colors[ImGuiCol_Border];

colors[ImGuiCol_SeparatorHovered] = ImVec4(0.10f, 0.40f, 0.75f, 0.78f);

colors[ImGuiCol_SeparatorActive] = ImVec4(0.10f, 0.40f, 0.75f, 1.00f);

colors[ImGuiCol_ResizeGrip] = ImVec4(0.26f, 0.59f, 0.98f, 0.20f);

colors[ImGuiCol_ResizeGripHovered] = ImVec4(0.26f, 0.59f, 0.98f, 0.67f);

colors[ImGuiCol_ResizeGripActive] = ImVec4(0.26f, 0.59f, 0.98f, 0.95f);

colors[ImGuiCol_TabHovered] = colors[ImGuiCol_HeaderHovered];

colors[ImGuiCol_Tab] = ImLerp(colors[ImGuiCol_Header], colors[ImGuiCol_TitleBgActive], 0.80f);

colors[ImGuiCol_TabSelected] = ImLerp(colors[ImGuiCol_HeaderActive], colors[ImGuiCol_TitleBgActive], 0.60f);

colors[ImGuiCol_TabSelectedOverline] = colors[ImGuiCol_HeaderActive];

colors[ImGuiCol_TabDimmed] = ImLerp(colors[ImGuiCol_Tab], colors[ImGuiCol_TitleBg], 0.80f);

colors[ImGuiCol_TabDimmedSelected] = ImLerp(colors[ImGuiCol_TabSelected], colors[ImGuiCol_TitleBg], 0.40f);

colors[ImGuiCol_TabDimmedSelectedOverline] = ImVec4(0.50f, 0.50f, 0.50f, 0.00f);

colors[ImGuiCol_PlotLines] = ImVec4(0.61f, 0.61f, 0.61f, 1.00f);

colors[ImGuiCol_PlotLinesHovered] = ImVec4(1.00f, 0.43f, 0.35f, 1.00f);

colors[ImGuiCol_PlotHistogram] = ImVec4(0.90f, 0.70f, 0.00f, 1.00f);

colors[ImGuiCol_PlotHistogramHovered] = ImVec4(1.00f, 0.60f, 0.00f, 1.00f);

colors[ImGuiCol_TableHeaderBg] = ImVec4(0.19f, 0.19f, 0.20f, 1.00f);

colors[ImGuiCol_TableBorderStrong] = ImVec4(0.31f, 0.31f, 0.35f, 1.00f); // Prefer using Alpha=1.0 here

colors[ImGuiCol_TableBorderLight] = ImVec4(0.23f, 0.23f, 0.25f, 1.00f); // Prefer using Alpha=1.0 here

colors[ImGuiCol_TableRowBg] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);

colors[ImGuiCol_TableRowBgAlt] = ImVec4(1.00f, 1.00f, 1.00f, 0.06f);

colors[ImGuiCol_TextLink] = colors[ImGuiCol_HeaderActive];

colors[ImGuiCol_TextSelectedBg] = ImVec4(0.26f, 0.59f, 0.98f, 0.35f);

colors[ImGuiCol_DragDropTarget] = ImVec4(1.00f, 1.00f, 0.00f, 0.90f);

colors[ImGuiCol_NavCursor] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);

colors[ImGuiCol_NavWindowingHighlight] = ImVec4(1.00f, 1.00f, 1.00f, 0.70f);

colors[ImGuiCol_NavWindowingDimBg] = ImVec4(0.80f, 0.80f, 0.80f, 0.20f);

colors[ImGuiCol_ModalWindowDimBg] = ImVec4(0.80f, 0.80f, 0.80f, 0.35f);

}

void ImGui::StyleColorsClassic(ImGuiStyle* dst)

{

ImGuiStyle* style = dst ? dst : &ImGui::GetStyle();

ImVec4* colors = style->Colors;

colors[ImGuiCol_Text] = ImVec4(0.90f, 0.90f, 0.90f, 1.00f);

colors[ImGuiCol_TextDisabled] = ImVec4(0.60f, 0.60f, 0.60f, 1.00f);

colors[ImGuiCol_WindowBg] = ImVec4(0.00f, 0.00f, 0.00f, 0.85f);

colors[ImGuiCol_ChildBg] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);

colors[ImGuiCol_PopupBg] = ImVec4(0.11f, 0.11f, 0.14f, 0.92f);

colors[ImGuiCol_Border] = ImVec4(0.50f, 0.50f, 0.50f, 0.50f);

colors[ImGuiCol_BorderShadow] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);

colors[ImGuiCol_FrameBg] = ImVec4(0.43f, 0.43f, 0.43f, 0.39f);

colors[ImGuiCol_FrameBgHovered] = ImVec4(0.47f, 0.47f, 0.69f, 0.40f);

colors[ImGuiCol_FrameBgActive] = ImVec4(0.42f, 0.41f, 0.64f, 0.69f);

colors[ImGuiCol_TitleBg] = ImVec4(0.27f, 0.27f, 0.54f, 0.83f);

colors[ImGuiCol_TitleBgActive] = ImVec4(0.32f, 0.32f, 0.63f, 0.87f);

colors[ImGuiCol_TitleBgCollapsed] = ImVec4(0.40f, 0.40f, 0.80f, 0.20f);

colors[ImGuiCol_MenuBarBg] = ImVec4(0.40f, 0.40f, 0.55f, 0.80f);

colors[ImGuiCol_ScrollbarBg] = ImVec4(0.20f, 0.25f, 0.30f, 0.60f);

colors[ImGuiCol_ScrollbarGrab] = ImVec4(0.40f, 0.40f, 0.80f, 0.30f);

colors[ImGuiCol_ScrollbarGrabHovered] = ImVec4(0.40f, 0.40f, 0.80f, 0.40f);

colors[ImGuiCol_ScrollbarGrabActive] = ImVec4(0.41f, 0.39f, 0.80f, 0.60f);

colors[ImGuiCol_CheckMark] = ImVec4(0.90f, 0.90f, 0.90f, 0.50f);

colors[ImGuiCol_SliderGrab] = ImVec4(1.00f, 1.00f, 1.00f, 0.30f);

colors[ImGuiCol_SliderGrabActive] = ImVec4(0.41f, 0.39f, 0.80f, 0.60f);

colors[ImGuiCol_Button] = ImVec4(0.35f, 0.40f, 0.61f, 0.62f);

colors[ImGuiCol_ButtonHovered] = ImVec4(0.40f, 0.48f, 0.71f, 0.79f);

colors[ImGuiCol_ButtonActive] = ImVec4(0.46f, 0.54f, 0.80f, 1.00f);

colors[ImGuiCol_Header] = ImVec4(0.40f, 0.40f, 0.90f, 0.45f);

colors[ImGuiCol_HeaderHovered] = ImVec4(0.45f, 0.45f, 0.90f, 0.80f);

colors[ImGuiCol_HeaderActive] = ImVec4(0.53f, 0.53f, 0.87f, 0.80f);

colors[ImGuiCol_Separator] = ImVec4(0.50f, 0.50f, 0.50f, 0.60f);

colors[ImGuiCol_SeparatorHovered] = ImVec4(0.60f, 0.60f, 0.70f, 1.00f);

colors[ImGuiCol_SeparatorActive] = ImVec4(0.70f, 0.70f, 0.90f, 1.00f);

colors[ImGuiCol_ResizeGrip] = ImVec4(1.00f, 1.00f, 1.00f, 0.10f);

colors[ImGuiCol_ResizeGripHovered] = ImVec4(0.78f, 0.82f, 1.00f, 0.60f);

colors[ImGuiCol_ResizeGripActive] = ImVec4(0.78f, 0.82f, 1.00f, 0.90f);

colors[ImGuiCol_TabHovered] = colors[ImGuiCol_HeaderHovered];

colors[ImGuiCol_Tab] = ImLerp(colors[ImGuiCol_Header], colors[ImGuiCol_TitleBgActive], 0.80f);

colors[ImGuiCol_TabSelected] = ImLerp(colors[ImGuiCol_HeaderActive], colors[ImGuiCol_TitleBgActive], 0.60f);

colors[ImGuiCol_TabSelectedOverline] = colors[ImGuiCol_HeaderActive];

colors[ImGuiCol_TabDimmed] = ImLerp(colors[ImGuiCol_Tab], colors[ImGuiCol_TitleBg], 0.80f);

colors[ImGuiCol_TabDimmedSelected] = ImLerp(colors[ImGuiCol_TabSelected], colors[ImGuiCol_TitleBg], 0.40f);

colors[ImGuiCol_TabDimmedSelectedOverline] = ImVec4(0.53f, 0.53f, 0.87f, 0.00f);

colors[ImGuiCol_PlotLines] = ImVec4(1.00f, 1.00f, 1.00f, 1.00f);

colors[ImGuiCol_PlotLinesHovered] = ImVec4(0.90f, 0.70f, 0.00f, 1.00f);

colors[ImGuiCol_PlotHistogram] = ImVec4(0.90f, 0.70f, 0.00f, 1.00f);

colors[ImGuiCol_PlotHistogramHovered] = ImVec4(1.00f, 0.60f, 0.00f, 1.00f);

colors[ImGuiCol_TableHeaderBg] = ImVec4(0.27f, 0.27f, 0.38f, 1.00f);

colors[ImGuiCol_TableBorderStrong] = ImVec4(0.31f, 0.31f, 0.45f, 1.00f); // Prefer using Alpha=1.0 here

colors[ImGuiCol_TableBorderLight] = ImVec4(0.26f, 0.26f, 0.28f, 1.00f); // Prefer using Alpha=1.0 here

colors[ImGuiCol_TableRowBg] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);

colors[ImGuiCol_TableRowBgAlt] = ImVec4(1.00f, 1.00f, 1.00f, 0.07f);

colors[ImGuiCol_TextLink] = colors[ImGuiCol_HeaderActive];

colors[ImGuiCol_TextSelectedBg] = ImVec4(0.00f, 0.00f, 1.00f, 0.35f);

colors[ImGuiCol_DragDropTarget] = ImVec4(1.00f, 1.00f, 0.00f, 0.90f);

colors[ImGuiCol_NavCursor] = colors[ImGuiCol_HeaderHovered];

colors[ImGuiCol_NavWindowingHighlight] = ImVec4(1.00f, 1.00f, 1.00f, 0.70f);

colors[ImGuiCol_NavWindowingDimBg] = ImVec4(0.80f, 0.80f, 0.80f, 0.20f);

colors[ImGuiCol_ModalWindowDimBg] = ImVec4(0.20f, 0.20f, 0.20f, 0.35f);

}

// Those light colors are better suited with a thicker font than the default one + FrameBorder

void ImGui::StyleColorsLight(ImGuiStyle* dst)

{

ImGuiStyle* style = dst ? dst : &ImGui::GetStyle();

ImVec4* colors = style->Colors;

colors[ImGuiCol_Text] = ImVec4(0.00f, 0.00f, 0.00f, 1.00f);

colors[ImGuiCol_TextDisabled] = ImVec4(0.60f, 0.60f, 0.60f, 1.00f);

colors[ImGuiCol_WindowBg] = ImVec4(0.94f, 0.94f, 0.94f, 1.00f);

colors[ImGuiCol_ChildBg] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);

colors[ImGuiCol_PopupBg] = ImVec4(1.00f, 1.00f, 1.00f, 0.98f);

colors[ImGuiCol_Border] = ImVec4(0.00f, 0.00f, 0.00f, 0.30f);

colors[ImGuiCol_BorderShadow] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);

colors[ImGuiCol_FrameBg] = ImVec4(1.00f, 1.00f, 1.00f, 1.00f);

colors[ImGuiCol_FrameBgHovered] = ImVec4(0.26f, 0.59f, 0.98f, 0.40f);

colors[ImGuiCol_FrameBgActive] = ImVec4(0.26f, 0.59f, 0.98f, 0.67f);

colors[ImGuiCol_TitleBg] = ImVec4(0.96f, 0.96f, 0.96f, 1.00f);

colors[ImGuiCol_TitleBgActive] = ImVec4(0.82f, 0.82f, 0.82f, 1.00f);

colors[ImGuiCol_TitleBgCollapsed] = ImVec4(1.00f, 1.00f, 1.00f, 0.51f);

colors[ImGuiCol_MenuBarBg] = ImVec4(0.86f, 0.86f, 0.86f, 1.00f);

colors[ImGuiCol_ScrollbarBg] = ImVec4(0.98f, 0.98f, 0.98f, 0.53f);

colors[ImGuiCol_ScrollbarGrab] = ImVec4(0.69f, 0.69f, 0.69f, 0.80f);

colors[ImGuiCol_ScrollbarGrabHovered] = ImVec4(0.49f, 0.49f, 0.49f, 0.80f);

colors[ImGuiCol_ScrollbarGrabActive] = ImVec4(0.49f, 0.49f, 0.49f, 1.00f);

colors[ImGuiCol_CheckMark] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);

colors[ImGuiCol_SliderGrab] = ImVec4(0.26f, 0.59f, 0.98f, 0.78f);

colors[ImGuiCol_SliderGrabActive] = ImVec4(0.46f, 0.54f, 0.80f, 0.60f);

colors[ImGuiCol_Button] = ImVec4(0.26f, 0.59f, 0.98f, 0.40f);

colors[ImGuiCol_ButtonHovered] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);

colors[ImGuiCol_ButtonActive] = ImVec4(0.06f, 0.53f, 0.98f, 1.00f);

colors[ImGuiCol_Header] = ImVec4(0.26f, 0.59f, 0.98f, 0.31f);

colors[ImGuiCol_HeaderHovered] = ImVec4(0.26f, 0.59f, 0.98f, 0.80f);

colors[ImGuiCol_HeaderActive] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);

colors[ImGuiCol_Separator] = ImVec4(0.39f, 0.39f, 0.39f, 0.62f);

colors[ImGuiCol_SeparatorHovered] = ImVec4(0.14f, 0.44f, 0.80f, 0.78f);

colors[ImGuiCol_SeparatorActive] = ImVec4(0.14f, 0.44f, 0.80f, 1.00f);

colors[ImGuiCol_ResizeGrip] = ImVec4(0.35f, 0.35f, 0.35f, 0.17f);

colors[ImGuiCol_ResizeGripHovered] = ImVec4(0.26f, 0.59f, 0.98f, 0.67f);

colors[ImGuiCol_ResizeGripActive] = ImVec4(0.26f, 0.59f, 0.98f, 0.95f);

colors[ImGuiCol_TabHovered] = colors[ImGuiCol_HeaderHovered];

colors[ImGuiCol_Tab] = ImLerp(colors[ImGuiCol_Header], colors[ImGuiCol_TitleBgActive], 0.90f);

colors[ImGuiCol_TabSelected] = ImLerp(colors[ImGuiCol_HeaderActive], colors[ImGuiCol_TitleBgActive], 0.60f);

colors[ImGuiCol_TabSelectedOverline] = colors[ImGuiCol_HeaderActive];

colors[ImGuiCol_TabDimmed] = ImLerp(colors[ImGuiCol_Tab], colors[ImGuiCol_TitleBg], 0.80f);

colors[ImGuiCol_TabDimmedSelected] = ImLerp(colors[ImGuiCol_TabSelected], colors[ImGuiCol_TitleBg], 0.40f);

colors[ImGuiCol_TabDimmedSelectedOverline] = ImVec4(0.26f, 0.59f, 1.00f, 0.00f);

colors[ImGuiCol_PlotLines] = ImVec4(0.39f, 0.39f, 0.39f, 1.00f);

colors[ImGuiCol_PlotLinesHovered] = ImVec4(1.00f, 0.43f, 0.35f, 1.00f);

colors[ImGuiCol_PlotHistogram] = ImVec4(0.90f, 0.70f, 0.00f, 1.00f);

colors[ImGuiCol_PlotHistogramHovered] = ImVec4(1.00f, 0.45f, 0.00f, 1.00f);

colors[ImGuiCol_TableHeaderBg] = ImVec4(0.78f, 0.87f, 0.98f, 1.00f);

colors[ImGuiCol_TableBorderStrong] = ImVec4(0.57f, 0.57f, 0.64f, 1.00f); // Prefer using Alpha=1.0 here

colors[ImGuiCol_TableBorderLight] = ImVec4(0.68f, 0.68f, 0.74f, 1.00f); // Prefer using Alpha=1.0 here

colors[ImGuiCol_TableRowBg] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);

colors[ImGuiCol_TableRowBgAlt] = ImVec4(0.30f, 0.30f, 0.30f, 0.09f);

colors[ImGuiCol_TextLink] = colors[ImGuiCol_HeaderActive];

colors[ImGuiCol_TextSelectedBg] = ImVec4(0.26f, 0.59f, 0.98f, 0.35f);

colors[ImGuiCol_DragDropTarget] = ImVec4(0.26f, 0.59f, 0.98f, 0.95f);

colors[ImGuiCol_NavCursor] = colors[ImGuiCol_HeaderHovered];

colors[ImGuiCol_NavWindowingHighlight] = ImVec4(0.70f, 0.70f, 0.70f, 0.70f);

colors[ImGuiCol_NavWindowingDimBg] = ImVec4(0.20f, 0.20f, 0.20f, 0.20f);

colors[ImGuiCol_ModalWindowDimBg] = ImVec4(0.20f, 0.20f, 0.20f, 0.35f);

}

//-----------------------------------------------------------------------------

// [SECTION] ImDrawList

//-----------------------------------------------------------------------------

ImDrawListSharedData::ImDrawListSharedData()

{

memset(this, 0, sizeof(*this));

InitialFringeScale = 1.0f;

for (int i = 0; i < IM_ARRAYSIZE(ArcFastVtx); i++)

{

const float a = ((float)i * 2 * IM_PI) / (float)IM_ARRAYSIZE(ArcFastVtx);

ArcFastVtx[i] = ImVec2(ImCos(a), ImSin(a));

}

ArcFastRadiusCutoff = IM_DRAWLIST_CIRCLE_AUTO_SEGMENT_CALC_R(IM_DRAWLIST_ARCFAST_SAMPLE_MAX, CircleSegmentMaxError);

}

void ImDrawListSharedData::SetCircleTessellationMaxError(float max_error)

{

if (CircleSegmentMaxError == max_error)

return;

IM_ASSERT(max_error > 0.0f);

CircleSegmentMaxError = max_error;

for (int i = 0; i < IM_ARRAYSIZE(CircleSegmentCounts); i++)

{

const float radius = (float)i;

CircleSegmentCounts[i] = (ImU8)((i > 0) ? IM_DRAWLIST_CIRCLE_AUTO_SEGMENT_CALC(radius, CircleSegmentMaxError) : IM_DRAWLIST_ARCFAST_SAMPLE_MAX);

}

ArcFastRadiusCutoff = IM_DRAWLIST_CIRCLE_AUTO_SEGMENT_CALC_R(IM_DRAWLIST_ARCFAST_SAMPLE_MAX, CircleSegmentMaxError);

}

ImDrawList::ImDrawList(ImDrawListSharedData* shared_data)

{

memset(this, 0, sizeof(*this));

_Data = shared_data;

}

ImDrawList::~ImDrawList()

{

_ClearFreeMemory();

}

// Initialize before use in a new frame. We always have a command ready in the buffer.

// In the majority of cases, you would want to call PushClipRect() and PushTextureID() after this.

void ImDrawList::_ResetForNewFrame()

{

// Verify that the ImDrawCmd fields we want to memcmp() are contiguous in memory.

IM_STATIC_ASSERT(offsetof(ImDrawCmd, ClipRect) == 0);

IM_STATIC_ASSERT(offsetof(ImDrawCmd, TextureId) == sizeof(ImVec4));

IM_STATIC_ASSERT(offsetof(ImDrawCmd, VtxOffset) == sizeof(ImVec4) + sizeof(ImTextureID));

if (_Splitter._Count > 1)

_Splitter.Merge(this);

CmdBuffer.resize(0);

IdxBuffer.resize(0);

VtxBuffer.resize(0);

Flags = _Data->InitialFlags;

memset(&_CmdHeader, 0, sizeof(_CmdHeader));

_VtxCurrentIdx = 0;

_VtxWritePtr = NULL;

_IdxWritePtr = NULL;

_ClipRectStack.resize(0);

_TextureIdStack.resize(0);

_CallbacksDataBuf.resize(0);

_Path.resize(0);

_Splitter.Clear();

CmdBuffer.push_back(ImDrawCmd());

_FringeScale = _Data->InitialFringeScale;

}

void ImDrawList::_ClearFreeMemory()

{

CmdBuffer.clear();

IdxBuffer.clear();

VtxBuffer.clear();

Flags = ImDrawListFlags_None;

_VtxCurrentIdx = 0;

_VtxWritePtr = NULL;

_IdxWritePtr = NULL;

_ClipRectStack.clear();

_TextureIdStack.clear();

_CallbacksDataBuf.clear();

_Path.clear();

_Splitter.ClearFreeMemory();

}

ImDrawList* ImDrawList::CloneOutput() const

{

ImDrawList* dst = IM_NEW(ImDrawList(_Data));

dst->CmdBuffer = CmdBuffer;

dst->IdxBuffer = IdxBuffer;

dst->VtxBuffer = VtxBuffer;

dst->Flags = Flags;

return dst;

}

void ImDrawList::AddDrawCmd()

{

ImDrawCmd draw_cmd;

draw_cmd.ClipRect = _CmdHeader.ClipRect; // Same as calling ImDrawCmd_HeaderCopy()

draw_cmd.TextureId = _CmdHeader.TextureId;

draw_cmd.VtxOffset = _CmdHeader.VtxOffset;

draw_cmd.IdxOffset = IdxBuffer.Size;

IM_ASSERT(draw_cmd.ClipRect.x <= draw_cmd.ClipRect.z && draw_cmd.ClipRect.y <= draw_cmd.ClipRect.w);

CmdBuffer.push_back(draw_cmd);

}

// Pop trailing draw command (used before merging or presenting to user)

// Note that this leaves the ImDrawList in a state unfit for further commands, as most code assume that CmdBuffer.Size > 0 && CmdBuffer.back().UserCallback == NULL

void ImDrawList::_PopUnusedDrawCmd()

{

while (CmdBuffer.Size > 0)

{

ImDrawCmd* curr_cmd = &CmdBuffer.Data[CmdBuffer.Size - 1];

if (curr_cmd->ElemCount != 0 || curr_cmd->UserCallback != NULL)

return;// break;

CmdBuffer.pop_back();

}

void ImDrawList::AddCallback(ImDrawCallback callback, void* userdata, size_t userdata_size)

{

IM_ASSERT_PARANOID(CmdBuffer.Size > 0);

ImDrawCmd* curr_cmd = &CmdBuffer.Data[CmdBuffer.Size - 1];

IM_ASSERT(curr_cmd->UserCallback == NULL);

if (curr_cmd->ElemCount != 0)

{

AddDrawCmd();

curr_cmd = &CmdBuffer.Data[CmdBuffer.Size - 1];

}

curr_cmd->UserCallback = callback;

if (userdata_size == 0)

{

// Store user data directly in command (no indirection)

curr_cmd->UserCallbackData = userdata;

curr_cmd->UserCallbackDataSize = 0;

curr_cmd->UserCallbackDataOffset = -1;

}

else

{

// Copy and store user data in a buffer

IM_ASSERT(userdata != NULL);

IM_ASSERT(userdata_size < (1u << 31));

curr_cmd->UserCallbackData = NULL; // Will be resolved during Render()

curr_cmd->UserCallbackDataSize = (int)userdata_size;

curr_cmd->UserCallbackDataOffset = _CallbacksDataBuf.Size;

_CallbacksDataBuf.resize(_CallbacksDataBuf.Size + (int)userdata_size);

memcpy(_CallbacksDataBuf.Data + (size_t)curr_cmd->UserCallbackDataOffset, userdata, userdata_size);

}

AddDrawCmd(); // Force a new command after us (see comment below)

}

// Compare ClipRect, TextureId and VtxOffset with a single memcmp()

#define ImDrawCmd_HeaderSize (offsetof(ImDrawCmd, VtxOffset) + sizeof(unsigned int))

#define ImDrawCmd_HeaderCompare(CMD_LHS, CMD_RHS) (memcmp(CMD_LHS, CMD_RHS, ImDrawCmd_HeaderSize)) // Compare ClipRect, TextureId, VtxOffset

#define ImDrawCmd_HeaderCopy(CMD_DST, CMD_SRC) (memcpy(CMD_DST, CMD_SRC, ImDrawCmd_HeaderSize)) // Copy ClipRect, TextureId, VtxOffset

#define ImDrawCmd_AreSequentialIdxOffset(CMD_0, CMD_1) (CMD_0->IdxOffset + CMD_0->ElemCount == CMD_1->IdxOffset)

// Try to merge two last draw commands

void ImDrawList::_TryMergeDrawCmds()

{

IM_ASSERT_PARANOID(CmdBuffer.Size > 0);

ImDrawCmd* curr_cmd = &CmdBuffer.Data[CmdBuffer.Size - 1];

ImDrawCmd* prev_cmd = curr_cmd - 1;

if (ImDrawCmd_HeaderCompare(curr_cmd, prev_cmd) == 0 && ImDrawCmd_AreSequentialIdxOffset(prev_cmd, curr_cmd) && curr_cmd->UserCallback == NULL && prev_cmd->UserCallback == NULL)

{

prev_cmd->ElemCount += curr_cmd->ElemCount;

CmdBuffer.pop_back();

}

// Our scheme may appears a bit unusual, basically we want the most-common calls AddLine AddRect etc. to not have to perform any check so we always have a command ready in the stack.

// The cost of figuring out if a new command has to be added or if we can merge is paid in those Update** functions only.

void ImDrawList::_OnChangedClipRect()

{

// If current command is used with different settings we need to add a new command

IM_ASSERT_PARANOID(CmdBuffer.Size > 0);

ImDrawCmd* curr_cmd = &CmdBuffer.Data[CmdBuffer.Size - 1];

if (curr_cmd->ElemCount != 0 && memcmp(&curr_cmd->ClipRect, &_CmdHeader.ClipRect, sizeof(ImVec4)) != 0)

{

AddDrawCmd();

return;

}

IM_ASSERT(curr_cmd->UserCallback == NULL);

// Try to merge with previous command if it matches, else use current command

ImDrawCmd* prev_cmd = curr_cmd - 1;

if (curr_cmd->ElemCount == 0 && CmdBuffer.Size > 1 && ImDrawCmd_HeaderCompare(&_CmdHeader, prev_cmd) == 0 && ImDrawCmd_AreSequentialIdxOffset(prev_cmd, curr_cmd) && prev_cmd->UserCallback == NULL)

{

CmdBuffer.pop_back();

return;

}

curr_cmd->ClipRect = _CmdHeader.ClipRect;

}

void ImDrawList::_OnChangedTextureID()

{

// If current command is used with different settings we need to add a new command

IM_ASSERT_PARANOID(CmdBuffer.Size > 0);

ImDrawCmd* curr_cmd = &CmdBuffer.Data[CmdBuffer.Size - 1];

if (curr_cmd->ElemCount != 0 && curr_cmd->TextureId != _CmdHeader.TextureId)

{

AddDrawCmd();

return;

}

IM_ASSERT(curr_cmd->UserCallback == NULL);

// Try to merge with previous command if it matches, else use current command

ImDrawCmd* prev_cmd = curr_cmd - 1;

if (curr_cmd->ElemCount == 0 && CmdBuffer.Size > 1 && ImDrawCmd_HeaderCompare(&_CmdHeader, prev_cmd) == 0 && ImDrawCmd_AreSequentialIdxOffset(prev_cmd, curr_cmd) && prev_cmd->UserCallback == NULL)

{

CmdBuffer.pop_back();

return;

}

curr_cmd->TextureId = _CmdHeader.TextureId;

}

void ImDrawList::_OnChangedVtxOffset()

{

// We don't need to compare curr_cmd->VtxOffset != _CmdHeader.VtxOffset because we know it'll be different at the time we call this.

_VtxCurrentIdx = 0;

IM_ASSERT_PARANOID(CmdBuffer.Size > 0);

ImDrawCmd* curr_cmd = &CmdBuffer.Data[CmdBuffer.Size - 1];

//IM_ASSERT(curr_cmd->VtxOffset != _CmdHeader.VtxOffset); // See #3349

if (curr_cmd->ElemCount != 0)

{

AddDrawCmd();

return;

}

IM_ASSERT(curr_cmd->UserCallback == NULL);

curr_cmd->VtxOffset = _CmdHeader.VtxOffset;

}

int ImDrawList::_CalcCircleAutoSegmentCount(float radius) const

{

// Automatic segment count

const int radius_idx = (int)(radius + 0.999999f); // ceil to never reduce accuracy

if (radius_idx >= 0 && radius_idx < IM_ARRAYSIZE(_Data->CircleSegmentCounts))

return _Data->CircleSegmentCounts[radius_idx]; // Use cached value

else

return IM_DRAWLIST_CIRCLE_AUTO_SEGMENT_CALC(radius, _Data->CircleSegmentMaxError);

}

// Render-level scissoring. This is passed down to your render function but not used for CPU-side coarse clipping. Prefer using higher-level ImGui::PushClipRect() to affect logic (hit-testing and widget culling)

void ImDrawList::PushClipRect(const ImVec2& cr_min, const ImVec2& cr_max, bool intersect_with_current_clip_rect)

{

ImVec4 cr(cr_min.x, cr_min.y, cr_max.x, cr_max.y);

if (intersect_with_current_clip_rect)

{

ImVec4 current = _CmdHeader.ClipRect;

if (cr.x < current.x) cr.x = current.x;

if (cr.y < current.y) cr.y = current.y;

if (cr.z > current.z) cr.z = current.z;

if (cr.w > current.w) cr.w = current.w;

}

cr.z = ImMax(cr.x, cr.z);

cr.w = ImMax(cr.y, cr.w);

_ClipRectStack.push_back(cr);

_CmdHeader.ClipRect = cr;

_OnChangedClipRect();

}

void ImDrawList::PushClipRectFullScreen()

{

PushClipRect(ImVec2(_Data->ClipRectFullscreen.x, _Data->ClipRectFullscreen.y), ImVec2(_Data->ClipRectFullscreen.z, _Data->ClipRectFullscreen.w));

}

void ImDrawList::PopClipRect()

{

_ClipRectStack.pop_back();

_CmdHeader.ClipRect = (_ClipRectStack.Size == 0) ? _Data->ClipRectFullscreen : _ClipRectStack.Data[_ClipRectStack.Size - 1];

_OnChangedClipRect();

}

void ImDrawList::PushTextureID(ImTextureID texture_id)

{

_TextureIdStack.push_back(texture_id);

_CmdHeader.TextureId = texture_id;

_OnChangedTextureID();

}

void ImDrawList::PopTextureID()

{

_TextureIdStack.pop_back();

_CmdHeader.TextureId = (_TextureIdStack.Size == 0) ? (ImTextureID)NULL : _TextureIdStack.Data[_TextureIdStack.Size - 1];

_OnChangedTextureID();

}

// This is used by ImGui::PushFont()/PopFont(). It works because we never use _TextureIdStack[] elsewhere than in PushTextureID()/PopTextureID().

void ImDrawList::_SetTextureID(ImTextureID texture_id)

{

if (_CmdHeader.TextureId == texture_id)

return;

_CmdHeader.TextureId = texture_id;

_OnChangedTextureID();

}

// Reserve space for a number of vertices and indices.

// You must finish filling your reserved data before calling PrimReserve() again, as it may reallocate or

// submit the intermediate results. PrimUnreserve() can be used to release unused allocations.

void ImDrawList::PrimReserve(int idx_count, int vtx_count)

{

// Large mesh support (when enabled)

IM_ASSERT_PARANOID(idx_count >= 0 && vtx_count >= 0);

if (sizeof(ImDrawIdx) == 2 && (_VtxCurrentIdx + vtx_count >= (1 << 16)) && (Flags & ImDrawListFlags_AllowVtxOffset))

{

// FIXME: In theory we should be testing that vtx_count <64k here.

// In practice, RenderText() relies on reserving ahead for a worst case scenario so it is currently useful for us

// to not make that check until we rework the text functions to handle clipping and large horizontal lines better.

_CmdHeader.VtxOffset = VtxBuffer.Size;

_OnChangedVtxOffset();

}

ImDrawCmd* draw_cmd = &CmdBuffer.Data[CmdBuffer.Size - 1];

draw_cmd->ElemCount += idx_count;

int vtx_buffer_old_size = VtxBuffer.Size;

VtxBuffer.resize(vtx_buffer_old_size + vtx_count);

_VtxWritePtr = VtxBuffer.Data + vtx_buffer_old_size;

int idx_buffer_old_size = IdxBuffer.Size;

IdxBuffer.resize(idx_buffer_old_size + idx_count);

_IdxWritePtr = IdxBuffer.Data + idx_buffer_old_size;

}

// Release the number of reserved vertices/indices from the end of the last reservation made with PrimReserve().

void ImDrawList::PrimUnreserve(int idx_count, int vtx_count)

{

IM_ASSERT_PARANOID(idx_count >= 0 && vtx_count >= 0);

ImDrawCmd* draw_cmd = &CmdBuffer.Data[CmdBuffer.Size - 1];

draw_cmd->ElemCount -= idx_count;

VtxBuffer.shrink(VtxBuffer.Size - vtx_count);

IdxBuffer.shrink(IdxBuffer.Size - idx_count);

}

// Fully unrolled with inline call to keep our debug builds decently fast.

void ImDrawList::PrimRect(const ImVec2& a, const ImVec2& c, ImU32 col)

{

ImVec2 b(c.x, a.y), d(a.x, c.y), uv(_Data->TexUvWhitePixel);

ImDrawIdx idx = (ImDrawIdx)_VtxCurrentIdx;

_IdxWritePtr[0] = idx; _IdxWritePtr[1] = (ImDrawIdx)(idx+1); _IdxWritePtr[2] = (ImDrawIdx)(idx+2);

_IdxWritePtr[3] = idx; _IdxWritePtr[4] = (ImDrawIdx)(idx+2); _IdxWritePtr[5] = (ImDrawIdx)(idx+3);

_VtxWritePtr[0].pos = a; _VtxWritePtr[0].uv = uv; _VtxWritePtr[0].col = col;

_VtxWritePtr[1].pos = b; _VtxWritePtr[1].uv = uv; _VtxWritePtr[1].col = col;

_VtxWritePtr[2].pos = c; _VtxWritePtr[2].uv = uv; _VtxWritePtr[2].col = col;

_VtxWritePtr[3].pos = d; _VtxWritePtr[3].uv = uv; _VtxWritePtr[3].col = col;

_VtxWritePtr += 4;

_VtxCurrentIdx += 4;

_IdxWritePtr += 6;

}

void ImDrawList::PrimRectUV(const ImVec2& a, const ImVec2& c, const ImVec2& uv_a, const ImVec2& uv_c, ImU32 col)

{

ImVec2 b(c.x, a.y), d(a.x, c.y), uv_b(uv_c.x, uv_a.y), uv_d(uv_a.x, uv_c.y);

ImDrawIdx idx = (ImDrawIdx)_VtxCurrentIdx;

_IdxWritePtr[0] = idx; _IdxWritePtr[1] = (ImDrawIdx)(idx+1); _IdxWritePtr[2] = (ImDrawIdx)(idx+2);

_IdxWritePtr[3] = idx; _IdxWritePtr[4] = (ImDrawIdx)(idx+2); _IdxWritePtr[5] = (ImDrawIdx)(idx+3);

_VtxWritePtr[0].pos = a; _VtxWritePtr[0].uv = uv_a; _VtxWritePtr[0].col = col;

_VtxWritePtr[1].pos = b; _VtxWritePtr[1].uv = uv_b; _VtxWritePtr[1].col = col;

_VtxWritePtr[2].pos = c; _VtxWritePtr[2].uv = uv_c; _VtxWritePtr[2].col = col;

_VtxWritePtr[3].pos = d; _VtxWritePtr[3].uv = uv_d; _VtxWritePtr[3].col = col;

_VtxWritePtr += 4;

_VtxCurrentIdx += 4;

_IdxWritePtr += 6;

}

void ImDrawList::PrimQuadUV(const ImVec2& a, const ImVec2& b, const ImVec2& c, const ImVec2& d, const ImVec2& uv_a, const ImVec2& uv_b, const ImVec2& uv_c, const ImVec2& uv_d, ImU32 col)

{

ImDrawIdx idx = (ImDrawIdx)_VtxCurrentIdx;

_IdxWritePtr[0] = idx; _IdxWritePtr[1] = (ImDrawIdx)(idx+1); _IdxWritePtr[2] = (ImDrawIdx)(idx+2);

_IdxWritePtr[3] = idx; _IdxWritePtr[4] = (ImDrawIdx)(idx+2); _IdxWritePtr[5] = (ImDrawIdx)(idx+3);

_VtxWritePtr[0].pos = a; _VtxWritePtr[0].uv = uv_a; _VtxWritePtr[0].col = col;

_VtxWritePtr[1].pos = b; _VtxWritePtr[1].uv = uv_b; _VtxWritePtr[1].col = col;

_VtxWritePtr[2].pos = c; _VtxWritePtr[2].uv = uv_c; _VtxWritePtr[2].col = col;

_VtxWritePtr[3].pos = d; _VtxWritePtr[3].uv = uv_d; _VtxWritePtr[3].col = col;

_VtxWritePtr += 4;

_VtxCurrentIdx += 4;

_IdxWritePtr += 6;

}

// On AddPolyline() and AddConvexPolyFilled() we intentionally avoid using ImVec2 and superfluous function calls to optimize debug/non-inlined builds.

// - Those macros expects l-values and need to be used as their own statement.

// - Those macros are intentionally not surrounded by the 'do {} while (0)' idiom because even that translates to runtime with debug compilers.

#define IM_NORMALIZE2F_OVER_ZERO(VX,VY) { float d2 = VX*VX + VY*VY; if (d2 > 0.0f) { float inv_len = ImRsqrt(d2); VX *= inv_len; VY *= inv_len; } } (void)0

#define IM_FIXNORMAL2F_MAX_INVLEN2 100.0f // 500.0f (see #4053, #3366)

#define IM_FIXNORMAL2F(VX,VY) { float d2 = VX*VX + VY*VY; if (d2 > 0.000001f) { float inv_len2 = 1.0f / d2; if (inv_len2 > IM_FIXNORMAL2F_MAX_INVLEN2) inv_len2 = IM_FIXNORMAL2F_MAX_INVLEN2; VX *= inv_len2; VY *= inv_len2; } } (void)0

// TODO: Thickness anti-aliased lines cap are missing their AA fringe.

// We avoid using the ImVec2 math operators here to reduce cost to a minimum for debug/non-inlined builds.

void ImDrawList::AddPolyline(const ImVec2* points, const int points_count, ImU32 col, ImDrawFlags flags, float thickness)

{

if (points_count < 2 || (col & IM_COL32_A_MASK) == 0)

return;

const bool closed = (flags & ImDrawFlags_Closed) != 0;

const ImVec2 opaque_uv = _Data->TexUvWhitePixel;

const int count = closed ? points_count : points_count - 1; // The number of line segments we need to draw

const bool thick_line = (thickness > _FringeScale);

if (Flags & ImDrawListFlags_AntiAliasedLines)

{

// Anti-aliased stroke

const float AA_SIZE = _FringeScale;

const ImU32 col_trans = col & ~IM_COL32_A_MASK;

// Thicknesses <1.0 should behave like thickness 1.0

thickness = ImMax(thickness, 1.0f);

const int integer_thickness = (int)thickness;

const float fractional_thickness = thickness - integer_thickness;

// Do we want to draw this line using a texture?

// - For now, only draw integer-width lines using textures to avoid issues with the way scaling occurs, could be improved.

// - If AA_SIZE is not 1.0f we cannot use the texture path.

const bool use_texture = (Flags & ImDrawListFlags_AntiAliasedLinesUseTex) && (integer_thickness < IM_DRAWLIST_TEX_LINES_WIDTH_MAX) && (fractional_thickness <= 0.00001f) && (AA_SIZE == 1.0f);

// We should never hit this, because NewFrame() doesn't set ImDrawListFlags_AntiAliasedLinesUseTex unless ImFontAtlasFlags_NoBakedLines is off

IM_ASSERT_PARANOID(!use_texture || !(_Data->Font->ContainerAtlas->Flags & ImFontAtlasFlags_NoBakedLines));

const int idx_count = use_texture ? (count * 6) : (thick_line ? count * 18 : count * 12);

const int vtx_count = use_texture ? (points_count * 2) : (thick_line ? points_count * 4 : points_count * 3);

PrimReserve(idx_count, vtx_count);

// Temporary buffer

// The first <points_count> items are normals at each line point, then after that there are either 2 or 4 temp points for each line point

_Data->TempBuffer.reserve_discard(points_count * ((use_texture || !thick_line) ? 3 : 5));

ImVec2* temp_normals = _Data->TempBuffer.Data;

ImVec2* temp_points = temp_normals + points_count;

// Calculate normals (tangents) for each line segment

for (int i1 = 0; i1 < count; i1++)

{

const int i2 = (i1 + 1) == points_count ? 0 : i1 + 1;

float dx = points[i2].x - points[i1].x;

float dy = points[i2].y - points[i1].y;

IM_NORMALIZE2F_OVER_ZERO(dx, dy);

temp_normals[i1].x = dy;

temp_normals[i1].y = -dx;

}

if (!closed)

temp_normals[points_count - 1] = temp_normals[points_count - 2];

// If we are drawing a one-pixel-wide line without a texture, or a textured line of any width, we only need 2 or 3 vertices per point

if (use_texture || !thick_line)

{

// [PATH 1] Texture-based lines (thick or non-thick)

// [PATH 2] Non texture-based lines (non-thick)

// The width of the geometry we need to draw - this is essentially <thickness> pixels for the line itself, plus "one pixel" for AA.

// - In the texture-based path, we don't use AA_SIZE here because the +1 is tied to the generated texture

// (see ImFontAtlasBuildRenderLinesTexData() function), and so alternate values won't work without changes to that code.

// - In the non texture-based paths, we would allow AA_SIZE to potentially be != 1.0f with a patch (e.g. fringe_scale patch to

// allow scaling geometry while preserving one-screen-pixel AA fringe).

const float half_draw_size = use_texture ? ((thickness * 0.5f) + 1) : AA_SIZE;

// If line is not closed, the first and last points need to be generated differently as there are no normals to blend

if (!closed)

{

temp_points[0] = points[0] + temp_normals[0] * half_draw_size;

temp_points[1] = points[0] - temp_normals[0] * half_draw_size;

temp_points[(points_count-1)*2+0] = points[points_count-1] + temp_normals[points_count-1] * half_draw_size;

temp_points[(points_count-1)*2+1] = points[points_count-1] - temp_normals[points_count-1] * half_draw_size;

}

// Generate the indices to form a number of triangles for each line segment, and the vertices for the line edges

// This takes points n and n+1 and writes into n+1, with the first point in a closed line being generated from the final one (as n+1 wraps)

// FIXME-OPT: Merge the different loops, possibly remove the temporary buffer.

unsigned int idx1 = _VtxCurrentIdx; // Vertex index for start of line segment

for (int i1 = 0; i1 < count; i1++) // i1 is the first point of the line segment

{

const int i2 = (i1 + 1) == points_count ? 0 : i1 + 1; // i2 is the second point of the line segment

const unsigned int idx2 = ((i1 + 1) == points_count) ? _VtxCurrentIdx : (idx1 + (use_texture ? 2 : 3)); // Vertex index for end of segment

// Average normals

float dm_x = (temp_normals[i1].x + temp_normals[i2].x) * 0.5f;

float dm_y = (temp_normals[i1].y + temp_normals[i2].y) * 0.5f;

IM_FIXNORMAL2F(dm_x, dm_y);

dm_x *= half_draw_size; // dm_x, dm_y are offset to the outer edge of the AA area

dm_y *= half_draw_size;

// Add temporary vertexes for the outer edges

ImVec2* out_vtx = &temp_points[i2 * 2];

out_vtx[0].x = points[i2].x + dm_x;

out_vtx[0].y = points[i2].y + dm_y;

out_vtx[1].x = points[i2].x - dm_x;

out_vtx[1].y = points[i2].y - dm_y;

if (use_texture)

{

// Add indices for two triangles

_IdxWritePtr[0] = (ImDrawIdx)(idx2 + 0); _IdxWritePtr[1] = (ImDrawIdx)(idx1 + 0); _IdxWritePtr[2] = (ImDrawIdx)(idx1 + 1); // Right tri

_IdxWritePtr[3] = (ImDrawIdx)(idx2 + 1); _IdxWritePtr[4] = (ImDrawIdx)(idx1 + 1); _IdxWritePtr[5] = (ImDrawIdx)(idx2 + 0); // Left tri

_IdxWritePtr += 6;

}

else

{

// Add indexes for four triangles

_IdxWritePtr[0] = (ImDrawIdx)(idx2 + 0); _IdxWritePtr[1] = (ImDrawIdx)(idx1 + 0); _IdxWritePtr[2] = (ImDrawIdx)(idx1 + 2); // Right tri 1

_IdxWritePtr[3] = (ImDrawIdx)(idx1 + 2); _IdxWritePtr[4] = (ImDrawIdx)(idx2 + 2); _IdxWritePtr[5] = (ImDrawIdx)(idx2 + 0); // Right tri 2

_IdxWritePtr[6] = (ImDrawIdx)(idx2 + 1); _IdxWritePtr[7] = (ImDrawIdx)(idx1 + 1); _IdxWritePtr[8] = (ImDrawIdx)(idx1 + 0); // Left tri 1

_IdxWritePtr[9] = (ImDrawIdx)(idx1 + 0); _IdxWritePtr[10] = (ImDrawIdx)(idx2 + 0); _IdxWritePtr[11] = (ImDrawIdx)(idx2 + 1); // Left tri 2

_IdxWritePtr += 12;

}

idx1 = idx2;

}

// Add vertexes for each point on the line

if (use_texture)

{

// If we're using textures we only need to emit the left/right edge vertices

ImVec4 tex_uvs = _Data->TexUvLines[integer_thickness];

/*if (fractional_thickness != 0.0f) // Currently always zero when use_texture==false!

{

const ImVec4 tex_uvs_1 = _Data->TexUvLines[integer_thickness + 1];

tex_uvs.x = tex_uvs.x + (tex_uvs_1.x - tex_uvs.x) * fractional_thickness; // inlined ImLerp()

tex_uvs.y = tex_uvs.y + (tex_uvs_1.y - tex_uvs.y) * fractional_thickness;

tex_uvs.z = tex_uvs.z + (tex_uvs_1.z - tex_uvs.z) * fractional_thickness;

tex_uvs.w = tex_uvs.w + (tex_uvs_1.w - tex_uvs.w) * fractional_thickness;

}*/

ImVec2 tex_uv0(tex_uvs.x, tex_uvs.y);

ImVec2 tex_uv1(tex_uvs.z, tex_uvs.w);

for (int i = 0; i < points_count; i++)

{

_VtxWritePtr[0].pos = temp_points[i * 2 + 0]; _VtxWritePtr[0].uv = tex_uv0; _VtxWritePtr[0].col = col; // Left-side outer edge

_VtxWritePtr[1].pos = temp_points[i * 2 + 1]; _VtxWritePtr[1].uv = tex_uv1; _VtxWritePtr[1].col = col; // Right-side outer edge

_VtxWritePtr += 2;

}

else

{

// If we're not using a texture, we need the center vertex as well

for (int i = 0; i < points_count; i++)

{

_VtxWritePtr[0].pos = points[i]; _VtxWritePtr[0].uv = opaque_uv; _VtxWritePtr[0].col = col; // Center of line

_VtxWritePtr[1].pos = temp_points[i * 2 + 0]; _VtxWritePtr[1].uv = opaque_uv; _VtxWritePtr[1].col = col_trans; // Left-side outer edge

_VtxWritePtr[2].pos = temp_points[i * 2 + 1]; _VtxWritePtr[2].uv = opaque_uv; _VtxWritePtr[2].col = col_trans; // Right-side outer edge

_VtxWritePtr += 3;

}

else

{

// [PATH 2] Non texture-based lines (thick): we need to draw the solid line core and thus require four vertices per point

const float half_inner_thickness = (thickness - AA_SIZE) * 0.5f;

// If line is not closed, the first and last points need to be generated differently as there are no normals to blend

if (!closed)

{

const int points_last = points_count - 1;

temp_points[0] = points[0] + temp_normals[0] * (half_inner_thickness + AA_SIZE);

temp_points[1] = points[0] + temp_normals[0] * (half_inner_thickness);

temp_points[2] = points[0] - temp_normals[0] * (half_inner_thickness);

temp_points[3] = points[0] - temp_normals[0] * (half_inner_thickness + AA_SIZE);

temp_points[points_last * 4 + 0] = points[points_last] + temp_normals[points_last] * (half_inner_thickness + AA_SIZE);

temp_points[points_last * 4 + 1] = points[points_last] + temp_normals[points_last] * (half_inner_thickness);

temp_points[points_last * 4 + 2] = points[points_last] - temp_normals[points_last] * (half_inner_thickness);

temp_points[points_last * 4 + 3] = points[points_last] - temp_normals[points_last] * (half_inner_thickness + AA_SIZE);

}

// Generate the indices to form a number of triangles for each line segment, and the vertices for the line edges

// This takes points n and n+1 and writes into n+1, with the first point in a closed line being generated from the final one (as n+1 wraps)

// FIXME-OPT: Merge the different loops, possibly remove the temporary buffer.

unsigned int idx1 = _VtxCurrentIdx; // Vertex index for start of line segment

for (int i1 = 0; i1 < count; i1++) // i1 is the first point of the line segment

{

const int i2 = (i1 + 1) == points_count ? 0 : (i1 + 1); // i2 is the second point of the line segment

const unsigned int idx2 = (i1 + 1) == points_count ? _VtxCurrentIdx : (idx1 + 4); // Vertex index for end of segment

// Average normals

float dm_x = (temp_normals[i1].x + temp_normals[i2].x) * 0.5f;

float dm_y = (temp_normals[i1].y + temp_normals[i2].y) * 0.5f;

IM_FIXNORMAL2F(dm_x, dm_y);

float dm_out_x = dm_x * (half_inner_thickness + AA_SIZE);

float dm_out_y = dm_y * (half_inner_thickness + AA_SIZE);

float dm_in_x = dm_x * half_inner_thickness;

float dm_in_y = dm_y * half_inner_thickness;

// Add temporary vertices

ImVec2* out_vtx = &temp_points[i2 * 4];

out_vtx[0].x = points[i2].x + dm_out_x;

out_vtx[0].y = points[i2].y + dm_out_y;

out_vtx[1].x = points[i2].x + dm_in_x;

out_vtx[1].y = points[i2].y + dm_in_y;

out_vtx[2].x = points[i2].x - dm_in_x;

out_vtx[2].y = points[i2].y - dm_in_y;

out_vtx[3].x = points[i2].x - dm_out_x;

out_vtx[3].y = points[i2].y - dm_out_y;

// Add indexes

_IdxWritePtr[0] = (ImDrawIdx)(idx2 + 1); _IdxWritePtr[1] = (ImDrawIdx)(idx1 + 1); _IdxWritePtr[2] = (ImDrawIdx)(idx1 + 2);

_IdxWritePtr[3] = (ImDrawIdx)(idx1 + 2); _IdxWritePtr[4] = (ImDrawIdx)(idx2 + 2); _IdxWritePtr[5] = (ImDrawIdx)(idx2 + 1);

_IdxWritePtr[6] = (ImDrawIdx)(idx2 + 1); _IdxWritePtr[7] = (ImDrawIdx)(idx1 + 1); _IdxWritePtr[8] = (ImDrawIdx)(idx1 + 0);

_IdxWritePtr[9] = (ImDrawIdx)(idx1 + 0); _IdxWritePtr[10] = (ImDrawIdx)(idx2 + 0); _IdxWritePtr[11] = (ImDrawIdx)(idx2 + 1);

_IdxWritePtr[12] = (ImDrawIdx)(idx2 + 2); _IdxWritePtr[13] = (ImDrawIdx)(idx1 + 2); _IdxWritePtr[14] = (ImDrawIdx)(idx1 + 3);

_IdxWritePtr[15] = (ImDrawIdx)(idx1 + 3); _IdxWritePtr[16] = (ImDrawIdx)(idx2 + 3); _IdxWritePtr[17] = (ImDrawIdx)(idx2 + 2);

_IdxWritePtr += 18;

idx1 = idx2;

}

// Add vertices

for (int i = 0; i < points_count; i++)

{

_VtxWritePtr[0].pos = temp_points[i * 4 + 0]; _VtxWritePtr[0].uv = opaque_uv; _VtxWritePtr[0].col = col_trans;

_VtxWritePtr[1].pos = temp_points[i * 4 + 1]; _VtxWritePtr[1].uv = opaque_uv; _VtxWritePtr[1].col = col;

_VtxWritePtr[2].pos = temp_points[i * 4 + 2]; _VtxWritePtr[2].uv = opaque_uv; _VtxWritePtr[2].col = col;

_VtxWritePtr[3].pos = temp_points[i * 4 + 3]; _VtxWritePtr[3].uv = opaque_uv; _VtxWritePtr[3].col = col_trans;

_VtxWritePtr += 4;

}

_VtxCurrentIdx += (ImDrawIdx)vtx_count;

}

else

{

// [PATH 4] Non texture-based, Non anti-aliased lines

const int idx_count = count * 6;

const int vtx_count = count * 4; // FIXME-OPT: Not sharing edges

PrimReserve(idx_count, vtx_count);

for (int i1 = 0; i1 < count; i1++)

{

const int i2 = (i1 + 1) == points_count ? 0 : i1 + 1;

const ImVec2& p1 = points[i1];

const ImVec2& p2 = points[i2];

float dx = p2.x - p1.x;

float dy = p2.y - p1.y;

IM_NORMALIZE2F_OVER_ZERO(dx, dy);

dx *= (thickness * 0.5f);

dy *= (thickness * 0.5f);

_VtxWritePtr[0].pos.x = p1.x + dy; _VtxWritePtr[0].pos.y = p1.y - dx; _VtxWritePtr[0].uv = opaque_uv; _VtxWritePtr[0].col = col;

_VtxWritePtr[1].pos.x = p2.x + dy; _VtxWritePtr[1].pos.y = p2.y - dx; _VtxWritePtr[1].uv = opaque_uv; _VtxWritePtr[1].col = col;

_VtxWritePtr[2].pos.x = p2.x - dy; _VtxWritePtr[2].pos.y = p2.y + dx; _VtxWritePtr[2].uv = opaque_uv; _VtxWritePtr[2].col = col;

_VtxWritePtr[3].pos.x = p1.x - dy; _VtxWritePtr[3].pos.y = p1.y + dx; _VtxWritePtr[3].uv = opaque_uv; _VtxWritePtr[3].col = col;

_VtxWritePtr += 4;

_IdxWritePtr[0] = (ImDrawIdx)(_VtxCurrentIdx); _IdxWritePtr[1] = (ImDrawIdx)(_VtxCurrentIdx + 1); _IdxWritePtr[2] = (ImDrawIdx)(_VtxCurrentIdx + 2);

_IdxWritePtr[3] = (ImDrawIdx)(_VtxCurrentIdx); _IdxWritePtr[4] = (ImDrawIdx)(_VtxCurrentIdx + 2); _IdxWritePtr[5] = (ImDrawIdx)(_VtxCurrentIdx + 3);

_IdxWritePtr += 6;

_VtxCurrentIdx += 4;

}

// - We intentionally avoid using ImVec2 and its math operators here to reduce cost to a minimum for debug/non-inlined builds.

// - Filled shapes must always use clockwise winding order. The anti-aliasing fringe depends on it. Counter-clockwise shapes will have "inward" anti-aliasing.

void ImDrawList::AddConvexPolyFilled(const ImVec2* points, const int points_count, ImU32 col)

{

if (points_count < 3 || (col & IM_COL32_A_MASK) == 0)

return;

const ImVec2 uv = _Data->TexUvWhitePixel;

if (Flags & ImDrawListFlags_AntiAliasedFill)

{

// Anti-aliased Fill

const float AA_SIZE = _FringeScale;

const ImU32 col_trans = col & ~IM_COL32_A_MASK;

const int idx_count = (points_count - 2)*3 + points_count * 6;

const int vtx_count = (points_count * 2);

PrimReserve(idx_count, vtx_count);

// Add indexes for fill

unsigned int vtx_inner_idx = _VtxCurrentIdx;

unsigned int vtx_outer_idx = _VtxCurrentIdx + 1;

for (int i = 2; i < points_count; i++)

{

_IdxWritePtr[0] = (ImDrawIdx)(vtx_inner_idx); _IdxWritePtr[1] = (ImDrawIdx)(vtx_inner_idx + ((i - 1) << 1)); _IdxWritePtr[2] = (ImDrawIdx)(vtx_inner_idx + (i << 1));

_IdxWritePtr += 3;

}

// Compute normals

_Data->TempBuffer.reserve_discard(points_count);

ImVec2* temp_normals = _Data->TempBuffer.Data;

for (int i0 = points_count - 1, i1 = 0; i1 < points_count; i0 = i1++)

{

const ImVec2& p0 = points[i0];

const ImVec2& p1 = points[i1];

float dx = p1.x - p0.x;

float dy = p1.y - p0.y;

IM_NORMALIZE2F_OVER_ZERO(dx, dy);

temp_normals[i0].x = dy;

temp_normals[i0].y = -dx;

}

for (int i0 = points_count - 1, i1 = 0; i1 < points_count; i0 = i1++)

{

// Average normals

const ImVec2& n0 = temp_normals[i0];

const ImVec2& n1 = temp_normals[i1];

float dm_x = (n0.x + n1.x) * 0.5f;

float dm_y = (n0.y + n1.y) * 0.5f;

IM_FIXNORMAL2F(dm_x, dm_y);

dm_x *= AA_SIZE * 0.5f;

dm_y *= AA_SIZE * 0.5f;

// Add vertices

_VtxWritePtr[0].pos.x = (points[i1].x - dm_x); _VtxWritePtr[0].pos.y = (points[i1].y - dm_y); _VtxWritePtr[0].uv = uv; _VtxWritePtr[0].col = col; // Inner

_VtxWritePtr[1].pos.x = (points[i1].x + dm_x); _VtxWritePtr[1].pos.y = (points[i1].y + dm_y); _VtxWritePtr[1].uv = uv; _VtxWritePtr[1].col = col_trans; // Outer

_VtxWritePtr += 2;

// Add indexes for fringes

_IdxWritePtr[0] = (ImDrawIdx)(vtx_inner_idx + (i1 << 1)); _IdxWritePtr[1] = (ImDrawIdx)(vtx_inner_idx + (i0 << 1)); _IdxWritePtr[2] = (ImDrawIdx)(vtx_outer_idx + (i0 << 1));

_IdxWritePtr[3] = (ImDrawIdx)(vtx_outer_idx + (i0 << 1)); _IdxWritePtr[4] = (ImDrawIdx)(vtx_outer_idx + (i1 << 1)); _IdxWritePtr[5] = (ImDrawIdx)(vtx_inner_idx + (i1 << 1));

_IdxWritePtr += 6;

}

_VtxCurrentIdx += (ImDrawIdx)vtx_count;

}

else

{

// Non Anti-aliased Fill

const int idx_count = (points_count - 2)*3;

const int vtx_count = points_count;

PrimReserve(idx_count, vtx_count);

for (int i = 0; i < vtx_count; i++)

{

_VtxWritePtr[0].pos = points[i]; _VtxWritePtr[0].uv = uv; _VtxWritePtr[0].col = col;

_VtxWritePtr++;

}

for (int i = 2; i < points_count; i++)

{

_IdxWritePtr[0] = (ImDrawIdx)(_VtxCurrentIdx); _IdxWritePtr[1] = (ImDrawIdx)(_VtxCurrentIdx + i - 1); _IdxWritePtr[2] = (ImDrawIdx)(_VtxCurrentIdx + i);

_IdxWritePtr += 3;

}

_VtxCurrentIdx += (ImDrawIdx)vtx_count;

}

void ImDrawList::_PathArcToFastEx(const ImVec2& center, float radius, int a_min_sample, int a_max_sample, int a_step)

{

if (radius < 0.5f)

{

_Path.push_back(center);

return;

}

// Calculate arc auto segment step size

if (a_step <= 0)

a_step = IM_DRAWLIST_ARCFAST_SAMPLE_MAX / _CalcCircleAutoSegmentCount(radius);

// Make sure we never do steps larger than one quarter of the circle

a_step = ImClamp(a_step, 1, IM_DRAWLIST_ARCFAST_TABLE_SIZE / 4);

const int sample_range = ImAbs(a_max_sample - a_min_sample);

const int a_next_step = a_step;

int samples = sample_range + 1;

bool extra_max_sample = false;

if (a_step > 1)

{

samples = sample_range / a_step + 1;

const int overstep = sample_range % a_step;

if (overstep > 0)

{

extra_max_sample = true;

samples++;

// When we have overstep to avoid awkwardly looking one long line and one tiny one at the end,

// distribute first step range evenly between them by reducing first step size.

if (sample_range > 0)

a_step -= (a_step - overstep) / 2;

}

_Path.resize(_Path.Size + samples);

ImVec2* out_ptr = _Path.Data + (_Path.Size - samples);

int sample_index = a_min_sample;

if (sample_index < 0 || sample_index >= IM_DRAWLIST_ARCFAST_SAMPLE_MAX)

{

sample_index = sample_index % IM_DRAWLIST_ARCFAST_SAMPLE_MAX;

if (sample_index < 0)

sample_index += IM_DRAWLIST_ARCFAST_SAMPLE_MAX;

}

if (a_max_sample >= a_min_sample)

{

for (int a = a_min_sample; a <= a_max_sample; a += a_step, sample_index += a_step, a_step = a_next_step)

{

// a_step is clamped to IM_DRAWLIST_ARCFAST_SAMPLE_MAX, so we have guaranteed that it will not wrap over range twice or more

if (sample_index >= IM_DRAWLIST_ARCFAST_SAMPLE_MAX)

sample_index -= IM_DRAWLIST_ARCFAST_SAMPLE_MAX;

const ImVec2 s = _Data->ArcFastVtx[sample_index];

out_ptr->x = center.x + s.x * radius;

out_ptr->y = center.y + s.y * radius;

out_ptr++;

}

else

{

for (int a = a_min_sample; a >= a_max_sample; a -= a_step, sample_index -= a_step, a_step = a_next_step)

{

// a_step is clamped to IM_DRAWLIST_ARCFAST_SAMPLE_MAX, so we have guaranteed that it will not wrap over range twice or more

if (sample_index < 0)

sample_index += IM_DRAWLIST_ARCFAST_SAMPLE_MAX;

const ImVec2 s = _Data->ArcFastVtx[sample_index];

out_ptr->x = center.x + s.x * radius;

out_ptr->y = center.y + s.y * radius;

out_ptr++;

}

if (extra_max_sample)

{

int normalized_max_sample = a_max_sample % IM_DRAWLIST_ARCFAST_SAMPLE_MAX;

if (normalized_max_sample < 0)

normalized_max_sample += IM_DRAWLIST_ARCFAST_SAMPLE_MAX;

const ImVec2 s = _Data->ArcFastVtx[normalized_max_sample];

out_ptr->x = center.x + s.x * radius;

out_ptr->y = center.y + s.y * radius;

out_ptr++;

}

IM_ASSERT_PARANOID(_Path.Data + _Path.Size == out_ptr);

}

void ImDrawList::_PathArcToN(const ImVec2& center, float radius, float a_min, float a_max, int num_segments)

{

if (radius < 0.5f)

{

_Path.push_back(center);

return;

}

// Note that we are adding a point at both a_min and a_max.

// If you are trying to draw a full closed circle you don't want the overlapping points!

_Path.reserve(_Path.Size + (num_segments + 1));

for (int i = 0; i <= num_segments; i++)

{

const float a = a_min + ((float)i / (float)num_segments) * (a_max - a_min);

_Path.push_back(ImVec2(center.x + ImCos(a) * radius, center.y + ImSin(a) * radius));

}

// 0: East, 3: South, 6: West, 9: North, 12: East

void ImDrawList::PathArcToFast(const ImVec2& center, float radius, int a_min_of_12, int a_max_of_12)

{

if (radius < 0.5f)

{

_Path.push_back(center);

return;

}

_PathArcToFastEx(center, radius, a_min_of_12 * IM_DRAWLIST_ARCFAST_SAMPLE_MAX / 12, a_max_of_12 * IM_DRAWLIST_ARCFAST_SAMPLE_MAX / 12, 0);

}

void ImDrawList::PathArcTo(const ImVec2& center, float radius, float a_min, float a_max, int num_segments)

{

if (radius < 0.5f)

{

_Path.push_back(center);

return;

}

if (num_segments > 0)

{

_PathArcToN(center, radius, a_min, a_max, num_segments);

return;

}

// Automatic segment count

if (radius <= _Data->ArcFastRadiusCutoff)

{

const bool a_is_reverse = a_max < a_min;

// We are going to use precomputed values for mid samples.

// Determine first and last sample in lookup table that belong to the arc.

const float a_min_sample_f = IM_DRAWLIST_ARCFAST_SAMPLE_MAX * a_min / (IM_PI * 2.0f);

const float a_max_sample_f = IM_DRAWLIST_ARCFAST_SAMPLE_MAX * a_max / (IM_PI * 2.0f);

const int a_min_sample = a_is_reverse ? (int)ImFloor(a_min_sample_f) : (int)ImCeil(a_min_sample_f);

const int a_max_sample = a_is_reverse ? (int)ImCeil(a_max_sample_f) : (int)ImFloor(a_max_sample_f);

const int a_mid_samples = a_is_reverse ? ImMax(a_min_sample - a_max_sample, 0) : ImMax(a_max_sample - a_min_sample, 0);

const float a_min_segment_angle = a_min_sample * IM_PI * 2.0f / IM_DRAWLIST_ARCFAST_SAMPLE_MAX;

const float a_max_segment_angle = a_max_sample * IM_PI * 2.0f / IM_DRAWLIST_ARCFAST_SAMPLE_MAX;

const bool a_emit_start = ImAbs(a_min_segment_angle - a_min) >= 1e-5f;

const bool a_emit_end = ImAbs(a_max - a_max_segment_angle) >= 1e-5f;

_Path.reserve(_Path.Size + (a_mid_samples + 1 + (a_emit_start ? 1 : 0) + (a_emit_end ? 1 : 0)));

if (a_emit_start)

_Path.push_back(ImVec2(center.x + ImCos(a_min) * radius, center.y + ImSin(a_min) * radius));

if (a_mid_samples > 0)

_PathArcToFastEx(center, radius, a_min_sample, a_max_sample, 0);

if (a_emit_end)

_Path.push_back(ImVec2(center.x + ImCos(a_max) * radius, center.y + ImSin(a_max) * radius));

}

else

{

const float arc_length = ImAbs(a_max - a_min);

const int circle_segment_count = _CalcCircleAutoSegmentCount(radius);

const int arc_segment_count = ImMax((int)ImCeil(circle_segment_count * arc_length / (IM_PI * 2.0f)), (int)(2.0f * IM_PI / arc_length));

_PathArcToN(center, radius, a_min, a_max, arc_segment_count);

}

void ImDrawList::PathEllipticalArcTo(const ImVec2& center, const ImVec2& radius, float rot, float a_min, float a_max, int num_segments)

{

if (num_segments <= 0)

num_segments = _CalcCircleAutoSegmentCount(ImMax(radius.x, radius.y)); // A bit pessimistic, maybe there's a better computation to do here.

_Path.reserve(_Path.Size + (num_segments + 1));

const float cos_rot = ImCos(rot);

const float sin_rot = ImSin(rot);

for (int i = 0; i <= num_segments; i++)

{

const float a = a_min + ((float)i / (float)num_segments) * (a_max - a_min);

ImVec2 point(ImCos(a) * radius.x, ImSin(a) * radius.y);

const ImVec2 rel((point.x * cos_rot) - (point.y * sin_rot), (point.x * sin_rot) + (point.y * cos_rot));

point.x = rel.x + center.x;

point.y = rel.y + center.y;

_Path.push_back(point);

}

ImVec2 ImBezierCubicCalc(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, float t)

{

float u = 1.0f - t;

float w1 = u * u * u;

float w2 = 3 * u * u * t;

float w3 = 3 * u * t * t;

float w4 = t * t * t;

return ImVec2(w1 * p1.x + w2 * p2.x + w3 * p3.x + w4 * p4.x, w1 * p1.y + w2 * p2.y + w3 * p3.y + w4 * p4.y);

}

ImVec2 ImBezierQuadraticCalc(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, float t)

{

float u = 1.0f - t;

float w1 = u * u;

float w2 = 2 * u * t;

float w3 = t * t;

return ImVec2(w1 * p1.x + w2 * p2.x + w3 * p3.x, w1 * p1.y + w2 * p2.y + w3 * p3.y);

}

// Closely mimics ImBezierCubicClosestPointCasteljau() in imgui.cpp

static void PathBezierCubicCurveToCasteljau(ImVector<ImVec2>* path, float x1, float y1, float x2, float y2, float x3, float y3, float x4, float y4, float tess_tol, int level)

{

float dx = x4 - x1;

float dy = y4 - y1;

float d2 = (x2 - x4) * dy - (y2 - y4) * dx;

float d3 = (x3 - x4) * dy - (y3 - y4) * dx;

d2 = (d2 >= 0) ? d2 : -d2;

d3 = (d3 >= 0) ? d3 : -d3;

if ((d2 + d3) * (d2 + d3) < tess_tol * (dx * dx + dy * dy))

{

path->push_back(ImVec2(x4, y4));

}

else if (level < 10)

{

float x12 = (x1 + x2) * 0.5f, y12 = (y1 + y2) * 0.5f;

float x23 = (x2 + x3) * 0.5f, y23 = (y2 + y3) * 0.5f;

float x34 = (x3 + x4) * 0.5f, y34 = (y3 + y4) * 0.5f;

float x123 = (x12 + x23) * 0.5f, y123 = (y12 + y23) * 0.5f;

float x234 = (x23 + x34) * 0.5f, y234 = (y23 + y34) * 0.5f;

float x1234 = (x123 + x234) * 0.5f, y1234 = (y123 + y234) * 0.5f;

PathBezierCubicCurveToCasteljau(path, x1, y1, x12, y12, x123, y123, x1234, y1234, tess_tol, level + 1);

PathBezierCubicCurveToCasteljau(path, x1234, y1234, x234, y234, x34, y34, x4, y4, tess_tol, level + 1);

}

static void PathBezierQuadraticCurveToCasteljau(ImVector<ImVec2>* path, float x1, float y1, float x2, float y2, float x3, float y3, float tess_tol, int level)

{

float dx = x3 - x1, dy = y3 - y1;

float det = (x2 - x3) * dy - (y2 - y3) * dx;

if (det * det * 4.0f < tess_tol * (dx * dx + dy * dy))

{

path->push_back(ImVec2(x3, y3));

}

else if (level < 10)

{

float x12 = (x1 + x2) * 0.5f, y12 = (y1 + y2) * 0.5f;

float x23 = (x2 + x3) * 0.5f, y23 = (y2 + y3) * 0.5f;

float x123 = (x12 + x23) * 0.5f, y123 = (y12 + y23) * 0.5f;

PathBezierQuadraticCurveToCasteljau(path, x1, y1, x12, y12, x123, y123, tess_tol, level + 1);

PathBezierQuadraticCurveToCasteljau(path, x123, y123, x23, y23, x3, y3, tess_tol, level + 1);

}

void ImDrawList::PathBezierCubicCurveTo(const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, int num_segments)

{

ImVec2 p1 = _Path.back();

if (num_segments == 0)

{

IM_ASSERT(_Data->CurveTessellationTol > 0.0f);

PathBezierCubicCurveToCasteljau(&_Path, p1.x, p1.y, p2.x, p2.y, p3.x, p3.y, p4.x, p4.y, _Data->CurveTessellationTol, 0); // Auto-tessellated

}

else

{

float t_step = 1.0f / (float)num_segments;

for (int i_step = 1; i_step <= num_segments; i_step++)

_Path.push_back(ImBezierCubicCalc(p1, p2, p3, p4, t_step * i_step));

}

void ImDrawList::PathBezierQuadraticCurveTo(const ImVec2& p2, const ImVec2& p3, int num_segments)

{

ImVec2 p1 = _Path.back();

if (num_segments == 0)

{

IM_ASSERT(_Data->CurveTessellationTol > 0.0f);

PathBezierQuadraticCurveToCasteljau(&_Path, p1.x, p1.y, p2.x, p2.y, p3.x, p3.y, _Data->CurveTessellationTol, 0);// Auto-tessellated

}

else

{

float t_step = 1.0f / (float)num_segments;

for (int i_step = 1; i_step <= num_segments; i_step++)

_Path.push_back(ImBezierQuadraticCalc(p1, p2, p3, t_step * i_step));

}

static inline ImDrawFlags FixRectCornerFlags(ImDrawFlags flags)

{

/*

IM_STATIC_ASSERT(ImDrawFlags_RoundCornersTopLeft == (1 << 4));

#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS

// Obsoleted in 1.82 (from February 2021). This code was stripped/simplified and mostly commented in 1.90 (from September 2023)

// - Legacy Support for hard coded ~0 (used to be a suggested equivalent to ImDrawCornerFlags_All)

if (flags == ~0) { return ImDrawFlags_RoundCornersAll; }

// - Legacy Support for hard coded 0x01 to 0x0F (matching 15 out of 16 old flags combinations). Read details in older version of this code.

if (flags >= 0x01 && flags <= 0x0F) { return (flags << 4); }

// We cannot support hard coded 0x00 with 'float rounding > 0.0f' --> replace with ImDrawFlags_RoundCornersNone or use 'float rounding = 0.0f'

#endif

*/

// If this assert triggers, please update your code replacing hardcoded values with new ImDrawFlags_RoundCorners* values.

// Note that ImDrawFlags_Closed (== 0x01) is an invalid flag for AddRect(), AddRectFilled(), PathRect() etc. anyway.

// See details in 1.82 Changelog as well as 2021/03/12 and 2023/09/08 entries in "API BREAKING CHANGES" section.

IM_ASSERT((flags & 0x0F) == 0 && "Misuse of legacy hardcoded ImDrawCornerFlags values!");

if ((flags & ImDrawFlags_RoundCornersMask_) == 0)

flags |= ImDrawFlags_RoundCornersAll;

return flags;

}

void ImDrawList::PathRect(const ImVec2& a, const ImVec2& b, float rounding, ImDrawFlags flags)

{

if (rounding >= 0.5f)

{

flags = FixRectCornerFlags(flags);

rounding = ImMin(rounding, ImFabs(b.x - a.x) * (((flags & ImDrawFlags_RoundCornersTop) == ImDrawFlags_RoundCornersTop) || ((flags & ImDrawFlags_RoundCornersBottom) == ImDrawFlags_RoundCornersBottom) ? 0.5f : 1.0f) - 1.0f);

rounding = ImMin(rounding, ImFabs(b.y - a.y) * (((flags & ImDrawFlags_RoundCornersLeft) == ImDrawFlags_RoundCornersLeft) || ((flags & ImDrawFlags_RoundCornersRight) == ImDrawFlags_RoundCornersRight) ? 0.5f : 1.0f) - 1.0f);

}

if (rounding < 0.5f || (flags & ImDrawFlags_RoundCornersMask_) == ImDrawFlags_RoundCornersNone)

{

PathLineTo(a);

PathLineTo(ImVec2(b.x, a.y));

PathLineTo(b);

PathLineTo(ImVec2(a.x, b.y));

}

else

{

const float rounding_tl = (flags & ImDrawFlags_RoundCornersTopLeft) ? rounding : 0.0f;

const float rounding_tr = (flags & ImDrawFlags_RoundCornersTopRight) ? rounding : 0.0f;

const float rounding_br = (flags & ImDrawFlags_RoundCornersBottomRight) ? rounding : 0.0f;

const float rounding_bl = (flags & ImDrawFlags_RoundCornersBottomLeft) ? rounding : 0.0f;

PathArcToFast(ImVec2(a.x + rounding_tl, a.y + rounding_tl), rounding_tl, 6, 9);

PathArcToFast(ImVec2(b.x - rounding_tr, a.y + rounding_tr), rounding_tr, 9, 12);

PathArcToFast(ImVec2(b.x - rounding_br, b.y - rounding_br), rounding_br, 0, 3);

PathArcToFast(ImVec2(a.x + rounding_bl, b.y - rounding_bl), rounding_bl, 3, 6);

}

void ImDrawList::AddLine(const ImVec2& p1, const ImVec2& p2, ImU32 col, float thickness)

{

if ((col & IM_COL32_A_MASK) == 0)

return;

PathLineTo(p1 + ImVec2(0.5f, 0.5f));

PathLineTo(p2 + ImVec2(0.5f, 0.5f));

PathStroke(col, 0, thickness);

}

// p_min = upper-left, p_max = lower-right

// Note we don't render 1 pixels sized rectangles properly.

void ImDrawList::AddRect(const ImVec2& p_min, const ImVec2& p_max, ImU32 col, float rounding, ImDrawFlags flags, float thickness)

{

if ((col & IM_COL32_A_MASK) == 0)

return;

if (Flags & ImDrawListFlags_AntiAliasedLines)

PathRect(p_min + ImVec2(0.50f, 0.50f), p_max - ImVec2(0.50f, 0.50f), rounding, flags);

else

PathRect(p_min + ImVec2(0.50f, 0.50f), p_max - ImVec2(0.49f, 0.49f), rounding, flags); // Better looking lower-right corner and rounded non-AA shapes.

PathStroke(col, ImDrawFlags_Closed, thickness);

}

void ImDrawList::AddRectFilled(const ImVec2& p_min, const ImVec2& p_max, ImU32 col, float rounding, ImDrawFlags flags)

{

if ((col & IM_COL32_A_MASK) == 0)

return;

if (rounding < 0.5f || (flags & ImDrawFlags_RoundCornersMask_) == ImDrawFlags_RoundCornersNone)

{

PrimReserve(6, 4);

PrimRect(p_min, p_max, col);

}

else

{

PathRect(p_min, p_max, rounding, flags);

PathFillConvex(col);

}

// p_min = upper-left, p_max = lower-right

void ImDrawList::AddRectFilledMultiColor(const ImVec2& p_min, const ImVec2& p_max, ImU32 col_upr_left, ImU32 col_upr_right, ImU32 col_bot_right, ImU32 col_bot_left)

{

if (((col_upr_left | col_upr_right | col_bot_right | col_bot_left) & IM_COL32_A_MASK) == 0)

return;

const ImVec2 uv = _Data->TexUvWhitePixel;

PrimReserve(6, 4);

PrimWriteIdx((ImDrawIdx)(_VtxCurrentIdx)); PrimWriteIdx((ImDrawIdx)(_VtxCurrentIdx + 1)); PrimWriteIdx((ImDrawIdx)(_VtxCurrentIdx + 2));

PrimWriteIdx((ImDrawIdx)(_VtxCurrentIdx)); PrimWriteIdx((ImDrawIdx)(_VtxCurrentIdx + 2)); PrimWriteIdx((ImDrawIdx)(_VtxCurrentIdx + 3));

PrimWriteVtx(p_min, uv, col_upr_left);

PrimWriteVtx(ImVec2(p_max.x, p_min.y), uv, col_upr_right);

PrimWriteVtx(p_max, uv, col_bot_right);

PrimWriteVtx(ImVec2(p_min.x, p_max.y), uv, col_bot_left);

}

void ImDrawList::AddQuad(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, ImU32 col, float thickness)

{

if ((col & IM_COL32_A_MASK) == 0)

return;

PathLineTo(p1);

PathLineTo(p2);

PathLineTo(p3);

PathLineTo(p4);

PathStroke(col, ImDrawFlags_Closed, thickness);

}

void ImDrawList::AddQuadFilled(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, ImU32 col)

{

if ((col & IM_COL32_A_MASK) == 0)

return;

PathLineTo(p1);

PathLineTo(p2);

PathLineTo(p3);

PathLineTo(p4);

PathFillConvex(col);

}

void ImDrawList::AddTriangle(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, ImU32 col, float thickness)

{

if ((col & IM_COL32_A_MASK) == 0)

return;

PathLineTo(p1);

PathLineTo(p2);

PathLineTo(p3);

PathStroke(col, ImDrawFlags_Closed, thickness);

}

void ImDrawList::AddTriangleFilled(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, ImU32 col)

{

if ((col & IM_COL32_A_MASK) == 0)

return;

PathLineTo(p1);

PathLineTo(p2);

PathLineTo(p3);

PathFillConvex(col);

}

void ImDrawList::AddCircle(const ImVec2& center, float radius, ImU32 col, int num_segments, float thickness)

{

if ((col & IM_COL32_A_MASK) == 0 || radius < 0.5f)

return;

if (num_segments <= 0)

{

// Use arc with automatic segment count

_PathArcToFastEx(center, radius - 0.5f, 0, IM_DRAWLIST_ARCFAST_SAMPLE_MAX, 0);

_Path.Size--;

}

else

{

// Explicit segment count (still clamp to avoid drawing insanely tessellated shapes)

num_segments = ImClamp(num_segments, 3, IM_DRAWLIST_CIRCLE_AUTO_SEGMENT_MAX);

// Because we are filling a closed shape we remove 1 from the count of segments/points

const float a_max = (IM_PI * 2.0f) * ((float)num_segments - 1.0f) / (float)num_segments;

PathArcTo(center, radius - 0.5f, 0.0f, a_max, num_segments - 1);

}

PathStroke(col, ImDrawFlags_Closed, thickness);

}

void ImDrawList::AddCircleFilled(const ImVec2& center, float radius, ImU32 col, int num_segments)

{

if ((col & IM_COL32_A_MASK) == 0 || radius < 0.5f)

return;

if (num_segments <= 0)

{

// Use arc with automatic segment count

_PathArcToFastEx(center, radius, 0, IM_DRAWLIST_ARCFAST_SAMPLE_MAX, 0);

_Path.Size--;

}

else

{

// Explicit segment count (still clamp to avoid drawing insanely tessellated shapes)

num_segments = ImClamp(num_segments, 3, IM_DRAWLIST_CIRCLE_AUTO_SEGMENT_MAX);

// Because we are filling a closed shape we remove 1 from the count of segments/points

const float a_max = (IM_PI * 2.0f) * ((float)num_segments - 1.0f) / (float)num_segments;

PathArcTo(center, radius, 0.0f, a_max, num_segments - 1);

}

PathFillConvex(col);

}

// Guaranteed to honor 'num_segments'

void ImDrawList::AddNgon(const ImVec2& center, float radius, ImU32 col, int num_segments, float thickness)

{

if ((col & IM_COL32_A_MASK) == 0 || num_segments <= 2)

return;

// Because we are filling a closed shape we remove 1 from the count of segments/points

const float a_max = (IM_PI * 2.0f) * ((float)num_segments - 1.0f) / (float)num_segments;

PathArcTo(center, radius - 0.5f, 0.0f, a_max, num_segments - 1);

PathStroke(col, ImDrawFlags_Closed, thickness);

}

// Guaranteed to honor 'num_segments'

void ImDrawList::AddNgonFilled(const ImVec2& center, float radius, ImU32 col, int num_segments)

{

if ((col & IM_COL32_A_MASK) == 0 || num_segments <= 2)

return;

// Because we are filling a closed shape we remove 1 from the count of segments/points

const float a_max = (IM_PI * 2.0f) * ((float)num_segments - 1.0f) / (float)num_segments;

PathArcTo(center, radius, 0.0f, a_max, num_segments - 1);

PathFillConvex(col);

}

// Ellipse

void ImDrawList::AddEllipse(const ImVec2& center, const ImVec2& radius, ImU32 col, float rot, int num_segments, float thickness)

{

if ((col & IM_COL32_A_MASK) == 0)

return;

if (num_segments <= 0)

num_segments = _CalcCircleAutoSegmentCount(ImMax(radius.x, radius.y)); // A bit pessimistic, maybe there's a better computation to do here.

// Because we are filling a closed shape we remove 1 from the count of segments/points

const float a_max = IM_PI * 2.0f * ((float)num_segments - 1.0f) / (float)num_segments;

PathEllipticalArcTo(center, radius, rot, 0.0f, a_max, num_segments - 1);

PathStroke(col, true, thickness);

}

void ImDrawList::AddEllipseFilled(const ImVec2& center, const ImVec2& radius, ImU32 col, float rot, int num_segments)

{

if ((col & IM_COL32_A_MASK) == 0)

return;

if (num_segments <= 0)

num_segments = _CalcCircleAutoSegmentCount(ImMax(radius.x, radius.y)); // A bit pessimistic, maybe there's a better computation to do here.

// Because we are filling a closed shape we remove 1 from the count of segments/points

const float a_max = IM_PI * 2.0f * ((float)num_segments - 1.0f) / (float)num_segments;

PathEllipticalArcTo(center, radius, rot, 0.0f, a_max, num_segments - 1);

PathFillConvex(col);

}

// Cubic Bezier takes 4 controls points

void ImDrawList::AddBezierCubic(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, ImU32 col, float thickness, int num_segments)

{

if ((col & IM_COL32_A_MASK) == 0)

return;

PathLineTo(p1);

PathBezierCubicCurveTo(p2, p3, p4, num_segments);

PathStroke(col, 0, thickness);

}

// Quadratic Bezier takes 3 controls points

void ImDrawList::AddBezierQuadratic(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, ImU32 col, float thickness, int num_segments)

{

if ((col & IM_COL32_A_MASK) == 0)

return;

PathLineTo(p1);

PathBezierQuadraticCurveTo(p2, p3, num_segments);

PathStroke(col, 0, thickness);

}

void ImDrawList::AddText(ImFont* font, float font_size, const ImVec2& pos, ImU32 col, const char* text_begin, const char* text_end, float wrap_width, const ImVec4* cpu_fine_clip_rect)

{

if ((col & IM_COL32_A_MASK) == 0)

return;

// Accept null ranges

if (text_begin == text_end || text_begin[0] == 0)

return;

// No need to strlen() here: font->RenderText() will do it and may early out.

// Pull default font/size from the shared ImDrawListSharedData instance

if (font == NULL)

font = _Data->Font;

if (font_size == 0.0f)

font_size = _Data->FontSize;

IM_ASSERT(font->ContainerAtlas->TexID == _CmdHeader.TextureId); // Use high-level ImGui::PushFont() or low-level ImDrawList::PushTextureId() to change font.

ImVec4 clip_rect = _CmdHeader.ClipRect;

if (cpu_fine_clip_rect)

{

clip_rect.x = ImMax(clip_rect.x, cpu_fine_clip_rect->x);

clip_rect.y = ImMax(clip_rect.y, cpu_fine_clip_rect->y);

clip_rect.z = ImMin(clip_rect.z, cpu_fine_clip_rect->z);

clip_rect.w = ImMin(clip_rect.w, cpu_fine_clip_rect->w);

}

font->RenderText(this, font_size, pos, col, clip_rect, text_begin, text_end, wrap_width, cpu_fine_clip_rect != NULL);

}

void ImDrawList::AddText(const ImVec2& pos, ImU32 col, const char* text_begin, const char* text_end)

{

AddText(_Data->Font, _Data->FontSize, pos, col, text_begin, text_end);

}

void ImDrawList::AddImage(ImTextureID user_texture_id, const ImVec2& p_min, const ImVec2& p_max, const ImVec2& uv_min, const ImVec2& uv_max, ImU32 col)

{

if ((col & IM_COL32_A_MASK) == 0)

return;

const bool push_texture_id = user_texture_id != _CmdHeader.TextureId;

if (push_texture_id)

PushTextureID(user_texture_id);

PrimReserve(6, 4);

PrimRectUV(p_min, p_max, uv_min, uv_max, col);

if (push_texture_id)

PopTextureID();

}

void ImDrawList::AddImageQuad(ImTextureID user_texture_id, const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, const ImVec2& uv1, const ImVec2& uv2, const ImVec2& uv3, const ImVec2& uv4, ImU32 col)

{

if ((col & IM_COL32_A_MASK) == 0)

return;

const bool push_texture_id = user_texture_id != _CmdHeader.TextureId;

if (push_texture_id)

PushTextureID(user_texture_id);

PrimReserve(6, 4);

PrimQuadUV(p1, p2, p3, p4, uv1, uv2, uv3, uv4, col);

if (push_texture_id)

PopTextureID();

}

void ImDrawList::AddImageRounded(ImTextureID user_texture_id, const ImVec2& p_min, const ImVec2& p_max, const ImVec2& uv_min, const ImVec2& uv_max, ImU32 col, float rounding, ImDrawFlags flags)

{

if ((col & IM_COL32_A_MASK) == 0)

return;

flags = FixRectCornerFlags(flags);

if (rounding < 0.5f || (flags & ImDrawFlags_RoundCornersMask_) == ImDrawFlags_RoundCornersNone)

{

AddImage(user_texture_id, p_min, p_max, uv_min, uv_max, col);

return;

}

const bool push_texture_id = user_texture_id != _CmdHeader.TextureId;

if (push_texture_id)

PushTextureID(user_texture_id);

int vert_start_idx = VtxBuffer.Size;

PathRect(p_min, p_max, rounding, flags);

PathFillConvex(col);

int vert_end_idx = VtxBuffer.Size;

ImGui::ShadeVertsLinearUV(this, vert_start_idx, vert_end_idx, p_min, p_max, uv_min, uv_max, true);

if (push_texture_id)

PopTextureID();

}

//-----------------------------------------------------------------------------

// [SECTION] ImTriangulator, ImDrawList concave polygon fill

//-----------------------------------------------------------------------------

// Triangulate concave polygons. Based on "Triangulation by Ear Clipping" paper, O(N^2) complexity.

// Reference: https://www.geometrictools.com/Documentation/TriangulationByEarClipping.pdf

// Provided as a convenience for user but not used by main library.

//-----------------------------------------------------------------------------

// - ImTriangulator [Internal]

// - AddConcavePolyFilled()

//-----------------------------------------------------------------------------

enum ImTriangulatorNodeType

{

ImTriangulatorNodeType_Convex,

ImTriangulatorNodeType_Ear,

ImTriangulatorNodeType_Reflex

};

struct ImTriangulatorNode

{

ImTriangulatorNodeType Type;

int Index;

ImVec2 Pos;

ImTriangulatorNode* Next;

ImTriangulatorNode* Prev;

void Unlink() { Next->Prev = Prev; Prev->Next = Next; }

};

struct ImTriangulatorNodeSpan

{

ImTriangulatorNode** Data = NULL;

int Size = 0;

void push_back(ImTriangulatorNode* node) { Data[Size++] = node; }

void find_erase_unsorted(int idx) { for (int i = Size - 1; i >= 0; i--) if (Data[i]->Index == idx) { Data[i] = Data[Size - 1]; Size--; return; } }

};

struct ImTriangulator

{

static int EstimateTriangleCount(int points_count) { return (points_count < 3) ? 0 : points_count - 2; }

static int EstimateScratchBufferSize(int points_count) { return sizeof(ImTriangulatorNode) * points_count + sizeof(ImTriangulatorNode*) * points_count * 2; }

void Init(const ImVec2* points, int points_count, void* scratch_buffer);

void GetNextTriangle(unsigned int out_triangle[3]); // Return relative indexes for next triangle

// Internal functions

void BuildNodes(const ImVec2* points, int points_count);

void BuildReflexes();

void BuildEars();

void FlipNodeList();

bool IsEar(int i0, int i1, int i2, const ImVec2& v0, const ImVec2& v1, const ImVec2& v2) const;

void ReclassifyNode(ImTriangulatorNode* node);

// Internal members

int _TrianglesLeft = 0;

ImTriangulatorNode* _Nodes = NULL;

ImTriangulatorNodeSpan _Ears;

ImTriangulatorNodeSpan _Reflexes;

};

// Distribute storage for nodes, ears and reflexes.

// FIXME-OPT: if everything is convex, we could report it to caller and let it switch to an convex renderer

// (this would require first building reflexes to bail to convex if empty, without even building nodes)

void ImTriangulator::Init(const ImVec2* points, int points_count, void* scratch_buffer)

{

IM_ASSERT(scratch_buffer != NULL && points_count >= 3);

_TrianglesLeft = EstimateTriangleCount(points_count);

_Nodes = (ImTriangulatorNode*)scratch_buffer; // points_count x Node

_Ears.Data = (ImTriangulatorNode**)(_Nodes + points_count); // points_count x Node*

_Reflexes.Data = (ImTriangulatorNode**)(_Nodes + points_count) + points_count; // points_count x Node*

BuildNodes(points, points_count);

BuildReflexes();

BuildEars();

}

void ImTriangulator::BuildNodes(const ImVec2* points, int points_count)

{

for (int i = 0; i < points_count; i++)

{

_Nodes[i].Type = ImTriangulatorNodeType_Convex;

_Nodes[i].Index = i;

_Nodes[i].Pos = points[i];

_Nodes[i].Next = _Nodes + i + 1;

_Nodes[i].Prev = _Nodes + i - 1;

}

_Nodes[0].Prev = _Nodes + points_count - 1;

_Nodes[points_count - 1].Next = _Nodes;

}

void ImTriangulator::BuildReflexes()

{

ImTriangulatorNode* n1 = _Nodes;

for (int i = _TrianglesLeft; i >= 0; i--, n1 = n1->Next)

{

if (ImTriangleIsClockwise(n1->Prev->Pos, n1->Pos, n1->Next->Pos))

continue;

n1->Type = ImTriangulatorNodeType_Reflex;

_Reflexes.push_back(n1);

}

void ImTriangulator::BuildEars()

{

ImTriangulatorNode* n1 = _Nodes;

for (int i = _TrianglesLeft; i >= 0; i--, n1 = n1->Next)

{

if (n1->Type != ImTriangulatorNodeType_Convex)

continue;

if (!IsEar(n1->Prev->Index, n1->Index, n1->Next->Index, n1->Prev->Pos, n1->Pos, n1->Next->Pos))

continue;

n1->Type = ImTriangulatorNodeType_Ear;

_Ears.push_back(n1);

}

void ImTriangulator::GetNextTriangle(unsigned int out_triangle[3])

{

if (_Ears.Size == 0)

{

FlipNodeList();

ImTriangulatorNode* node = _Nodes;

for (int i = _TrianglesLeft; i >= 0; i--, node = node->Next)

node->Type = ImTriangulatorNodeType_Convex;

_Reflexes.Size = 0;

BuildReflexes();

BuildEars();

// If we still don't have ears, it means geometry is degenerated.

if (_Ears.Size == 0)

{

// Return first triangle available, mimicking the behavior of convex fill.

IM_ASSERT(_TrianglesLeft > 0); // Geometry is degenerated

_Ears.Data[0] = _Nodes;

_Ears.Size = 1;

}

ImTriangulatorNode* ear = _Ears.Data[--_Ears.Size];

out_triangle[0] = ear->Prev->Index;

out_triangle[1] = ear->Index;

out_triangle[2] = ear->Next->Index;

ear->Unlink();

if (ear == _Nodes)

_Nodes = ear->Next;

ReclassifyNode(ear->Prev);

ReclassifyNode(ear->Next);

_TrianglesLeft--;

}

void ImTriangulator::FlipNodeList()

{

ImTriangulatorNode* prev = _Nodes;

ImTriangulatorNode* temp = _Nodes;

ImTriangulatorNode* current = _Nodes->Next;

prev->Next = prev;

prev->Prev = prev;

while (current != _Nodes)

{

temp = current->Next;

current->Next = prev;

prev->Prev = current;

_Nodes->Next = current;

current->Prev = _Nodes;

prev = current;

current = temp;

}

_Nodes = prev;

}

// A triangle is an ear is no other vertex is inside it. We can test reflexes vertices only (see reference algorithm)

bool ImTriangulator::IsEar(int i0, int i1, int i2, const ImVec2& v0, const ImVec2& v1, const ImVec2& v2) const

{

ImTriangulatorNode** p_end = _Reflexes.Data + _Reflexes.Size;

for (ImTriangulatorNode** p = _Reflexes.Data; p < p_end; p++)

{

ImTriangulatorNode* reflex = *p;

if (reflex->Index != i0 && reflex->Index != i1 && reflex->Index != i2)

if (ImTriangleContainsPoint(v0, v1, v2, reflex->Pos))

return false;

}

return true;

}

void ImTriangulator::ReclassifyNode(ImTriangulatorNode* n1)

{

// Classify node

ImTriangulatorNodeType type;

const ImTriangulatorNode* n0 = n1->Prev;

const ImTriangulatorNode* n2 = n1->Next;

if (!ImTriangleIsClockwise(n0->Pos, n1->Pos, n2->Pos))

type = ImTriangulatorNodeType_Reflex;

else if (IsEar(n0->Index, n1->Index, n2->Index, n0->Pos, n1->Pos, n2->Pos))

type = ImTriangulatorNodeType_Ear;

else

type = ImTriangulatorNodeType_Convex;

// Update lists when a type changes

if (type == n1->Type)

return;

if (n1->Type == ImTriangulatorNodeType_Reflex)

_Reflexes.find_erase_unsorted(n1->Index);

else if (n1->Type == ImTriangulatorNodeType_Ear)

_Ears.find_erase_unsorted(n1->Index);

if (type == ImTriangulatorNodeType_Reflex)

_Reflexes.push_back(n1);

else if (type == ImTriangulatorNodeType_Ear)

_Ears.push_back(n1);

n1->Type = type;

}

// Use ear-clipping algorithm to triangulate a simple polygon (no self-interaction, no holes).

// (Reminder: we don't perform any coarse clipping/culling in ImDrawList layer!

// It is up to caller to ensure not making costly calls that will be outside of visible area.

// As concave fill is noticeably more expensive than other primitives, be mindful of this...

// Caller can build AABB of points, and avoid filling if 'draw_list->_CmdHeader.ClipRect.Overlays(points_bb) == false')

void ImDrawList::AddConcavePolyFilled(const ImVec2* points, const int points_count, ImU32 col)

{

if (points_count < 3 || (col & IM_COL32_A_MASK) == 0)

return;

const ImVec2 uv = _Data->TexUvWhitePixel;

ImTriangulator triangulator;

unsigned int triangle[3];

if (Flags & ImDrawListFlags_AntiAliasedFill)

{

// Anti-aliased Fill

const float AA_SIZE = _FringeScale;

const ImU32 col_trans = col & ~IM_COL32_A_MASK;

const int idx_count = (points_count - 2) * 3 + points_count * 6;

const int vtx_count = (points_count * 2);

PrimReserve(idx_count, vtx_count);

// Add indexes for fill

unsigned int vtx_inner_idx = _VtxCurrentIdx;

unsigned int vtx_outer_idx = _VtxCurrentIdx + 1;

_Data->TempBuffer.reserve_discard((ImTriangulator::EstimateScratchBufferSize(points_count) + sizeof(ImVec2)) / sizeof(ImVec2));

triangulator.Init(points, points_count, _Data->TempBuffer.Data);

while (triangulator._TrianglesLeft > 0)

{

triangulator.GetNextTriangle(triangle);

_IdxWritePtr[0] = (ImDrawIdx)(vtx_inner_idx + (triangle[0] << 1)); _IdxWritePtr[1] = (ImDrawIdx)(vtx_inner_idx + (triangle[1] << 1)); _IdxWritePtr[2] = (ImDrawIdx)(vtx_inner_idx + (triangle[2] << 1));

_IdxWritePtr += 3;

}

// Compute normals

_Data->TempBuffer.reserve_discard(points_count);

ImVec2* temp_normals = _Data->TempBuffer.Data;

for (int i0 = points_count - 1, i1 = 0; i1 < points_count; i0 = i1++)

{

const ImVec2& p0 = points[i0];

const ImVec2& p1 = points[i1];

float dx = p1.x - p0.x;

float dy = p1.y - p0.y;

IM_NORMALIZE2F_OVER_ZERO(dx, dy);

temp_normals[i0].x = dy;

temp_normals[i0].y = -dx;

}

for (int i0 = points_count - 1, i1 = 0; i1 < points_count; i0 = i1++)

{

// Average normals

const ImVec2& n0 = temp_normals[i0];

const ImVec2& n1 = temp_normals[i1];

float dm_x = (n0.x + n1.x) * 0.5f;

float dm_y = (n0.y + n1.y) * 0.5f;

IM_FIXNORMAL2F(dm_x, dm_y);

dm_x *= AA_SIZE * 0.5f;

dm_y *= AA_SIZE * 0.5f;

// Add vertices

_VtxWritePtr[0].pos.x = (points[i1].x - dm_x); _VtxWritePtr[0].pos.y = (points[i1].y - dm_y); _VtxWritePtr[0].uv = uv; _VtxWritePtr[0].col = col; // Inner

_VtxWritePtr[1].pos.x = (points[i1].x + dm_x); _VtxWritePtr[1].pos.y = (points[i1].y + dm_y); _VtxWritePtr[1].uv = uv; _VtxWritePtr[1].col = col_trans; // Outer

_VtxWritePtr += 2;

// Add indexes for fringes

_IdxWritePtr[0] = (ImDrawIdx)(vtx_inner_idx + (i1 << 1)); _IdxWritePtr[1] = (ImDrawIdx)(vtx_inner_idx + (i0 << 1)); _IdxWritePtr[2] = (ImDrawIdx)(vtx_outer_idx + (i0 << 1));

_IdxWritePtr[3] = (ImDrawIdx)(vtx_outer_idx + (i0 << 1)); _IdxWritePtr[4] = (ImDrawIdx)(vtx_outer_idx + (i1 << 1)); _IdxWritePtr[5] = (ImDrawIdx)(vtx_inner_idx + (i1 << 1));

_IdxWritePtr += 6;

}

_VtxCurrentIdx += (ImDrawIdx)vtx_count;

}

else

{

// Non Anti-aliased Fill

const int idx_count = (points_count - 2) * 3;

const int vtx_count = points_count;

PrimReserve(idx_count, vtx_count);

for (int i = 0; i < vtx_count; i++)

{

_VtxWritePtr[0].pos = points[i]; _VtxWritePtr[0].uv = uv; _VtxWritePtr[0].col = col;

_VtxWritePtr++;

}

_Data->TempBuffer.reserve_discard((ImTriangulator::EstimateScratchBufferSize(points_count) + sizeof(ImVec2)) / sizeof(ImVec2));

triangulator.Init(points, points_count, _Data->TempBuffer.Data);

while (triangulator._TrianglesLeft > 0)

{

triangulator.GetNextTriangle(triangle);

_IdxWritePtr[0] = (ImDrawIdx)(_VtxCurrentIdx + triangle[0]); _IdxWritePtr[1] = (ImDrawIdx)(_VtxCurrentIdx + triangle[1]); _IdxWritePtr[2] = (ImDrawIdx)(_VtxCurrentIdx + triangle[2]);

_IdxWritePtr += 3;

}

_VtxCurrentIdx += (ImDrawIdx)vtx_count;

}

//-----------------------------------------------------------------------------

// [SECTION] ImDrawListSplitter

//-----------------------------------------------------------------------------

// FIXME: This may be a little confusing, trying to be a little too low-level/optimal instead of just doing vector swap..

//-----------------------------------------------------------------------------

void ImDrawListSplitter::ClearFreeMemory()

{

for (int i = 0; i < _Channels.Size; i++)

{

if (i == _Current)

memset(&_Channels[i], 0, sizeof(_Channels[i])); // Current channel is a copy of CmdBuffer/IdxBuffer, don't destruct again

_Channels[i]._CmdBuffer.clear();

_Channels[i]._IdxBuffer.clear();

}

_Current = 0;

_Count = 1;

_Channels.clear();

}

void ImDrawListSplitter::Split(ImDrawList* draw_list, int channels_count)

{

IM_UNUSED(draw_list);

IM_ASSERT(_Current == 0 && _Count <= 1 && "Nested channel splitting is not supported. Please use separate instances of ImDrawListSplitter.");

int old_channels_count = _Channels.Size;

if (old_channels_count < channels_count)

{

_Channels.reserve(channels_count); // Avoid over reserving since this is likely to stay stable

_Channels.resize(channels_count);

}

_Count = channels_count;

// Channels[] (24/32 bytes each) hold storage that we'll swap with draw_list->_CmdBuffer/_IdxBuffer

// The content of Channels[0] at this point doesn't matter. We clear it to make state tidy in a debugger but we don't strictly need to.

// When we switch to the next channel, we'll copy draw_list->_CmdBuffer/_IdxBuffer into Channels[0] and then Channels[1] into draw_list->CmdBuffer/_IdxBuffer

memset(&_Channels[0], 0, sizeof(ImDrawChannel));

for (int i = 1; i < channels_count; i++)

{

if (i >= old_channels_count)

{

IM_PLACEMENT_NEW(&_Channels[i]) ImDrawChannel();

}

else

{

_Channels[i]._CmdBuffer.resize(0);

_Channels[i]._IdxBuffer.resize(0);

}

void ImDrawListSplitter::Merge(ImDrawList* draw_list)

{

// Note that we never use or rely on _Channels.Size because it is merely a buffer that we never shrink back to 0 to keep all sub-buffers ready for use.

if (_Count <= 1)

return;

SetCurrentChannel(draw_list, 0);

draw_list->_PopUnusedDrawCmd();

// Calculate our final buffer sizes. Also fix the incorrect IdxOffset values in each command.

int new_cmd_buffer_count = 0;

int new_idx_buffer_count = 0;

ImDrawCmd* last_cmd = (_Count > 0 && draw_list->CmdBuffer.Size > 0) ? &draw_list->CmdBuffer.back() : NULL;

int idx_offset = last_cmd ? last_cmd->IdxOffset + last_cmd->ElemCount : 0;

for (int i = 1; i < _Count; i++)

{

ImDrawChannel& ch = _Channels[i];

if (ch._CmdBuffer.Size > 0 && ch._CmdBuffer.back().ElemCount == 0 && ch._CmdBuffer.back().UserCallback == NULL) // Equivalent of PopUnusedDrawCmd()

ch._CmdBuffer.pop_back();

if (ch._CmdBuffer.Size > 0 && last_cmd != NULL)

{

// Do not include ImDrawCmd_AreSequentialIdxOffset() in the compare as we rebuild IdxOffset values ourselves.

// Manipulating IdxOffset (e.g. by reordering draw commands like done by RenderDimmedBackgroundBehindWindow()) is not supported within a splitter.

ImDrawCmd* next_cmd = &ch._CmdBuffer[0];

if (ImDrawCmd_HeaderCompare(last_cmd, next_cmd) == 0 && last_cmd->UserCallback == NULL && next_cmd->UserCallback == NULL)

{

// Merge previous channel last draw command with current channel first draw command if matching.

last_cmd->ElemCount += next_cmd->ElemCount;

idx_offset += next_cmd->ElemCount;

ch._CmdBuffer.erase(ch._CmdBuffer.Data); // FIXME-OPT: Improve for multiple merges.

}

if (ch._CmdBuffer.Size > 0)

last_cmd = &ch._CmdBuffer.back();

new_cmd_buffer_count += ch._CmdBuffer.Size;

new_idx_buffer_count += ch._IdxBuffer.Size;

for (int cmd_n = 0; cmd_n < ch._CmdBuffer.Size; cmd_n++)

{

ch._CmdBuffer.Data[cmd_n].IdxOffset = idx_offset;

idx_offset += ch._CmdBuffer.Data[cmd_n].ElemCount;

}

draw_list->CmdBuffer.resize(draw_list->CmdBuffer.Size + new_cmd_buffer_count);

draw_list->IdxBuffer.resize(draw_list->IdxBuffer.Size + new_idx_buffer_count);

// Write commands and indices in order (they are fairly small structures, we don't copy vertices only indices)

ImDrawCmd* cmd_write = draw_list->CmdBuffer.Data + draw_list->CmdBuffer.Size - new_cmd_buffer_count;

ImDrawIdx* idx_write = draw_list->IdxBuffer.Data + draw_list->IdxBuffer.Size - new_idx_buffer_count;

for (int i = 1; i < _Count; i++)

{

ImDrawChannel& ch = _Channels[i];

if (int sz = ch._CmdBuffer.Size) { memcpy(cmd_write, ch._CmdBuffer.Data, sz * sizeof(ImDrawCmd)); cmd_write += sz; }

if (int sz = ch._IdxBuffer.Size) { memcpy(idx_write, ch._IdxBuffer.Data, sz * sizeof(ImDrawIdx)); idx_write += sz; }

}

draw_list->_IdxWritePtr = idx_write;

// Ensure there's always a non-callback draw command trailing the command-buffer

if (draw_list->CmdBuffer.Size == 0 || draw_list->CmdBuffer.back().UserCallback != NULL)

draw_list->AddDrawCmd();

// If current command is used with different settings we need to add a new command

ImDrawCmd* curr_cmd = &draw_list->CmdBuffer.Data[draw_list->CmdBuffer.Size - 1];

if (curr_cmd->ElemCount == 0)

ImDrawCmd_HeaderCopy(curr_cmd, &draw_list->_CmdHeader); // Copy ClipRect, TextureId, VtxOffset

else if (ImDrawCmd_HeaderCompare(curr_cmd, &draw_list->_CmdHeader) != 0)

draw_list->AddDrawCmd();

_Count = 1;

}

void ImDrawListSplitter::SetCurrentChannel(ImDrawList* draw_list, int idx)

{

IM_ASSERT(idx >= 0 && idx < _Count);

if (_Current == idx)

return;

// Overwrite ImVector (12/16 bytes), four times. This is merely a silly optimization instead of doing .swap()

memcpy(&_Channels.Data[_Current]._CmdBuffer, &draw_list->CmdBuffer, sizeof(draw_list->CmdBuffer));

memcpy(&_Channels.Data[_Current]._IdxBuffer, &draw_list->IdxBuffer, sizeof(draw_list->IdxBuffer));

_Current = idx;

memcpy(&draw_list->CmdBuffer, &_Channels.Data[idx]._CmdBuffer, sizeof(draw_list->CmdBuffer));

memcpy(&draw_list->IdxBuffer, &_Channels.Data[idx]._IdxBuffer, sizeof(draw_list->IdxBuffer));

draw_list->_IdxWritePtr = draw_list->IdxBuffer.Data + draw_list->IdxBuffer.Size;

// If current command is used with different settings we need to add a new command

ImDrawCmd* curr_cmd = (draw_list->CmdBuffer.Size == 0) ? NULL : &draw_list->CmdBuffer.Data[draw_list->CmdBuffer.Size - 1];

if (curr_cmd == NULL)

draw_list->AddDrawCmd();

else if (curr_cmd->ElemCount == 0)

ImDrawCmd_HeaderCopy(curr_cmd, &draw_list->_CmdHeader); // Copy ClipRect, TextureId, VtxOffset

else if (ImDrawCmd_HeaderCompare(curr_cmd, &draw_list->_CmdHeader) != 0)

draw_list->AddDrawCmd();

}

//-----------------------------------------------------------------------------

// [SECTION] ImDrawData

//-----------------------------------------------------------------------------

void ImDrawData::Clear()

{

Valid = false;

CmdListsCount = TotalIdxCount = TotalVtxCount = 0;

CmdLists.resize(0); // The ImDrawList are NOT owned by ImDrawData but e.g. by ImGuiContext, so we don't clear them.

DisplayPos = DisplaySize = FramebufferScale = ImVec2(0.0f, 0.0f);

OwnerViewport = NULL;

}

// Important: 'out_list' is generally going to be draw_data->CmdLists, but may be another temporary list

// as long at it is expected that the result will be later merged into draw_data->CmdLists[].

void ImGui::AddDrawListToDrawDataEx(ImDrawData* draw_data, ImVector<ImDrawList*>* out_list, ImDrawList* draw_list)

{

if (draw_list->CmdBuffer.Size == 0)

return;

if (draw_list->CmdBuffer.Size == 1 && draw_list->CmdBuffer[0].ElemCount == 0 && draw_list->CmdBuffer[0].UserCallback == NULL)

return;

// Draw list sanity check. Detect mismatch between PrimReserve() calls and incrementing _VtxCurrentIdx, _VtxWritePtr etc.

// May trigger for you if you are using PrimXXX functions incorrectly.

IM_ASSERT(draw_list->VtxBuffer.Size == 0 || draw_list->_VtxWritePtr == draw_list->VtxBuffer.Data + draw_list->VtxBuffer.Size);

IM_ASSERT(draw_list->IdxBuffer.Size == 0 || draw_list->_IdxWritePtr == draw_list->IdxBuffer.Data + draw_list->IdxBuffer.Size);

if (!(draw_list->Flags & ImDrawListFlags_AllowVtxOffset))

IM_ASSERT((int)draw_list->_VtxCurrentIdx == draw_list->VtxBuffer.Size);

// Check that draw_list doesn't use more vertices than indexable (default ImDrawIdx = unsigned short = 2 bytes = 64K vertices per ImDrawList = per window)

// If this assert triggers because you are drawing lots of stuff manually:

// - First, make sure you are coarse clipping yourself and not trying to draw many things outside visible bounds.

// Be mindful that the lower-level ImDrawList API doesn't filter vertices. Use the Metrics/Debugger window to inspect draw list contents.

// - If you want large meshes with more than 64K vertices, you can either:

// (A) Handle the ImDrawCmd::VtxOffset value in your renderer backend, and set 'io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset'.

// Most example backends already support this from 1.71. Pre-1.71 backends won't.

// Some graphics API such as GL ES 1/2 don't have a way to offset the starting vertex so it is not supported for them.

// (B) Or handle 32-bit indices in your renderer backend, and uncomment '#define ImDrawIdx unsigned int' line in imconfig.h.

// Most example backends already support this. For example, the OpenGL example code detect index size at compile-time:

// glDrawElements(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, idx_buffer_offset);

// Your own engine or render API may use different parameters or function calls to specify index sizes.

// 2 and 4 bytes indices are generally supported by most graphics API.

// - If for some reason neither of those solutions works for you, a workaround is to call BeginChild()/EndChild() before reaching

// the 64K limit to split your draw commands in multiple draw lists.

if (sizeof(ImDrawIdx) == 2)

IM_ASSERT(draw_list->_VtxCurrentIdx < (1 << 16) && "Too many vertices in ImDrawList using 16-bit indices. Read comment above");

// Resolve callback data pointers

if (draw_list->_CallbacksDataBuf.Size > 0)

for (ImDrawCmd& cmd : draw_list->CmdBuffer)

if (cmd.UserCallback != NULL && cmd.UserCallbackDataOffset != -1 && cmd.UserCallbackDataSize > 0)

cmd.UserCallbackData = draw_list->_CallbacksDataBuf.Data + cmd.UserCallbackDataOffset;

// Add to output list + records state in ImDrawData

out_list->push_back(draw_list);

draw_data->CmdListsCount++;

draw_data->TotalVtxCount += draw_list->VtxBuffer.Size;

draw_data->TotalIdxCount += draw_list->IdxBuffer.Size;

}

void ImDrawData::AddDrawList(ImDrawList* draw_list)

{

IM_ASSERT(CmdLists.Size == CmdListsCount);

draw_list->_PopUnusedDrawCmd();

ImGui::AddDrawListToDrawDataEx(this, &CmdLists, draw_list);

}

// For backward compatibility: convert all buffers from indexed to de-indexed, in case you cannot render indexed. Note: this is slow and most likely a waste of resources. Always prefer indexed rendering!

void ImDrawData::DeIndexAllBuffers()

{

ImVector<ImDrawVert> new_vtx_buffer;

TotalVtxCount = TotalIdxCount = 0;

for (int i = 0; i < CmdListsCount; i++)

{

ImDrawList* cmd_list = CmdLists[i];

if (cmd_list->IdxBuffer.empty())

continue;

new_vtx_buffer.resize(cmd_list->IdxBuffer.Size);

for (int j = 0; j < cmd_list->IdxBuffer.Size; j++)

new_vtx_buffer[j] = cmd_list->VtxBuffer[cmd_list->IdxBuffer[j]];

cmd_list->VtxBuffer.swap(new_vtx_buffer);

cmd_list->IdxBuffer.resize(0);

TotalVtxCount += cmd_list->VtxBuffer.Size;

}

// Helper to scale the ClipRect field of each ImDrawCmd.

// Use if your final output buffer is at a different scale than draw_data->DisplaySize,

// or if there is a difference between your window resolution and framebuffer resolution.

void ImDrawData::ScaleClipRects(const ImVec2& fb_scale)

{

for (ImDrawList* draw_list : CmdLists)

for (ImDrawCmd& cmd : draw_list->CmdBuffer)

cmd.ClipRect = ImVec4(cmd.ClipRect.x * fb_scale.x, cmd.ClipRect.y * fb_scale.y, cmd.ClipRect.z * fb_scale.x, cmd.ClipRect.w * fb_scale.y);

}

//-----------------------------------------------------------------------------

// [SECTION] Helpers ShadeVertsXXX functions

//-----------------------------------------------------------------------------

// Generic linear color gradient, write to RGB fields, leave A untouched.

void ImGui::ShadeVertsLinearColorGradientKeepAlpha(ImDrawList* draw_list, int vert_start_idx, int vert_end_idx, ImVec2 gradient_p0, ImVec2 gradient_p1, ImU32 col0, ImU32 col1)

{

ImVec2 gradient_extent = gradient_p1 - gradient_p0;

float gradient_inv_length2 = 1.0f / ImLengthSqr(gradient_extent);

ImDrawVert* vert_start = draw_list->VtxBuffer.Data + vert_start_idx;

ImDrawVert* vert_end = draw_list->VtxBuffer.Data + vert_end_idx;

const int col0_r = (int)(col0 >> IM_COL32_R_SHIFT) & 0xFF;

const int col0_g = (int)(col0 >> IM_COL32_G_SHIFT) & 0xFF;

const int col0_b = (int)(col0 >> IM_COL32_B_SHIFT) & 0xFF;

const int col_delta_r = ((int)(col1 >> IM_COL32_R_SHIFT) & 0xFF) - col0_r;

const int col_delta_g = ((int)(col1 >> IM_COL32_G_SHIFT) & 0xFF) - col0_g;

const int col_delta_b = ((int)(col1 >> IM_COL32_B_SHIFT) & 0xFF) - col0_b;

for (ImDrawVert* vert = vert_start; vert < vert_end; vert++)

{

float d = ImDot(vert->pos - gradient_p0, gradient_extent);

float t = ImClamp(d * gradient_inv_length2, 0.0f, 1.0f);

int r = (int)(col0_r + col_delta_r * t);

int g = (int)(col0_g + col_delta_g * t);

int b = (int)(col0_b + col_delta_b * t);

vert->col = (r << IM_COL32_R_SHIFT) | (g << IM_COL32_G_SHIFT) | (b << IM_COL32_B_SHIFT) | (vert->col & IM_COL32_A_MASK);

}

// Distribute UV over (a, b) rectangle

void ImGui::ShadeVertsLinearUV(ImDrawList* draw_list, int vert_start_idx, int vert_end_idx, const ImVec2& a, const ImVec2& b, const ImVec2& uv_a, const ImVec2& uv_b, bool clamp)

{

const ImVec2 size = b - a;

const ImVec2 uv_size = uv_b - uv_a;

const ImVec2 scale = ImVec2(

size.x != 0.0f ? (uv_size.x / size.x) : 0.0f,

size.y != 0.0f ? (uv_size.y / size.y) : 0.0f);

ImDrawVert* vert_start = draw_list->VtxBuffer.Data + vert_start_idx;

ImDrawVert* vert_end = draw_list->VtxBuffer.Data + vert_end_idx;

if (clamp)

{

const ImVec2 min = ImMin(uv_a, uv_b);

const ImVec2 max = ImMax(uv_a, uv_b);

for (ImDrawVert* vertex = vert_start; vertex < vert_end; ++vertex)

vertex->uv = ImClamp(uv_a + ImMul(ImVec2(vertex->pos.x, vertex->pos.y) - a, scale), min, max);

}

else

{

for (ImDrawVert* vertex = vert_start; vertex < vert_end; ++vertex)

vertex->uv = uv_a + ImMul(ImVec2(vertex->pos.x, vertex->pos.y) - a, scale);

}

void ImGui::ShadeVertsTransformPos(ImDrawList* draw_list, int vert_start_idx, int vert_end_idx, const ImVec2& pivot_in, float cos_a, float sin_a, const ImVec2& pivot_out)

{

ImDrawVert* vert_start = draw_list->VtxBuffer.Data + vert_start_idx;

ImDrawVert* vert_end = draw_list->VtxBuffer.Data + vert_end_idx;

for (ImDrawVert* vertex = vert_start; vertex < vert_end; ++vertex)

vertex->pos = ImRotate(vertex->pos- pivot_in, cos_a, sin_a) + pivot_out;

}

//-----------------------------------------------------------------------------

// [SECTION] ImFontConfig

//-----------------------------------------------------------------------------

ImFontConfig::ImFontConfig()

{

memset(this, 0, sizeof(*this));

FontDataOwnedByAtlas = true;

OversampleH = 0; // Auto == 1 or 2 depending on size

OversampleV = 0; // Auto == 1

GlyphMaxAdvanceX = FLT_MAX;

RasterizerMultiply = 1.0f;

RasterizerDensity = 1.0f;

EllipsisChar = 0;

}

//-----------------------------------------------------------------------------

// [SECTION] ImFontAtlas

//-----------------------------------------------------------------------------

// - Default texture data encoded in ASCII

// - ImFontAtlas::ClearInputData()

// - ImFontAtlas::ClearTexData()

// - ImFontAtlas::ClearFonts()

// - ImFontAtlas::Clear()

// - ImFontAtlas::GetTexDataAsAlpha8()

// - ImFontAtlas::GetTexDataAsRGBA32()

// - ImFontAtlas::AddFont()

// - ImFontAtlas::AddFontDefault()

// - ImFontAtlas::AddFontFromFileTTF()

// - ImFontAtlas::AddFontFromMemoryTTF()

// - ImFontAtlas::AddFontFromMemoryCompressedTTF()

// - ImFontAtlas::AddFontFromMemoryCompressedBase85TTF()

// - ImFontAtlas::AddCustomRectRegular()

// - ImFontAtlas::AddCustomRectFontGlyph()

// - ImFontAtlas::CalcCustomRectUV()

// - ImFontAtlasGetMouseCursorTexData()

// - ImFontAtlas::Build()

// - ImFontAtlasBuildMultiplyCalcLookupTable()

// - ImFontAtlasBuildMultiplyRectAlpha8()

// - ImFontAtlasBuildWithStbTruetype()

// - ImFontAtlasGetBuilderForStbTruetype()

// - ImFontAtlasUpdateConfigDataPointers()

// - ImFontAtlasBuildSetupFont()

// - ImFontAtlasBuildPackCustomRects()

// - ImFontAtlasBuildRender8bppRectFromString()

// - ImFontAtlasBuildRender32bppRectFromString()

// - ImFontAtlasBuildRenderDefaultTexData()

// - ImFontAtlasBuildRenderLinesTexData()

// - ImFontAtlasBuildInit()

// - ImFontAtlasBuildFinish()

//-----------------------------------------------------------------------------

// A work of art lies ahead! (. = white layer, X = black layer, others are blank)

// The 2x2 white texels on the top left are the ones we'll use everywhere in Dear ImGui to render filled shapes.

// (This is used when io.MouseDrawCursor = true)

const int FONT_ATLAS_DEFAULT_TEX_DATA_W = 122; // Actual texture will be 2 times that + 1 spacing.

const int FONT_ATLAS_DEFAULT_TEX_DATA_H = 27;

static const char FONT_ATLAS_DEFAULT_TEX_DATA_PIXELS[FONT_ATLAS_DEFAULT_TEX_DATA_W * FONT_ATLAS_DEFAULT_TEX_DATA_H + 1] =

{

"..- -XXXXXXX- X - X -XXXXXXX - XXXXXXX- XX - XX XX "

"..- -X.....X- X.X - X.X -X.....X - X.....X- X..X -X..X X..X"

"--- -XXX.XXX- X...X - X...X -X....X - X....X- X..X -X...X X...X"

"X - X.X - X.....X - X.....X -X...X - X...X- X..X - X...X X...X "

"XX - X.X -X.......X- X.......X -X..X.X - X.X..X- X..X - X...X...X "

"X.X - X.X -XXXX.XXXX- XXXX.XXXX -X.X X.X - X.X X.X- X..XXX - X.....X "

"X..X - X.X - X.X - X.X -XX X.X - X.X XX- X..X..XXX - X...X "

"X...X - X.X - X.X - XX X.X XX - X.X - X.X - X..X..X..XX - X.X "

"X....X - X.X - X.X - X.X X.X X.X - X.X - X.X - X..X..X..X.X - X...X "

"X.....X - X.X - X.X - X..X X.X X..X - X.X - X.X -XXX X..X..X..X..X- X.....X "

"X......X - X.X - X.X - X...XXXXXX.XXXXXX...X - X.X XX-XX X.X -X..XX........X..X- X...X...X "

"X.......X - X.X - X.X -X.....................X- X.X X.X-X.X X.X -X...X...........X- X...X X...X "

"X........X - X.X - X.X - X...XXXXXX.XXXXXX...X - X.X..X-X..X.X - X..............X-X...X X...X"

"X.........X -XXX.XXX- X.X - X..X X.X X..X - X...X-X...X - X.............X-X..X X..X"

"X..........X-X.....X- X.X - X.X X.X X.X - X....X-X....X - X.............X- XX XX "

"X......XXXXX-XXXXXXX- X.X - XX X.X XX - X.....X-X.....X - X............X--------------"

"X...X..X --------- X.X - X.X - XXXXXXX-XXXXXXX - X...........X - "

"X..X X..X - -XXXX.XXXX- XXXX.XXXX ------------------------------------- X..........X - "

"X.X X..X - -X.......X- X.......X - XX XX - - X..........X - "

"XX X..X - - X.....X - X.....X - X.X X.X - - X........X - "

" X..X - - X...X - X...X - X..X X..X - - X........X - "

" XX - - X.X - X.X - X...XXXXXXXXXXXXX...X - - XXXXXXXXXX - "

"------------- - X - X -X.....................X- ------------------- "

" ----------------------------------- X...XXXXXXXXXXXXX...X - "

" - X..X X..X - "

" - X.X X.X - "

" - XX XX - "

};

static const ImVec2 FONT_ATLAS_DEFAULT_TEX_CURSOR_DATA[ImGuiMouseCursor_COUNT][3] =

{

// Pos ........ Size ......... Offset ......

{ ImVec2( 0,3), ImVec2(12,19), ImVec2( 0, 0) }, // ImGuiMouseCursor_Arrow

{ ImVec2(13,0), ImVec2( 7,16), ImVec2( 1, 8) }, // ImGuiMouseCursor_TextInput

{ ImVec2(31,0), ImVec2(23,23), ImVec2(11,11) }, // ImGuiMouseCursor_ResizeAll

{ ImVec2(21,0), ImVec2( 9,23), ImVec2( 4,11) }, // ImGuiMouseCursor_ResizeNS

{ ImVec2(55,18),ImVec2(23, 9), ImVec2(11, 4) }, // ImGuiMouseCursor_ResizeEW

{ ImVec2(73,0), ImVec2(17,17), ImVec2( 8, 8) }, // ImGuiMouseCursor_ResizeNESW

{ ImVec2(55,0), ImVec2(17,17), ImVec2( 8, 8) }, // ImGuiMouseCursor_ResizeNWSE

{ ImVec2(91,0), ImVec2(17,22), ImVec2( 5, 0) }, // ImGuiMouseCursor_Hand

{ ImVec2(0,3), ImVec2(12,19), ImVec2(0, 0) }, // ImGuiMouseCursor_Wait // Arrow + custom code in ImGui::RenderMouseCursor()

{ ImVec2(0,3), ImVec2(12,19), ImVec2(0, 0) }, // ImGuiMouseCursor_Progress // Arrow + custom code in ImGui::RenderMouseCursor()

{ ImVec2(109,0),ImVec2(13,15), ImVec2( 6, 7) }, // ImGuiMouseCursor_NotAllowed

};

ImFontAtlas::ImFontAtlas()

{

memset(this, 0, sizeof(*this));

TexGlyphPadding = 1;

PackIdMouseCursors = PackIdLines = -1;

}

ImFontAtlas::~ImFontAtlas()

{

IM_ASSERT(!Locked && "Cannot modify a locked ImFontAtlas between NewFrame() and EndFrame/Render()!");

Clear();

}

void ImFontAtlas::ClearInputData()

{

IM_ASSERT(!Locked && "Cannot modify a locked ImFontAtlas between NewFrame() and EndFrame/Render()!");

for (ImFontConfig& font_cfg : ConfigData)

if (font_cfg.FontData && font_cfg.FontDataOwnedByAtlas)

{

IM_FREE(font_cfg.FontData);

font_cfg.FontData = NULL;

}

// When clearing this we lose access to the font name and other information used to build the font.

for (ImFont* font : Fonts)

if (font->ConfigData >= ConfigData.Data && font->ConfigData < ConfigData.Data + ConfigData.Size)

{

font->ConfigData = NULL;

font->ConfigDataCount = 0;

}

ConfigData.clear();

CustomRects.clear();

PackIdMouseCursors = PackIdLines = -1;

// Important: we leave TexReady untouched

}

void ImFontAtlas::ClearTexData()

{

IM_ASSERT(!Locked && "Cannot modify a locked ImFontAtlas between NewFrame() and EndFrame/Render()!");

if (TexPixelsAlpha8)

IM_FREE(TexPixelsAlpha8);

if (TexPixelsRGBA32)

IM_FREE(TexPixelsRGBA32);

TexPixelsAlpha8 = NULL;

TexPixelsRGBA32 = NULL;

TexPixelsUseColors = false;

// Important: we leave TexReady untouched

}

void ImFontAtlas::ClearFonts()

{

IM_ASSERT(!Locked && "Cannot modify a locked ImFontAtlas between NewFrame() and EndFrame/Render()!");

ClearInputData();

Fonts.clear_delete();

TexReady = false;

}

void ImFontAtlas::Clear()

{

ClearInputData();

ClearTexData();

ClearFonts();

}

void ImFontAtlas::GetTexDataAsAlpha8(unsigned char** out_pixels, int* out_width, int* out_height, int* out_bytes_per_pixel)

{

// Build atlas on demand

if (TexPixelsAlpha8 == NULL)

Build();

*out_pixels = TexPixelsAlpha8;

if (out_width) *out_width = TexWidth;

if (out_height) *out_height = TexHeight;

if (out_bytes_per_pixel) *out_bytes_per_pixel = 1;

}

void ImFontAtlas::GetTexDataAsRGBA32(unsigned char** out_pixels, int* out_width, int* out_height, int* out_bytes_per_pixel)

{

// Convert to RGBA32 format on demand

// Although it is likely to be the most commonly used format, our font rendering is 1 channel / 8 bpp

if (!TexPixelsRGBA32)

{

unsigned char* pixels = NULL;

GetTexDataAsAlpha8(&pixels, NULL, NULL);

if (pixels)

{

TexPixelsRGBA32 = (unsigned int*)IM_ALLOC((size_t)TexWidth * (size_t)TexHeight * 4);

const unsigned char* src = pixels;

unsigned int* dst = TexPixelsRGBA32;

for (int n = TexWidth * TexHeight; n > 0; n--)

*dst++ = IM_COL32(255, 255, 255, (unsigned int)(*src++));

}

*out_pixels = (unsigned char*)TexPixelsRGBA32;

if (out_width) *out_width = TexWidth;

if (out_height) *out_height = TexHeight;

if (out_bytes_per_pixel) *out_bytes_per_pixel = 4;

}

ImFont* ImFontAtlas::AddFont(const ImFontConfig* font_cfg)

{

IM_ASSERT(!Locked && "Cannot modify a locked ImFontAtlas between NewFrame() and EndFrame/Render()!");

IM_ASSERT(font_cfg->FontData != NULL && font_cfg->FontDataSize > 0);

IM_ASSERT(font_cfg->SizePixels > 0.0f && "Is ImFontConfig struct correctly initialized?");

IM_ASSERT(font_cfg->RasterizerDensity > 0.0f && "Is ImFontConfig struct correctly initialized?");

// Create new font

if (!font_cfg->MergeMode)

Fonts.push_back(IM_NEW(ImFont));

else

IM_ASSERT(Fonts.Size > 0 && "Cannot use MergeMode for the first font"); // When using MergeMode make sure that a font has already been added before. You can use ImGui::GetIO().Fonts->AddFontDefault() to add the default imgui font.

ConfigData.push_back(*font_cfg);

ImFontConfig& new_font_cfg = ConfigData.back();

if (new_font_cfg.DstFont == NULL)

new_font_cfg.DstFont = Fonts.back();

if (!new_font_cfg.FontDataOwnedByAtlas)

{

new_font_cfg.FontData = IM_ALLOC(new_font_cfg.FontDataSize);

new_font_cfg.FontDataOwnedByAtlas = true;

memcpy(new_font_cfg.FontData, font_cfg->FontData, (size_t)new_font_cfg.FontDataSize);

}

// Round font size

// - We started rounding in 1.90 WIP (18991) as our layout system currently doesn't support non-rounded font size well yet.

// - Note that using io.FontGlobalScale or SetWindowFontScale(), with are legacy-ish, partially supported features, can still lead to unrounded sizes.

// - We may support it better later and remove this rounding.

new_font_cfg.SizePixels = ImTrunc(new_font_cfg.SizePixels);

// Pointers to ConfigData and BuilderData are otherwise dangling

ImFontAtlasUpdateConfigDataPointers(this);

// Invalidate texture

TexReady = false;

ClearTexData();

return new_font_cfg.DstFont;

}

// Default font TTF is compressed with stb_compress then base85 encoded (see misc/fonts/binary_to_compressed_c.cpp for encoder)

static unsigned int stb_decompress_length(const unsigned char* input);

static unsigned int stb_decompress(unsigned char* output, const unsigned char* input, unsigned int length);

static unsigned int Decode85Byte(char c) { return c >= '\\' ? c-36 : c-35; }

static void Decode85(const unsigned char* src, unsigned char* dst)

{

while (*src)

{

unsigned int tmp = Decode85Byte(src[0]) + 85 * (Decode85Byte(src[1]) + 85 * (Decode85Byte(src[2]) + 85 * (Decode85Byte(src[3]) + 85 * Decode85Byte(src[4]))));

dst[0] = ((tmp >> 0) & 0xFF); dst[1] = ((tmp >> 8) & 0xFF); dst[2] = ((tmp >> 16) & 0xFF); dst[3] = ((tmp >> 24) & 0xFF); // We can't assume little-endianness.

src += 5;

dst += 4;

}

#ifndef IMGUI_DISABLE_DEFAULT_FONT

static const char* GetDefaultCompressedFontDataTTF(int* out_size);

#endif

// Load embedded ProggyClean.ttf at size 13, disable oversampling

ImFont* ImFontAtlas::AddFontDefault(const ImFontConfig* font_cfg_template)

{

#ifndef IMGUI_DISABLE_DEFAULT_FONT

ImFontConfig font_cfg = font_cfg_template ? *font_cfg_template : ImFontConfig();

if (!font_cfg_template)

{

font_cfg.OversampleH = font_cfg.OversampleV = 1;

font_cfg.PixelSnapH = true;

}

if (font_cfg.SizePixels <= 0.0f)

font_cfg.SizePixels = 13.0f * 1.0f;

if (font_cfg.Name[0] == '\0')

ImFormatString(font_cfg.Name, IM_ARRAYSIZE(font_cfg.Name), "ProggyClean.ttf, %dpx", (int)font_cfg.SizePixels);

font_cfg.EllipsisChar = (ImWchar)0x0085;

font_cfg.GlyphOffset.y = 1.0f * IM_TRUNC(font_cfg.SizePixels / 13.0f); // Add +1 offset per 13 units

int ttf_compressed_size = 0;

const char* ttf_compressed = GetDefaultCompressedFontDataTTF(&ttf_compressed_size);

const ImWchar* glyph_ranges = font_cfg.GlyphRanges != NULL ? font_cfg.GlyphRanges : GetGlyphRangesDefault();

ImFont* font = AddFontFromMemoryCompressedTTF(ttf_compressed, ttf_compressed_size, font_cfg.SizePixels, &font_cfg, glyph_ranges);

return font;

#else

IM_ASSERT(0 && "AddFontDefault() disabled in this build.");

IM_UNUSED(font_cfg_template);

return NULL;

#endif // #ifndef IMGUI_DISABLE_DEFAULT_FONT

}

ImFont* ImFontAtlas::AddFontFromFileTTF(const char* filename, float size_pixels, const ImFontConfig* font_cfg_template, const ImWchar* glyph_ranges)

{

IM_ASSERT(!Locked && "Cannot modify a locked ImFontAtlas between NewFrame() and EndFrame/Render()!");

size_t data_size = 0;

void* data = ImFileLoadToMemory(filename, "rb", &data_size, 0);

if (!data)

{

IM_ASSERT_USER_ERROR(0, "Could not load font file!");

return NULL;

}

ImFontConfig font_cfg = font_cfg_template ? *font_cfg_template : ImFontConfig();

if (font_cfg.Name[0] == '\0')

{

// Store a short copy of filename into into the font name for convenience

const char* p;

for (p = filename + strlen(filename); p > filename && p[-1] != '/' && p[-1] != '\\'; p--) {}

ImFormatString(font_cfg.Name, IM_ARRAYSIZE(font_cfg.Name), "%s, %.0fpx", p, size_pixels);

}

return AddFontFromMemoryTTF(data, (int)data_size, size_pixels, &font_cfg, glyph_ranges);

}

// NB: Transfer ownership of 'ttf_data' to ImFontAtlas, unless font_cfg_template->FontDataOwnedByAtlas == false. Owned TTF buffer will be deleted after Build().

ImFont* ImFontAtlas::AddFontFromMemoryTTF(void* font_data, int font_data_size, float size_pixels, const ImFontConfig* font_cfg_template, const ImWchar* glyph_ranges)

{

IM_ASSERT(!Locked && "Cannot modify a locked ImFontAtlas between NewFrame() and EndFrame/Render()!");

ImFontConfig font_cfg = font_cfg_template ? *font_cfg_template : ImFontConfig();

IM_ASSERT(font_cfg.FontData == NULL);

IM_ASSERT(font_data_size > 100 && "Incorrect value for font_data_size!"); // Heuristic to prevent accidentally passing a wrong value to font_data_size.

font_cfg.FontData = font_data;

font_cfg.FontDataSize = font_data_size;

font_cfg.SizePixels = size_pixels > 0.0f ? size_pixels : font_cfg.SizePixels;

if (glyph_ranges)

font_cfg.GlyphRanges = glyph_ranges;

return AddFont(&font_cfg);

}

ImFont* ImFontAtlas::AddFontFromMemoryCompressedTTF(const void* compressed_ttf_data, int compressed_ttf_size, float size_pixels, const ImFontConfig* font_cfg_template, const ImWchar* glyph_ranges)

{

const unsigned int buf_decompressed_size = stb_decompress_length((const unsigned char*)compressed_ttf_data);

unsigned char* buf_decompressed_data = (unsigned char*)IM_ALLOC(buf_decompressed_size);

stb_decompress(buf_decompressed_data, (const unsigned char*)compressed_ttf_data, (unsigned int)compressed_ttf_size);

ImFontConfig font_cfg = font_cfg_template ? *font_cfg_template : ImFontConfig();

IM_ASSERT(font_cfg.FontData == NULL);

font_cfg.FontDataOwnedByAtlas = true;

return AddFontFromMemoryTTF(buf_decompressed_data, (int)buf_decompressed_size, size_pixels, &font_cfg, glyph_ranges);

}

ImFont* ImFontAtlas::AddFontFromMemoryCompressedBase85TTF(const char* compressed_ttf_data_base85, float size_pixels, const ImFontConfig* font_cfg, const ImWchar* glyph_ranges)

{

int compressed_ttf_size = (((int)strlen(compressed_ttf_data_base85) + 4) / 5) * 4;

void* compressed_ttf = IM_ALLOC((size_t)compressed_ttf_size);

Decode85((const unsigned char*)compressed_ttf_data_base85, (unsigned char*)compressed_ttf);

ImFont* font = AddFontFromMemoryCompressedTTF(compressed_ttf, compressed_ttf_size, size_pixels, font_cfg, glyph_ranges);

IM_FREE(compressed_ttf);

return font;

}

int ImFontAtlas::AddCustomRectRegular(int width, int height)

{

IM_ASSERT(width > 0 && width <= 0xFFFF);

IM_ASSERT(height > 0 && height <= 0xFFFF);

ImFontAtlasCustomRect r;

r.Width = (unsigned short)width;

r.Height = (unsigned short)height;

CustomRects.push_back(r);

return CustomRects.Size - 1; // Return index

}

int ImFontAtlas::AddCustomRectFontGlyph(ImFont* font, ImWchar id, int width, int height, float advance_x, const ImVec2& offset)

{

#ifdef IMGUI_USE_WCHAR32

IM_ASSERT(id <= IM_UNICODE_CODEPOINT_MAX);

#endif

IM_ASSERT(font != NULL);

IM_ASSERT(width > 0 && width <= 0xFFFF);

IM_ASSERT(height > 0 && height <= 0xFFFF);

ImFontAtlasCustomRect r;

r.Width = (unsigned short)width;

r.Height = (unsigned short)height;

r.GlyphID = id;

r.GlyphColored = 0; // Set to 1 manually to mark glyph as colored // FIXME: No official API for that (#8133)

r.GlyphAdvanceX = advance_x;

r.GlyphOffset = offset;

r.Font = font;

CustomRects.push_back(r);

return CustomRects.Size - 1; // Return index

}

void ImFontAtlas::CalcCustomRectUV(const ImFontAtlasCustomRect* rect, ImVec2* out_uv_min, ImVec2* out_uv_max) const

{

IM_ASSERT(TexWidth > 0 && TexHeight > 0); // Font atlas needs to be built before we can calculate UV coordinates

IM_ASSERT(rect->IsPacked()); // Make sure the rectangle has been packed

*out_uv_min = ImVec2((float)rect->X * TexUvScale.x, (float)rect->Y * TexUvScale.y);

*out_uv_max = ImVec2((float)(rect->X + rect->Width) * TexUvScale.x, (float)(rect->Y + rect->Height) * TexUvScale.y);

}

bool ImFontAtlasGetMouseCursorTexData(ImFontAtlas* atlas, ImGuiMouseCursor cursor_type, ImVec2* out_offset, ImVec2* out_size, ImVec2 out_uv_border[2], ImVec2 out_uv_fill[2])

{

if (cursor_type <= ImGuiMouseCursor_None || cursor_type >= ImGuiMouseCursor_COUNT)

return false;

if (atlas->Flags & ImFontAtlasFlags_NoMouseCursors)

return false;

IM_ASSERT(atlas->PackIdMouseCursors != -1);

ImFontAtlasCustomRect* r = atlas->GetCustomRectByIndex(atlas->PackIdMouseCursors);

ImVec2 pos = FONT_ATLAS_DEFAULT_TEX_CURSOR_DATA[cursor_type][0] + ImVec2((float)r->X, (float)r->Y);

ImVec2 size = FONT_ATLAS_DEFAULT_TEX_CURSOR_DATA[cursor_type][1];

*out_size = size;

*out_offset = FONT_ATLAS_DEFAULT_TEX_CURSOR_DATA[cursor_type][2];

out_uv_border[0] = (pos) * atlas->TexUvScale;

out_uv_border[1] = (pos + size) * atlas->TexUvScale;

pos.x += FONT_ATLAS_DEFAULT_TEX_DATA_W + 1;

out_uv_fill[0] = (pos) * atlas->TexUvScale;

out_uv_fill[1] = (pos + size) * atlas->TexUvScale;

return true;

}

bool ImFontAtlas::Build()

{

IM_ASSERT(!Locked && "Cannot modify a locked ImFontAtlas between NewFrame() and EndFrame/Render()!");

// Default font is none are specified

if (ConfigData.Size == 0)

AddFontDefault();

// Select builder

// - Note that we do not reassign to atlas->FontBuilderIO, since it is likely to point to static data which

// may mess with some hot-reloading schemes. If you need to assign to this (for dynamic selection) AND are

// using a hot-reloading scheme that messes up static data, store your own instance of ImFontBuilderIO somewhere

// and point to it instead of pointing directly to return value of the GetBuilderXXX functions.

const ImFontBuilderIO* builder_io = FontBuilderIO;

if (builder_io == NULL)

{

#ifdef IMGUI_ENABLE_FREETYPE

builder_io = ImGuiFreeType::GetBuilderForFreeType();

#elif defined(IMGUI_ENABLE_STB_TRUETYPE)

builder_io = ImFontAtlasGetBuilderForStbTruetype();

#else

IM_ASSERT(0); // Invalid Build function

#endif

}

// Build

return builder_io->FontBuilder_Build(this);

}

void ImFontAtlasBuildMultiplyCalcLookupTable(unsigned char out_table[256], float in_brighten_factor)

{

for (unsigned int i = 0; i < 256; i++)

{

unsigned int value = (unsigned int)(i * in_brighten_factor);

out_table[i] = value > 255 ? 255 : (value & 0xFF);

}

void ImFontAtlasBuildMultiplyRectAlpha8(const unsigned char table[256], unsigned char* pixels, int x, int y, int w, int h, int stride)

{

IM_ASSERT_PARANOID(w <= stride);

unsigned char* data = pixels + x + y * stride;

for (int j = h; j > 0; j--, data += stride - w)

for (int i = w; i > 0; i--, data++)

*data = table[*data];

}

void ImFontAtlasBuildGetOversampleFactors(const ImFontConfig* cfg, int* out_oversample_h, int* out_oversample_v)

{

// Automatically disable horizontal oversampling over size 36

*out_oversample_h = (cfg->OversampleH != 0) ? cfg->OversampleH : (cfg->SizePixels * cfg->RasterizerDensity > 36.0f || cfg->PixelSnapH) ? 1 : 2;

*out_oversample_v = (cfg->OversampleV != 0) ? cfg->OversampleV : 1;

}

#ifdef IMGUI_ENABLE_STB_TRUETYPE

// Temporary data for one source font (multiple source fonts can be merged into one destination ImFont)

// (C++03 doesn't allow instancing ImVector<> with function-local types so we declare the type here.)

struct ImFontBuildSrcData

{

stbtt_fontinfo FontInfo;

stbtt_pack_range PackRange; // Hold the list of codepoints to pack (essentially points to Codepoints.Data)

stbrp_rect* Rects; // Rectangle to pack. We first fill in their size and the packer will give us their position.

stbtt_packedchar* PackedChars; // Output glyphs

const ImWchar* SrcRanges; // Ranges as requested by user (user is allowed to request too much, e.g. 0x0020..0xFFFF)

int DstIndex; // Index into atlas->Fonts[] and dst_tmp_array[]

int GlyphsHighest; // Highest requested codepoint

int GlyphsCount; // Glyph count (excluding missing glyphs and glyphs already set by an earlier source font)

ImBitVector GlyphsSet; // Glyph bit map (random access, 1-bit per codepoint. This will be a maximum of 8KB)

ImVector<int> GlyphsList; // Glyph codepoints list (flattened version of GlyphsSet)

};

// Temporary data for one destination ImFont* (multiple source fonts can be merged into one destination ImFont)

struct ImFontBuildDstData

{

int SrcCount; // Number of source fonts targeting this destination font.

int GlyphsHighest;

int GlyphsCount;

ImBitVector GlyphsSet; // This is used to resolve collision when multiple sources are merged into a same destination font.

};

static void UnpackBitVectorToFlatIndexList(const ImBitVector* in, ImVector<int>* out)

{

IM_ASSERT(sizeof(in->Storage.Data[0]) == sizeof(int));

const ImU32* it_begin = in->Storage.begin();

const ImU32* it_end = in->Storage.end();

for (const ImU32* it = it_begin; it < it_end; it++)

if (ImU32 entries_32 = *it)

for (ImU32 bit_n = 0; bit_n < 32; bit_n++)

if (entries_32 & ((ImU32)1 << bit_n))

out->push_back((int)(((it - it_begin) << 5) + bit_n));

}

static bool ImFontAtlasBuildWithStbTruetype(ImFontAtlas* atlas)

{

IM_ASSERT(atlas->ConfigData.Size > 0);

ImFontAtlasBuildInit(atlas);

// Clear atlas

atlas->TexID = (ImTextureID)NULL;

atlas->TexWidth = atlas->TexHeight = 0;

atlas->TexUvScale = ImVec2(0.0f, 0.0f);

atlas->TexUvWhitePixel = ImVec2(0.0f, 0.0f);

atlas->ClearTexData();

// Temporary storage for building

ImVector<ImFontBuildSrcData> src_tmp_array;

ImVector<ImFontBuildDstData> dst_tmp_array;

src_tmp_array.resize(atlas->ConfigData.Size);

dst_tmp_array.resize(atlas->Fonts.Size);

memset(src_tmp_array.Data, 0, (size_t)src_tmp_array.size_in_bytes());

memset(dst_tmp_array.Data, 0, (size_t)dst_tmp_array.size_in_bytes());

// 1. Initialize font loading structure, check font data validity

for (int src_i = 0; src_i < atlas->ConfigData.Size; src_i++)

{

ImFontBuildSrcData& src_tmp = src_tmp_array[src_i];

ImFontConfig& cfg = atlas->ConfigData[src_i];

IM_ASSERT(cfg.DstFont && (!cfg.DstFont->IsLoaded() || cfg.DstFont->ContainerAtlas == atlas));

// Find index from cfg.DstFont (we allow the user to set cfg.DstFont. Also it makes casual debugging nicer than when storing indices)

src_tmp.DstIndex = -1;

for (int output_i = 0; output_i < atlas->Fonts.Size && src_tmp.DstIndex == -1; output_i++)

if (cfg.DstFont == atlas->Fonts[output_i])

src_tmp.DstIndex = output_i;

if (src_tmp.DstIndex == -1)

{

IM_ASSERT(src_tmp.DstIndex != -1); // cfg.DstFont not pointing within atlas->Fonts[] array?

return false;

}

// Initialize helper structure for font loading and verify that the TTF/OTF data is correct

const int font_offset = stbtt_GetFontOffsetForIndex((unsigned char*)cfg.FontData, cfg.FontNo);

IM_ASSERT(font_offset >= 0 && "FontData is incorrect, or FontNo cannot be found.");

if (!stbtt_InitFont(&src_tmp.FontInfo, (unsigned char*)cfg.FontData, font_offset))

{

IM_ASSERT(0 && "stbtt_InitFont(): failed to parse FontData. It is correct and complete? Check FontDataSize.");

return false;

}

// Measure highest codepoints

ImFontBuildDstData& dst_tmp = dst_tmp_array[src_tmp.DstIndex];

src_tmp.SrcRanges = cfg.GlyphRanges ? cfg.GlyphRanges : atlas->GetGlyphRangesDefault();

for (const ImWchar* src_range = src_tmp.SrcRanges; src_range[0] && src_range[1]; src_range += 2)

{

// Check for valid range. This may also help detect *some* dangling pointers, because a common

// user error is to setup ImFontConfig::GlyphRanges with a pointer to data that isn't persistent,

// or to forget to zero-terminate the glyph range array.

IM_ASSERT(src_range[0] <= src_range[1] && "Invalid range: is your glyph range array persistent? it is zero-terminated?");

src_tmp.GlyphsHighest = ImMax(src_tmp.GlyphsHighest, (int)src_range[1]);

}

dst_tmp.SrcCount++;

dst_tmp.GlyphsHighest = ImMax(dst_tmp.GlyphsHighest, src_tmp.GlyphsHighest);

}

// 2. For every requested codepoint, check for their presence in the font data, and handle redundancy or overlaps between source fonts to avoid unused glyphs.

int total_glyphs_count = 0;

for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)

{

ImFontBuildSrcData& src_tmp = src_tmp_array[src_i];

ImFontBuildDstData& dst_tmp = dst_tmp_array[src_tmp.DstIndex];

src_tmp.GlyphsSet.Create(src_tmp.GlyphsHighest + 1);

if (dst_tmp.GlyphsSet.Storage.empty())

dst_tmp.GlyphsSet.Create(dst_tmp.GlyphsHighest + 1);

for (const ImWchar* src_range = src_tmp.SrcRanges; src_range[0] && src_range[1]; src_range += 2)

for (unsigned int codepoint = src_range[0]; codepoint <= src_range[1]; codepoint++)

{

if (dst_tmp.GlyphsSet.TestBit(codepoint)) // Don't overwrite existing glyphs. We could make this an option for MergeMode (e.g. MergeOverwrite==true)

continue;

if (!stbtt_FindGlyphIndex(&src_tmp.FontInfo, codepoint)) // It is actually in the font?

continue;

// Add to avail set/counters

src_tmp.GlyphsCount++;

dst_tmp.GlyphsCount++;

src_tmp.GlyphsSet.SetBit(codepoint);

dst_tmp.GlyphsSet.SetBit(codepoint);

total_glyphs_count++;

}

// 3. Unpack our bit map into a flat list (we now have all the Unicode points that we know are requested _and_ available _and_ not overlapping another)

for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)

{

ImFontBuildSrcData& src_tmp = src_tmp_array[src_i];

src_tmp.GlyphsList.reserve(src_tmp.GlyphsCount);

UnpackBitVectorToFlatIndexList(&src_tmp.GlyphsSet, &src_tmp.GlyphsList);

src_tmp.GlyphsSet.Clear();

IM_ASSERT(src_tmp.GlyphsList.Size == src_tmp.GlyphsCount);

}

for (int dst_i = 0; dst_i < dst_tmp_array.Size; dst_i++)

dst_tmp_array[dst_i].GlyphsSet.Clear();

dst_tmp_array.clear();

// Allocate packing character data and flag packed characters buffer as non-packed (x0=y0=x1=y1=0)

// (We technically don't need to zero-clear buf_rects, but let's do it for the sake of sanity)

ImVector<stbrp_rect> buf_rects;

ImVector<stbtt_packedchar> buf_packedchars;

buf_rects.resize(total_glyphs_count);

buf_packedchars.resize(total_glyphs_count);

memset(buf_rects.Data, 0, (size_t)buf_rects.size_in_bytes());

memset(buf_packedchars.Data, 0, (size_t)buf_packedchars.size_in_bytes());

// 4. Gather glyphs sizes so we can pack them in our virtual canvas.

int total_surface = 0;

int buf_rects_out_n = 0;

int buf_packedchars_out_n = 0;

const int pack_padding = atlas->TexGlyphPadding;

for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)

{

ImFontBuildSrcData& src_tmp = src_tmp_array[src_i];

if (src_tmp.GlyphsCount == 0)

continue;

src_tmp.Rects = &buf_rects[buf_rects_out_n];

src_tmp.PackedChars = &buf_packedchars[buf_packedchars_out_n];

buf_rects_out_n += src_tmp.GlyphsCount;

buf_packedchars_out_n += src_tmp.GlyphsCount;

// Automatic selection of oversampling parameters

ImFontConfig& cfg = atlas->ConfigData[src_i];

int oversample_h, oversample_v;

ImFontAtlasBuildGetOversampleFactors(&cfg, &oversample_h, &oversample_v);

// Convert our ranges in the format stb_truetype wants

src_tmp.PackRange.font_size = cfg.SizePixels * cfg.RasterizerDensity;

src_tmp.PackRange.first_unicode_codepoint_in_range = 0;

src_tmp.PackRange.array_of_unicode_codepoints = src_tmp.GlyphsList.Data;

src_tmp.PackRange.num_chars = src_tmp.GlyphsList.Size;

src_tmp.PackRange.chardata_for_range = src_tmp.PackedChars;

src_tmp.PackRange.h_oversample = (unsigned char)oversample_h;

src_tmp.PackRange.v_oversample = (unsigned char)oversample_v;

// Gather the sizes of all rectangles we will need to pack (this loop is based on stbtt_PackFontRangesGatherRects)

const float scale = (cfg.SizePixels > 0.0f) ? stbtt_ScaleForPixelHeight(&src_tmp.FontInfo, cfg.SizePixels * cfg.RasterizerDensity) : stbtt_ScaleForMappingEmToPixels(&src_tmp.FontInfo, -cfg.SizePixels * cfg.RasterizerDensity);

for (int glyph_i = 0; glyph_i < src_tmp.GlyphsList.Size; glyph_i++)

{

int x0, y0, x1, y1;

const int glyph_index_in_font = stbtt_FindGlyphIndex(&src_tmp.FontInfo, src_tmp.GlyphsList[glyph_i]);

IM_ASSERT(glyph_index_in_font != 0);

stbtt_GetGlyphBitmapBoxSubpixel(&src_tmp.FontInfo, glyph_index_in_font, scale * oversample_h, scale * oversample_v, 0, 0, &x0, &y0, &x1, &y1);

src_tmp.Rects[glyph_i].w = (stbrp_coord)(x1 - x0 + pack_padding + oversample_h - 1);

src_tmp.Rects[glyph_i].h = (stbrp_coord)(y1 - y0 + pack_padding + oversample_v - 1);

total_surface += src_tmp.Rects[glyph_i].w * src_tmp.Rects[glyph_i].h;

}

for (int i = 0; i < atlas->CustomRects.Size; i++)

total_surface += (atlas->CustomRects[i].Width + pack_padding) * (atlas->CustomRects[i].Height + pack_padding);

// We need a width for the skyline algorithm, any width!

// The exact width doesn't really matter much, but some API/GPU have texture size limitations and increasing width can decrease height.

// User can override TexDesiredWidth and TexGlyphPadding if they wish, otherwise we use a simple heuristic to select the width based on expected surface.

const int surface_sqrt = (int)ImSqrt((float)total_surface) + 1;

atlas->TexHeight = 0;

if (atlas->TexDesiredWidth > 0)

atlas->TexWidth = atlas->TexDesiredWidth;

else

atlas->TexWidth = (surface_sqrt >= 4096 * 0.7f) ? 4096 : (surface_sqrt >= 2048 * 0.7f) ? 2048 : (surface_sqrt >= 1024 * 0.7f) ? 1024 : 512;

// 5. Start packing

// Pack our extra data rectangles first, so it will be on the upper-left corner of our texture (UV will have small values).

const int TEX_HEIGHT_MAX = 1024 * 32;

stbtt_pack_context spc = {};

stbtt_PackBegin(&spc, NULL, atlas->TexWidth, TEX_HEIGHT_MAX, 0, 0, NULL);

spc.padding = atlas->TexGlyphPadding; // Because we mixup stbtt_PackXXX and stbrp_PackXXX there's a bit of a hack here, not passing the value to stbtt_PackBegin() allows us to still pack a TexWidth-1 wide item. (#8107)

ImFontAtlasBuildPackCustomRects(atlas, spc.pack_info);

// 6. Pack each source font. No rendering yet, we are working with rectangles in an infinitely tall texture at this point.

for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)

{

ImFontBuildSrcData& src_tmp = src_tmp_array[src_i];

if (src_tmp.GlyphsCount == 0)

continue;

stbrp_pack_rects((stbrp_context*)spc.pack_info, src_tmp.Rects, src_tmp.GlyphsCount);

// Extend texture height and mark missing glyphs as non-packed so we won't render them.

// FIXME: We are not handling packing failure here (would happen if we got off TEX_HEIGHT_MAX or if a single if larger than TexWidth?)

for (int glyph_i = 0; glyph_i < src_tmp.GlyphsCount; glyph_i++)

if (src_tmp.Rects[glyph_i].was_packed)

atlas->TexHeight = ImMax(atlas->TexHeight, src_tmp.Rects[glyph_i].y + src_tmp.Rects[glyph_i].h);

}

// 7. Allocate texture

atlas->TexHeight = (atlas->Flags & ImFontAtlasFlags_NoPowerOfTwoHeight) ? (atlas->TexHeight + 1) : ImUpperPowerOfTwo(atlas->TexHeight);

atlas->TexUvScale = ImVec2(1.0f / atlas->TexWidth, 1.0f / atlas->TexHeight);

atlas->TexPixelsAlpha8 = (unsigned char*)IM_ALLOC(atlas->TexWidth * atlas->TexHeight);

memset(atlas->TexPixelsAlpha8, 0, atlas->TexWidth * atlas->TexHeight);

spc.pixels = atlas->TexPixelsAlpha8;

spc.height = atlas->TexHeight;

// 8. Render/rasterize font characters into the texture

for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)

{

ImFontConfig& cfg = atlas->ConfigData[src_i];

ImFontBuildSrcData& src_tmp = src_tmp_array[src_i];

if (src_tmp.GlyphsCount == 0)

continue;

stbtt_PackFontRangesRenderIntoRects(&spc, &src_tmp.FontInfo, &src_tmp.PackRange, 1, src_tmp.Rects);

// Apply multiply operator

if (cfg.RasterizerMultiply != 1.0f)

{

unsigned char multiply_table[256];

ImFontAtlasBuildMultiplyCalcLookupTable(multiply_table, cfg.RasterizerMultiply);

stbrp_rect* r = &src_tmp.Rects[0];

for (int glyph_i = 0; glyph_i < src_tmp.GlyphsCount; glyph_i++, r++)

if (r->was_packed)

ImFontAtlasBuildMultiplyRectAlpha8(multiply_table, atlas->TexPixelsAlpha8, r->x, r->y, r->w, r->h, atlas->TexWidth * 1);

}

src_tmp.Rects = NULL;

}

// End packing

stbtt_PackEnd(&spc);

buf_rects.clear();

// 9. Setup ImFont and glyphs for runtime

for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)

{

// When merging fonts with MergeMode=true:

// - We can have multiple input fonts writing into a same destination font.

// - dst_font->ConfigData is != from cfg which is our source configuration.

ImFontBuildSrcData& src_tmp = src_tmp_array[src_i];

ImFontConfig& cfg = atlas->ConfigData[src_i];

ImFont* dst_font = cfg.DstFont;

const float font_scale = stbtt_ScaleForPixelHeight(&src_tmp.FontInfo, cfg.SizePixels);

int unscaled_ascent, unscaled_descent, unscaled_line_gap;

stbtt_GetFontVMetrics(&src_tmp.FontInfo, &unscaled_ascent, &unscaled_descent, &unscaled_line_gap);

const float ascent = ImCeil(unscaled_ascent * font_scale);

const float descent = ImFloor(unscaled_descent * font_scale);

ImFontAtlasBuildSetupFont(atlas, dst_font, &cfg, ascent, descent);

const float font_off_x = cfg.GlyphOffset.x;

const float font_off_y = cfg.GlyphOffset.y + IM_ROUND(dst_font->Ascent);

const float inv_rasterization_scale = 1.0f / cfg.RasterizerDensity;

for (int glyph_i = 0; glyph_i < src_tmp.GlyphsCount; glyph_i++)

{

// Register glyph

const int codepoint = src_tmp.GlyphsList[glyph_i];

const stbtt_packedchar& pc = src_tmp.PackedChars[glyph_i];

stbtt_aligned_quad q;

float unused_x = 0.0f, unused_y = 0.0f;

stbtt_GetPackedQuad(src_tmp.PackedChars, atlas->TexWidth, atlas->TexHeight, glyph_i, &unused_x, &unused_y, &q, 0);

float x0 = q.x0 * inv_rasterization_scale + font_off_x;

float y0 = q.y0 * inv_rasterization_scale + font_off_y;

float x1 = q.x1 * inv_rasterization_scale + font_off_x;

float y1 = q.y1 * inv_rasterization_scale + font_off_y;

dst_font->AddGlyph(&cfg, (ImWchar)codepoint, x0, y0, x1, y1, q.s0, q.t0, q.s1, q.t1, pc.xadvance * inv_rasterization_scale);

}

// Cleanup

src_tmp_array.clear_destruct();

ImFontAtlasBuildFinish(atlas);

return true;

}

const ImFontBuilderIO* ImFontAtlasGetBuilderForStbTruetype()

{

static ImFontBuilderIO io;

io.FontBuilder_Build = ImFontAtlasBuildWithStbTruetype;

return &io;

}

#endif // IMGUI_ENABLE_STB_TRUETYPE

void ImFontAtlasUpdateConfigDataPointers(ImFontAtlas* atlas)

{

for (ImFontConfig& font_cfg : atlas->ConfigData)

{

ImFont* font = font_cfg.DstFont;

if (!font_cfg.MergeMode)

{

font->ConfigData = &font_cfg;

font->ConfigDataCount = 0;

}

font->ConfigDataCount++;

}

void ImFontAtlasBuildSetupFont(ImFontAtlas* atlas, ImFont* font, ImFontConfig* font_config, float ascent, float descent)

{

if (!font_config->MergeMode)

{

font->ClearOutputData();

font->FontSize = font_config->SizePixels;

IM_ASSERT(font->ConfigData == font_config);

font->ContainerAtlas = atlas;

font->Ascent = ascent;

font->Descent = descent;

}

void ImFontAtlasBuildPackCustomRects(ImFontAtlas* atlas, void* stbrp_context_opaque)

{

stbrp_context* pack_context = (stbrp_context*)stbrp_context_opaque;

IM_ASSERT(pack_context != NULL);

ImVector<ImFontAtlasCustomRect>& user_rects = atlas->CustomRects;

IM_ASSERT(user_rects.Size >= 1); // We expect at least the default custom rects to be registered, else something went wrong.

#ifdef __GNUC__

if (user_rects.Size < 1) { __builtin_unreachable(); } // Workaround for GCC bug if IM_ASSERT() is defined to conditionally throw (see #5343)

#endif

const int pack_padding = atlas->TexGlyphPadding;

ImVector<stbrp_rect> pack_rects;

pack_rects.resize(user_rects.Size);

memset(pack_rects.Data, 0, (size_t)pack_rects.size_in_bytes());

for (int i = 0; i < user_rects.Size; i++)

{

pack_rects[i].w = user_rects[i].Width + pack_padding;

pack_rects[i].h = user_rects[i].Height + pack_padding;

}

stbrp_pack_rects(pack_context, &pack_rects[0], pack_rects.Size);

for (int i = 0; i < pack_rects.Size; i++)

if (pack_rects[i].was_packed)

{

user_rects[i].X = (unsigned short)pack_rects[i].x;

user_rects[i].Y = (unsigned short)pack_rects[i].y;

IM_ASSERT(pack_rects[i].w == user_rects[i].Width + pack_padding && pack_rects[i].h == user_rects[i].Height + pack_padding);

atlas->TexHeight = ImMax(atlas->TexHeight, pack_rects[i].y + pack_rects[i].h);

}

void ImFontAtlasBuildRender8bppRectFromString(ImFontAtlas* atlas, int x, int y, int w, int h, const char* in_str, char in_marker_char, unsigned char in_marker_pixel_value)

{

IM_ASSERT(x >= 0 && x + w <= atlas->TexWidth);

IM_ASSERT(y >= 0 && y + h <= atlas->TexHeight);

unsigned char* out_pixel = atlas->TexPixelsAlpha8 + x + (y * atlas->TexWidth);

for (int off_y = 0; off_y < h; off_y++, out_pixel += atlas->TexWidth, in_str += w)

for (int off_x = 0; off_x < w; off_x++)

out_pixel[off_x] = (in_str[off_x] == in_marker_char) ? in_marker_pixel_value : 0x00;

}

void ImFontAtlasBuildRender32bppRectFromString(ImFontAtlas* atlas, int x, int y, int w, int h, const char* in_str, char in_marker_char, unsigned int in_marker_pixel_value)

{

IM_ASSERT(x >= 0 && x + w <= atlas->TexWidth);

IM_ASSERT(y >= 0 && y + h <= atlas->TexHeight);

unsigned int* out_pixel = atlas->TexPixelsRGBA32 + x + (y * atlas->TexWidth);

for (int off_y = 0; off_y < h; off_y++, out_pixel += atlas->TexWidth, in_str += w)

for (int off_x = 0; off_x < w; off_x++)

out_pixel[off_x] = (in_str[off_x] == in_marker_char) ? in_marker_pixel_value : IM_COL32_BLACK_TRANS;

}

static void ImFontAtlasBuildRenderDefaultTexData(ImFontAtlas* atlas)

{

ImFontAtlasCustomRect* r = atlas->GetCustomRectByIndex(atlas->PackIdMouseCursors);

IM_ASSERT(r->IsPacked());

const int w = atlas->TexWidth;

if (atlas->Flags & ImFontAtlasFlags_NoMouseCursors)

{

// White pixels only

IM_ASSERT(r->Width == 2 && r->Height == 2);

const int offset = (int)r->X + (int)r->Y * w;

if (atlas->TexPixelsAlpha8 != NULL)

{

atlas->TexPixelsAlpha8[offset] = atlas->TexPixelsAlpha8[offset + 1] = atlas->TexPixelsAlpha8[offset + w] = atlas->TexPixelsAlpha8[offset + w + 1] = 0xFF;

}

else

{

atlas->TexPixelsRGBA32[offset] = atlas->TexPixelsRGBA32[offset + 1] = atlas->TexPixelsRGBA32[offset + w] = atlas->TexPixelsRGBA32[offset + w + 1] = IM_COL32_WHITE;

}

else

{

// White pixels and mouse cursor

IM_ASSERT(r->Width == FONT_ATLAS_DEFAULT_TEX_DATA_W * 2 + 1 && r->Height == FONT_ATLAS_DEFAULT_TEX_DATA_H);

const int x_for_white = r->X;

const int x_for_black = r->X + FONT_ATLAS_DEFAULT_TEX_DATA_W + 1;

if (atlas->TexPixelsAlpha8 != NULL)

{

ImFontAtlasBuildRender8bppRectFromString(atlas, x_for_white, r->Y, FONT_ATLAS_DEFAULT_TEX_DATA_W, FONT_ATLAS_DEFAULT_TEX_DATA_H, FONT_ATLAS_DEFAULT_TEX_DATA_PIXELS, '.', 0xFF);

ImFontAtlasBuildRender8bppRectFromString(atlas, x_for_black, r->Y, FONT_ATLAS_DEFAULT_TEX_DATA_W, FONT_ATLAS_DEFAULT_TEX_DATA_H, FONT_ATLAS_DEFAULT_TEX_DATA_PIXELS, 'X', 0xFF);

}

else

{

ImFontAtlasBuildRender32bppRectFromString(atlas, x_for_white, r->Y, FONT_ATLAS_DEFAULT_TEX_DATA_W, FONT_ATLAS_DEFAULT_TEX_DATA_H, FONT_ATLAS_DEFAULT_TEX_DATA_PIXELS, '.', IM_COL32_WHITE);

ImFontAtlasBuildRender32bppRectFromString(atlas, x_for_black, r->Y, FONT_ATLAS_DEFAULT_TEX_DATA_W, FONT_ATLAS_DEFAULT_TEX_DATA_H, FONT_ATLAS_DEFAULT_TEX_DATA_PIXELS, 'X', IM_COL32_WHITE);

}

atlas->TexUvWhitePixel = ImVec2((r->X + 0.5f) * atlas->TexUvScale.x, (r->Y + 0.5f) * atlas->TexUvScale.y);

}

static void ImFontAtlasBuildRenderLinesTexData(ImFontAtlas* atlas)

{

if (atlas->Flags & ImFontAtlasFlags_NoBakedLines)

return;

// This generates a triangular shape in the texture, with the various line widths stacked on top of each other to allow interpolation between them

ImFontAtlasCustomRect* r = atlas->GetCustomRectByIndex(atlas->PackIdLines);

IM_ASSERT(r->IsPacked());

for (int n = 0; n < IM_DRAWLIST_TEX_LINES_WIDTH_MAX + 1; n++) // +1 because of the zero-width row

{

// Each line consists of at least two empty pixels at the ends, with a line of solid pixels in the middle

int y = n;

int line_width = n;

int pad_left = (r->Width - line_width) / 2;

int pad_right = r->Width - (pad_left + line_width);

// Write each slice

IM_ASSERT(pad_left + line_width + pad_right == r->Width && y < r->Height); // Make sure we're inside the texture bounds before we start writing pixels

if (atlas->TexPixelsAlpha8 != NULL)

{

unsigned char* write_ptr = &atlas->TexPixelsAlpha8[r->X + ((r->Y + y) * atlas->TexWidth)];

for (int i = 0; i < pad_left; i++)

*(write_ptr + i) = 0x00;

for (int i = 0; i < line_width; i++)

*(write_ptr + pad_left + i) = 0xFF;

for (int i = 0; i < pad_right; i++)

*(write_ptr + pad_left + line_width + i) = 0x00;

}

else

{

unsigned int* write_ptr = &atlas->TexPixelsRGBA32[r->X + ((r->Y + y) * atlas->TexWidth)];

for (int i = 0; i < pad_left; i++)

*(write_ptr + i) = IM_COL32(255, 255, 255, 0);

for (int i = 0; i < line_width; i++)

*(write_ptr + pad_left + i) = IM_COL32_WHITE;

for (int i = 0; i < pad_right; i++)

*(write_ptr + pad_left + line_width + i) = IM_COL32(255, 255, 255, 0);

}

// Calculate UVs for this line

ImVec2 uv0 = ImVec2((float)(r->X + pad_left - 1), (float)(r->Y + y)) * atlas->TexUvScale;

ImVec2 uv1 = ImVec2((float)(r->X + pad_left + line_width + 1), (float)(r->Y + y + 1)) * atlas->TexUvScale;

float half_v = (uv0.y + uv1.y) * 0.5f; // Calculate a constant V in the middle of the row to avoid sampling artifacts

atlas->TexUvLines[n] = ImVec4(uv0.x, half_v, uv1.x, half_v);

}

// Note: this is called / shared by both the stb_truetype and the FreeType builder

void ImFontAtlasBuildInit(ImFontAtlas* atlas)

{

// Register texture region for mouse cursors or standard white pixels

if (atlas->PackIdMouseCursors < 0)

{

if (!(atlas->Flags & ImFontAtlasFlags_NoMouseCursors))

atlas->PackIdMouseCursors = atlas->AddCustomRectRegular(FONT_ATLAS_DEFAULT_TEX_DATA_W * 2 + 1, FONT_ATLAS_DEFAULT_TEX_DATA_H);

else

atlas->PackIdMouseCursors = atlas->AddCustomRectRegular(2, 2);

}

// Register texture region for thick lines

// The +2 here is to give space for the end caps, whilst height +1 is to accommodate the fact we have a zero-width row

if (atlas->PackIdLines < 0)

{

if (!(atlas->Flags & ImFontAtlasFlags_NoBakedLines))

atlas->PackIdLines = atlas->AddCustomRectRegular(IM_DRAWLIST_TEX_LINES_WIDTH_MAX + 2, IM_DRAWLIST_TEX_LINES_WIDTH_MAX + 1);

}

// This is called/shared by both the stb_truetype and the FreeType builder.

void ImFontAtlasBuildFinish(ImFontAtlas* atlas)

{

// Render into our custom data blocks

IM_ASSERT(atlas->TexPixelsAlpha8 != NULL || atlas->TexPixelsRGBA32 != NULL);

ImFontAtlasBuildRenderDefaultTexData(atlas);

ImFontAtlasBuildRenderLinesTexData(atlas);

// Register custom rectangle glyphs

for (int i = 0; i < atlas->CustomRects.Size; i++)

{

const ImFontAtlasCustomRect* r = &atlas->CustomRects[i];

if (r->Font == NULL || r->GlyphID == 0)

continue;

// Will ignore ImFontConfig settings: GlyphMinAdvanceX, GlyphMinAdvanceY, PixelSnapH

IM_ASSERT(r->Font->ContainerAtlas == atlas);

ImVec2 uv0, uv1;

atlas->CalcCustomRectUV(r, &uv0, &uv1);

r->Font->AddGlyph(NULL, (ImWchar)r->GlyphID, r->GlyphOffset.x, r->GlyphOffset.y, r->GlyphOffset.x + r->Width, r->GlyphOffset.y + r->Height, uv0.x, uv0.y, uv1.x, uv1.y, r->GlyphAdvanceX);

if (r->GlyphColored)

r->Font->Glyphs.back().Colored = 1;

}

// Build all fonts lookup tables

for (ImFont* font : atlas->Fonts)

if (font->DirtyLookupTables)

font->BuildLookupTable();

atlas->TexReady = true;

}

//-------------------------------------------------------------------------

// [SECTION] ImFontAtlas: glyph ranges helpers

//-------------------------------------------------------------------------

// - GetGlyphRangesDefault()

// - GetGlyphRangesGreek()

// - GetGlyphRangesKorean()

// - GetGlyphRangesChineseFull()

// - GetGlyphRangesChineseSimplifiedCommon()

// - GetGlyphRangesJapanese()

// - GetGlyphRangesCyrillic()

// - GetGlyphRangesThai()

// - GetGlyphRangesVietnamese()

//-----------------------------------------------------------------------------

// Retrieve list of range (2 int per range, values are inclusive)

const ImWchar* ImFontAtlas::GetGlyphRangesDefault()

{

static const ImWchar ranges[] =

{

0x0020, 0x00FF, // Basic Latin + Latin Supplement

0,

};

return &ranges[0];

}

const ImWchar* ImFontAtlas::GetGlyphRangesGreek()

{

static const ImWchar ranges[] =

{

0x0020, 0x00FF, // Basic Latin + Latin Supplement

0x0370, 0x03FF, // Greek and Coptic

0,

};

return &ranges[0];

}

const ImWchar* ImFontAtlas::GetGlyphRangesKorean()

{

static const ImWchar ranges[] =

{

0x0020, 0x00FF, // Basic Latin + Latin Supplement

0x3131, 0x3163, // Korean alphabets

0xAC00, 0xD7A3, // Korean characters

0xFFFD, 0xFFFD, // Invalid

0,

};

return &ranges[0];

}

const ImWchar* ImFontAtlas::GetGlyphRangesChineseFull()

{

static const ImWchar ranges[] =

{

0x0020, 0x00FF, // Basic Latin + Latin Supplement

0x2000, 0x206F, // General Punctuation

0x3000, 0x30FF, // CJK Symbols and Punctuations, Hiragana, Katakana

0x31F0, 0x31FF, // Katakana Phonetic Extensions

0xFF00, 0xFFEF, // Half-width characters

0xFFFD, 0xFFFD, // Invalid

0x4e00, 0x9FAF, // CJK Ideograms

0,

};

return &ranges[0];

}

static void UnpackAccumulativeOffsetsIntoRanges(int base_codepoint, const short* accumulative_offsets, int accumulative_offsets_count, ImWchar* out_ranges)

{

for (int n = 0; n < accumulative_offsets_count; n++, out_ranges += 2)

{

out_ranges[0] = out_ranges[1] = (ImWchar)(base_codepoint + accumulative_offsets[n]);

base_codepoint += accumulative_offsets[n];

}

out_ranges[0] = 0;

}

const ImWchar* ImFontAtlas::GetGlyphRangesChineseSimplifiedCommon()

{

// Store 2500 regularly used characters for Simplified Chinese.

// Sourced from https://zh.wiktionary.org/wiki/%E9%99%84%E5%BD%95:%E7%8E%B0%E4%BB%A3%E6%B1%89%E8%AF%AD%E5%B8%B8%E7%94%A8%E5%AD%97%E8%A1%A8

// This table covers 97.97% of all characters used during the month in July, 1987.

// You can use ImFontGlyphRangesBuilder to create your own ranges derived from this, by merging existing ranges or adding new characters.

// (Stored as accumulative offsets from the initial unicode codepoint 0x4E00. This encoding is designed to helps us compact the source code size.)

static const short accumulative_offsets_from_0x4E00[] =

{

0,1,2,4,1,1,1,1,2,1,3,2,1,2,2,1,1,1,1,1,5,2,1,2,3,3,3,2,2,4,1,1,1,2,1,5,2,3,1,2,1,2,1,1,2,1,1,2,2,1,4,1,1,1,1,5,10,1,2,19,2,1,2,1,2,1,2,1,2,

1,5,1,6,3,2,1,2,2,1,1,1,4,8,5,1,1,4,1,1,3,1,2,1,5,1,2,1,1,1,10,1,1,5,2,4,6,1,4,2,2,2,12,2,1,1,6,1,1,1,4,1,1,4,6,5,1,4,2,2,4,10,7,1,1,4,2,4,

2,1,4,3,6,10,12,5,7,2,14,2,9,1,1,6,7,10,4,7,13,1,5,4,8,4,1,1,2,28,5,6,1,1,5,2,5,20,2,2,9,8,11,2,9,17,1,8,6,8,27,4,6,9,20,11,27,6,68,2,2,1,1,

1,2,1,2,2,7,6,11,3,3,1,1,3,1,2,1,1,1,1,1,3,1,1,8,3,4,1,5,7,2,1,4,4,8,4,2,1,2,1,1,4,5,6,3,6,2,12,3,1,3,9,2,4,3,4,1,5,3,3,1,3,7,1,5,1,1,1,1,2,

3,4,5,2,3,2,6,1,1,2,1,7,1,7,3,4,5,15,2,2,1,5,3,22,19,2,1,1,1,1,2,5,1,1,1,6,1,1,12,8,2,9,18,22,4,1,1,5,1,16,1,2,7,10,15,1,1,6,2,4,1,2,4,1,6,

1,1,3,2,4,1,6,4,5,1,2,1,1,2,1,10,3,1,3,2,1,9,3,2,5,7,2,19,4,3,6,1,1,1,1,1,4,3,2,1,1,1,2,5,3,1,1,1,2,2,1,1,2,1,1,2,1,3,1,1,1,3,7,1,4,1,1,2,1,

1,2,1,2,4,4,3,8,1,1,1,2,1,3,5,1,3,1,3,4,6,2,2,14,4,6,6,11,9,1,15,3,1,28,5,2,5,5,3,1,3,4,5,4,6,14,3,2,3,5,21,2,7,20,10,1,2,19,2,4,28,28,2,3,

2,1,14,4,1,26,28,42,12,40,3,52,79,5,14,17,3,2,2,11,3,4,6,3,1,8,2,23,4,5,8,10,4,2,7,3,5,1,1,6,3,1,2,2,2,5,28,1,1,7,7,20,5,3,29,3,17,26,1,8,4,

27,3,6,11,23,5,3,4,6,13,24,16,6,5,10,25,35,7,3,2,3,3,14,3,6,2,6,1,4,2,3,8,2,1,1,3,3,3,4,1,1,13,2,2,4,5,2,1,14,14,1,2,2,1,4,5,2,3,1,14,3,12,

3,17,2,16,5,1,2,1,8,9,3,19,4,2,2,4,17,25,21,20,28,75,1,10,29,103,4,1,2,1,1,4,2,4,1,2,3,24,2,2,2,1,1,2,1,3,8,1,1,1,2,1,1,3,1,1,1,6,1,5,3,1,1,

1,3,4,1,1,5,2,1,5,6,13,9,16,1,1,1,1,3,2,3,2,4,5,2,5,2,2,3,7,13,7,2,2,1,1,1,1,2,3,3,2,1,6,4,9,2,1,14,2,14,2,1,18,3,4,14,4,11,41,15,23,15,23,

176,1,3,4,1,1,1,1,5,3,1,2,3,7,3,1,1,2,1,2,4,4,6,2,4,1,9,7,1,10,5,8,16,29,1,1,2,2,3,1,3,5,2,4,5,4,1,1,2,2,3,3,7,1,6,10,1,17,1,44,4,6,2,1,1,6,

5,4,2,10,1,6,9,2,8,1,24,1,2,13,7,8,8,2,1,4,1,3,1,3,3,5,2,5,10,9,4,9,12,2,1,6,1,10,1,1,7,7,4,10,8,3,1,13,4,3,1,6,1,3,5,2,1,2,17,16,5,2,16,6,

1,4,2,1,3,3,6,8,5,11,11,1,3,3,2,4,6,10,9,5,7,4,7,4,7,1,1,4,2,1,3,6,8,7,1,6,11,5,5,3,24,9,4,2,7,13,5,1,8,82,16,61,1,1,1,4,2,2,16,10,3,8,1,1,

6,4,2,1,3,1,1,1,4,3,8,4,2,2,1,1,1,1,1,6,3,5,1,1,4,6,9,2,1,1,1,2,1,7,2,1,6,1,5,4,4,3,1,8,1,3,3,1,3,2,2,2,2,3,1,6,1,2,1,2,1,3,7,1,8,2,1,2,1,5,

2,5,3,5,10,1,2,1,1,3,2,5,11,3,9,3,5,1,1,5,9,1,2,1,5,7,9,9,8,1,3,3,3,6,8,2,3,2,1,1,32,6,1,2,15,9,3,7,13,1,3,10,13,2,14,1,13,10,2,1,3,10,4,15,

2,15,15,10,1,3,9,6,9,32,25,26,47,7,3,2,3,1,6,3,4,3,2,8,5,4,1,9,4,2,2,19,10,6,2,3,8,1,2,2,4,2,1,9,4,4,4,6,4,8,9,2,3,1,1,1,1,3,5,5,1,3,8,4,6,

2,1,4,12,1,5,3,7,13,2,5,8,1,6,1,2,5,14,6,1,5,2,4,8,15,5,1,23,6,62,2,10,1,1,8,1,2,2,10,4,2,2,9,2,1,1,3,2,3,1,5,3,3,2,1,3,8,1,1,1,11,3,1,1,4,

3,7,1,14,1,2,3,12,5,2,5,1,6,7,5,7,14,11,1,3,1,8,9,12,2,1,11,8,4,4,2,6,10,9,13,1,1,3,1,5,1,3,2,4,4,1,18,2,3,14,11,4,29,4,2,7,1,3,13,9,2,2,5,

3,5,20,7,16,8,5,72,34,6,4,22,12,12,28,45,36,9,7,39,9,191,1,1,1,4,11,8,4,9,2,3,22,1,1,1,1,4,17,1,7,7,1,11,31,10,2,4,8,2,3,2,1,4,2,16,4,32,2,

3,19,13,4,9,1,5,2,14,8,1,1,3,6,19,6,5,1,16,6,2,10,8,5,1,2,3,1,5,5,1,11,6,6,1,3,3,2,6,3,8,1,1,4,10,7,5,7,7,5,8,9,2,1,3,4,1,1,3,1,3,3,2,6,16,

1,4,6,3,1,10,6,1,3,15,2,9,2,10,25,13,9,16,6,2,2,10,11,4,3,9,1,2,6,6,5,4,30,40,1,10,7,12,14,33,6,3,6,7,3,1,3,1,11,14,4,9,5,12,11,49,18,51,31,

140,31,2,2,1,5,1,8,1,10,1,4,4,3,24,1,10,1,3,6,6,16,3,4,5,2,1,4,2,57,10,6,22,2,22,3,7,22,6,10,11,36,18,16,33,36,2,5,5,1,1,1,4,10,1,4,13,2,7,

5,2,9,3,4,1,7,43,3,7,3,9,14,7,9,1,11,1,1,3,7,4,18,13,1,14,1,3,6,10,73,2,2,30,6,1,11,18,19,13,22,3,46,42,37,89,7,3,16,34,2,2,3,9,1,7,1,1,1,2,

2,4,10,7,3,10,3,9,5,28,9,2,6,13,7,3,1,3,10,2,7,2,11,3,6,21,54,85,2,1,4,2,2,1,39,3,21,2,2,5,1,1,1,4,1,1,3,4,15,1,3,2,4,4,2,3,8,2,20,1,8,7,13,

4,1,26,6,2,9,34,4,21,52,10,4,4,1,5,12,2,11,1,7,2,30,12,44,2,30,1,1,3,6,16,9,17,39,82,2,2,24,7,1,7,3,16,9,14,44,2,1,2,1,2,3,5,2,4,1,6,7,5,3,

2,6,1,11,5,11,2,1,18,19,8,1,3,24,29,2,1,3,5,2,2,1,13,6,5,1,46,11,3,5,1,1,5,8,2,10,6,12,6,3,7,11,2,4,16,13,2,5,1,1,2,2,5,2,28,5,2,23,10,8,4,

4,22,39,95,38,8,14,9,5,1,13,5,4,3,13,12,11,1,9,1,27,37,2,5,4,4,63,211,95,2,2,2,1,3,5,2,1,1,2,2,1,1,1,3,2,4,1,2,1,1,5,2,2,1,1,2,3,1,3,1,1,1,

3,1,4,2,1,3,6,1,1,3,7,15,5,3,2,5,3,9,11,4,2,22,1,6,3,8,7,1,4,28,4,16,3,3,25,4,4,27,27,1,4,1,2,2,7,1,3,5,2,28,8,2,14,1,8,6,16,25,3,3,3,14,3,

3,1,1,2,1,4,6,3,8,4,1,1,1,2,3,6,10,6,2,3,18,3,2,5,5,4,3,1,5,2,5,4,23,7,6,12,6,4,17,11,9,5,1,1,10,5,12,1,1,11,26,33,7,3,6,1,17,7,1,5,12,1,11,

2,4,1,8,14,17,23,1,2,1,7,8,16,11,9,6,5,2,6,4,16,2,8,14,1,11,8,9,1,1,1,9,25,4,11,19,7,2,15,2,12,8,52,7,5,19,2,16,4,36,8,1,16,8,24,26,4,6,2,9,

5,4,36,3,28,12,25,15,37,27,17,12,59,38,5,32,127,1,2,9,17,14,4,1,2,1,1,8,11,50,4,14,2,19,16,4,17,5,4,5,26,12,45,2,23,45,104,30,12,8,3,10,2,2,

3,3,1,4,20,7,2,9,6,15,2,20,1,3,16,4,11,15,6,134,2,5,59,1,2,2,2,1,9,17,3,26,137,10,211,59,1,2,4,1,4,1,1,1,2,6,2,3,1,1,2,3,2,3,1,3,4,4,2,3,3,

1,4,3,1,7,2,2,3,1,2,1,3,3,3,2,2,3,2,1,3,14,6,1,3,2,9,6,15,27,9,34,145,1,1,2,1,1,1,1,2,1,1,1,1,2,2,2,3,1,2,1,1,1,2,3,5,8,3,5,2,4,1,3,2,2,2,12,

4,1,1,1,10,4,5,1,20,4,16,1,15,9,5,12,2,9,2,5,4,2,26,19,7,1,26,4,30,12,15,42,1,6,8,172,1,1,4,2,1,1,11,2,2,4,2,1,2,1,10,8,1,2,1,4,5,1,2,5,1,8,

4,1,3,4,2,1,6,2,1,3,4,1,2,1,1,1,1,12,5,7,2,4,3,1,1,1,3,3,6,1,2,2,3,3,3,2,1,2,12,14,11,6,6,4,12,2,8,1,7,10,1,35,7,4,13,15,4,3,23,21,28,52,5,

26,5,6,1,7,10,2,7,53,3,2,1,1,1,2,163,532,1,10,11,1,3,3,4,8,2,8,6,2,2,23,22,4,2,2,4,2,1,3,1,3,3,5,9,8,2,1,2,8,1,10,2,12,21,20,15,105,2,3,1,1,

3,2,3,1,1,2,5,1,4,15,11,19,1,1,1,1,5,4,5,1,1,2,5,3,5,12,1,2,5,1,11,1,1,15,9,1,4,5,3,26,8,2,1,3,1,1,15,19,2,12,1,2,5,2,7,2,19,2,20,6,26,7,5,

2,2,7,34,21,13,70,2,128,1,1,2,1,1,2,1,1,3,2,2,2,15,1,4,1,3,4,42,10,6,1,49,85,8,1,2,1,1,4,4,2,3,6,1,5,7,4,3,211,4,1,2,1,2,5,1,2,4,2,2,6,5,6,

10,3,4,48,100,6,2,16,296,5,27,387,2,2,3,7,16,8,5,38,15,39,21,9,10,3,7,59,13,27,21,47,5,21,6

};

static ImWchar base_ranges[] = // not zero-terminated

{

0x0020, 0x00FF, // Basic Latin + Latin Supplement

0x2000, 0x206F, // General Punctuation

0x3000, 0x30FF, // CJK Symbols and Punctuations, Hiragana, Katakana

0x31F0, 0x31FF, // Katakana Phonetic Extensions

0xFF00, 0xFFEF, // Half-width characters

0xFFFD, 0xFFFD // Invalid

};

static ImWchar full_ranges[IM_ARRAYSIZE(base_ranges) + IM_ARRAYSIZE(accumulative_offsets_from_0x4E00) * 2 + 1] = { 0 };

if (!full_ranges[0])

{

memcpy(full_ranges, base_ranges, sizeof(base_ranges));

UnpackAccumulativeOffsetsIntoRanges(0x4E00, accumulative_offsets_from_0x4E00, IM_ARRAYSIZE(accumulative_offsets_from_0x4E00), full_ranges + IM_ARRAYSIZE(base_ranges));

}

return &full_ranges[0];

}

const ImWchar* ImFontAtlas::GetGlyphRangesJapanese()

{

// 2999 ideograms code points for Japanese

// - 2136 Joyo (meaning "for regular use" or "for common use") Kanji code points

// - 863 Jinmeiyo (meaning "for personal name") Kanji code points

// - Sourced from official information provided by the government agencies of Japan:

// - List of Joyo Kanji by the Agency for Cultural Affairs

// - https://www.bunka.go.jp/kokugo_nihongo/sisaku/joho/joho/kijun/naikaku/kanji/

// - List of Jinmeiyo Kanji by the Ministry of Justice

// - http://www.moj.go.jp/MINJI/minji86.html

// - Available under the terms of the Creative Commons Attribution 4.0 International (CC BY 4.0).

// - https://creativecommons.org/licenses/by/4.0/legalcode

// - You can generate this code by the script at:

// - https://github.com/vaiorabbit/everyday_use_kanji

// - References:

// - List of Joyo Kanji

// - (Wikipedia) https://en.wikipedia.org/wiki/List_of_j%C5%8Dy%C5%8D_kanji

// - List of Jinmeiyo Kanji

// - (Wikipedia) https://en.wikipedia.org/wiki/Jinmeiy%C5%8D_kanji

// - Missing 1 Joyo Kanji: U+20B9F (Kun'yomi: Shikaru, On'yomi: Shitsu,shichi), see https://github.com/ocornut/imgui/pull/3627 for details.

// You can use ImFontGlyphRangesBuilder to create your own ranges derived from this, by merging existing ranges or adding new characters.

// (Stored as accumulative offsets from the initial unicode codepoint 0x4E00. This encoding is designed to helps us compact the source code size.)

static const short accumulative_offsets_from_0x4E00[] =

{

0,1,2,4,1,1,1,1,2,1,3,3,2,2,1,5,3,5,7,5,6,1,2,1,7,2,6,3,1,8,1,1,4,1,1,18,2,11,2,6,2,1,2,1,5,1,2,1,3,1,2,1,2,3,3,1,1,2,3,1,1,1,12,7,9,1,4,5,1,

1,2,1,10,1,1,9,2,2,4,5,6,9,3,1,1,1,1,9,3,18,5,2,2,2,2,1,6,3,7,1,1,1,1,2,2,4,2,1,23,2,10,4,3,5,2,4,10,2,4,13,1,6,1,9,3,1,1,6,6,7,6,3,1,2,11,3,

2,2,3,2,15,2,2,5,4,3,6,4,1,2,5,2,12,16,6,13,9,13,2,1,1,7,16,4,7,1,19,1,5,1,2,2,7,7,8,2,6,5,4,9,18,7,4,5,9,13,11,8,15,2,1,1,1,2,1,2,2,1,2,2,8,

2,9,3,3,1,1,4,4,1,1,1,4,9,1,4,3,5,5,2,7,5,3,4,8,2,1,13,2,3,3,1,14,1,1,4,5,1,3,6,1,5,2,1,1,3,3,3,3,1,1,2,7,6,6,7,1,4,7,6,1,1,1,1,1,12,3,3,9,5,

2,6,1,5,6,1,2,3,18,2,4,14,4,1,3,6,1,1,6,3,5,5,3,2,2,2,2,12,3,1,4,2,3,2,3,11,1,7,4,1,2,1,3,17,1,9,1,24,1,1,4,2,2,4,1,2,7,1,1,1,3,1,2,2,4,15,1,

1,2,1,1,2,1,5,2,5,20,2,5,9,1,10,8,7,6,1,1,1,1,1,1,6,2,1,2,8,1,1,1,1,5,1,1,3,1,1,1,1,3,1,1,12,4,1,3,1,1,1,1,1,10,3,1,7,5,13,1,2,3,4,6,1,1,30,

2,9,9,1,15,38,11,3,1,8,24,7,1,9,8,10,2,1,9,31,2,13,6,2,9,4,49,5,2,15,2,1,10,2,1,1,1,2,2,6,15,30,35,3,14,18,8,1,16,10,28,12,19,45,38,1,3,2,3,

13,2,1,7,3,6,5,3,4,3,1,5,7,8,1,5,3,18,5,3,6,1,21,4,24,9,24,40,3,14,3,21,3,2,1,2,4,2,3,1,15,15,6,5,1,1,3,1,5,6,1,9,7,3,3,2,1,4,3,8,21,5,16,4,

5,2,10,11,11,3,6,3,2,9,3,6,13,1,2,1,1,1,1,11,12,6,6,1,4,2,6,5,2,1,1,3,3,6,13,3,1,1,5,1,2,3,3,14,2,1,2,2,2,5,1,9,5,1,1,6,12,3,12,3,4,13,2,14,

2,8,1,17,5,1,16,4,2,2,21,8,9,6,23,20,12,25,19,9,38,8,3,21,40,25,33,13,4,3,1,4,1,2,4,1,2,5,26,2,1,1,2,1,3,6,2,1,1,1,1,1,1,2,3,1,1,1,9,2,3,1,1,

1,3,6,3,2,1,1,6,6,1,8,2,2,2,1,4,1,2,3,2,7,3,2,4,1,2,1,2,2,1,1,1,1,1,3,1,2,5,4,10,9,4,9,1,1,1,1,1,1,5,3,2,1,6,4,9,6,1,10,2,31,17,8,3,7,5,40,1,

7,7,1,6,5,2,10,7,8,4,15,39,25,6,28,47,18,10,7,1,3,1,1,2,1,1,1,3,3,3,1,1,1,3,4,2,1,4,1,3,6,10,7,8,6,2,2,1,3,3,2,5,8,7,9,12,2,15,1,1,4,1,2,1,1,

1,3,2,1,3,3,5,6,2,3,2,10,1,4,2,8,1,1,1,11,6,1,21,4,16,3,1,3,1,4,2,3,6,5,1,3,1,1,3,3,4,6,1,1,10,4,2,7,10,4,7,4,2,9,4,3,1,1,1,4,1,8,3,4,1,3,1,

6,1,4,2,1,4,7,2,1,8,1,4,5,1,1,2,2,4,6,2,7,1,10,1,1,3,4,11,10,8,21,4,6,1,3,5,2,1,2,28,5,5,2,3,13,1,2,3,1,4,2,1,5,20,3,8,11,1,3,3,3,1,8,10,9,2,

10,9,2,3,1,1,2,4,1,8,3,6,1,7,8,6,11,1,4,29,8,4,3,1,2,7,13,1,4,1,6,2,6,12,12,2,20,3,2,3,6,4,8,9,2,7,34,5,1,18,6,1,1,4,4,5,7,9,1,2,2,4,3,4,1,7,

2,2,2,6,2,3,25,5,3,6,1,4,6,7,4,2,1,4,2,13,6,4,4,3,1,5,3,4,4,3,2,1,1,4,1,2,1,1,3,1,11,1,6,3,1,7,3,6,2,8,8,6,9,3,4,11,3,2,10,12,2,5,11,1,6,4,5,

3,1,8,5,4,6,6,3,5,1,1,3,2,1,2,2,6,17,12,1,10,1,6,12,1,6,6,19,9,6,16,1,13,4,4,15,7,17,6,11,9,15,12,6,7,2,1,2,2,15,9,3,21,4,6,49,18,7,3,2,3,1,

6,8,2,2,6,2,9,1,3,6,4,4,1,2,16,2,5,2,1,6,2,3,5,3,1,2,5,1,2,1,9,3,1,8,6,4,8,11,3,1,1,1,1,3,1,13,8,4,1,3,2,2,1,4,1,11,1,5,2,1,5,2,5,8,6,1,1,7,

4,3,8,3,2,7,2,1,5,1,5,2,4,7,6,2,8,5,1,11,4,5,3,6,18,1,2,13,3,3,1,21,1,1,4,1,4,1,1,1,8,1,2,2,7,1,2,4,2,2,9,2,1,1,1,4,3,6,3,12,5,1,1,1,5,6,3,2,

4,8,2,2,4,2,7,1,8,9,5,2,3,2,1,3,2,13,7,14,6,5,1,1,2,1,4,2,23,2,1,1,6,3,1,4,1,15,3,1,7,3,9,14,1,3,1,4,1,1,5,8,1,3,8,3,8,15,11,4,14,4,4,2,5,5,

1,7,1,6,14,7,7,8,5,15,4,8,6,5,6,2,1,13,1,20,15,11,9,2,5,6,2,11,2,6,2,5,1,5,8,4,13,19,25,4,1,1,11,1,34,2,5,9,14,6,2,2,6,1,1,14,1,3,14,13,1,6,

12,21,14,14,6,32,17,8,32,9,28,1,2,4,11,8,3,1,14,2,5,15,1,1,1,1,3,6,4,1,3,4,11,3,1,1,11,30,1,5,1,4,1,5,8,1,1,3,2,4,3,17,35,2,6,12,17,3,1,6,2,

1,1,12,2,7,3,3,2,1,16,2,8,3,6,5,4,7,3,3,8,1,9,8,5,1,2,1,3,2,8,1,2,9,12,1,1,2,3,8,3,24,12,4,3,7,5,8,3,3,3,3,3,3,1,23,10,3,1,2,2,6,3,1,16,1,16,

22,3,10,4,11,6,9,7,7,3,6,2,2,2,4,10,2,1,1,2,8,7,1,6,4,1,3,3,3,5,10,12,12,2,3,12,8,15,1,1,16,6,6,1,5,9,11,4,11,4,2,6,12,1,17,5,13,1,4,9,5,1,11,

2,1,8,1,5,7,28,8,3,5,10,2,17,3,38,22,1,2,18,12,10,4,38,18,1,4,44,19,4,1,8,4,1,12,1,4,31,12,1,14,7,75,7,5,10,6,6,13,3,2,11,11,3,2,5,28,15,6,18,

18,5,6,4,3,16,1,7,18,7,36,3,5,3,1,7,1,9,1,10,7,2,4,2,6,2,9,7,4,3,32,12,3,7,10,2,23,16,3,1,12,3,31,4,11,1,3,8,9,5,1,30,15,6,12,3,2,2,11,19,9,

14,2,6,2,3,19,13,17,5,3,3,25,3,14,1,1,1,36,1,3,2,19,3,13,36,9,13,31,6,4,16,34,2,5,4,2,3,3,5,1,1,1,4,3,1,17,3,2,3,5,3,1,3,2,3,5,6,3,12,11,1,3,

1,2,26,7,12,7,2,14,3,3,7,7,11,25,25,28,16,4,36,1,2,1,6,2,1,9,3,27,17,4,3,4,13,4,1,3,2,2,1,10,4,2,4,6,3,8,2,1,18,1,1,24,2,2,4,33,2,3,63,7,1,6,

40,7,3,4,4,2,4,15,18,1,16,1,1,11,2,41,14,1,3,18,13,3,2,4,16,2,17,7,15,24,7,18,13,44,2,2,3,6,1,1,7,5,1,7,1,4,3,3,5,10,8,2,3,1,8,1,1,27,4,2,1,

12,1,2,1,10,6,1,6,7,5,2,3,7,11,5,11,3,6,6,2,3,15,4,9,1,1,2,1,2,11,2,8,12,8,5,4,2,3,1,5,2,2,1,14,1,12,11,4,1,11,17,17,4,3,2,5,5,7,3,1,5,9,9,8,

2,5,6,6,13,13,2,1,2,6,1,2,2,49,4,9,1,2,10,16,7,8,4,3,2,23,4,58,3,29,1,14,19,19,11,11,2,7,5,1,3,4,6,2,18,5,12,12,17,17,3,3,2,4,1,6,2,3,4,3,1,

1,1,1,5,1,1,9,1,3,1,3,6,1,8,1,1,2,6,4,14,3,1,4,11,4,1,3,32,1,2,4,13,4,1,2,4,2,1,3,1,11,1,4,2,1,4,4,6,3,5,1,6,5,7,6,3,23,3,5,3,5,3,3,13,3,9,10,

1,12,10,2,3,18,13,7,160,52,4,2,2,3,2,14,5,4,12,4,6,4,1,20,4,11,6,2,12,27,1,4,1,2,2,7,4,5,2,28,3,7,25,8,3,19,3,6,10,2,2,1,10,2,5,4,1,3,4,1,5,

3,2,6,9,3,6,2,16,3,3,16,4,5,5,3,2,1,2,16,15,8,2,6,21,2,4,1,22,5,8,1,1,21,11,2,1,11,11,19,13,12,4,2,3,2,3,6,1,8,11,1,4,2,9,5,2,1,11,2,9,1,1,2,

14,31,9,3,4,21,14,4,8,1,7,2,2,2,5,1,4,20,3,3,4,10,1,11,9,8,2,1,4,5,14,12,14,2,17,9,6,31,4,14,1,20,13,26,5,2,7,3,6,13,2,4,2,19,6,2,2,18,9,3,5,

12,12,14,4,6,2,3,6,9,5,22,4,5,25,6,4,8,5,2,6,27,2,35,2,16,3,7,8,8,6,6,5,9,17,2,20,6,19,2,13,3,1,1,1,4,17,12,2,14,7,1,4,18,12,38,33,2,10,1,1,

2,13,14,17,11,50,6,33,20,26,74,16,23,45,50,13,38,33,6,6,7,4,4,2,1,3,2,5,8,7,8,9,3,11,21,9,13,1,3,10,6,7,1,2,2,18,5,5,1,9,9,2,68,9,19,13,2,5,

1,4,4,7,4,13,3,9,10,21,17,3,26,2,1,5,2,4,5,4,1,7,4,7,3,4,2,1,6,1,1,20,4,1,9,2,2,1,3,3,2,3,2,1,1,1,20,2,3,1,6,2,3,6,2,4,8,1,3,2,10,3,5,3,4,4,

3,4,16,1,6,1,10,2,4,2,1,1,2,10,11,2,2,3,1,24,31,4,10,10,2,5,12,16,164,15,4,16,7,9,15,19,17,1,2,1,1,5,1,1,1,1,1,3,1,4,3,1,3,1,3,1,2,1,1,3,3,7,

2,8,1,2,2,2,1,3,4,3,7,8,12,92,2,10,3,1,3,14,5,25,16,42,4,7,7,4,2,21,5,27,26,27,21,25,30,31,2,1,5,13,3,22,5,6,6,11,9,12,1,5,9,7,5,5,22,60,3,5,

13,1,1,8,1,1,3,3,2,1,9,3,3,18,4,1,2,3,7,6,3,1,2,3,9,1,3,1,3,2,1,3,1,1,1,2,1,11,3,1,6,9,1,3,2,3,1,2,1,5,1,1,4,3,4,1,2,2,4,4,1,7,2,1,2,2,3,5,13,

18,3,4,14,9,9,4,16,3,7,5,8,2,6,48,28,3,1,1,4,2,14,8,2,9,2,1,15,2,4,3,2,10,16,12,8,7,1,1,3,1,1,1,2,7,4,1,6,4,38,39,16,23,7,15,15,3,2,12,7,21,

37,27,6,5,4,8,2,10,8,8,6,5,1,2,1,3,24,1,16,17,9,23,10,17,6,1,51,55,44,13,294,9,3,6,2,4,2,2,15,1,1,1,13,21,17,68,14,8,9,4,1,4,9,3,11,7,1,1,1,

5,6,3,2,1,1,1,2,3,8,1,2,2,4,1,5,5,2,1,4,3,7,13,4,1,4,1,3,1,1,1,5,5,10,1,6,1,5,2,1,5,2,4,1,4,5,7,3,18,2,9,11,32,4,3,3,2,4,7,11,16,9,11,8,13,38,

32,8,4,2,1,1,2,1,2,4,4,1,1,1,4,1,21,3,11,1,16,1,1,6,1,3,2,4,9,8,57,7,44,1,3,3,13,3,10,1,1,7,5,2,7,21,47,63,3,15,4,7,1,16,1,1,2,8,2,3,42,15,4,

1,29,7,22,10,3,78,16,12,20,18,4,67,11,5,1,3,15,6,21,31,32,27,18,13,71,35,5,142,4,10,1,2,50,19,33,16,35,37,16,19,27,7,1,133,19,1,4,8,7,20,1,4,

4,1,10,3,1,6,1,2,51,5,40,15,24,43,22928,11,1,13,154,70,3,1,1,7,4,10,1,2,1,1,2,1,2,1,2,2,1,1,2,1,1,1,1,1,2,1,1,1,1,1,1,1,1,1,1,1,1,1,2,1,1,1,

3,2,1,1,1,1,2,1,1,

};

static ImWchar base_ranges[] = // not zero-terminated

{

0x0020, 0x00FF, // Basic Latin + Latin Supplement

0x3000, 0x30FF, // CJK Symbols and Punctuations, Hiragana, Katakana

0x31F0, 0x31FF, // Katakana Phonetic Extensions

0xFF00, 0xFFEF, // Half-width characters

0xFFFD, 0xFFFD // Invalid

};

static ImWchar full_ranges[IM_ARRAYSIZE(base_ranges) + IM_ARRAYSIZE(accumulative_offsets_from_0x4E00)*2 + 1] = { 0 };

if (!full_ranges[0])

{

memcpy(full_ranges, base_ranges, sizeof(base_ranges));

UnpackAccumulativeOffsetsIntoRanges(0x4E00, accumulative_offsets_from_0x4E00, IM_ARRAYSIZE(accumulative_offsets_from_0x4E00), full_ranges + IM_ARRAYSIZE(base_ranges));

}

return &full_ranges[0];

}

const ImWchar* ImFontAtlas::GetGlyphRangesCyrillic()

{

static const ImWchar ranges[] =

{

0x0020, 0x00FF, // Basic Latin + Latin Supplement

0x0400, 0x052F, // Cyrillic + Cyrillic Supplement

0x2DE0, 0x2DFF, // Cyrillic Extended-A

0xA640, 0xA69F, // Cyrillic Extended-B

0,

};

return &ranges[0];

}

const ImWchar* ImFontAtlas::GetGlyphRangesThai()

{

static const ImWchar ranges[] =

{

0x0020, 0x00FF, // Basic Latin

0x2010, 0x205E, // Punctuations

0x0E00, 0x0E7F, // Thai

0,

};

return &ranges[0];

}

const ImWchar* ImFontAtlas::GetGlyphRangesVietnamese()

{

static const ImWchar ranges[] =

{

0x0020, 0x00FF, // Basic Latin

0x0102, 0x0103,

0x0110, 0x0111,

0x0128, 0x0129,

0x0168, 0x0169,

0x01A0, 0x01A1,

0x01AF, 0x01B0,

0x1EA0, 0x1EF9,

0,

};

return &ranges[0];

}

//-----------------------------------------------------------------------------

// [SECTION] ImFontGlyphRangesBuilder

//-----------------------------------------------------------------------------

void ImFontGlyphRangesBuilder::AddText(const char* text, const char* text_end)

{

while (text_end ? (text < text_end) : *text)

{

unsigned int c = 0;

int c_len = ImTextCharFromUtf8(&c, text, text_end);

text += c_len;

if (c_len == 0)

break;

AddChar((ImWchar)c);

}

void ImFontGlyphRangesBuilder::AddRanges(const ImWchar* ranges)

{

for (; ranges[0]; ranges += 2)

for (unsigned int c = ranges[0]; c <= ranges[1] && c <= IM_UNICODE_CODEPOINT_MAX; c++) //-V560

AddChar((ImWchar)c);

}

void ImFontGlyphRangesBuilder::BuildRanges(ImVector<ImWchar>* out_ranges)

{

const int max_codepoint = IM_UNICODE_CODEPOINT_MAX;

for (int n = 0; n <= max_codepoint; n++)

if (GetBit(n))

{

out_ranges->push_back((ImWchar)n);

while (n < max_codepoint && GetBit(n + 1))

n++;

out_ranges->push_back((ImWchar)n);

}

out_ranges->push_back(0);

}

//-----------------------------------------------------------------------------

// [SECTION] ImFont

//-----------------------------------------------------------------------------

ImFont::ImFont()

{

memset(this, 0, sizeof(*this));

Scale = 1.0f;

}

ImFont::~ImFont()

{

ClearOutputData();

}

void ImFont::ClearOutputData()

{

FontSize = 0.0f;

FallbackAdvanceX = 0.0f;

Glyphs.clear();

IndexAdvanceX.clear();

IndexLookup.clear();

FallbackGlyph = NULL;

ContainerAtlas = NULL;

DirtyLookupTables = true;

Ascent = Descent = 0.0f;

MetricsTotalSurface = 0;

memset(Used8kPagesMap, 0, sizeof(Used8kPagesMap));

}

static ImWchar FindFirstExistingGlyph(ImFont* font, const ImWchar* candidate_chars, int candidate_chars_count)

{

for (int n = 0; n < candidate_chars_count; n++)

if (font->FindGlyphNoFallback(candidate_chars[n]) != NULL)

return candidate_chars[n];

return 0;

}

void ImFont::BuildLookupTable()

{

int max_codepoint = 0;

for (int i = 0; i != Glyphs.Size; i++)

max_codepoint = ImMax(max_codepoint, (int)Glyphs[i].Codepoint);

// Build lookup table

IM_ASSERT(Glyphs.Size > 0 && "Font has not loaded glyph!");

IM_ASSERT(Glyphs.Size < 0xFFFF); // -1 is reserved

IndexAdvanceX.clear();

IndexLookup.clear();

DirtyLookupTables = false;

memset(Used8kPagesMap, 0, sizeof(Used8kPagesMap));

GrowIndex(max_codepoint + 1);

for (int i = 0; i < Glyphs.Size; i++)

{

int codepoint = (int)Glyphs[i].Codepoint;

IndexAdvanceX[codepoint] = Glyphs[i].AdvanceX;

IndexLookup[codepoint] = (ImU16)i;

// Mark 4K page as used

const int page_n = codepoint / 8192;

Used8kPagesMap[page_n >> 3] |= 1 << (page_n & 7);

}

// Create a glyph to handle TAB

// FIXME: Needs proper TAB handling but it needs to be contextualized (or we could arbitrary say that each string starts at "column 0" ?)

if (FindGlyph((ImWchar)' '))

{

if (Glyphs.back().Codepoint != '\t') // So we can call this function multiple times (FIXME: Flaky)

Glyphs.resize(Glyphs.Size + 1);

ImFontGlyph& tab_glyph = Glyphs.back();

tab_glyph = *FindGlyph((ImWchar)' ');

tab_glyph.Codepoint = '\t';

tab_glyph.AdvanceX *= IM_TABSIZE;

IndexAdvanceX[(int)tab_glyph.Codepoint] = (float)tab_glyph.AdvanceX;

IndexLookup[(int)tab_glyph.Codepoint] = (ImU16)(Glyphs.Size - 1);

}

// Mark special glyphs as not visible (note that AddGlyph already mark as non-visible glyphs with zero-size polygons)

if (ImFontGlyph* glyph = (ImFontGlyph*)(void*)FindGlyph((ImWchar)' '))

glyph->Visible = false;

if (ImFontGlyph* glyph = (ImFontGlyph*)(void*)FindGlyph((ImWchar)'\t'))

glyph->Visible = false;

// Setup Fallback character

const ImWchar fallback_chars[] = { (ImWchar)IM_UNICODE_CODEPOINT_INVALID, (ImWchar)'?', (ImWchar)' ' };

FallbackGlyph = FindGlyphNoFallback(FallbackChar);

if (FallbackGlyph == NULL)

{

FallbackChar = FindFirstExistingGlyph(this, fallback_chars, IM_ARRAYSIZE(fallback_chars));

FallbackGlyph = FindGlyphNoFallback(FallbackChar);

if (FallbackGlyph == NULL)

{

FallbackGlyph = &Glyphs.back();

FallbackChar = (ImWchar)FallbackGlyph->Codepoint;

}

FallbackAdvanceX = FallbackGlyph->AdvanceX;

for (int i = 0; i < max_codepoint + 1; i++)

if (IndexAdvanceX[i] < 0.0f)

IndexAdvanceX[i] = FallbackAdvanceX;

// Setup Ellipsis character. It is required for rendering elided text. We prefer using U+2026 (horizontal ellipsis).

// However some old fonts may contain ellipsis at U+0085. Here we auto-detect most suitable ellipsis character.

// FIXME: Note that 0x2026 is rarely included in our font ranges. Because of this we are more likely to use three individual dots.

const ImWchar ellipsis_chars[] = { ConfigData->EllipsisChar, (ImWchar)0x2026, (ImWchar)0x0085 };

const ImWchar dots_chars[] = { (ImWchar)'.', (ImWchar)0xFF0E };

if (EllipsisChar == 0)

EllipsisChar = FindFirstExistingGlyph(this, ellipsis_chars, IM_ARRAYSIZE(ellipsis_chars));

const ImWchar dot_char = FindFirstExistingGlyph(this, dots_chars, IM_ARRAYSIZE(dots_chars));

if (EllipsisChar != 0)

{

EllipsisCharCount = 1;

EllipsisWidth = EllipsisCharStep = FindGlyph(EllipsisChar)->X1;

}

else if (dot_char != 0)

{

const ImFontGlyph* dot_glyph = FindGlyph(dot_char);

EllipsisChar = dot_char;

EllipsisCharCount = 3;

EllipsisCharStep = (float)(int)(dot_glyph->X1 - dot_glyph->X0) + 1.0f;

EllipsisWidth = ImMax(dot_glyph->AdvanceX, dot_glyph->X0 + EllipsisCharStep * 3.0f - 1.0f); // FIXME: Slightly odd for normally mono-space fonts but since this is used for trailing contents.

}

// API is designed this way to avoid exposing the 8K page size

// e.g. use with IsGlyphRangeUnused(0, 255)

bool ImFont::IsGlyphRangeUnused(unsigned int c_begin, unsigned int c_last)

{

unsigned int page_begin = (c_begin / 8192);

unsigned int page_last = (c_last / 8192);

for (unsigned int page_n = page_begin; page_n <= page_last; page_n++)

if ((page_n >> 3) < sizeof(Used8kPagesMap))

if (Used8kPagesMap[page_n >> 3] & (1 << (page_n & 7)))

return false;

return true;

}

void ImFont::GrowIndex(int new_size)

{

IM_ASSERT(IndexAdvanceX.Size == IndexLookup.Size);

if (new_size <= IndexLookup.Size)

return;

IndexAdvanceX.resize(new_size, -1.0f);

IndexLookup.resize(new_size, (ImU16)-1);

}

// x0/y0/x1/y1 are offset from the character upper-left layout position, in pixels. Therefore x0/y0 are often fairly close to zero.

// Not to be mistaken with texture coordinates, which are held by u0/v0/u1/v1 in normalized format (0.0..1.0 on each texture axis).

// 'cfg' is not necessarily == 'this->ConfigData' because multiple source fonts+configs can be used to build one target font.

void ImFont::AddGlyph(const ImFontConfig* cfg, ImWchar codepoint, float x0, float y0, float x1, float y1, float u0, float v0, float u1, float v1, float advance_x)

{

if (cfg != NULL)

{

// Clamp & recenter if needed

const float advance_x_original = advance_x;

advance_x = ImClamp(advance_x, cfg->GlyphMinAdvanceX, cfg->GlyphMaxAdvanceX);

if (advance_x != advance_x_original)

{

float char_off_x = cfg->PixelSnapH ? ImTrunc((advance_x - advance_x_original) * 0.5f) : (advance_x - advance_x_original) * 0.5f;

x0 += char_off_x;

x1 += char_off_x;

}

// Snap to pixel

if (cfg->PixelSnapH)

advance_x = IM_ROUND(advance_x);

// Bake extra spacing

advance_x += cfg->GlyphExtraAdvanceX;

}

int glyph_idx = Glyphs.Size;

Glyphs.resize(Glyphs.Size + 1);

ImFontGlyph& glyph = Glyphs[glyph_idx];

glyph.Codepoint = (unsigned int)codepoint;

glyph.Visible = (x0 != x1) && (y0 != y1);

glyph.Colored = false;

glyph.X0 = x0;

glyph.Y0 = y0;

glyph.X1 = x1;

glyph.Y1 = y1;

glyph.U0 = u0;

glyph.V0 = v0;

glyph.U1 = u1;

glyph.V1 = v1;

glyph.AdvanceX = advance_x;

IM_ASSERT(Glyphs.Size < 0xFFFF); // IndexLookup[] hold 16-bit values and -1 is reserved.

// Compute rough surface usage metrics (+1 to account for average padding, +0.99 to round)

// We use (U1-U0)*TexWidth instead of X1-X0 to account for oversampling.

float pad = ContainerAtlas->TexGlyphPadding + 0.99f;

DirtyLookupTables = true;

MetricsTotalSurface += (int)((glyph.U1 - glyph.U0) * ContainerAtlas->TexWidth + pad) * (int)((glyph.V1 - glyph.V0) * ContainerAtlas->TexHeight + pad);

}

void ImFont::AddRemapChar(ImWchar dst, ImWchar src, bool overwrite_dst)

{

IM_ASSERT(IndexLookup.Size > 0); // Currently this can only be called AFTER the font has been built, aka after calling ImFontAtlas::GetTexDataAs*() function.

unsigned int index_size = (unsigned int)IndexLookup.Size;

if (dst < index_size && IndexLookup.Data[dst] == (ImU16)-1 && !overwrite_dst) // 'dst' already exists

return;

if (src >= index_size && dst >= index_size) // both 'dst' and 'src' don't exist -> no-op

return;

GrowIndex(dst + 1);

IndexLookup[dst] = (src < index_size) ? IndexLookup.Data[src] : (ImU16)-1;

IndexAdvanceX[dst] = (src < index_size) ? IndexAdvanceX.Data[src] : 1.0f;

}

// Find glyph, return fallback if missing

ImFontGlyph* ImFont::FindGlyph(ImWchar c)

{

if (c >= (size_t)IndexLookup.Size)

return FallbackGlyph;

const ImU16 i = IndexLookup.Data[c];

if (i == (ImU16)-1)

return FallbackGlyph;

return &Glyphs.Data[i];

}

ImFontGlyph* ImFont::FindGlyphNoFallback(ImWchar c)

{

if (c >= (size_t)IndexLookup.Size)

return NULL;

const ImU16 i = IndexLookup.Data[c];

if (i == (ImU16)-1)

return NULL;

return &Glyphs.Data[i];

}

// Trim trailing space and find beginning of next line

static inline const char* CalcWordWrapNextLineStartA(const char* text, const char* text_end)

{

while (text < text_end && ImCharIsBlankA(*text))

text++;

if (*text == '\n')

text++;

return text;

}

#define ImFontGetCharAdvanceX(_FONT, _CH) ((int)(_CH) < (_FONT)->IndexAdvanceX.Size ? (_FONT)->IndexAdvanceX.Data[_CH] : (_FONT)->FallbackAdvanceX)

// Simple word-wrapping for English, not full-featured. Please submit failing cases!

// This will return the next location to wrap from. If no wrapping if necessary, this will fast-forward to e.g. text_end.

// FIXME: Much possible improvements (don't cut things like "word !", "word!!!" but cut within "word,,,,", more sensible support for punctuations, support for Unicode punctuations, etc.)

const char* ImFont::CalcWordWrapPositionA(float scale, const char* text, const char* text_end, float wrap_width)

{

// For references, possible wrap point marked with ^

// "aaa bbb, ccc,ddd. eee fff. ggg!"

// ^ ^ ^ ^ ^__ ^ ^

// List of hardcoded separators: .,;!?'"

// Skip extra blanks after a line returns (that includes not counting them in width computation)

// e.g. "Hello world" --> "Hello" "World"

// Cut words that cannot possibly fit within one line.

// e.g.: "The tropical fish" with ~5 characters worth of width --> "The tr" "opical" "fish"

float line_width = 0.0f;

float word_width = 0.0f;

float blank_width = 0.0f;

wrap_width /= scale; // We work with unscaled widths to avoid scaling every characters

const char* word_end = text;

const char* prev_word_end = NULL;

bool inside_word = true;

const char* s = text;

IM_ASSERT(text_end != NULL);

while (s < text_end)

{

unsigned int c = (unsigned int)*s;

const char* next_s;

if (c < 0x80)

next_s = s + 1;

else

next_s = s + ImTextCharFromUtf8(&c, s, text_end);

if (c < 32)

{

if (c == '\n')

{

line_width = word_width = blank_width = 0.0f;

inside_word = true;

s = next_s;

continue;

}

if (c == '\r')

{

s = next_s;

continue;

}

const float char_width = ImFontGetCharAdvanceX(this, c);

if (ImCharIsBlankW(c))

{

if (inside_word)

{

line_width += blank_width;

blank_width = 0.0f;

word_end = s;

}

blank_width += char_width;

inside_word = false;

}

else

{

word_width += char_width;

if (inside_word)

{

word_end = next_s;

}

else

{

prev_word_end = word_end;

line_width += word_width + blank_width;

word_width = blank_width = 0.0f;

}

// Allow wrapping after punctuation.

inside_word = (c != '.' && c != ',' && c != ';' && c != '!' && c != '?' && c != '\"');

}

// We ignore blank width at the end of the line (they can be skipped)

if (line_width + word_width > wrap_width)

{

// Words that cannot possibly fit within an entire line will be cut anywhere.

if (word_width < wrap_width)

s = prev_word_end ? prev_word_end : word_end;

break;

}

s = next_s;

}

// Wrap_width is too small to fit anything. Force displaying 1 character to minimize the height discontinuity.

// +1 may not be a character start point in UTF-8 but it's ok because caller loops use (text >= word_wrap_eol).

if (s == text && text < text_end)

return s + 1;

return s;

}

ImVec2 ImFont::CalcTextSizeA(float size, float max_width, float wrap_width, const char* text_begin, const char* text_end, const char** remaining)

{

if (!text_end)

text_end = text_begin + strlen(text_begin); // FIXME-OPT: Need to avoid this.

const float line_height = size;

const float scale = size / FontSize;

ImVec2 text_size = ImVec2(0, 0);

float line_width = 0.0f;

const bool word_wrap_enabled = (wrap_width > 0.0f);

const char* word_wrap_eol = NULL;

const char* s = text_begin;

while (s < text_end)

{

if (word_wrap_enabled)

{

// Calculate how far we can render. Requires two passes on the string data but keeps the code simple and not intrusive for what's essentially an uncommon feature.

if (!word_wrap_eol)

word_wrap_eol = CalcWordWrapPositionA(scale, s, text_end, wrap_width - line_width);

if (s >= word_wrap_eol)

{

if (text_size.x < line_width)

text_size.x = line_width;

text_size.y += line_height;

line_width = 0.0f;

word_wrap_eol = NULL;

s = CalcWordWrapNextLineStartA(s, text_end); // Wrapping skips upcoming blanks

continue;

}

// Decode and advance source

const char* prev_s = s;

unsigned int c = (unsigned int)*s;

if (c < 0x80)

s += 1;

else

s += ImTextCharFromUtf8(&c, s, text_end);

if (c < 32)

{

if (c == '\n')

{

text_size.x = ImMax(text_size.x, line_width);

text_size.y += line_height;

line_width = 0.0f;

continue;

}

if (c == '\r')

continue;

}

const float char_width = ImFontGetCharAdvanceX(this, c) * scale;

if (line_width + char_width >= max_width)

{

s = prev_s;

break;

}

line_width += char_width;

}

if (text_size.x < line_width)

text_size.x = line_width;

if (line_width > 0 || text_size.y == 0.0f)

text_size.y += line_height;

if (remaining)

*remaining = s;

return text_size;

}

// Note: as with every ImDrawList drawing function, this expects that the font atlas texture is bound.

void ImFont::RenderChar(ImDrawList* draw_list, float size, const ImVec2& pos, ImU32 col, ImWchar c)

{

const ImFontGlyph* glyph = FindGlyph(c);

if (!glyph || !glyph->Visible)

return;

if (glyph->Colored)

col |= ~IM_COL32_A_MASK;

float scale = (size >= 0.0f) ? (size / FontSize) : 1.0f;

float x = IM_TRUNC(pos.x);

float y = IM_TRUNC(pos.y);

draw_list->PrimReserve(6, 4);

draw_list->PrimRectUV(ImVec2(x + glyph->X0 * scale, y + glyph->Y0 * scale), ImVec2(x + glyph->X1 * scale, y + glyph->Y1 * scale), ImVec2(glyph->U0, glyph->V0), ImVec2(glyph->U1, glyph->V1), col);

}

// Note: as with every ImDrawList drawing function, this expects that the font atlas texture is bound.

void ImFont::RenderText(ImDrawList* draw_list, float size, const ImVec2& pos, ImU32 col, const ImVec4& clip_rect, const char* text_begin, const char* text_end, float wrap_width, bool cpu_fine_clip)

{

// Align to be pixel perfect

float x = IM_TRUNC(pos.x);

float y = IM_TRUNC(pos.y);

if (y > clip_rect.w)

return;

if (!text_end)

text_end = text_begin + strlen(text_begin); // ImGui:: functions generally already provides a valid text_end, so this is merely to handle direct calls.

const float scale = size / FontSize;

const float line_height = FontSize * scale;

const float origin_x = x;

const bool word_wrap_enabled = (wrap_width > 0.0f);

// Fast-forward to first visible line

const char* s = text_begin;

if (y + line_height < clip_rect.y)

while (y + line_height < clip_rect.y && s < text_end)

{

const char* line_end = (const char*)memchr(s, '\n', text_end - s);

if (word_wrap_enabled)

{

// FIXME-OPT: This is not optimal as do first do a search for \n before calling CalcWordWrapPositionA().

// If the specs for CalcWordWrapPositionA() were reworked to optionally return on \n we could combine both.

// However it is still better than nothing performing the fast-forward!

s = CalcWordWrapPositionA(scale, s, line_end ? line_end : text_end, wrap_width);

s = CalcWordWrapNextLineStartA(s, text_end);

}

else

{

s = line_end ? line_end + 1 : text_end;

}

y += line_height;

}

// For large text, scan for the last visible line in order to avoid over-reserving in the call to PrimReserve()

// Note that very large horizontal line will still be affected by the issue (e.g. a one megabyte string buffer without a newline will likely crash atm)

if (text_end - s > 10000 && !word_wrap_enabled)

{

const char* s_end = s;

float y_end = y;

while (y_end < clip_rect.w && s_end < text_end)

{

s_end = (const char*)memchr(s_end, '\n', text_end - s_end);

s_end = s_end ? s_end + 1 : text_end;

y_end += line_height;

}

text_end = s_end;

}

if (s == text_end)

return;

// Reserve vertices for remaining worse case (over-reserving is useful and easily amortized)

const int vtx_count_max = (int)(text_end - s) * 4;

const int idx_count_max = (int)(text_end - s) * 6;

const int idx_expected_size = draw_list->IdxBuffer.Size + idx_count_max;

draw_list->PrimReserve(idx_count_max, vtx_count_max);

ImDrawVert* vtx_write = draw_list->_VtxWritePtr;

ImDrawIdx* idx_write = draw_list->_IdxWritePtr;

unsigned int vtx_index = draw_list->_VtxCurrentIdx;

const ImU32 col_untinted = col | ~IM_COL32_A_MASK;

const char* word_wrap_eol = NULL;

while (s < text_end)

{

if (word_wrap_enabled)

{

// Calculate how far we can render. Requires two passes on the string data but keeps the code simple and not intrusive for what's essentially an uncommon feature.

if (!word_wrap_eol)

word_wrap_eol = CalcWordWrapPositionA(scale, s, text_end, wrap_width - (x - origin_x));

if (s >= word_wrap_eol)

{

x = origin_x;

y += line_height;

if (y > clip_rect.w)

break; // break out of main loop

word_wrap_eol = NULL;

s = CalcWordWrapNextLineStartA(s, text_end); // Wrapping skips upcoming blanks

continue;

}

// Decode and advance source

unsigned int c = (unsigned int)*s;

if (c < 0x80)

s += 1;

else

s += ImTextCharFromUtf8(&c, s, text_end);

if (c < 32)

{

if (c == '\n')

{

x = origin_x;

y += line_height;

if (y > clip_rect.w)

break; // break out of main loop

continue;

}

if (c == '\r')

continue;

}

const ImFontGlyph* glyph = FindGlyph((ImWchar)c);

if (glyph == NULL)

continue;

float char_width = glyph->AdvanceX * scale;

if (glyph->Visible)

{

// We don't do a second finer clipping test on the Y axis as we've already skipped anything before clip_rect.y and exit once we pass clip_rect.w

float x1 = x + glyph->X0 * scale;

float x2 = x + glyph->X1 * scale;

float y1 = y + glyph->Y0 * scale;

float y2 = y + glyph->Y1 * scale;

if (x1 <= clip_rect.z && x2 >= clip_rect.x)

{

// Render a character

float u1 = glyph->U0;

float v1 = glyph->V0;

float u2 = glyph->U1;

float v2 = glyph->V1;

// CPU side clipping used to fit text in their frame when the frame is too small. Only does clipping for axis aligned quads.

if (cpu_fine_clip)

{

if (x1 < clip_rect.x)

{

u1 = u1 + (1.0f - (x2 - clip_rect.x) / (x2 - x1)) * (u2 - u1);

x1 = clip_rect.x;

}

if (y1 < clip_rect.y)

{

v1 = v1 + (1.0f - (y2 - clip_rect.y) / (y2 - y1)) * (v2 - v1);

y1 = clip_rect.y;

}

if (x2 > clip_rect.z)

{

u2 = u1 + ((clip_rect.z - x1) / (x2 - x1)) * (u2 - u1);

x2 = clip_rect.z;

}

if (y2 > clip_rect.w)

{

v2 = v1 + ((clip_rect.w - y1) / (y2 - y1)) * (v2 - v1);

y2 = clip_rect.w;

}

if (y1 >= y2)

{

x += char_width;

continue;

}

// Support for untinted glyphs

ImU32 glyph_col = glyph->Colored ? col_untinted : col;

// We are NOT calling PrimRectUV() here because non-inlined causes too much overhead in a debug builds. Inlined here:

{

vtx_write[0].pos.x = x1; vtx_write[0].pos.y = y1; vtx_write[0].col = glyph_col; vtx_write[0].uv.x = u1; vtx_write[0].uv.y = v1;

vtx_write[1].pos.x = x2; vtx_write[1].pos.y = y1; vtx_write[1].col = glyph_col; vtx_write[1].uv.x = u2; vtx_write[1].uv.y = v1;

vtx_write[2].pos.x = x2; vtx_write[2].pos.y = y2; vtx_write[2].col = glyph_col; vtx_write[2].uv.x = u2; vtx_write[2].uv.y = v2;

vtx_write[3].pos.x = x1; vtx_write[3].pos.y = y2; vtx_write[3].col = glyph_col; vtx_write[3].uv.x = u1; vtx_write[3].uv.y = v2;

idx_write[0] = (ImDrawIdx)(vtx_index); idx_write[1] = (ImDrawIdx)(vtx_index + 1); idx_write[2] = (ImDrawIdx)(vtx_index + 2);

idx_write[3] = (ImDrawIdx)(vtx_index); idx_write[4] = (ImDrawIdx)(vtx_index + 2); idx_write[5] = (ImDrawIdx)(vtx_index + 3);

vtx_write += 4;

vtx_index += 4;

idx_write += 6;

}

x += char_width;

}

// Give back unused vertices (clipped ones, blanks) ~ this is essentially a PrimUnreserve() action.

draw_list->VtxBuffer.Size = (int)(vtx_write - draw_list->VtxBuffer.Data); // Same as calling shrink()

draw_list->IdxBuffer.Size = (int)(idx_write - draw_list->IdxBuffer.Data);

draw_list->CmdBuffer[draw_list->CmdBuffer.Size - 1].ElemCount -= (idx_expected_size - draw_list->IdxBuffer.Size);

draw_list->_VtxWritePtr = vtx_write;

draw_list->_IdxWritePtr = idx_write;

draw_list->_VtxCurrentIdx = vtx_index;

}

//-----------------------------------------------------------------------------

// [SECTION] ImGui Internal Render Helpers

//-----------------------------------------------------------------------------

// Vaguely redesigned to stop accessing ImGui global state:

// - RenderArrow()

// - RenderBullet()

// - RenderCheckMark()

// - RenderArrowPointingAt()

// - RenderRectFilledRangeH()

// - RenderRectFilledWithHole()

//-----------------------------------------------------------------------------

// Function in need of a redesign (legacy mess)

// - RenderColorRectWithAlphaCheckerboard()

//-----------------------------------------------------------------------------

// Render an arrow aimed to be aligned with text (p_min is a position in the same space text would be positioned). To e.g. denote expanded/collapsed state

void ImGui::RenderArrow(ImDrawList* draw_list, ImVec2 pos, ImU32 col, ImGuiDir dir, float scale)

{

const float h = draw_list->_Data->FontSize * 1.00f;

float r = h * 0.40f * scale;

ImVec2 center = pos + ImVec2(h * 0.50f, h * 0.50f * scale);

ImVec2 a, b, c;

switch (dir)

{

case ImGuiDir_Up:

case ImGuiDir_Down:

if (dir == ImGuiDir_Up) r = -r;

a = ImVec2(+0.000f, +0.750f) * r;

b = ImVec2(-0.866f, -0.750f) * r;

c = ImVec2(+0.866f, -0.750f) * r;

break;

case ImGuiDir_Left:

case ImGuiDir_Right:

if (dir == ImGuiDir_Left) r = -r;

a = ImVec2(+0.750f, +0.000f) * r;

b = ImVec2(-0.750f, +0.866f) * r;

c = ImVec2(-0.750f, -0.866f) * r;

break;

case ImGuiDir_None:

case ImGuiDir_COUNT:

IM_ASSERT(0);

break;

}

draw_list->AddTriangleFilled(center + a, center + b, center + c, col);

}

void ImGui::RenderBullet(ImDrawList* draw_list, ImVec2 pos, ImU32 col)

{

// FIXME-OPT: This should be baked in font.

draw_list->AddCircleFilled(pos, draw_list->_Data->FontSize * 0.20f, col, 8);

}

void ImGui::RenderCheckMark(ImDrawList* draw_list, ImVec2 pos, ImU32 col, float sz)

{

float thickness = ImMax(sz / 5.0f, 1.0f);

sz -= thickness * 0.5f;

pos += ImVec2(thickness * 0.25f, thickness * 0.25f);

float third = sz / 3.0f;

float bx = pos.x + third;

float by = pos.y + sz - third * 0.5f;

draw_list->PathLineTo(ImVec2(bx - third, by - third));

draw_list->PathLineTo(ImVec2(bx, by));

draw_list->PathLineTo(ImVec2(bx + third * 2.0f, by - third * 2.0f));

draw_list->PathStroke(col, 0, thickness);

}

// Render an arrow. 'pos' is position of the arrow tip. half_sz.x is length from base to tip. half_sz.y is length on each side.

void ImGui::RenderArrowPointingAt(ImDrawList* draw_list, ImVec2 pos, ImVec2 half_sz, ImGuiDir direction, ImU32 col)

{

switch (direction)

{

case ImGuiDir_Left: draw_list->AddTriangleFilled(ImVec2(pos.x + half_sz.x, pos.y - half_sz.y), ImVec2(pos.x + half_sz.x, pos.y + half_sz.y), pos, col); return;

case ImGuiDir_Right: draw_list->AddTriangleFilled(ImVec2(pos.x - half_sz.x, pos.y + half_sz.y), ImVec2(pos.x - half_sz.x, pos.y - half_sz.y), pos, col); return;

case ImGuiDir_Up: draw_list->AddTriangleFilled(ImVec2(pos.x + half_sz.x, pos.y + half_sz.y), ImVec2(pos.x - half_sz.x, pos.y + half_sz.y), pos, col); return;

case ImGuiDir_Down: draw_list->AddTriangleFilled(ImVec2(pos.x - half_sz.x, pos.y - half_sz.y), ImVec2(pos.x + half_sz.x, pos.y - half_sz.y), pos, col); return;

case ImGuiDir_None: case ImGuiDir_COUNT: break; // Fix warnings

}

static inline float ImAcos01(float x)

{

if (x <= 0.0f) return IM_PI * 0.5f;

if (x >= 1.0f) return 0.0f;

return ImAcos(x);

//return (-0.69813170079773212f * x * x - 0.87266462599716477f) * x + 1.5707963267948966f; // Cheap approximation, may be enough for what we do.

}

// FIXME: Cleanup and move code to ImDrawList.

void ImGui::RenderRectFilledRangeH(ImDrawList* draw_list, const ImRect& rect, ImU32 col, float x_start_norm, float x_end_norm, float rounding)

{

if (x_end_norm == x_start_norm)

return;

if (x_start_norm > x_end_norm)

ImSwap(x_start_norm, x_end_norm);

ImVec2 p0 = ImVec2(ImLerp(rect.Min.x, rect.Max.x, x_start_norm), rect.Min.y);

ImVec2 p1 = ImVec2(ImLerp(rect.Min.x, rect.Max.x, x_end_norm), rect.Max.y);

if (rounding == 0.0f)

{

draw_list->AddRectFilled(p0, p1, col, 0.0f);

return;

}

rounding = ImClamp(ImMin((rect.Max.x - rect.Min.x) * 0.5f, (rect.Max.y - rect.Min.y) * 0.5f) - 1.0f, 0.0f, rounding);

const float inv_rounding = 1.0f / rounding;

const float arc0_b = ImAcos01(1.0f - (p0.x - rect.Min.x) * inv_rounding);

const float arc0_e = ImAcos01(1.0f - (p1.x - rect.Min.x) * inv_rounding);

const float half_pi = IM_PI * 0.5f; // We will == compare to this because we know this is the exact value ImAcos01 can return.

const float x0 = ImMax(p0.x, rect.Min.x + rounding);

if (arc0_b == arc0_e)

{

draw_list->PathLineTo(ImVec2(x0, p1.y));

draw_list->PathLineTo(ImVec2(x0, p0.y));

}

else if (arc0_b == 0.0f && arc0_e == half_pi)

{

draw_list->PathArcToFast(ImVec2(x0, p1.y - rounding), rounding, 3, 6); // BL

draw_list->PathArcToFast(ImVec2(x0, p0.y + rounding), rounding, 6, 9); // TR

}

else

{

draw_list->PathArcTo(ImVec2(x0, p1.y - rounding), rounding, IM_PI - arc0_e, IM_PI - arc0_b); // BL

draw_list->PathArcTo(ImVec2(x0, p0.y + rounding), rounding, IM_PI + arc0_b, IM_PI + arc0_e); // TR

}

if (p1.x > rect.Min.x + rounding)

{

const float arc1_b = ImAcos01(1.0f - (rect.Max.x - p1.x) * inv_rounding);

const float arc1_e = ImAcos01(1.0f - (rect.Max.x - p0.x) * inv_rounding);

const float x1 = ImMin(p1.x, rect.Max.x - rounding);

if (arc1_b == arc1_e)

{

draw_list->PathLineTo(ImVec2(x1, p0.y));

draw_list->PathLineTo(ImVec2(x1, p1.y));

}

else if (arc1_b == 0.0f && arc1_e == half_pi)

{

draw_list->PathArcToFast(ImVec2(x1, p0.y + rounding), rounding, 9, 12); // TR

draw_list->PathArcToFast(ImVec2(x1, p1.y - rounding), rounding, 0, 3); // BR

}

else

{

draw_list->PathArcTo(ImVec2(x1, p0.y + rounding), rounding, -arc1_e, -arc1_b); // TR

draw_list->PathArcTo(ImVec2(x1, p1.y - rounding), rounding, +arc1_b, +arc1_e); // BR

}

draw_list->PathFillConvex(col);

}

void ImGui::RenderRectFilledWithHole(ImDrawList* draw_list, const ImRect& outer, const ImRect& inner, ImU32 col, float rounding)

{

const bool fill_L = (inner.Min.x > outer.Min.x);

const bool fill_R = (inner.Max.x < outer.Max.x);

const bool fill_U = (inner.Min.y > outer.Min.y);

const bool fill_D = (inner.Max.y < outer.Max.y);

if (fill_L) draw_list->AddRectFilled(ImVec2(outer.Min.x, inner.Min.y), ImVec2(inner.Min.x, inner.Max.y), col, rounding, ImDrawFlags_RoundCornersNone | (fill_U ? 0 : ImDrawFlags_RoundCornersTopLeft) | (fill_D ? 0 : ImDrawFlags_RoundCornersBottomLeft));

if (fill_R) draw_list->AddRectFilled(ImVec2(inner.Max.x, inner.Min.y), ImVec2(outer.Max.x, inner.Max.y), col, rounding, ImDrawFlags_RoundCornersNone | (fill_U ? 0 : ImDrawFlags_RoundCornersTopRight) | (fill_D ? 0 : ImDrawFlags_RoundCornersBottomRight));

if (fill_U) draw_list->AddRectFilled(ImVec2(inner.Min.x, outer.Min.y), ImVec2(inner.Max.x, inner.Min.y), col, rounding, ImDrawFlags_RoundCornersNone | (fill_L ? 0 : ImDrawFlags_RoundCornersTopLeft) | (fill_R ? 0 : ImDrawFlags_RoundCornersTopRight));

if (fill_D) draw_list->AddRectFilled(ImVec2(inner.Min.x, inner.Max.y), ImVec2(inner.Max.x, outer.Max.y), col, rounding, ImDrawFlags_RoundCornersNone | (fill_L ? 0 : ImDrawFlags_RoundCornersBottomLeft) | (fill_R ? 0 : ImDrawFlags_RoundCornersBottomRight));

if (fill_L && fill_U) draw_list->AddRectFilled(ImVec2(outer.Min.x, outer.Min.y), ImVec2(inner.Min.x, inner.Min.y), col, rounding, ImDrawFlags_RoundCornersTopLeft);

if (fill_R && fill_U) draw_list->AddRectFilled(ImVec2(inner.Max.x, outer.Min.y), ImVec2(outer.Max.x, inner.Min.y), col, rounding, ImDrawFlags_RoundCornersTopRight);

if (fill_L && fill_D) draw_list->AddRectFilled(ImVec2(outer.Min.x, inner.Max.y), ImVec2(inner.Min.x, outer.Max.y), col, rounding, ImDrawFlags_RoundCornersBottomLeft);

if (fill_R && fill_D) draw_list->AddRectFilled(ImVec2(inner.Max.x, inner.Max.y), ImVec2(outer.Max.x, outer.Max.y), col, rounding, ImDrawFlags_RoundCornersBottomRight);

}

// Helper for ColorPicker4()

// NB: This is rather brittle and will show artifact when rounding this enabled if rounded corners overlap multiple cells. Caller currently responsible for avoiding that.

// Spent a non reasonable amount of time trying to getting this right for ColorButton with rounding+anti-aliasing+ImGuiColorEditFlags_HalfAlphaPreview flag + various grid sizes and offsets, and eventually gave up... probably more reasonable to disable rounding altogether.

// FIXME: uses ImGui::GetColorU32

void ImGui::RenderColorRectWithAlphaCheckerboard(ImDrawList* draw_list, ImVec2 p_min, ImVec2 p_max, ImU32 col, float grid_step, ImVec2 grid_off, float rounding, ImDrawFlags flags)

{

if ((flags & ImDrawFlags_RoundCornersMask_) == 0)

flags = ImDrawFlags_RoundCornersDefault_;

if (((col & IM_COL32_A_MASK) >> IM_COL32_A_SHIFT) < 0xFF)

{

ImU32 col_bg1 = GetColorU32(ImAlphaBlendColors(IM_COL32(204, 204, 204, 255), col));

ImU32 col_bg2 = GetColorU32(ImAlphaBlendColors(IM_COL32(128, 128, 128, 255), col));

draw_list->AddRectFilled(p_min, p_max, col_bg1, rounding, flags);

int yi = 0;

for (float y = p_min.y + grid_off.y; y < p_max.y; y += grid_step, yi++)

{

float y1 = ImClamp(y, p_min.y, p_max.y), y2 = ImMin(y + grid_step, p_max.y);

if (y2 <= y1)

continue;

for (float x = p_min.x + grid_off.x + (yi & 1) * grid_step; x < p_max.x; x += grid_step * 2.0f)

{

float x1 = ImClamp(x, p_min.x, p_max.x), x2 = ImMin(x + grid_step, p_max.x);

if (x2 <= x1)

continue;

ImDrawFlags cell_flags = ImDrawFlags_RoundCornersNone;

if (y1 <= p_min.y) { if (x1 <= p_min.x) cell_flags |= ImDrawFlags_RoundCornersTopLeft; if (x2 >= p_max.x) cell_flags |= ImDrawFlags_RoundCornersTopRight; }

if (y2 >= p_max.y) { if (x1 <= p_min.x) cell_flags |= ImDrawFlags_RoundCornersBottomLeft; if (x2 >= p_max.x) cell_flags |= ImDrawFlags_RoundCornersBottomRight; }

// Combine flags

cell_flags = (flags == ImDrawFlags_RoundCornersNone || cell_flags == ImDrawFlags_RoundCornersNone) ? ImDrawFlags_RoundCornersNone : (cell_flags & flags);

draw_list->AddRectFilled(ImVec2(x1, y1), ImVec2(x2, y2), col_bg2, rounding, cell_flags);

}

else

{

draw_list->AddRectFilled(p_min, p_max, col, rounding, flags);

}

//-----------------------------------------------------------------------------

// [SECTION] Decompression code

//-----------------------------------------------------------------------------

// Compressed with stb_compress() then converted to a C array and encoded as base85.

// Use the program in misc/fonts/binary_to_compressed_c.cpp to create the array from a TTF file.

// The purpose of encoding as base85 instead of "0x00,0x01,..." style is only save on _source code_ size.

// Decompression from stb.h (public domain) by Sean Barrett https://github.com/nothings/stb/blob/master/stb.h

//-----------------------------------------------------------------------------

static unsigned int stb_decompress_length(const unsigned char *input)

{

return (input[8] << 24) + (input[9] << 16) + (input[10] << 8) + input[11];

}

static unsigned char *stb__barrier_out_e, *stb__barrier_out_b;

static const unsigned char *stb__barrier_in_b;

static unsigned char *stb__dout;

static void stb__match(const unsigned char *data, unsigned int length)

{

// INVERSE of memmove... write each byte before copying the next...

IM_ASSERT(stb__dout + length <= stb__barrier_out_e);

if (stb__dout + length > stb__barrier_out_e) { stb__dout += length; return; }

if (data < stb__barrier_out_b) { stb__dout = stb__barrier_out_e+1; return; }

while (length--) *stb__dout++ = *data++;

}

static void stb__lit(const unsigned char *data, unsigned int length)

{

IM_ASSERT(stb__dout + length <= stb__barrier_out_e);

if (stb__dout + length > stb__barrier_out_e) { stb__dout += length; return; }

if (data < stb__barrier_in_b) { stb__dout = stb__barrier_out_e+1; return; }

memcpy(stb__dout, data, length);

stb__dout += length;

}

#define stb__in2(x) ((i[x] << 8) + i[(x)+1])

#define stb__in3(x) ((i[x] << 16) + stb__in2((x)+1))

#define stb__in4(x) ((i[x] << 24) + stb__in3((x)+1))

static const unsigned char *stb_decompress_token(const unsigned char *i)

{

if (*i >= 0x20) { // use fewer if's for cases that expand small

if (*i >= 0x80) stb__match(stb__dout-i[1]-1, i[0] - 0x80 + 1), i += 2;

else if (*i >= 0x40) stb__match(stb__dout-(stb__in2(0) - 0x4000 + 1), i[2]+1), i += 3;

else /* *i >= 0x20 */ stb__lit(i+1, i[0] - 0x20 + 1), i += 1 + (i[0] - 0x20 + 1);

} else { // more ifs for cases that expand large, since overhead is amortized

if (*i >= 0x18) stb__match(stb__dout-(stb__in3(0) - 0x180000 + 1), i[3]+1), i += 4;

else if (*i >= 0x10) stb__match(stb__dout-(stb__in3(0) - 0x100000 + 1), stb__in2(3)+1), i += 5;

else if (*i >= 0x08) stb__lit(i+2, stb__in2(0) - 0x0800 + 1), i += 2 + (stb__in2(0) - 0x0800 + 1);

else if (*i == 0x07) stb__lit(i+3, stb__in2(1) + 1), i += 3 + (stb__in2(1) + 1);

else if (*i == 0x06) stb__match(stb__dout-(stb__in3(1)+1), i[4]+1), i += 5;

else if (*i == 0x04) stb__match(stb__dout-(stb__in3(1)+1), stb__in2(4)+1), i += 6;

}

return i;

}

static unsigned int stb_adler32(unsigned int adler32, unsigned char *buffer, unsigned int buflen)

{

const unsigned long ADLER_MOD = 65521;

unsigned long s1 = adler32 & 0xffff, s2 = adler32 >> 16;

unsigned long blocklen = buflen % 5552;

unsigned long i;

while (buflen) {

for (i=0; i + 7 < blocklen; i += 8) {

s1 += buffer[0], s2 += s1;

s1 += buffer[1], s2 += s1;

s1 += buffer[2], s2 += s1;

s1 += buffer[3], s2 += s1;

s1 += buffer[4], s2 += s1;

s1 += buffer[5], s2 += s1;

s1 += buffer[6], s2 += s1;

s1 += buffer[7], s2 += s1;

buffer += 8;

}

for (; i < blocklen; ++i)

s1 += *buffer++, s2 += s1;

s1 %= ADLER_MOD, s2 %= ADLER_MOD;

buflen -= blocklen;

blocklen = 5552;

}

return (unsigned int)(s2 << 16) + (unsigned int)s1;

}

static unsigned int stb_decompress(unsigned char *output, const unsigned char *i, unsigned int /*length*/)

{

if (stb__in4(0) != 0x57bC0000) return 0;

if (stb__in4(4) != 0) return 0; // error! stream is > 4GB

const unsigned int olen = stb_decompress_length(i);

stb__barrier_in_b = i;

stb__barrier_out_e = output + olen;

stb__barrier_out_b = output;

i += 16;

stb__dout = output;

for (;;) {

const unsigned char *old_i = i;

i = stb_decompress_token(i);

if (i == old_i) {

if (*i == 0x05 && i[1] == 0xfa) {

IM_ASSERT(stb__dout == output + olen);

if (stb__dout != output + olen) return 0;

if (stb_adler32(1, output, olen) != (unsigned int) stb__in4(2))

return 0;

return olen;

} else {

IM_ASSERT(0); /* NOTREACHED */

return 0;

}

IM_ASSERT(stb__dout <= output + olen);

if (stb__dout > output + olen)

return 0;

}

//-----------------------------------------------------------------------------

// [SECTION] Default font data (ProggyClean.ttf)

//-----------------------------------------------------------------------------

// ProggyClean.ttf

// MIT license (see License.txt in http://www.proggyfonts.net/index.php?menu=download)

// Download and more information at http://www.proggyfonts.net or http://upperboundsinteractive.com/fonts.php

//-----------------------------------------------------------------------------

#ifndef IMGUI_DISABLE_DEFAULT_FONT

// File: 'ProggyClean.ttf' (41208 bytes)

// Exported using binary_to_compressed_c.exe -u8 "ProggyClean.ttf" proggy_clean_ttf#endif // #ifndef IMGUI_DISABLE_DEFAULT_FONT

#endif // #ifndef IMGUI_DISABLE