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Jul 24th, 2021

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local pers = peripheral.wrap("back")
local c = pers.canvas()
c.clear()
local rgb = require("cRGB")
local cam,campos,offset,rotationZ,rotationX,rotationY,projection,projected,matrix = {},{},{},{},{},{},{},{},{}
local width,height = c.getSize()
local scale = 1
local matrix = {{1,0,0},{0,1,0}}
local function matmul(m1, m2)
if #m1[1] ~= #m2 then
error("Columns m1 must match rows m2",2)
return nil
end
local result = {}
for i = 1, #m1 do
result[i] = {}
for j = 1, #m2[1] do
local sum = 0
for k = 1, #m2 do
sum = sum + (m1[i][k] * m2[k][j])
end
result[i][j] = sum
end
end
return result
end
local function drawPoint(x,y)
local rect = c.addDot({(x*scale)+(width * 0.5),(y*scale)+(height * 0.5)})
rect.setColor(rgb.conv(colors.red))
end
local points = {
{ {5},{-5},{5}},
{ {5},{5},{5}},
{ {-5},{5},{5}},
{ {-5},{-5},{5}},
{ {5},{-5},{-5}},
{ {5},{5},{-5}},
{ {-5},{5},{-5}},
{ {-5},{-5},{-5}}
}
local angle = 0
local results = {}
local rotation = {
{ math.cos(angle), -math.sin(angle) },
{ math.sin(angle), math.cos(angle) }
}
while true do
os.sleep(0.1)
c.clear()
for i=1,#points do
results[i] = matmul(rotation, points[i])
results[i] = matmul(matrix, points[i])
drawpoints(results[i][1][1], results[i][2][1])
end
end

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