local originalSize = 1000
local halfSqrt3 = 0.5*3^0.5
local trianglesToDraw = {}

local function insertTriangle(pos, size, triangleType)
  pos = pos or Vector2()
  size = size or originalSize

  local visibleSize = Vector2(love.graphics.getDimensions())+size
 
  local modifiedPosition = pos + size/2 

  if (modifiedPosition.x > 0 and modifiedPosition.x < visibleSize.x and modifiedPosition.y > 0 and modifiedPosition.y < visibleSize.y) then
    table.insert(trianglesToDraw, {
      pos = pos,   size = size,
      triangleType = triangleType or "full"
    })
  end
end

local function drawTriangle(pos, size, triangleType)
  if size <= 6.5 then return end
  local h = size * halfSqrt3
  local halfSize = size/2
  local halfH = h/2

  if triangleType == "full" then
    love.graphics.line(pos.x, pos.y-halfH, pos.x+halfSize, pos.y+halfH, pos.x-halfSize, pos.y+halfH, pos.x, pos.y-halfH)
  elseif triangleType == "top" then
    love.graphics.line(pos.x+halfSize, pos.y+halfH, pos.x-halfSize, pos.y+halfH)
  elseif triangleType == "left" then
    love.graphics.line(pos.x, pos.y-halfH, pos.x+halfSize, pos.y+halfH)
  elseif triangleType == "right" then
    love.graphics.line(pos.x-halfSize, pos.y+halfH, pos.x, pos.y-halfH)
  end

  insertTriangle(pos + Vector2( 0     , -h/4), halfSize, "top")
  insertTriangle(pos + Vector2( size/4,  h/4), halfSize, "right")
  insertTriangle(pos + Vector2(-size/4,  h/4), halfSize, "left")
end

return function(offset, scale)
  trianglesToDraw = {}
  insertTriangle(-offset/scale, originalSize/scale)

  while #trianglesToDraw > 0 do
    local triangle = table.remove(trianglesToDraw)
    drawTriangle(triangle.pos, triangle.size, triangle.triangleType)
  end
end