Chanwoo enghqii

Full time programmer, Part time traveler.

enghqii / main.lua

Last active August 29, 2015 14:05

Isometric coord to Descartes coord (running on love2D engine)

	-- https://github.com/davidm/lua-matrix/blob/master/lua/matrix.lua
	local matrix = require 'matrix'

	-- Origin x,y (Screen coord)
	Ix0, Iy0 = 93, 329; -- Isometric
	Dx0, Dy0 = 450, 329; -- Descartes

	-- invert y axis, move to Dx0, Dy0
	descartesToScreenMatrix = (matrix{{1, 0, Dx0}, {0, 1, Dy0}, {0, 0, 1}} * matrix{{1, 0, 0}, {0, -1, 0}, {0, 0, 1}})
	-- Basis Vector I is (sqrt(3)/2, -1/2), J is (0, 1)