46 lines
1.6 KiB
Plaintext
46 lines
1.6 KiB
Plaintext
|
// Script assets have changed for v2.3.0 see
|
||
|
|
// https://help.yoyogames.com/hc/en-us/articles/360005277377 for more information
|
||
|
|
/// @description convert_2d_to_3d(x, y, view_mat, proj_mat)
|
||
|
|
/// @param x
|
||
|
|
/// @param y
|
||
|
|
/// @param view_mat
|
||
|
|
/// @param proj_mat
|
||
|
|
/*
|
||
|
|
Transforms a 2D coordinate (in window space) to a 3D vector.
|
||
|
|
Returns an array of the following format:
|
||
|
|
[dx, dy, dz, ox, oy, oz]
|
||
|
|
where [dx, dy, dz] is the direction vector and [ox, oy, oz] is the origin of the ray.
|
||
|
|
Works for both orthographic and perspective projections.
|
||
|
|
Script created by TheSnidr
|
||
|
|
(slightly modified by @dragonitespam)
|
||
|
|
*/
|
||
|
|
function c_2dto3d(_x,_y,V = ARTICULATOR.getView(), P = ARTICULATOR.getProj()){
|
||
|
|
var mx = 2 * (_x / window_get_width() - .5) / P[0];
|
||
|
|
var my = 2 * (_y / window_get_height() - .5) / P[5];
|
||
|
|
var camX = - (V[12] * V[0] + V[13] * V[1] + V[14] * V[2]);
|
||
|
|
var camY = - (V[12] * V[4] + V[13] * V[5] + V[14] * V[6]);
|
||
|
|
var camZ = - (V[12] * V[8] + V[13] * V[9] + V[14] * V[10]);
|
||
|
|
var theVar;
|
||
|
|
if (P[15] == 0)
|
||
|
|
{ //This is a perspective projection
|
||
|
|
theVar = [V[2] + mx * V[0] + my * V[1],
|
||
|
|
V[6] + mx * V[4] + my * V[5],
|
||
|
|
V[10] + mx * V[8] + my * V[9],
|
||
|
|
camX,
|
||
|
|
camY,
|
||
|
|
camZ];
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{ //This is an ortho projection
|
||
|
|
theVar = [V[2],
|
||
|
|
V[6],
|
||
|
|
V[10],
|
||
|
|
camX + mx * V[0] + my * V[1],
|
||
|
|
camY + mx * V[4] + my * V[5],
|
||
|
|
camZ + mx * V[8] + my * V[9]];
|
||
|
|
}
|
||
|
|
var s2w = theVar;
|
||
|
|
var fx = s2w[0] * s2w[5] / -s2w[2] + s2w[3];
|
||
|
|
var fy = s2w[1] * s2w[5] / -s2w[2] + s2w[4];
|
||
|
|
return {x:fx,y:fy};
|
||
|
|
}
|