Hello,
Suppose I set an orthog projection :
GL.Ortho(0, 800, 800, 0, -1, 100);
I can then read back the projection matrix using:
GL.GetFloat(GetPName.ProjectionMatrix,…);
Which gives me the matrix:
(5.086263E-06, 0, 0, 0)
(0, 6.510417E-06, 0, 0)
(0, 0, 0.0003921184, 0)
(-1.043701, 0.9973958, -0.9607882, 1)
My question is, how do I get back to my “left, right, top, bottom” parameters from this matrix?
Many thanks,
James L.