Non Affine, Tech Art, Transformation Matrices, Unity3d, Shaders.
through the transformation. Mathematically, the determinant of your matrix shouldn’t switch signs if multiplied with our matrix. I find it easier to just visualize it though. If we are flipping the x axis from (1,0,0) to (-1,0,-1) then we have to flip the y to (0, -1, 0) to ensure we remain in a