timkrause2 / image-transformations Goto Github PK

There's a glitch in the image with the following transform and theta set to exactly 90.0 degrees
glm::vec2 A((float)(srcImage_argb.width()-1)/2, -(float)(srcImage_argb.height()-1)/2); glm::mat3 M = glm::translate(glm::mat3(1.0f),A); M = glm::rotate(M, theta); M = glm::scale(M,glm::vec2(1.0f/3.0f,3.0f)); M = glm::rotate(M,-theta); M = glm::translate(M, -A); glm::mat3 M_inv = glm::inverse(M);