/**
* The simplest perspective projection matrix that makes inverting the complete world to screen
* matrix easy.
*/
private static Matrix createProjectionMatrix() {
return Matrix.create4x4(
1.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 1.0, 0.0);
}
/**
* Constructs a 4x4 matrix representing the complete transform from real world coordinates to
* screen space coordinates.
*/
Matrix toProjectionMatrix() {
Matrix transform = Matrix.create4x4(position.negate(), rotation);
Matrix result = Matrix.multiply(createProjectionMatrix(), transform);
return result;
}