void Renderer::ApplyCamera(const Camera& cam, IContext& c){
Rect<unsigned int> r = cam.GetRect();
glViewport(r.x, r.y, r.width, r.height);
glEnable(GL_SCISSOR_TEST);
glScissor(r.x, r.y, r.width, r.height);
CHECK_GL_ERROR();
Color bg = cam.BackgroundColor();
glClearColor(bg.Get(0), bg.Get(1), bg.Get(2), bg.Get(3));
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glDisable(GL_SCISSOR_TEST);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
CHECK_GL_ERROR();
glMultMatrixf(cam.GetProjectionMatrix().GetData());
CHECK_GL_ERROR();
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
// Apply camera transformation
Matrix<4,4,float> camTrans = cam.GetTransformation()->GetAccumulatedMatrix();
if (!Invert(camTrans))
std::cout << "Camera matrix could not be inverted.\n";
glMultMatrixf(camTrans.GetData());
glEnable(GL_DEPTH_TEST);
}
