Gl - option, spherical coordinates and axis

Yes, TGLSurfacePainter doesn’t draw any axes with sph/pol/cyl options (what should I draw? angles?).
I’m not sure, where is your TAxis3D object with gl option :slight_smile: But even if it’s draw on top of GL scene, it will be incorrect, because in openGL we have our own coordinate system, in a pad we have TView to convert 3d to 2d, they works differently.