Hey guys,

I'm having a hardest time drawing the XYZ-axis in the corner of my screen. I'd like it to stay in the corner as I rotate the scene and zoom in/out. I tried getting the OpenGL space coordinates from the Window coordinates and then drawing my axis there, but this is giving me some strange results (can't control the length of axis, flickering when rotating, etc).

Any idea how I should approach this problem?

Thanks.