View Full Version : Drawing a 3-D grid

03-30-2000, 10:34 AM
I want to draw a 3-D grid composed of cubes to improve the perception of perspective and distance.

I tried to create a grid using large planes drawn as GL_QUADS. The problem with this method is that the planes are not always clipped properly by the frustum -they are often clipped irregularly in a manner that causes portions of plane not to be drawn.

Why is the clipping inconsistent?
What better way is there to draw a 3D grid?

04-01-2000, 08:00 AM
does your grid extend in two or three dimensions?

about the clipping... i never had problems with that. probably what you see are the effects of a depth buffer not well set.

try to increase the near clipping plane when you call gluPerspective() (or the function you are using)

also, try to decrease the far clipping plane.