The Viewing Frustum The frustum is like a pyramid lying on its side with the tip clipped off. Everything between the near and far planes is the viewing area.

Image courtesy Next Reality, Magic Leap. In the documentation, the company also reportedly provides a few informal examples of its viewing frustum: At 40-inches (~1m), the viewing window is ...

However, I thought that the view frustum was a pyramid, and so perspective projection would shrink things as they drifted away from the camera (and thus, the front of the frustum).

Frustum tracing means that the primitives of occluding objects are ray-traced from the light’s point of view to form a shadow on the receiving surfaces. It is a form of ray tracing and, as such ...

Conversely, if one or more of the frustum corners are in the bbox then, again, there is an intersection.<BR><BR>Things start to get a little hairy when neither of the previous two cases occur.