Tests if a ray intersects the lateral planes of a sides-only frustum, using a slab test over the planes, skipping near and far. A ray that starts inside the sides always intersects.
The sides-only frustum
Ray origin
Ray direction (need not be normalized)
True if the ray intersects the frustum's sides
Tests if a ray intersects the lateral planes of a sides-only frustum, using a slab test over the planes, skipping near and far. A ray that starts inside the sides always intersects.