Hi!

I've got polygons way above the ground plane that I want to project on a terrain surface. The terrain is also way above the ground plane. Some of the polygons points are projected on the terrain (good) but some get projected onto the ground plane.

How can I tell the RAY sop to not project onto the ground plane? …why does it consider the ground plane as a surface?!

-Olivier

**by ground plane, I mean the viewport grid (Y = 0)

The ray sop doesn't use a ground plane unless you provide one. Might the terrain be at zero in some places?