1
vote
1answer
551 views

XNA Per-Polygon Collision Check

I'm working on a project in XNA for WP7 with a low-poly environment, my problem is I need to setup a working per-polygon collision check between 2 or more 3d meshes. I've checked tons of tutorials ...
5
votes
1answer
2k views

Finding if a point is inside of a mesh (Point-in-polyhedron)

How can I find if a point (Vector3) is inside of a mesh? Would this work for both concave and convex objects? I read somewhere that if you raycast in both directions of every axis (X, -X, Y, -Y, Z, ...
2
votes
2answers
491 views

Best way to traverse triangles in a mesh

I'm implementing non-projective decals. As described in many places (ie: lengyel in the gpg2) I first need to detect all triangles that lie within some sort of frustum. Besides obvious brute-force ...