No FaceAttribute for primitive collisions?

[eigen]

Hey.

I was implementing different surface materials for different faces of one body and all I working well. I can cast a ray and detect if I hit a metal or wood part of the body. Great! But it's not working when the ray hits a body with collision primitive, boxes in my case.

Code: Select all

      NewtonCollisionRayCast(
        NewtonBodyGetCollision(pickedBody),
        lineStart,
        lineEnd,
        normals_array,
        &faceAttribute);


With primitives, the faceAttribute variable contains garbage. I looked and I couldn't find a NewtonCollisionSetFaceAttribute or similar. Any ideas? UserID for collisions is already in use so I cant use that.

[Julio Jerez]

face atribute only apply to poygonal face collisions.
the convex objects do not have faces, they are solid primitives