[ODE] dGeomRaySet

[Daniel K. O.]

I'm having problems trying to use dGeomRaySet to set the ray start and 
direction. It does absolutely nothing.
(ODE 0.6 here)

This is how I'm trying to use it:

        ray = dCreateRay(space, 1);
        |dGeomSetBody|(ray, body);

        dGeomRaySet(raio, x, y, 0, dx, dy, 0); // x=1, y=0, dx=1, dy=0, 
point it to x axis

This does nothing; the ray start stays at (0,0,0), pointing to the z axis.

But if I use this instead of dGeomRaySet:

        dMatrix3 rot;
        dRFromAxisAndAngle(rot, 0, 1, 0, M_PI/2); // rotate z axis over x
        dGeomSetOffsetRotation(ray, rot);
        dGeomSetOffsetPosition(ray, x, y, 0);

It works. So, what am I doing wrong with dGeomRaySet?


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Daniel K. O.