/// <summary>
/// Performs an occlusion test against the specified ray.
/// </summary>
public unsafe Boolean Occludes <Ray>(Ray ray, float near = 0, float far = float.PositiveInfinity, float time = 0) where Ray : IEmbreeRay
{
#if DEBUG
if (!traversalFlags.HasFlag(TraversalFlags.Single))
{
throw new InvalidOperationException("Traversal flags forbid single-ray traversal");
}
#endif
var o = ray.Origin;
var d = ray.Direction;
var p = RTC.RayInterop.Packet1;
p->orgX = o.X; p->orgY = o.Y; p->orgZ = o.Z;
p->dirX = d.X; p->dirY = d.Y; p->dirZ = d.Z;
p->geomID = RTC.InvalidGeometryID;
p->primID = RTC.InvalidGeometryID;
p->instID = RTC.InvalidGeometryID;
p->time = time;
p->tnear = near;
p->tfar = far;
RTC.Occluded1(scenePtr, p);
return(p->geomID == 0);
}