public unsafe Intersection Trace(Point3D from, Vector direction, float near = 0, float far = float.PositiveInfinity, float time = 0)
{
var p = RTC.RayInterop.Packet1;
p->orgX = from.X; p->orgY = from.Y; p->orgZ = from.Z;
p->dirX = direction.X; p->dirY = direction.Y; p->dirZ = direction.Z;
p->geomID = RTC.InvalidGeometryID;
p->primID = RTC.InvalidGeometryID;
p->instID = RTC.InvalidGeometryID;
p->time = time;
p->tnear = near;
p->tfar = far;
RTC.Intersect1(scenePtr, p);
if (p->geomID == RTC.InvalidGeometryID)
{
return(null);
}
else
{
int geomId = (int)p->geomID;
IObj obj = null;
if (geomId < this.Scene.Objects.Count)
{
obj = this.Scene.Objects[(int)p->geomID];
}
else
{
obj = geometryIdLights[geomId];
}
var face = obj.Faces[(int)p->primID];
float distance = p->tfar;
var dr = direction * distance;
var r = from + dr;
return(new Intersection(obj, face, distance, r));
}
}
