Creates a scene query operation for finding scene objects that intersect with the given ray.
The query result distance (see ISceneQueryResult.Distance) is the distance between the projection of the pick result onto the given ray opt and its origin.
The following query results are generated in a separate group when the terrain is hit:
Additional query results may be generated by ISceneObject.QueryRay.
Creates a scene query operation for finding terrain points, scene objects or 2D overlays for the given screen point.