// Gets the hit testing line/ray specified as an origin and direction in
// the current local space.
internal void GetLocalLine(out Point3D origin, out Vector3D direction)
{
origin = _origin;
direction = _direction;
bool isRay = true;
if (HasWorldTransformMatrix)
{
LineUtil.Transform(WorldTransformMatrix, ref origin, ref direction, out isRay);
}
// At any point along the tree walk we may encounter a transform that turns the ray into
// a line and if so we must stay a line
_isRay &= isRay;
}