public static bool Intersects(this Tri3D tri, Rect3D rect)
 {
     throw new NotImplementedException();
 }
 public static bool Intersects(this Sphere sphere, Rect3D rect)
 {
     throw new NotImplementedException();
 }
 public static bool Intersects(this Rect3D rect, Rect3D other)
 {
     throw new NotImplementedException();
 }
 public static bool Intersects(this Rect3D rect, Line3D line)
 {
     throw new NotImplementedException();
 }
 public static bool Contains(this Rect3D rect, Sphere sphere)
 {
     throw new NotImplementedException();
 }
 public static bool Contains(this Rect3D rect, Tri3D tri)
 {
     throw new NotImplementedException();
 }
 public static bool Contains(this Rect3D rect, Point3D point)
 {
     throw new NotImplementedException();
 }