cross_product.h

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#ifndef __stir_cross_product_H__
#define __stir_cross_product_H__
//
//
/*
    Copyright (C) 2003- 2005, Hammersmith Imanet Ltd
    This file is part of STIR.
 
    SPDX-License-Identifier: Apache-2.0
 
    See STIR/LICENSE.txt for details
*/
 
#include "stir/CartesianCoordinate3D.h"
 
START_NAMESPACE_STIR

 
template <class coordT>
CartesianCoordinate3D<coordT>
cross_product(const CartesianCoordinate3D<coordT>& a, const CartesianCoordinate3D<coordT>& b)
{
  return CartesianCoordinate3D<coordT>(
      a.y() * b.x() - a.x() * b.y(), -a.z() * b.x() + a.x() * b.z(), a.z() * b.y() - a.y() * b.z());
};
 
END_NAMESPACE_STIR
 
#endif