ceph/src/boost/boost/geometry/strategies/transform/inverse_transformer.hpp

   1 // Boost.Geometry (aka GGL, Generic Geometry Library)
   2
   3 // Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands.
   4 // Copyright (c) 2008-2012 Bruno Lalande, Paris, France.
   5 // Copyright (c) 2009-2012 Mateusz Loskot, London, UK.
   6
   7 // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
   8 // (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
   9
  10 // Use, modification and distribution is subject to the Boost Software License,
  11 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
  12 // http://www.boost.org/LICENSE_1_0.txt)
  13
  14 #ifndef BOOST_GEOMETRY_STRATEGIES_TRANSFORM_INVERSE_TRANSFORMER_HPP
  15 #define BOOST_GEOMETRY_STRATEGIES_TRANSFORM_INVERSE_TRANSFORMER_HPP
  16
  17 #include <boost/qvm/mat.hpp>
  18 #include <boost/qvm/mat_operations.hpp>
  19
  20 #include <boost/geometry/strategies/transform/matrix_transformers.hpp>
  21
  22
  23 namespace boost { namespace geometry
  24 {
  25
  26 namespace strategy { namespace transform
  27 {
  28
  29 /*!
  30 \brief Transformation strategy to do an inverse transformation in a Cartesian coordinate system
  31 \ingroup strategies
  32  */
  33 template
  34 <
  35     typename CalculationType,
  36     std::size_t Dimension1,
  37     std::size_t Dimension2
  38 >
  39 class inverse_transformer
  40     : public matrix_transformer<CalculationType, Dimension1, Dimension2>
  41 {
  42 public :
  43     template <typename Transformer>
  44     inline inverse_transformer(Transformer const& input)
  45     {
  46         this->m_matrix = boost::qvm::inverse(input.matrix());
  47     }
  48
  49 };
  50
  51
  52 }} // namespace strategy::transform
  53
  54
  55 }} // namespace boost::geometry
  56
  57 #endif // BOOST_GEOMETRY_STRATEGIES_TRANSFORM_INVERSE_TRANSFORMER_HPP