libs/gil/test/extension/io/subimage_test.hpp

   1 //
   2 // Copyright 2013 Christian Henning
   3 //
   4 // Distributed under the Boost Software License, Version 1.0
   5 // See accompanying file LICENSE_1_0.txt or copy at
   6 // http://www.boost.org/LICENSE_1_0.txt
   7 //
   8 #ifndef BOOST_GIL_IO_TEST_SUBIMAGE_TEST_HPP
   9 #define BOOST_GIL_IO_TEST_SUBIMAGE_TEST_HPP
  10
  11 #include <boost/gil.hpp>
  12
  13 using namespace std;
  14 using namespace boost;
  15 using namespace gil;
  16
  17 template< typename Image
  18         , typename Format
  19         >
  20 void run_subimage_test( string filename
  21                       , const point_t& top_left
  22                       , const point_t& dimension
  23                       )
  24 {
  25     Image original, subimage;
  26
  27     read_image( filename
  28               , original
  29               , Format()
  30               );
  31
  32     image_read_settings< Format > settings( top_left
  33                                            , dimension
  34                                            );
  35
  36
  37     read_image( filename
  38               , subimage
  39               , settings
  40               );
  41
  42     BOOST_CHECK( equal_pixels( const_view( subimage )
  43                              , subimage_view( const_view( original )
  44                                             , top_left
  45                                             , dimension
  46                                             )
  47                              )
  48                );
  49 }
  50
  51 #endif // BOOST_GIL_IO_TEST_SUBIMAGE_TEST_HPP