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<div class="headertitle"><div class="title">pixel_dereference.hpp</div></div>
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<div class="contents">
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<div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">//</span></div>
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<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment">// Copyright 2005-2007 Adobe Systems Incorporated</span></div>
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<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment">//</span></div>
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<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment">// Distributed under the Boost Software License, Version 1.0</span></div>
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<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment">// See accompanying file LICENSE_1_0.txt or copy at</span></div>
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<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="comment">// http://www.boost.org/LICENSE_1_0.txt</span></div>
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<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="comment">//</span></div>
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<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="preprocessor">#ifndef BOOST_GIL_CONCEPTS_PIXEL_DEREFERENCE_HPP</span></div>
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<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="preprocessor">#define BOOST_GIL_CONCEPTS_PIXEL_DEREFERENCE_HPP</span></div>
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<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span> </div>
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<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="preprocessor">#include <boost/gil/concepts/basic.hpp></span></div>
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<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="preprocessor">#include <boost/gil/concepts/concept_check.hpp></span></div>
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<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="preprocessor">#include <boost/gil/concepts/fwd.hpp></span></div>
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<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="preprocessor">#include <boost/gil/concepts/pixel.hpp></span></div>
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<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="preprocessor">#include <boost/gil/concepts/detail/type_traits.hpp></span></div>
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<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span> </div>
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<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="preprocessor">#include <boost/concept_check.hpp></span></div>
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<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span> </div>
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<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="preprocessor">#include <cstddef></span></div>
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<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="preprocessor">#include <type_traits></span></div>
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<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span> </div>
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<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="preprocessor">#if defined(BOOST_CLANG)</span></div>
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<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span><span class="preprocessor">#pragma clang diagnostic push</span></div>
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<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span><span class="preprocessor">#pragma clang diagnostic ignored "-Wunknown-pragmas"</span></div>
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<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span><span class="preprocessor">#pragma clang diagnostic ignored "-Wunused-local-typedefs"</span></div>
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<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span><span class="preprocessor">#endif</span></div>
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<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span> </div>
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<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span><span class="preprocessor">#if defined(BOOST_GCC) && (BOOST_GCC >= 40900)</span></div>
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<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span><span class="preprocessor">#pragma GCC diagnostic push</span></div>
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<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span><span class="preprocessor">#pragma GCC diagnostic ignored "-Wunused-local-typedefs"</span></div>
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<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span><span class="preprocessor">#endif</span></div>
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<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span> </div>
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<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceboost.html">boost</a> { <span class="keyword">namespace </span>gil {</div>
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<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span> </div>
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<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span><span class="keyword">template</span> <<span class="keyword">typename</span> D></div>
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<div class="foldopen" id="foldopen00053" data-start="{" data-end="};">
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<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1_pixel_dereference_adaptor_concept.html"> 53</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structboost_1_1gil_1_1_pixel_dereference_adaptor_concept.html">PixelDereferenceAdaptorConcept</a></div>
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<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span>{</div>
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<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> <span class="keywordtype">void</span> constraints()</div>
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<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> {</div>
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<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> gil_function_requires</div>
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<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> <</div>
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<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> boost::UnaryFunctionConcept</div>
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<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> <</div>
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<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> D,</div>
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<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> <span class="keyword">typename</span> detail::remove_const_and_reference<typename D::result_type>::type,</div>
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<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> <span class="keyword">typename</span> D::argument_type</div>
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<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> ></div>
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<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> >();</div>
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<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> gil_function_requires<boost::DefaultConstructibleConcept<D>>();</div>
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<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> gil_function_requires<boost::CopyConstructibleConcept<D>>();</div>
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<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> gil_function_requires<boost::AssignableConcept<D>>();</div>
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<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> </div>
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<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> gil_function_requires<<a class="code hl_struct" href="structboost_1_1gil_1_1_pixel_concept.html">PixelConcept</a></div>
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<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> <</div>
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<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> <span class="keyword">typename</span> detail::remove_const_and_reference<typename D::result_type>::type</div>
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<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> >>();</div>
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<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> </div>
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<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> <span class="keyword">using </span>const_t = <span class="keyword">typename</span> D::const_t;</div>
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<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> gil_function_requires<PixelDereferenceAdaptorConcept<const_t>>();</div>
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<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> </div>
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<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> <span class="keyword">using </span>value_type = <span class="keyword">typename</span> D::value_type;</div>
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<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> gil_function_requires<PixelValueConcept<value_type>>();</div>
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<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> </div>
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<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> <span class="comment">// TODO: Should this be concept-checked after "if you remove const and reference"? --mloskot</span></div>
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<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> <span class="keyword">using </span>reference = <span class="keyword">typename</span> D::reference; <span class="comment">// == PixelConcept (if you remove const and reference)</span></div>
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<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> <span class="keyword">using </span>const_reference = <span class="keyword">typename</span> D::const_reference; <span class="comment">// == PixelConcept (if you remove const and reference)</span></div>
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<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> </div>
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<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> <span class="keywordtype">bool</span> <span class="keyword">const</span> is_mutable = D::is_mutable;</div>
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<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> ignore_unused_variable_warning(is_mutable);</div>
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<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> }</div>
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<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> D d;</div>
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<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span>};</div>
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</div>
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<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> </div>
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<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span><span class="keyword">template</span> <<span class="keyword">typename</span> P></div>
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<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span><span class="keyword">struct </span>PixelDereferenceAdaptorArchetype</div>
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<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span>{</div>
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<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> <span class="keyword">using </span>argument_type = P;</div>
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<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span> <span class="keyword">using </span>result_type = P;</div>
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<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> <span class="keyword">using </span>const_t = PixelDereferenceAdaptorArchetype;</div>
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<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> <span class="keyword">using </span>value_type = <span class="keyword">typename</span> std::remove_reference<P>::type;</div>
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<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> <span class="keyword">using </span>reference = <span class="keyword">typename</span> std::add_lvalue_reference<P>::type;</div>
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<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> <span class="keyword">using </span>const_reference = reference;</div>
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<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> </div>
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<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">bool</span> is_mutable = <span class="keyword">false</span>;</div>
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<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> P operator()(P)<span class="keyword"> const </span>{ <span class="keywordflow">throw</span>; }</div>
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<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span>};</div>
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<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> </div>
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<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span>}} <span class="comment">// namespace boost::gil</span></div>
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<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> </div>
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<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span><span class="preprocessor">#if defined(BOOST_CLANG)</span></div>
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<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span><span class="preprocessor">#pragma clang diagnostic pop</span></div>
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<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span><span class="preprocessor">#endif</span></div>
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<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> </div>
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<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span><span class="preprocessor">#if defined(BOOST_GCC) && (BOOST_GCC >= 40900)</span></div>
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<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span><span class="preprocessor">#pragma GCC diagnostic pop</span></div>
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<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span><span class="preprocessor">#endif</span></div>
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<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> </div>
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<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span><span class="preprocessor">#endif</span></div>
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<div class="ttc" id="anamespaceboost_html"><div class="ttname"><a href="namespaceboost.html">boost</a></div><div class="ttdoc">defined(BOOST_NO_CXX17_HDR_MEMORY_RESOURCE)</div><div class="ttdef"><b>Definition</b> algorithm.hpp:36</div></div>
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<div class="ttc" id="astructboost_1_1gil_1_1_pixel_concept_html"><div class="ttname"><a href="structboost_1_1gil_1_1_pixel_concept.html">boost::gil::PixelConcept</a></div><div class="ttdoc">Pixel concept - A color base whose elements are channels.</div><div class="ttdef"><b>Definition</b> concepts/pixel.hpp:64</div></div>
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<div class="ttc" id="astructboost_1_1gil_1_1_pixel_dereference_adaptor_concept_html"><div class="ttname"><a href="structboost_1_1gil_1_1_pixel_dereference_adaptor_concept.html">boost::gil::PixelDereferenceAdaptorConcept</a></div><div class="ttdoc">Represents a unary function object that can be invoked upon dereferencing a pixel iterator.</div><div class="ttdef"><b>Definition</b> pixel_dereference.hpp:54</div></div>
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