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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>
<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>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment">//</span></div>
<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>
<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>
<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>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="comment">//</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="preprocessor">#ifndef BOOST_GIL_PIXEL_ITERATOR_ADAPTOR_HPP</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="preprocessor">#define BOOST_GIL_PIXEL_ITERATOR_ADAPTOR_HPP</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span> </div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="preprocessor">#include &lt;boost/gil/concepts.hpp&gt;</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="preprocessor">#include &lt;boost/gil/pixel_iterator.hpp&gt;</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span> </div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="preprocessor">#include &lt;boost/iterator/iterator_facade.hpp&gt;</span></div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span> </div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="preprocessor">#include &lt;iterator&gt;</span></div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span> </div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceboost.html">boost</a> { <span class="keyword">namespace </span>gil {</div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span> </div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span> </div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span> </div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator, <span class="comment">// Models Iterator</span></div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span> <span class="keyword">typename</span> DFn&gt; <span class="comment">// Models Returns the result of dereferencing a given iterator of type Iterator</span></div>
<div class="foldopen" id="foldopen00029" data-start="{" data-end="};">
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html"> 29</a></span><span class="keyword">class </span><a class="code hl_class" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">dereference_iterator_adaptor</a> : <span class="keyword">public</span> iterator_adaptor&lt;dereference_iterator_adaptor&lt;Iterator,DFn&gt;,</div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span> Iterator,</div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span> typename DFn::value_type,</div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span> typename std::iterator_traits&lt;Iterator&gt;::iterator_category,</div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> typename DFn::reference,</div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span> use_default&gt; {</div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> DFn _deref_fn;</div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span><span class="keyword">public</span>:</div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> <span class="keyword">using </span>parent_t = iterator_adaptor&lt;dereference_iterator_adaptor&lt;Iterator,DFn&gt;,</div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> Iterator,</div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> <span class="keyword">typename</span> DFn::value_type,</div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> <span class="keyword">typename</span> std::iterator_traits&lt;Iterator&gt;::iterator_category,</div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> <span class="keyword">typename</span> DFn::reference,</div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> use_default&gt;;</div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> <span class="keyword">using </span>reference = <span class="keyword">typename</span> DFn::result_type;</div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> <span class="keyword">using </span>difference_type = <span class="keyword">typename</span> std::iterator_traits&lt;Iterator&gt;::difference_type;</div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> <span class="keyword">using </span>dereference_fn = DFn;</div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> </div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> <a class="code hl_class" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">dereference_iterator_adaptor</a>() {}</div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator1&gt;</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> <a class="code hl_class" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">dereference_iterator_adaptor</a>(<span class="keyword">const</span> <a class="code hl_class" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">dereference_iterator_adaptor&lt;Iterator1,DFn&gt;</a>&amp; dit) : parent_t(dit.base()), _deref_fn(dit._deref_fn) {}</div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> <a class="code hl_class" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">dereference_iterator_adaptor</a>(Iterator it, DFn deref_fn=DFn()) : parent_t(it), _deref_fn(deref_fn) {}</div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator1, <span class="keyword">typename</span> DFn1&gt;</div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> <a class="code hl_class" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">dereference_iterator_adaptor</a>(<span class="keyword">const</span> <a class="code hl_class" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">dereference_iterator_adaptor&lt;Iterator1,DFn1&gt;</a>&amp; it) : parent_t(it.base()), _deref_fn(it._deref_fn) {}</div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html#a16d8e6857dd561244ca73764f2b94801"> 55</a></span> reference <a class="code hl_function" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html#a16d8e6857dd561244ca73764f2b94801">operator[]</a>(difference_type d)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> *(*<span class="keyword">this</span>+d);}</div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> </div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> <span class="comment">// although iterator_adaptor defines these, the default implementation computes distance and compares for zero.</span></div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> <span class="comment">// it is often faster to just apply the relation operator to the base</span></div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> <span class="keywordtype">bool</span> operator&gt; (<span class="keyword">const</span> <a class="code hl_class" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">dereference_iterator_adaptor</a>&amp; p)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> this-&gt;base_reference()&gt; p.base_reference(); }</div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> <span class="keywordtype">bool</span> operator&lt; (<span class="keyword">const</span> dereference_iterator_adaptor&amp; p)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> this-&gt;base_reference()&lt; p.base_reference(); }</div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> <span class="keywordtype">bool</span> operator&gt;=(<span class="keyword">const</span> dereference_iterator_adaptor&amp; p)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> this-&gt;base_reference()&gt;=p.base_reference(); }</div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> <span class="keywordtype">bool</span> operator&lt;=(<span class="keyword">const</span> dereference_iterator_adaptor&amp; p)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> this-&gt;base_reference()&lt;=p.base_reference(); }</div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> <span class="keywordtype">bool</span> operator==(<span class="keyword">const</span> dereference_iterator_adaptor&amp; p)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> this-&gt;base_reference()==p.base_reference(); }</div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> <span class="keywordtype">bool</span> operator!=(<span class="keyword">const</span> dereference_iterator_adaptor&amp; p)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> this-&gt;base_reference()!=p.base_reference(); }</div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> </div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> Iterator&amp; base() { <span class="keywordflow">return</span> this-&gt;base_reference(); }</div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> <span class="keyword">const</span> Iterator&amp; base()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> this-&gt;base_reference(); }</div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> <span class="keyword">const</span> DFn&amp; deref_fn()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> _deref_fn; }</div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span><span class="keyword">private</span>:</div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator1, <span class="keyword">typename</span> DFn1&gt;</div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> <span class="keyword">friend</span> <span class="keyword">class </span>dereference_iterator_adaptor;</div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> <span class="keyword">friend</span> <span class="keyword">class </span>boost::iterator_core_access;</div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> </div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> reference dereference()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> _deref_fn(*(this-&gt;base_reference())); }</div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span>};</div>
</div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> </div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> I, <span class="keyword">typename</span> DFn&gt;</div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span><span class="keyword">struct </span>const_iterator_type&lt;dereference_iterator_adaptor&lt;I,DFn&gt; &gt; {</div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> <span class="keyword">using </span>type = dereference_iterator_adaptor&lt;typename const_iterator_type&lt;I&gt;::type,<span class="keyword">typename</span> DFn::const_t&gt;;</div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span>};</div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> </div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> I, <span class="keyword">typename</span> DFn&gt;</div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span><span class="keyword">struct </span>iterator_is_mutable&lt;dereference_iterator_adaptor&lt;I, DFn&gt;&gt;</div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> : std::integral_constant&lt;bool, DFn::is_mutable&gt;</div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span>{};</div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> </div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> </div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> I, <span class="keyword">typename</span> DFn&gt;</div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span><span class="keyword">struct </span>is_iterator_adaptor&lt;dereference_iterator_adaptor&lt;I, DFn&gt;&gt; : std::true_type {};</div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> </div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> I, <span class="keyword">typename</span> DFn&gt;</div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span><span class="keyword">struct </span>iterator_adaptor_get_base&lt;dereference_iterator_adaptor&lt;I, DFn&gt;&gt;</div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span>{</div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> <span class="keyword">using </span>type = I;</div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span>};</div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> </div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> I, <span class="keyword">typename</span> DFn, <span class="keyword">typename</span> NewBaseIterator&gt;</div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span><span class="keyword">struct </span>iterator_adaptor_rebind&lt;dereference_iterator_adaptor&lt;I,DFn&gt;,NewBaseIterator&gt; {</div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> <span class="keyword">using </span>type = dereference_iterator_adaptor&lt;NewBaseIterator,DFn&gt;;</div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span>};</div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> </div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span><span class="comment">// PixelBasedConcept</span></div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> </div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> I, <span class="keyword">typename</span> DFn&gt;</div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span><span class="keyword">struct </span>color_space_type&lt;dereference_iterator_adaptor&lt;I,DFn&gt; &gt; : <span class="keyword">public</span> color_space_type&lt;typename DFn::value_type&gt; {};</div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> </div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> I, <span class="keyword">typename</span> DFn&gt;</div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span><span class="keyword">struct </span>channel_mapping_type&lt;dereference_iterator_adaptor&lt;I,DFn&gt; &gt; : <span class="keyword">public</span> channel_mapping_type&lt;typename DFn::value_type&gt; {};</div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> </div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> I, <span class="keyword">typename</span> DFn&gt;</div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span><span class="keyword">struct </span>is_planar&lt;dereference_iterator_adaptor&lt;I,DFn&gt; &gt; : <span class="keyword">public</span> is_planar&lt;typename DFn::value_type&gt; {};</div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> </div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> I, <span class="keyword">typename</span> DFn&gt;</div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span><span class="keyword">struct </span>channel_type&lt;dereference_iterator_adaptor&lt;I,DFn&gt; &gt; : <span class="keyword">public</span> channel_type&lt;typename DFn::value_type&gt; {};</div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> </div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> </div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span><span class="comment">// MemoryBasedIteratorConcept</span></div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span> </div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator, <span class="keyword">typename</span> DFn&gt;</div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span><span class="keyword">struct </span>byte_to_memunit&lt;dereference_iterator_adaptor&lt;Iterator,DFn&gt;&gt; : <span class="keyword">public</span> byte_to_memunit&lt;Iterator&gt; {};</div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> </div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator, <span class="keyword">typename</span> DFn&gt;</div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span><span class="keyword">inline</span> <span class="keyword">auto</span> memunit_step(dereference_iterator_adaptor&lt;Iterator,DFn&gt; <span class="keyword">const</span>&amp; p)</div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> -&gt; <span class="keyword">typename</span> std::iterator_traits&lt;Iterator&gt;::difference_type</div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span>{</div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span> <span class="keywordflow">return</span> memunit_step(p.base());</div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span>}</div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span> </div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator, <span class="keyword">typename</span> DFn&gt;</div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span><span class="keyword">inline</span> <span class="keyword">auto</span> memunit_distance(dereference_iterator_adaptor&lt;Iterator,DFn&gt; <span class="keyword">const</span>&amp; p1,</div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span> dereference_iterator_adaptor&lt;Iterator,DFn&gt; <span class="keyword">const</span>&amp; p2)</div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span> -&gt; <span class="keyword">typename</span> std::iterator_traits&lt;Iterator&gt;::difference_type</div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span>{</div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span> <span class="keywordflow">return</span> memunit_distance(p1.base(),p2.base());</div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span>}</div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span> </div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator, <span class="keyword">typename</span> DFn&gt;</div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span><span class="keyword">inline</span> <span class="keywordtype">void</span> memunit_advance(dereference_iterator_adaptor&lt;Iterator,DFn&gt;&amp; p,</div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span> <span class="keyword">typename</span> std::iterator_traits&lt;Iterator&gt;::difference_type diff) {</div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span> memunit_advance(p.base(), diff);</div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span>}</div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span> </div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"> 147</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator, <span class="keyword">typename</span> DFn&gt;</div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span><span class="keyword">inline</span> <span class="keyword">auto</span> memunit_advanced(dereference_iterator_adaptor&lt;Iterator,DFn&gt; <span class="keyword">const</span>&amp; p,</div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span> <span class="keyword">typename</span> std::iterator_traits&lt;Iterator&gt;::difference_type diff)</div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span> -&gt; dereference_iterator_adaptor&lt;Iterator,DFn&gt;</div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"> 151</span>{</div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span> <span class="keywordflow">return</span> dereference_iterator_adaptor&lt;Iterator,DFn&gt;(memunit_advanced(p.base(), diff), p.deref_fn());</div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span>}</div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span> </div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"> 155</span> </div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator, <span class="keyword">typename</span> DFn&gt;</div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span><span class="keyword">inline</span> <span class="keyword">auto</span> memunit_advanced_ref(dereference_iterator_adaptor&lt;Iterator,DFn&gt; <span class="keyword">const</span>&amp; p,</div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span> <span class="keyword">typename</span> std::iterator_traits&lt;Iterator&gt;::difference_type diff)</div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span> -&gt; <span class="keyword">typename</span> std::iterator_traits&lt;dereference_iterator_adaptor&lt;Iterator,DFn&gt; &gt;::reference</div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span>{</div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span> <span class="keywordflow">return</span> *memunit_advanced(p, diff);</div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span>}</div>
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno"> 163</span> </div>
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno"> 165</span><span class="comment">// HasDynamicXStepTypeConcept</span></div>
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno"> 167</span> </div>
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno"> 168</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator, <span class="keyword">typename</span> DFn&gt;</div>
<div class="line"><a id="l00169" name="l00169"></a><span class="lineno"> 169</span><span class="keyword">struct </span>dynamic_x_step_type&lt;dereference_iterator_adaptor&lt;Iterator,DFn&gt; &gt; {</div>
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno"> 170</span> <span class="keyword">using </span>type = dereference_iterator_adaptor&lt;typename dynamic_x_step_type&lt;Iterator&gt;::type,DFn&gt;;</div>
<div class="line"><a id="l00171" name="l00171"></a><span class="lineno"> 171</span>};</div>
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno"> 172</span> </div>
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno"> 175</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator, <span class="keyword">typename</span> Deref&gt;</div>
<div class="foldopen" id="foldopen00176" data-start="{" data-end="};">
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1iterator__add__deref.html"> 176</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structboost_1_1gil_1_1iterator__add__deref.html">iterator_add_deref</a> {</div>
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno"> 177</span> BOOST_GIL_CLASS_REQUIRE(Deref, boost::gil, <a class="code hl_struct" href="structboost_1_1gil_1_1_pixel_dereference_adaptor_concept.html">PixelDereferenceAdaptorConcept</a>)</div>
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno"> 178</span> </div>
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno"> 179</span> <span class="keyword">using </span><a class="code hl_class" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">type</a> = <a class="code hl_class" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">dereference_iterator_adaptor&lt;Iterator, Deref&gt;</a>;</div>
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno"> 180</span> </div>
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno"> 181</span> <span class="keyword">static</span> <a class="code hl_class" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">type</a> make(<span class="keyword">const</span> Iterator&amp; it, <span class="keyword">const</span> Deref&amp; d) { <span class="keywordflow">return</span> <a class="code hl_class" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">type</a>(it,d); }</div>
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno"> 182</span>};</div>
</div>
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno"> 183</span> </div>
<div class="line"><a id="l00186" name="l00186"></a><span class="lineno"> 186</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator, <span class="keyword">typename</span> PREV_DEREF, <span class="keyword">typename</span> Deref&gt;</div>
<div class="foldopen" id="foldopen00187" data-start="{" data-end="};">
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1iterator__add__deref_3_01dereference__iterator__adaptor_3_01_iterator_00_0927b7f3fa453e9b4decea8a0c8e52f27.html"> 187</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structboost_1_1gil_1_1iterator__add__deref.html">iterator_add_deref</a>&lt;<a class="code hl_class" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">dereference_iterator_adaptor</a>&lt;Iterator, PREV_DEREF&gt;,Deref&gt; {</div>
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno"> 188</span><span class="comment">// BOOST_GIL_CLASS_REQUIRE(Deref, boost::gil, PixelDereferenceAdaptorConcept)</span></div>
<div class="line"><a id="l00189" name="l00189"></a><span class="lineno"> 189</span> </div>
<div class="line"><a id="l00190" name="l00190"></a><span class="lineno"> 190</span> <span class="keyword">using </span><a class="code hl_class" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">type</a> = <a class="code hl_class" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">dereference_iterator_adaptor&lt;Iterator, deref_compose&lt;Deref,PREV_DEREF&gt;</a>&gt;;</div>
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno"> 191</span> </div>
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno"> 192</span> <span class="keyword">static</span> <a class="code hl_class" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">type</a> make(<span class="keyword">const</span> <a class="code hl_class" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">dereference_iterator_adaptor&lt;Iterator, PREV_DEREF&gt;</a>&amp; it, <span class="keyword">const</span> Deref&amp; d) {</div>
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno"> 193</span> <span class="keywordflow">return</span> <a class="code hl_class" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">type</a>(it.base(),<a class="code hl_class" href="classboost_1_1gil_1_1deref__compose.html">deref_compose&lt;Deref,PREV_DEREF&gt;</a>(d,it.deref_fn()));</div>
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno"> 194</span> }</div>
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno"> 195</span>};</div>
</div>
<div class="line"><a id="l00196" name="l00196"></a><span class="lineno"> 196</span> </div>
<div class="line"><a id="l00197" name="l00197"></a><span class="lineno"> 197</span>}} <span class="comment">// namespace boost::gil</span></div>
<div class="line"><a id="l00198" name="l00198"></a><span class="lineno"> 198</span> </div>
<div class="line"><a id="l00199" name="l00199"></a><span class="lineno"> 199</span><span class="preprocessor">#endif</span></div>
<div class="ttc" id="aclassboost_1_1gil_1_1deref__compose_html"><div class="ttname"><a href="classboost_1_1gil_1_1deref__compose.html">boost::gil::deref_compose</a></div><div class="ttdoc">Composes two dereference function objects. Similar to std::unary_compose but needs to pull some alias...</div><div class="ttdef"><b>Definition</b> utilities.hpp:131</div></div>
<div class="ttc" id="aclassboost_1_1gil_1_1dereference__iterator__adaptor_html"><div class="ttname"><a href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">boost::gil::dereference_iterator_adaptor</a></div><div class="ttdoc">An adaptor over an existing iterator that provides for custom filter on dereferencing the object....</div><div class="ttdef"><b>Definition</b> pixel_iterator_adaptor.hpp:34</div></div>
<div class="ttc" id="aclassboost_1_1gil_1_1dereference__iterator__adaptor_html_a16d8e6857dd561244ca73764f2b94801"><div class="ttname"><a href="classboost_1_1gil_1_1dereference__iterator__adaptor.html#a16d8e6857dd561244ca73764f2b94801">boost::gil::dereference_iterator_adaptor::operator[]</a></div><div class="ttdeci">reference operator[](difference_type d) const</div><div class="ttdef"><b>Definition</b> pixel_iterator_adaptor.hpp:55</div></div>
<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>
<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>
<div class="ttc" id="astructboost_1_1gil_1_1iterator__add__deref_html"><div class="ttname"><a href="structboost_1_1gil_1_1iterator__add__deref.html">boost::gil::iterator_add_deref</a></div><div class="ttdoc">Returns the type (and creates an instance) of an iterator that invokes the given dereference adaptor ...</div><div class="ttdef"><b>Definition</b> pixel_iterator_adaptor.hpp:176</div></div>
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