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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_STEP_ITERATOR_HPP</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="preprocessor">#define BOOST_GIL_STEP_ITERATOR_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/dynamic_step.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><span class="preprocessor">#include &lt;boost/gil/pixel_iterator_adaptor.hpp&gt;</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="preprocessor">#include &lt;boost/gil/utilities.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;boost/iterator/iterator_facade.hpp&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="preprocessor">#include &lt;cstddef&gt;</span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="preprocessor">#include &lt;iterator&gt;</span></div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="preprocessor">#include &lt;type_traits&gt;</span></div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span> </div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</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="l00023" name="l00023"></a><span class="lineno"> 23</span> </div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span> </div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span><span class="keyword">namespace </span>detail {</div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span> </div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> </div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Derived, <span class="comment">// type of the derived class</span></div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> <span class="keyword">typename</span> Iterator, <span class="comment">// Models Iterator</span></div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> <span class="keyword">typename</span> SFn&gt; <span class="comment">// A policy object that can compute the distance between two iterators of type Iterator</span></div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> <span class="comment">// and can advance an iterator of type Iterator a given number of Iterator&#39;s units</span></div>
<div class="foldopen" id="foldopen00041" data-start="{" data-end="};">
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1detail_1_1step__iterator__adaptor.html"> 41</a></span><span class="keyword">class </span><a class="code hl_class" href="classboost_1_1gil_1_1detail_1_1step__iterator__adaptor.html">step_iterator_adaptor</a> : <span class="keyword">public</span> iterator_adaptor&lt;Derived, Iterator, use_default, use_default, use_default, typename SFn::difference_type&gt;</div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span>{</div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span><span class="keyword">public</span>:</div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> <span class="keyword">using </span>parent_t = iterator_adaptor&lt;Derived, Iterator, use_default, use_default, use_default, typename SFn::difference_type&gt;;</div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> <span class="keyword">using </span>base_difference_type = <span class="keyword">typename</span> std::iterator_traits&lt;Iterator&gt;::difference_type;</div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> <span class="keyword">using </span>difference_type = <span class="keyword">typename</span> SFn::difference_type;</div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> <span class="keyword">using </span>reference = <span class="keyword">typename</span> std::iterator_traits&lt;Iterator&gt;::reference;</div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> </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_1detail_1_1step__iterator__adaptor.html">step_iterator_adaptor</a>() {}</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_1detail_1_1step__iterator__adaptor.html">step_iterator_adaptor</a>(Iterator <span class="keyword">const</span>&amp; it, SFn step_fn=SFn()) : parent_t(it), _step_fn(step_fn) {}</div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> </div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> <span class="keyword">auto</span> step() <span class="keyword">const</span> -&gt; difference_type { <span class="keywordflow">return</span> _step_fn.step(); }</div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> </div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span><span class="keyword">protected</span>:</div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> SFn _step_fn;</div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span><span class="keyword">private</span>:</div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> <span class="keyword">friend</span> <span class="keyword">class </span>boost::iterator_core_access;</div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> </div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> <span class="keywordtype">void</span> increment() { _step_fn.advance(this-&gt;base_reference(),1); }</div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> <span class="keywordtype">void</span> decrement() { _step_fn.advance(this-&gt;base_reference(),-1); }</div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> <span class="keywordtype">void</span> advance(base_difference_type d) { _step_fn.advance(this-&gt;base_reference(),d); }</div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> </div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> <span class="keyword">auto</span> distance_to(<a class="code hl_class" href="classboost_1_1gil_1_1detail_1_1step__iterator__adaptor.html">step_iterator_adaptor</a> <span class="keyword">const</span>&amp; it) <span class="keyword">const</span> -&gt; difference_type</div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> {</div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> <span class="keywordflow">return</span> _step_fn.difference(this-&gt;base_reference(),it.base_reference());</div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> }</div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span>};</div>
</div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> </div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</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="l00070" name="l00070"></a><span class="lineno"> 70</span><span class="comment">// it is often faster to just apply the relation operator to the base</span></div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> D,<span class="keyword">typename</span> Iterator,<span class="keyword">typename</span> SFn&gt; <span class="keyword">inline</span></div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span><span class="keywordtype">bool</span> operator&gt;(<span class="keyword">const</span> <a class="code hl_class" href="classboost_1_1gil_1_1detail_1_1step__iterator__adaptor.html">step_iterator_adaptor&lt;D,Iterator,SFn&gt;</a>&amp; p1, <span class="keyword">const</span> <a class="code hl_class" href="classboost_1_1gil_1_1detail_1_1step__iterator__adaptor.html">step_iterator_adaptor&lt;D,Iterator,SFn&gt;</a>&amp; p2) {</div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> <span class="keywordflow">return</span> p1.step()&gt;0 ? p1.base()&gt; p2.base() : p1.base()&lt; p2.base();</div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span>}</div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> </div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> D,<span class="keyword">typename</span> Iterator,<span class="keyword">typename</span> SFn&gt; <span class="keyword">inline</span></div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span><span class="keywordtype">bool</span> operator&lt;(<span class="keyword">const</span> step_iterator_adaptor&lt;D,Iterator,SFn&gt;&amp; p1, <span class="keyword">const</span> step_iterator_adaptor&lt;D,Iterator,SFn&gt;&amp; p2) {</div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> <span class="keywordflow">return</span> p1.step()&gt;0 ? p1.base()&lt; p2.base() : p1.base()&gt; p2.base();</div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span>}</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><span class="keyword">template</span> &lt;<span class="keyword">typename</span> D,<span class="keyword">typename</span> Iterator,<span class="keyword">typename</span> SFn&gt; <span class="keyword">inline</span></div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span><span class="keywordtype">bool</span> operator&gt;=(<span class="keyword">const</span> step_iterator_adaptor&lt;D,Iterator,SFn&gt;&amp; p1, <span class="keyword">const</span> step_iterator_adaptor&lt;D,Iterator,SFn&gt;&amp; p2) {</div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> <span class="keywordflow">return</span> p1.step()&gt;0 ? p1.base()&gt;=p2.base() : p1.base()&lt;=p2.base();</div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span>}</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><span class="keyword">template</span> &lt;<span class="keyword">typename</span> D,<span class="keyword">typename</span> Iterator,<span class="keyword">typename</span> SFn&gt; <span class="keyword">inline</span></div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span><span class="keywordtype">bool</span> operator&lt;=(<span class="keyword">const</span> step_iterator_adaptor&lt;D,Iterator,SFn&gt;&amp; p1, <span class="keyword">const</span> step_iterator_adaptor&lt;D,Iterator,SFn&gt;&amp; p2) {</div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> <span class="keywordflow">return</span> p1.step()&gt;0 ? p1.base()&lt;=p2.base() : p1.base()&gt;=p2.base();</div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span>}</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> D,<span class="keyword">typename</span> Iterator,<span class="keyword">typename</span> SFn&gt; <span class="keyword">inline</span></div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span><span class="keywordtype">bool</span> operator==(<span class="keyword">const</span> step_iterator_adaptor&lt;D,Iterator,SFn&gt;&amp; p1, <span class="keyword">const</span> step_iterator_adaptor&lt;D,Iterator,SFn&gt;&amp; p2) {</div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> <span class="keywordflow">return</span> p1.base()==p2.base();</div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span>}</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><span class="keyword">template</span> &lt;<span class="keyword">typename</span> D,<span class="keyword">typename</span> Iterator,<span class="keyword">typename</span> SFn&gt; <span class="keyword">inline</span></div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span><span class="keywordtype">bool</span> operator!=(<span class="keyword">const</span> step_iterator_adaptor&lt;D,Iterator,SFn&gt;&amp; p1, <span class="keyword">const</span> step_iterator_adaptor&lt;D,Iterator,SFn&gt;&amp; p2) {</div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> <span class="keywordflow">return</span> p1.base()!=p2.base();</div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span>}</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>} <span class="comment">// namespace detail</span></div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> </div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> </div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span> </div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator&gt;</div>
<div class="foldopen" id="foldopen00126" data-start="{" data-end="};">
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1memunit__step__fn.html"> 126</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structboost_1_1gil_1_1memunit__step__fn.html">memunit_step_fn</a> {</div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span> <span class="keyword">using </span>difference_type = std::ptrdiff_t;</div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> </div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span> <a class="code hl_struct" href="structboost_1_1gil_1_1memunit__step__fn.html">memunit_step_fn</a>(difference_type step=memunit_step(Iterator())) : _step(step) {}</div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span> </div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span> <span class="keyword">auto</span> difference(Iterator <span class="keyword">const</span>&amp; it1, Iterator <span class="keyword">const</span>&amp; it2) <span class="keyword">const</span> -&gt; difference_type</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="keywordflow">return</span> memunit_distance(it1,it2)/_step;</div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span> }</div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span> </div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span> <span class="keywordtype">void</span> advance(Iterator&amp; it, difference_type d)<span class="keyword"> const </span>{ memunit_advance(it,d*_step); }</div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span> <span class="keyword">auto</span> step() <span class="keyword">const</span> -&gt; difference_type { <span class="keywordflow">return</span> _step; }</div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span> </div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span> <span class="keywordtype">void</span> set_step(std::ptrdiff_t step) { _step=step; }</div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span><span class="keyword">private</span>:</div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span> BOOST_GIL_CLASS_REQUIRE(Iterator, boost::gil, <a class="code hl_struct" href="structboost_1_1gil_1_1_memory_based_iterator_concept.html">MemoryBasedIteratorConcept</a>)</div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span> difference_type _step;</div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span>};</div>
</div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span> </div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator&gt;</div>
<div class="foldopen" id="foldopen00146" data-start="{" data-end="};">
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1memory__based__step__iterator.html"> 146</a></span><span class="keyword">class </span><a class="code hl_class" href="classboost_1_1gil_1_1memory__based__step__iterator.html">memory_based_step_iterator</a> : <span class="keyword">public</span> <a class="code hl_class" href="classboost_1_1gil_1_1detail_1_1step__iterator__adaptor.html">detail::step_iterator_adaptor</a>&lt;memory_based_step_iterator&lt;Iterator&gt;,</div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"> 147</span> Iterator,</div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span> memunit_step_fn&lt;Iterator&gt;&gt;</div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span>{</div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span> BOOST_GIL_CLASS_REQUIRE(Iterator, boost::gil, <a class="code hl_struct" href="structboost_1_1gil_1_1_memory_based_iterator_concept.html">MemoryBasedIteratorConcept</a>)</div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"> 151</span><span class="keyword">public</span>:</div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span> <span class="keyword">using </span><a class="code hl_class" href="classboost_1_1gil_1_1detail_1_1step__iterator__adaptor.html">parent_t</a> = <a class="code hl_class" href="classboost_1_1gil_1_1detail_1_1step__iterator__adaptor.html">detail::step_iterator_adaptor&lt;memory_based_step_iterator&lt;Iterator&gt;</a>,</div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span> Iterator,</div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span> <a class="code hl_struct" href="structboost_1_1gil_1_1memunit__step__fn.html">memunit_step_fn&lt;Iterator&gt;</a>&gt;;</div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"> 155</span> <span class="keyword">using </span>reference = <span class="keyword">typename</span> parent_t::reference;</div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span> <span class="keyword">using </span>difference_type = <span class="keyword">typename</span> parent_t::difference_type;</div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span> <span class="keyword">using </span>x_iterator = Iterator;</div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span> </div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span> <a class="code hl_class" href="classboost_1_1gil_1_1memory__based__step__iterator.html">memory_based_step_iterator</a>() : <a class="code hl_class" href="classboost_1_1gil_1_1detail_1_1step__iterator__adaptor.html">parent_t</a>(Iterator()) {}</div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span> <a class="code hl_class" href="classboost_1_1gil_1_1memory__based__step__iterator.html">memory_based_step_iterator</a>(Iterator it, std::ptrdiff_t memunit_step) : <a class="code hl_class" href="classboost_1_1gil_1_1detail_1_1step__iterator__adaptor.html">parent_t</a>(it, <a class="code hl_struct" href="structboost_1_1gil_1_1memunit__step__fn.html">memunit_step_fn&lt;Iterator&gt;</a>(memunit_step)) {}</div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span> <span class="keyword">template</span> &lt;<span class="keyword">typename</span> I2&gt;</div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span> <a class="code hl_class" href="classboost_1_1gil_1_1memory__based__step__iterator.html">memory_based_step_iterator</a>(<span class="keyword">const</span> <a class="code hl_class" href="classboost_1_1gil_1_1memory__based__step__iterator.html">memory_based_step_iterator&lt;I2&gt;</a>&amp; it)</div>
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno"> 163</span> : <a class="code hl_class" href="classboost_1_1gil_1_1detail_1_1step__iterator__adaptor.html">parent_t</a>(it.base(), <a class="code hl_struct" href="structboost_1_1gil_1_1memunit__step__fn.html">memunit_step_fn&lt;Iterator&gt;</a>(it.step())) {}</div>
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno"> 164</span> </div>
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1memory__based__step__iterator.html#a3832fa78e567d765df5630ec4555a659"> 167</a></span> <span class="keyword">auto</span> <a class="code hl_function" href="classboost_1_1gil_1_1memory__based__step__iterator.html#a3832fa78e567d765df5630ec4555a659">operator[]</a>(difference_type d) <span class="keyword">const</span> -&gt; reference { <span class="keywordflow">return</span> *(*<span class="keyword">this</span>+d); }</div>
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno"> 168</span> </div>
<div class="line"><a id="l00169" name="l00169"></a><span class="lineno"> 169</span> <span class="keywordtype">void</span> set_step(std::ptrdiff_t memunit_step) { this-&gt;_step_fn.set_step(memunit_step); }</div>
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno"> 170</span> </div>
<div class="line"><a id="l00171" name="l00171"></a><span class="lineno"> 171</span> <span class="keyword">auto</span> base() -&gt; x_iterator&amp; { <span class="keywordflow">return</span> parent_t::base_reference(); }</div>
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno"> 172</span> <span class="keyword">auto</span> base() const -&gt; x_iterator const&amp; { <span class="keywordflow">return</span> parent_t::base_reference(); }</div>
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno"> 173</span>};</div>
</div>
<div class="line"><a id="l00174" name="l00174"></a><span class="lineno"> 174</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&gt;</div>
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno"> 176</span><span class="keyword">struct </span>const_iterator_type&lt;memory_based_step_iterator&lt;Iterator&gt;&gt; {</div>
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno"> 177</span> <span class="keyword">using </span>type = memory_based_step_iterator&lt;typename const_iterator_type&lt;Iterator&gt;::type&gt;;</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> </div>
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno"> 180</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator&gt;</div>
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno"> 181</span><span class="keyword">struct </span>iterator_is_mutable&lt;memory_based_step_iterator&lt;Iterator&gt;&gt; : <span class="keyword">public</span> iterator_is_mutable&lt;Iterator&gt; {};</div>
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno"> 182</span> </div>
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno"> 183</span> </div>
<div class="line"><a id="l00185" name="l00185"></a><span class="lineno"> 185</span><span class="comment">// IteratorAdaptorConcept</span></div>
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno"> 187</span> </div>
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno"> 188</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator&gt;</div>
<div class="line"><a id="l00189" name="l00189"></a><span class="lineno"> 189</span><span class="keyword">struct </span>is_iterator_adaptor&lt;memory_based_step_iterator&lt;Iterator&gt;&gt; : std::true_type {};</div>
<div class="line"><a id="l00190" name="l00190"></a><span class="lineno"> 190</span> </div>
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno"> 191</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator&gt;</div>
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno"> 192</span><span class="keyword">struct </span>iterator_adaptor_get_base&lt;memory_based_step_iterator&lt;Iterator&gt;&gt;</div>
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno"> 193</span>{</div>
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno"> 194</span> <span class="keyword">using </span>type = Iterator;</div>
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno"> 195</span>};</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="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator, <span class="keyword">typename</span> NewBaseIterator&gt;</div>
<div class="line"><a id="l00198" name="l00198"></a><span class="lineno"> 198</span><span class="keyword">struct </span>iterator_adaptor_rebind&lt;memory_based_step_iterator&lt;Iterator&gt;, NewBaseIterator&gt;</div>
<div class="line"><a id="l00199" name="l00199"></a><span class="lineno"> 199</span>{</div>
<div class="line"><a id="l00200" name="l00200"></a><span class="lineno"> 200</span> <span class="keyword">using </span>type = memory_based_step_iterator&lt;NewBaseIterator&gt;;</div>
<div class="line"><a id="l00201" name="l00201"></a><span class="lineno"> 201</span>};</div>
<div class="line"><a id="l00202" name="l00202"></a><span class="lineno"> 202</span> </div>
<div class="line"><a id="l00204" name="l00204"></a><span class="lineno"> 204</span><span class="comment">// PixelBasedConcept</span></div>
<div class="line"><a id="l00206" name="l00206"></a><span class="lineno"> 206</span> </div>
<div class="line"><a id="l00207" name="l00207"></a><span class="lineno"> 207</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator&gt;</div>
<div class="line"><a id="l00208" name="l00208"></a><span class="lineno"> 208</span><span class="keyword">struct </span>color_space_type&lt;memory_based_step_iterator&lt;Iterator&gt;&gt; : <span class="keyword">public</span> color_space_type&lt;Iterator&gt; {};</div>
<div class="line"><a id="l00209" name="l00209"></a><span class="lineno"> 209</span> </div>
<div class="line"><a id="l00210" name="l00210"></a><span class="lineno"> 210</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator&gt;</div>
<div class="line"><a id="l00211" name="l00211"></a><span class="lineno"> 211</span><span class="keyword">struct </span>channel_mapping_type&lt;memory_based_step_iterator&lt;Iterator&gt;&gt; : <span class="keyword">public</span> channel_mapping_type&lt;Iterator&gt; {};</div>
<div class="line"><a id="l00212" name="l00212"></a><span class="lineno"> 212</span> </div>
<div class="line"><a id="l00213" name="l00213"></a><span class="lineno"> 213</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator&gt;</div>
<div class="line"><a id="l00214" name="l00214"></a><span class="lineno"> 214</span><span class="keyword">struct </span>is_planar&lt;memory_based_step_iterator&lt;Iterator&gt;&gt; : <span class="keyword">public</span> is_planar&lt;Iterator&gt; {};</div>
<div class="line"><a id="l00215" name="l00215"></a><span class="lineno"> 215</span> </div>
<div class="line"><a id="l00216" name="l00216"></a><span class="lineno"> 216</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator&gt;</div>
<div class="line"><a id="l00217" name="l00217"></a><span class="lineno"> 217</span><span class="keyword">struct </span>channel_type&lt;memory_based_step_iterator&lt;Iterator&gt;&gt; : <span class="keyword">public</span> channel_type&lt;Iterator&gt; {};</div>
<div class="line"><a id="l00218" name="l00218"></a><span class="lineno"> 218</span> </div>
<div class="line"><a id="l00220" name="l00220"></a><span class="lineno"> 220</span><span class="comment">// MemoryBasedIteratorConcept</span></div>
<div class="line"><a id="l00222" name="l00222"></a><span class="lineno"> 222</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator&gt;</div>
<div class="line"><a id="l00223" name="l00223"></a><span class="lineno"> 223</span><span class="keyword">struct </span>byte_to_memunit&lt;memory_based_step_iterator&lt;Iterator&gt;&gt; : <span class="keyword">public</span> byte_to_memunit&lt;Iterator&gt; {};</div>
<div class="line"><a id="l00224" name="l00224"></a><span class="lineno"> 224</span> </div>
<div class="line"><a id="l00225" name="l00225"></a><span class="lineno"> 225</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator&gt;</div>
<div class="line"><a id="l00226" name="l00226"></a><span class="lineno"> 226</span><span class="keyword">inline</span> <span class="keyword">auto</span> memunit_step(memory_based_step_iterator&lt;Iterator&gt; <span class="keyword">const</span>&amp; p) -&gt; std::ptrdiff_t { <span class="keywordflow">return</span> p.step(); }</div>
<div class="line"><a id="l00227" name="l00227"></a><span class="lineno"> 227</span> </div>
<div class="line"><a id="l00228" name="l00228"></a><span class="lineno"> 228</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator&gt;</div>
<div class="line"><a id="l00229" name="l00229"></a><span class="lineno"> 229</span><span class="keyword">inline</span> <span class="keyword">auto</span> memunit_distance(memory_based_step_iterator&lt;Iterator&gt; <span class="keyword">const</span>&amp; p1, memory_based_step_iterator&lt;Iterator&gt; <span class="keyword">const</span>&amp; p2)</div>
<div class="line"><a id="l00230" name="l00230"></a><span class="lineno"> 230</span> -&gt; std::ptrdiff_t</div>
<div class="line"><a id="l00231" name="l00231"></a><span class="lineno"> 231</span>{</div>
<div class="line"><a id="l00232" name="l00232"></a><span class="lineno"> 232</span> <span class="keywordflow">return</span> memunit_distance(p1.base(),p2.base());</div>
<div class="line"><a id="l00233" name="l00233"></a><span class="lineno"> 233</span>}</div>
<div class="line"><a id="l00234" name="l00234"></a><span class="lineno"> 234</span> </div>
<div class="line"><a id="l00235" name="l00235"></a><span class="lineno"> 235</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator&gt;</div>
<div class="line"><a id="l00236" name="l00236"></a><span class="lineno"> 236</span><span class="keyword">inline</span> <span class="keywordtype">void</span> memunit_advance(memory_based_step_iterator&lt;Iterator&gt;&amp; p,</div>
<div class="line"><a id="l00237" name="l00237"></a><span class="lineno"> 237</span> std::ptrdiff_t diff) {</div>
<div class="line"><a id="l00238" name="l00238"></a><span class="lineno"> 238</span> memunit_advance(p.base(), diff);</div>
<div class="line"><a id="l00239" name="l00239"></a><span class="lineno"> 239</span>}</div>
<div class="line"><a id="l00240" name="l00240"></a><span class="lineno"> 240</span> </div>
<div class="line"><a id="l00241" name="l00241"></a><span class="lineno"> 241</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator&gt;</div>
<div class="line"><a id="l00242" name="l00242"></a><span class="lineno"> 242</span><span class="keyword">inline</span> <span class="keyword">auto</span> memunit_advanced(<span class="keyword">const</span> memory_based_step_iterator&lt;Iterator&gt;&amp; p, std::ptrdiff_t diff)</div>
<div class="line"><a id="l00243" name="l00243"></a><span class="lineno"> 243</span> -&gt; memory_based_step_iterator&lt;Iterator&gt;</div>
<div class="line"><a id="l00244" name="l00244"></a><span class="lineno"> 244</span>{</div>
<div class="line"><a id="l00245" name="l00245"></a><span class="lineno"> 245</span> <span class="keywordflow">return</span> memory_based_step_iterator&lt;Iterator&gt;(memunit_advanced(p.base(), diff),p.step());</div>
<div class="line"><a id="l00246" name="l00246"></a><span class="lineno"> 246</span>}</div>
<div class="line"><a id="l00247" name="l00247"></a><span class="lineno"> 247</span> </div>
<div class="line"><a id="l00248" name="l00248"></a><span class="lineno"> 248</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator&gt;</div>
<div class="line"><a id="l00249" name="l00249"></a><span class="lineno"> 249</span><span class="keyword">inline</span> <span class="keyword">auto</span> memunit_advanced_ref(<span class="keyword">const</span> memory_based_step_iterator&lt;Iterator&gt;&amp; p, std::ptrdiff_t diff)</div>
<div class="line"><a id="l00250" name="l00250"></a><span class="lineno"> 250</span> -&gt; <span class="keyword">typename</span> std::iterator_traits&lt;Iterator&gt;::reference</div>
<div class="line"><a id="l00251" name="l00251"></a><span class="lineno"> 251</span>{</div>
<div class="line"><a id="l00252" name="l00252"></a><span class="lineno"> 252</span> <span class="keywordflow">return</span> memunit_advanced_ref(p.base(), diff);</div>
<div class="line"><a id="l00253" name="l00253"></a><span class="lineno"> 253</span>}</div>
<div class="line"><a id="l00254" name="l00254"></a><span class="lineno"> 254</span> </div>
<div class="line"><a id="l00256" name="l00256"></a><span class="lineno"> 256</span><span class="comment">// HasDynamicXStepTypeConcept</span></div>
<div class="line"><a id="l00258" name="l00258"></a><span class="lineno"> 258</span> </div>
<div class="line"><a id="l00259" name="l00259"></a><span class="lineno"> 259</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator&gt;</div>
<div class="line"><a id="l00260" name="l00260"></a><span class="lineno"> 260</span><span class="keyword">struct </span>dynamic_x_step_type&lt;memory_based_step_iterator&lt;Iterator&gt;&gt; {</div>
<div class="line"><a id="l00261" name="l00261"></a><span class="lineno"> 261</span> <span class="keyword">using </span>type = memory_based_step_iterator&lt;Iterator&gt;;</div>
<div class="line"><a id="l00262" name="l00262"></a><span class="lineno"> 262</span>};</div>
<div class="line"><a id="l00263" name="l00263"></a><span class="lineno"> 263</span> </div>
<div class="line"><a id="l00264" name="l00264"></a><span class="lineno"> 264</span><span class="comment">// For step iterators, pass the function object to the base</span></div>
<div class="line"><a id="l00265" name="l00265"></a><span class="lineno"> 265</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator, <span class="keyword">typename</span> Deref&gt;</div>
<div class="line"><a id="l00266" name="l00266"></a><span class="lineno"> 266</span><span class="keyword">struct </span>iterator_add_deref&lt;memory_based_step_iterator&lt;Iterator&gt;,Deref&gt; {</div>
<div class="line"><a id="l00267" name="l00267"></a><span class="lineno"> 267</span> BOOST_GIL_CLASS_REQUIRE(Deref, boost::gil, PixelDereferenceAdaptorConcept)</div>
<div class="line"><a id="l00268" name="l00268"></a><span class="lineno"> 268</span> </div>
<div class="line"><a id="l00269" name="l00269"></a><span class="lineno"> 269</span> <span class="keyword">using </span>type = memory_based_step_iterator&lt;typename iterator_add_deref&lt;Iterator, Deref&gt;::type&gt;;</div>
<div class="line"><a id="l00270" name="l00270"></a><span class="lineno"> 270</span> </div>
<div class="line"><a id="l00271" name="l00271"></a><span class="lineno"> 271</span> <span class="keyword">static</span> type make(<span class="keyword">const</span> memory_based_step_iterator&lt;Iterator&gt;&amp; it, <span class="keyword">const</span> Deref&amp; d)</div>
<div class="line"><a id="l00272" name="l00272"></a><span class="lineno"> 272</span> {</div>
<div class="line"><a id="l00273" name="l00273"></a><span class="lineno"> 273</span> <span class="keywordflow">return</span> type(iterator_add_deref&lt;Iterator, Deref&gt;::make(it.base(),d),it.step());</div>
<div class="line"><a id="l00274" name="l00274"></a><span class="lineno"> 274</span> }</div>
<div class="line"><a id="l00275" name="l00275"></a><span class="lineno"> 275</span>};</div>
<div class="line"><a id="l00276" name="l00276"></a><span class="lineno"> 276</span> </div>
<div class="line"><a id="l00280" name="l00280"></a><span class="lineno"> 280</span> </div>
<div class="line"><a id="l00281" name="l00281"></a><span class="lineno"> 281</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> I&gt; <span class="keyword">typename</span> dynamic_x_step_type&lt;I&gt;::type make_step_iterator(<span class="keyword">const</span> I&amp; it, std::ptrdiff_t step);</div>
<div class="line"><a id="l00282" name="l00282"></a><span class="lineno"> 282</span> </div>
<div class="line"><a id="l00283" name="l00283"></a><span class="lineno"> 283</span><span class="keyword">namespace </span>detail {</div>
<div class="line"><a id="l00284" name="l00284"></a><span class="lineno"> 284</span> </div>
<div class="line"><a id="l00285" name="l00285"></a><span class="lineno"> 285</span><span class="comment">// if the iterator is a plain base iterator (non-adaptor), wraps it in memory_based_step_iterator</span></div>
<div class="line"><a id="l00286" name="l00286"></a><span class="lineno"> 286</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> I&gt;</div>
<div class="line"><a id="l00287" name="l00287"></a><span class="lineno"> 287</span><span class="keyword">auto</span> make_step_iterator_impl(I <span class="keyword">const</span>&amp; it, std::ptrdiff_t step, std::false_type)</div>
<div class="line"><a id="l00288" name="l00288"></a><span class="lineno"> 288</span> -&gt; <span class="keyword">typename</span> dynamic_x_step_type&lt;I&gt;::type</div>
<div class="line"><a id="l00289" name="l00289"></a><span class="lineno"> 289</span>{</div>
<div class="line"><a id="l00290" name="l00290"></a><span class="lineno"> 290</span> <span class="keywordflow">return</span> memory_based_step_iterator&lt;I&gt;(it, step);</div>
<div class="line"><a id="l00291" name="l00291"></a><span class="lineno"> 291</span>}</div>
<div class="line"><a id="l00292" name="l00292"></a><span class="lineno"> 292</span> </div>
<div class="line"><a id="l00293" name="l00293"></a><span class="lineno"> 293</span><span class="comment">// If the iterator is compound, put the step in its base</span></div>
<div class="line"><a id="l00294" name="l00294"></a><span class="lineno"> 294</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> I&gt;</div>
<div class="line"><a id="l00295" name="l00295"></a><span class="lineno"> 295</span><span class="keyword">auto</span> make_step_iterator_impl(I <span class="keyword">const</span>&amp; it, std::ptrdiff_t step, std::true_type)</div>
<div class="line"><a id="l00296" name="l00296"></a><span class="lineno"> 296</span> -&gt; <span class="keyword">typename</span> dynamic_x_step_type&lt;I&gt;::type</div>
<div class="line"><a id="l00297" name="l00297"></a><span class="lineno"> 297</span>{</div>
<div class="line"><a id="l00298" name="l00298"></a><span class="lineno"> 298</span> <span class="keywordflow">return</span> make_step_iterator(it.base(), step);</div>
<div class="line"><a id="l00299" name="l00299"></a><span class="lineno"> 299</span>}</div>
<div class="line"><a id="l00300" name="l00300"></a><span class="lineno"> 300</span> </div>
<div class="line"><a id="l00301" name="l00301"></a><span class="lineno"> 301</span><span class="comment">// If the iterator is memory_based_step_iterator, change the step</span></div>
<div class="line"><a id="l00302" name="l00302"></a><span class="lineno"> 302</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> BaseIt&gt;</div>
<div class="line"><a id="l00303" name="l00303"></a><span class="lineno"> 303</span><span class="keyword">auto</span> make_step_iterator_impl(</div>
<div class="line"><a id="l00304" name="l00304"></a><span class="lineno"> 304</span> memory_based_step_iterator&lt;BaseIt&gt; <span class="keyword">const</span>&amp; it,</div>
<div class="line"><a id="l00305" name="l00305"></a><span class="lineno"> 305</span> std::ptrdiff_t step,</div>
<div class="line"><a id="l00306" name="l00306"></a><span class="lineno"> 306</span> std::true_type)</div>
<div class="line"><a id="l00307" name="l00307"></a><span class="lineno"> 307</span> -&gt; memory_based_step_iterator&lt;BaseIt&gt;</div>
<div class="line"><a id="l00308" name="l00308"></a><span class="lineno"> 308</span>{</div>
<div class="line"><a id="l00309" name="l00309"></a><span class="lineno"> 309</span> <span class="keywordflow">return</span> memory_based_step_iterator&lt;BaseIt&gt;(it.base(), step);</div>
<div class="line"><a id="l00310" name="l00310"></a><span class="lineno"> 310</span>}</div>
<div class="line"><a id="l00311" name="l00311"></a><span class="lineno"> 311</span> </div>
<div class="line"><a id="l00312" name="l00312"></a><span class="lineno"> 312</span>} <span class="comment">// namespace detail</span></div>
<div class="line"><a id="l00313" name="l00313"></a><span class="lineno"> 313</span> </div>
<div class="line"><a id="l00327" name="l00327"></a><span class="lineno"> 327</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> I&gt; <span class="comment">// Models MemoryBasedIteratorConcept, HasDynamicXStepTypeConcept</span></div>
<div class="line"><a id="l00328" name="l00328"></a><span class="lineno"> 328</span><span class="keyword">inline</span> <span class="keyword">auto</span> make_step_iterator(I <span class="keyword">const</span>&amp; it, std::ptrdiff_t step)</div>
<div class="line"><a id="l00329" name="l00329"></a><span class="lineno"> 329</span> -&gt; <span class="keyword">typename</span> dynamic_x_step_type&lt;I&gt;::type</div>
<div class="line"><a id="l00330" name="l00330"></a><span class="lineno"> 330</span>{</div>
<div class="line"><a id="l00331" name="l00331"></a><span class="lineno"> 331</span> <span class="keywordflow">return</span> detail::make_step_iterator_impl(it, step, <span class="keyword">typename</span> is_iterator_adaptor&lt;I&gt;::type());</div>
<div class="line"><a id="l00332" name="l00332"></a><span class="lineno"> 332</span>}</div>
<div class="line"><a id="l00333" name="l00333"></a><span class="lineno"> 333</span> </div>
<div class="line"><a id="l00334" name="l00334"></a><span class="lineno"> 334</span>}} <span class="comment">// namespace boost::gil</span></div>
<div class="line"><a id="l00335" name="l00335"></a><span class="lineno"> 335</span> </div>
<div class="line"><a id="l00336" name="l00336"></a><span class="lineno"> 336</span><span class="preprocessor">#endif</span></div>
<div class="ttc" id="aclassboost_1_1gil_1_1detail_1_1step__iterator__adaptor_html"><div class="ttname"><a href="classboost_1_1gil_1_1detail_1_1step__iterator__adaptor.html">boost::gil::detail::step_iterator_adaptor</a></div><div class="ttdoc">An adaptor over an existing iterator that changes the step unit.</div><div class="ttdef"><b>Definition</b> step_iterator.hpp:42</div></div>
<div class="ttc" id="aclassboost_1_1gil_1_1memory__based__step__iterator_html"><div class="ttname"><a href="classboost_1_1gil_1_1memory__based__step__iterator.html">boost::gil::memory_based_step_iterator</a></div><div class="ttdoc">MEMORY-BASED STEP ITERATOR.</div><div class="ttdef"><b>Definition</b> step_iterator.hpp:149</div></div>
<div class="ttc" id="aclassboost_1_1gil_1_1memory__based__step__iterator_html_a3832fa78e567d765df5630ec4555a659"><div class="ttname"><a href="classboost_1_1gil_1_1memory__based__step__iterator.html#a3832fa78e567d765df5630ec4555a659">boost::gil::memory_based_step_iterator::operator[]</a></div><div class="ttdeci">auto operator[](difference_type d) const -&gt; reference</div><div class="ttdef"><b>Definition</b> step_iterator.hpp:167</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_memory_based_iterator_concept_html"><div class="ttname"><a href="structboost_1_1gil_1_1_memory_based_iterator_concept.html">boost::gil::MemoryBasedIteratorConcept</a></div><div class="ttdoc">Concept of a random-access iterator that can be advanced in memory units (bytes or bits)</div><div class="ttdef"><b>Definition</b> concepts/pixel_iterator.hpp:237</div></div>
<div class="ttc" id="astructboost_1_1gil_1_1memunit__step__fn_html"><div class="ttname"><a href="structboost_1_1gil_1_1memunit__step__fn.html">boost::gil::memunit_step_fn</a></div><div class="ttdoc">function object that returns the memory unit distance between two iterators and advances a given iter...</div><div class="ttdef"><b>Definition</b> step_iterator.hpp:126</div></div>
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