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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">//</span></div><div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment">// Copyright 2005-2007 Adobe Systems Incorporated</span></div><div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment">//</span></div><div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment">// Distributed under the Boost Software License, Version 1.0</span></div><div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment">// See accompanying file LICENSE_1_0.txt or copy at</span></div><div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment">// http://www.boost.org/LICENSE_1_0.txt</span></div><div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment">//</span></div><div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="preprocessor">#ifndef BOOST_GIL_CONCEPTS_PIXEL_ITERATOR_HPP</span></div><div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="preprocessor">#define BOOST_GIL_CONCEPTS_PIXEL_ITERATOR_HPP</span></div><div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;</div><div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="preprocessor">#include &lt;boost/gil/concepts/channel.hpp&gt;</span></div><div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="preprocessor">#include &lt;boost/gil/concepts/color.hpp&gt;</span></div><div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="preprocessor">#include &lt;boost/gil/concepts/concept_check.hpp&gt;</span></div><div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="preprocessor">#include &lt;boost/gil/concepts/fwd.hpp&gt;</span></div><div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="preprocessor">#include &lt;boost/gil/concepts/pixel.hpp&gt;</span></div><div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="preprocessor">#include &lt;boost/gil/concepts/pixel_based.hpp&gt;</span></div><div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;</div><div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="preprocessor">#include &lt;boost/iterator/iterator_concepts.hpp&gt;</span></div><div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;</div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="preprocessor">#include &lt;cstddef&gt;</span></div><div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="preprocessor">#include &lt;iterator&gt;</span></div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="preprocessor">#include &lt;type_traits&gt;</span></div><div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;</div><div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="preprocessor">#if defined(BOOST_CLANG)</span></div><div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="preprocessor">#pragma clang diagnostic push</span></div><div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="preprocessor">#pragma clang diagnostic ignored &quot;-Wunused-local-typedefs&quot;</span></div><div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;</div><div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="preprocessor">#if defined(BOOST_GCC) &amp;&amp; (BOOST_GCC &gt;= 40900)</span></div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="preprocessor">#pragma GCC diagnostic push</span></div><div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="preprocessor">#pragma GCC diagnostic ignored &quot;-Wunused-local-typedefs&quot;</span></div><div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;</div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="keyword">namespace </span>boost { <span class="keyword">namespace </span>gil {</div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;</div><div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;<span class="comment">// Forward declarations</span></div><div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> It&gt; <span class="keyword">struct </span>const_iterator_type;</div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> It&gt; <span class="keyword">struct </span>iterator_is_mutable;</div><div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> It&gt; <span class="keyword">struct </span>is_iterator_adaptor;</div><div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> It, <span class="keyword">typename</span> NewBaseIt&gt; <span class="keyword">struct </span>iterator_adaptor_rebind;</div><div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> It&gt; <span class="keyword">struct </span>iterator_adaptor_get_base;</div><div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;</div><div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;<span class="comment">// These iterator mutability concepts are taken from Boost concept_check.hpp.</span></div><div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;<span class="comment">// Isolating mutability to result in faster compile time</span></div><div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;<span class="keyword">namespace </span>detail {</div><div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;</div><div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;<span class="comment">// Preconditions: TT Models boost_concepts::ForwardTraversalConcept</span></div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> TT&gt;</div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;<span class="keyword">struct </span>ForwardIteratorIsMutableConcept</div><div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;{</div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;    <span class="keywordtype">void</span> constraints()</div><div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;    {</div><div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;        <span class="keyword">auto</span> <span class="keyword">const</span> tmp = *i;</div><div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;        *i++ = tmp; <span class="comment">// require postincrement and assignment</span></div><div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;    }</div><div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;    TT i;</div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;};</div><div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;</div><div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;<span class="comment">// Preconditions: TT Models boost::BidirectionalIteratorConcept</span></div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> TT&gt;</div><div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;<span class="keyword">struct </span>BidirectionalIteratorIsMutableConcept</div><div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;{</div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;    <span class="keywordtype">void</span> constraints()</div><div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;    {</div><div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;        gil_function_requires&lt; ForwardIteratorIsMutableConcept&lt;TT&gt;&gt;();</div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;        <span class="keyword">auto</span> <span class="keyword">const</span> tmp = *i;</div><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;        *i-- = tmp; <span class="comment">// require postdecrement and assignment</span></div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;    }</div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;    TT i;</div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;};</div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;</div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;<span class="comment">// Preconditions: TT Models boost_concepts::RandomAccessTraversalConcept</span></div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> TT&gt;</div><div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;<span class="keyword">struct </span>RandomAccessIteratorIsMutableConcept</div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;{</div><div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;    <span class="keywordtype">void</span> constraints()</div><div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;    {</div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;        gil_function_requires&lt;BidirectionalIteratorIsMutableConcept&lt;TT&gt;&gt;();</div><div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;</div><div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;        <span class="keyword">typename</span> std::iterator_traits&lt;TT&gt;::difference_type n = 0;</div><div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;        ignore_unused_variable_warning(n);</div><div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;        i[n] = *i; <span class="comment">// require element access and assignment</span></div><div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;    }</div><div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;    TT i;</div><div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;};</div><div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;</div><div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;<span class="comment">// Iterators that can be used as the base of memory_based_step_iterator require some additional functions</span></div><div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;<span class="comment">// \tparam Iterator Models boost_concepts::RandomAccessTraversalConcept</span></div><div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator&gt;</div><div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;<span class="keyword">struct </span>RandomAccessIteratorIsMemoryBasedConcept</div><div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;{</div><div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;    <span class="keywordtype">void</span> constraints()</div><div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;    {</div><div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;        std::ptrdiff_t bs = memunit_step(it);</div><div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;        ignore_unused_variable_warning(bs);</div><div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;</div><div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;        it = memunit_advanced(it, 3);</div><div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;        std::ptrdiff_t bd = memunit_distance(it, it);</div><div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;        ignore_unused_variable_warning(bd);</div><div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;</div><div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;        memunit_advance(it,3);</div><div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;        <span class="comment">// for performace you may also provide a customized implementation of memunit_advanced_ref</span></div><div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;    }</div><div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;    Iterator it;</div><div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;};</div><div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;</div><div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator&gt;</div><div class="line"><a name="l00109"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1detail_1_1_pixel_iterator_is_mutable_concept.html">  109</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1detail_1_1_pixel_iterator_is_mutable_concept.html">PixelIteratorIsMutableConcept</a></div><div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;{</div><div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;    <span class="keywordtype">void</span> constraints()</div><div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;    {</div><div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;        gil_function_requires&lt;detail::RandomAccessIteratorIsMutableConcept&lt;Iterator&gt;&gt;();</div><div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;</div><div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;        <span class="keyword">using</span> ref_t = <span class="keyword">typename</span> std::remove_reference</div><div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;            &lt;</div><div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;                <span class="keyword">typename</span> std::iterator_traits&lt;Iterator&gt;::reference</div><div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;            &gt;::type;</div><div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;        <span class="keyword">using</span> channel_t = <span class="keyword">typename</span> <a class="code" href="structboost_1_1gil_1_1element__type.html">element_type&lt;ref_t&gt;::type</a>;</div><div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;        gil_function_requires&lt;detail::ChannelIsMutableConcept&lt;channel_t&gt;&gt;();</div><div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;    }</div><div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;};</div><div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;</div><div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;} <span class="comment">// namespace detail</span></div><div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;</div><div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00136"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1_has_transposed_type_concept.html">  136</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1_has_transposed_type_concept.html">HasTransposedTypeConcept</a></div><div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;{</div><div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;    <span class="keywordtype">void</span> constraints()</div><div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;    {</div><div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;        <span class="keyword">using</span> type = <span class="keyword">typename</span> transposed_type&lt;T&gt;::type;</div><div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;        ignore_unused_variable_warning(type{});</div><div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;    }</div><div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;};</div><div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;</div><div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;</div><div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator&gt;</div><div class="line"><a name="l00169"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1_pixel_iterator_concept.html">  169</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1_pixel_iterator_concept.html">PixelIteratorConcept</a></div><div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;{</div><div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;    <span class="keywordtype">void</span> constraints()</div><div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;    {</div><div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;        gil_function_requires&lt;boost_concepts::RandomAccessTraversalConcept&lt;Iterator&gt;&gt;();</div><div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;        gil_function_requires&lt;PixelBasedConcept&lt;Iterator&gt;&gt;();</div><div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;</div><div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;        <span class="keyword">using</span> value_type = <span class="keyword">typename</span> std::iterator_traits&lt;Iterator&gt;::value_type;</div><div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;        gil_function_requires&lt;PixelValueConcept&lt;value_type&gt;&gt;();</div><div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;</div><div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;        <span class="keyword">using</span> const_t = <span class="keyword">typename</span> <a class="code" href="structboost_1_1gil_1_1const__iterator__type.html">const_iterator_type&lt;Iterator&gt;::type</a>;</div><div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;        <span class="keyword">static</span> <span class="keywordtype">bool</span> <span class="keyword">const</span> is_mutable = <a class="code" href="structboost_1_1gil_1_1iterator__is__mutable.html">iterator_is_mutable&lt;Iterator&gt;::value</a>;</div><div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;        ignore_unused_variable_warning(is_mutable);</div><div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;</div><div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;        <span class="comment">// immutable iterator must be constructible from (possibly mutable) iterator</span></div><div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;        const_t const_it(it);</div><div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;        ignore_unused_variable_warning(const_it);</div><div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;</div><div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;        check_base(<span class="keyword">typename</span> <a class="code" href="structboost_1_1gil_1_1is__iterator__adaptor.html">is_iterator_adaptor&lt;Iterator&gt;::type</a>());</div><div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;    }</div><div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;</div><div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;    <span class="keywordtype">void</span> check_base(std::false_type) {}</div><div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;</div><div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;    <span class="keywordtype">void</span> check_base(std::true_type)</div><div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;    {</div><div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;        <span class="keyword">using</span> base_t = <span class="keyword">typename</span> <a class="code" href="structboost_1_1gil_1_1iterator__adaptor__get__base.html">iterator_adaptor_get_base&lt;Iterator&gt;::type</a>;</div><div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;        gil_function_requires&lt;PixelIteratorConcept&lt;base_t&gt;&gt;();</div><div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;    }</div><div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;</div><div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;    Iterator it;</div><div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;};</div><div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;</div><div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator&gt;</div><div class="line"><a name="l00208"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1_mutable_pixel_iterator_concept.html">  208</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1_mutable_pixel_iterator_concept.html">MutablePixelIteratorConcept</a></div><div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;{</div><div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;    <span class="keywordtype">void</span> constraints()</div><div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;    {</div><div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;        gil_function_requires&lt;PixelIteratorConcept&lt;Iterator&gt;&gt;();</div><div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;        gil_function_requires&lt;detail::PixelIteratorIsMutableConcept&lt;Iterator&gt;&gt;();</div><div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;    }</div><div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;};</div><div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;</div><div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;</div><div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator&gt;</div><div class="line"><a name="l00235"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1_memory_based_iterator_concept.html">  235</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1_memory_based_iterator_concept.html">MemoryBasedIteratorConcept</a></div><div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;{</div><div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;    <span class="keywordtype">void</span> constraints()</div><div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;    {</div><div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;        gil_function_requires&lt;boost_concepts::RandomAccessTraversalConcept&lt;Iterator&gt;&gt;();</div><div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;        gil_function_requires&lt;detail::RandomAccessIteratorIsMemoryBasedConcept&lt;Iterator&gt;&gt;();</div><div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;    }</div><div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;};</div><div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;</div><div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator&gt;</div><div class="line"><a name="l00256"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1_step_iterator_concept.html">  256</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1_step_iterator_concept.html">StepIteratorConcept</a></div><div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;{</div><div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;    <span class="keywordtype">void</span> constraints()</div><div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;    {</div><div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;        gil_function_requires&lt;boost_concepts::ForwardTraversalConcept&lt;Iterator&gt;&gt;();</div><div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;        it.set_step(0);</div><div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;    }</div><div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;    Iterator it;</div><div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;};</div><div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;</div><div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;</div><div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator&gt;</div><div class="line"><a name="l00274"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1_mutable_step_iterator_concept.html">  274</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1_mutable_step_iterator_concept.html">MutableStepIteratorConcept</a></div><div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;{</div><div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;    <span class="keywordtype">void</span> constraints()</div><div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;    {</div><div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;        gil_function_requires&lt;StepIteratorConcept&lt;Iterator&gt;&gt;();</div><div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;        gil_function_requires&lt;detail::ForwardIteratorIsMutableConcept&lt;Iterator&gt;&gt;();</div><div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;    }</div><div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;};</div><div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;</div><div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;</div><div class="line"><a name="l00315"></a><span class="lineno">  315</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator&gt;</div><div class="line"><a name="l00316"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1_iterator_adaptor_concept.html">  316</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1_iterator_adaptor_concept.html">IteratorAdaptorConcept</a></div><div class="line"><a name="l00317"></a><span class="lineno">  317</span>&#160;{</div><div class="line"><a name="l00318"></a><span class="lineno">  318</span>&#160;    <span class="keywordtype">void</span> constraints()</div><div class="line"><a name="l00319"></a><span class="lineno">  319</span>&#160;    {</div><div class="line"><a name="l00320"></a><span class="lineno">  320</span>&#160;        gil_function_requires&lt;boost_concepts::ForwardTraversalConcept&lt;Iterator&gt;&gt;();</div><div class="line"><a name="l00321"></a><span class="lineno">  321</span>&#160;</div><div class="line"><a name="l00322"></a><span class="lineno">  322</span>&#160;        <span class="keyword">using</span> base_t = <span class="keyword">typename</span> <a class="code" href="structboost_1_1gil_1_1iterator__adaptor__get__base.html">iterator_adaptor_get_base&lt;Iterator&gt;::type</a>;</div><div class="line"><a name="l00323"></a><span class="lineno">  323</span>&#160;        gil_function_requires&lt;boost_concepts::ForwardTraversalConcept&lt;base_t&gt;&gt;();</div><div class="line"><a name="l00324"></a><span class="lineno">  324</span>&#160;</div><div class="line"><a name="l00325"></a><span class="lineno">  325</span>&#160;        static_assert(<a class="code" href="structboost_1_1gil_1_1is__iterator__adaptor.html">is_iterator_adaptor&lt;Iterator&gt;::value</a>, <span class="stringliteral">&quot;&quot;</span>);</div><div class="line"><a name="l00326"></a><span class="lineno">  326</span>&#160;        <span class="keyword">using</span> rebind_t = <span class="keyword">typename</span> <a class="code" href="structboost_1_1gil_1_1iterator__adaptor__rebind.html">iterator_adaptor_rebind&lt;Iterator, void*&gt;::type</a>;</div><div class="line"><a name="l00327"></a><span class="lineno">  327</span>&#160;</div><div class="line"><a name="l00328"></a><span class="lineno">  328</span>&#160;        base_t base = it.base();</div><div class="line"><a name="l00329"></a><span class="lineno">  329</span>&#160;        ignore_unused_variable_warning(base);</div><div class="line"><a name="l00330"></a><span class="lineno">  330</span>&#160;    }</div><div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160;    Iterator it;</div><div class="line"><a name="l00332"></a><span class="lineno">  332</span>&#160;};</div><div class="line"><a name="l00333"></a><span class="lineno">  333</span>&#160;</div><div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator&gt;</div><div class="line"><a name="l00341"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1_mutable_iterator_adaptor_concept.html">  341</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1_mutable_iterator_adaptor_concept.html">MutableIteratorAdaptorConcept</a></div><div class="line"><a name="l00342"></a><span class="lineno">  342</span>&#160;{</div><div class="line"><a name="l00343"></a><span class="lineno">  343</span>&#160;    <span class="keywordtype">void</span> constraints()</div><div class="line"><a name="l00344"></a><span class="lineno">  344</span>&#160;    {</div><div class="line"><a name="l00345"></a><span class="lineno">  345</span>&#160;        gil_function_requires&lt;IteratorAdaptorConcept&lt;Iterator&gt;&gt;();</div><div class="line"><a name="l00346"></a><span class="lineno">  346</span>&#160;        gil_function_requires&lt;detail::ForwardIteratorIsMutableConcept&lt;Iterator&gt;&gt;();</div><div class="line"><a name="l00347"></a><span class="lineno">  347</span>&#160;    }</div><div class="line"><a name="l00348"></a><span class="lineno">  348</span>&#160;};</div><div class="line"><a name="l00349"></a><span class="lineno">  349</span>&#160;</div><div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160;}} <span class="comment">// namespace boost::gil</span></div><div class="line"><a name="l00351"></a><span class="lineno">  351</span>&#160;</div><div class="line"><a name="l00352"></a><span class="lineno">  352</span>&#160;<span class="preprocessor">#if defined(BOOST_CLANG)</span></div><div class="line"><a name="l00353"></a><span class="lineno">  353</span>&#160;<span class="preprocessor">#pragma clang diagnostic pop</span></div><div class="line"><a name="l00354"></a><span class="lineno">  354</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00355"></a><span class="lineno">  355</span>&#160;</div><div class="line"><a name="l00356"></a><span class="lineno">  356</span>&#160;<span class="preprocessor">#if defined(BOOST_GCC) &amp;&amp; (BOOST_GCC &gt;= 40900)</span></div><div class="line"><a name="l00357"></a><span class="lineno">  357</span>&#160;<span class="preprocessor">#pragma GCC diagnostic pop</span></div><div class="line"><a name="l00358"></a><span class="lineno">  358</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00359"></a><span class="lineno">  359</span>&#160;</div><div class="line"><a name="l00360"></a><span class="lineno">  360</span>&#160;<span class="preprocessor">#endif</span></div><div class="ttc" id="structboost_1_1gil_1_1is__iterator__adaptor_html"><div class="ttname"><a href="structboost_1_1gil_1_1is__iterator__adaptor.html">boost::gil::is_iterator_adaptor</a></div><div class="ttdoc">metafunction predicate determining whether the given iterator is a plain one or an adaptor over anoth...</div><div class="ttdef"><b>Definition:</b> metafunctions.hpp:34</div></div>
  51 <div class="ttc" id="structboost_1_1gil_1_1_mutable_pixel_iterator_concept_html"><div class="ttname"><a href="structboost_1_1gil_1_1_mutable_pixel_iterator_concept.html">boost::gil::MutablePixelIteratorConcept</a></div><div class="ttdoc">Pixel iterator that allows for changing its pixel.</div><div class="ttdef"><b>Definition:</b> concepts/pixel_iterator.hpp:208</div></div>
  52 <div class="ttc" id="structboost_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:235</div></div>
  53 <div class="ttc" id="structboost_1_1gil_1_1iterator__adaptor__get__base_html"><div class="ttname"><a href="structboost_1_1gil_1_1iterator__adaptor__get__base.html">boost::gil::iterator_adaptor_get_base</a></div><div class="ttdoc">returns the base iterator for a given iterator adaptor. Provide an specialization when introducing ne...</div><div class="ttdef"><b>Definition:</b> metafunctions.hpp:35</div></div>
  54 <div class="ttc" id="structboost_1_1gil_1_1_iterator_adaptor_concept_html"><div class="ttname"><a href="structboost_1_1gil_1_1_iterator_adaptor_concept.html">boost::gil::IteratorAdaptorConcept</a></div><div class="ttdoc">Iterator adaptor is a forward iterator adapting another forward iterator.</div><div class="ttdef"><b>Definition:</b> concepts/pixel_iterator.hpp:316</div></div>
  55 <div class="ttc" id="structboost_1_1gil_1_1_mutable_step_iterator_concept_html"><div class="ttname"><a href="structboost_1_1gil_1_1_mutable_step_iterator_concept.html">boost::gil::MutableStepIteratorConcept</a></div><div class="ttdoc">Step iterator that allows for modifying its current value.</div><div class="ttdef"><b>Definition:</b> concepts/pixel_iterator.hpp:274</div></div>
  56 <div class="ttc" id="structboost_1_1gil_1_1element__type_html"><div class="ttname"><a href="structboost_1_1gil_1_1element__type.html">boost::gil::element_type</a></div><div class="ttdoc">Specifies the element type of a homogeneous color base.</div><div class="ttdef"><b>Definition:</b> color_base_algorithm.hpp:221</div></div>
  57 <div class="ttc" id="structboost_1_1gil_1_1_has_transposed_type_concept_html"><div class="ttname"><a href="structboost_1_1gil_1_1_has_transposed_type_concept.html">boost::gil::HasTransposedTypeConcept</a></div><div class="ttdoc">Concept for locators and views that can define a type just like the given locator or view,...</div><div class="ttdef"><b>Definition:</b> concepts/pixel_iterator.hpp:136</div></div>
  58 <div class="ttc" id="structboost_1_1gil_1_1iterator__adaptor__rebind_html"><div class="ttname"><a href="structboost_1_1gil_1_1iterator__adaptor__rebind.html">boost::gil::iterator_adaptor_rebind</a></div><div class="ttdoc">Changes the base iterator of an iterator adaptor. Provide an specialization when introducing new iter...</div><div class="ttdef"><b>Definition:</b> pixel_iterator.hpp:36</div></div>
  59 <div class="ttc" id="structboost_1_1gil_1_1_mutable_iterator_adaptor_concept_html"><div class="ttname"><a href="structboost_1_1gil_1_1_mutable_iterator_adaptor_concept.html">boost::gil::MutableIteratorAdaptorConcept</a></div><div class="ttdoc">Iterator adaptor that is mutable.</div><div class="ttdef"><b>Definition:</b> concepts/pixel_iterator.hpp:341</div></div>
  60 <div class="ttc" id="structboost_1_1gil_1_1iterator__is__mutable_html"><div class="ttname"><a href="structboost_1_1gil_1_1iterator__is__mutable.html">boost::gil::iterator_is_mutable</a></div><div class="ttdoc">Metafunction predicate returning whether the given iterator allows for changing its values.</div><div class="ttdef"><b>Definition:</b> pixel_iterator.hpp:49</div></div>
  61 <div class="ttc" id="structboost_1_1gil_1_1detail_1_1_pixel_iterator_is_mutable_concept_html"><div class="ttname"><a href="structboost_1_1gil_1_1detail_1_1_pixel_iterator_is_mutable_concept.html">boost::gil::detail::PixelIteratorIsMutableConcept</a></div><div class="ttdef"><b>Definition:</b> concepts/pixel_iterator.hpp:109</div></div>
  62 <div class="ttc" id="structboost_1_1gil_1_1_pixel_iterator_concept_html"><div class="ttname"><a href="structboost_1_1gil_1_1_pixel_iterator_concept.html">boost::gil::PixelIteratorConcept</a></div><div class="ttdoc">An STL random access traversal iterator over a model of PixelConcept.</div><div class="ttdef"><b>Definition:</b> concepts/pixel_iterator.hpp:169</div></div>
  63 <div class="ttc" id="structboost_1_1gil_1_1const__iterator__type_html"><div class="ttname"><a href="structboost_1_1gil_1_1const__iterator__type.html">boost::gil::const_iterator_type</a></div><div class="ttdoc">Returns the type of an iterator just like the input iterator, except operating over immutable values.</div><div class="ttdef"><b>Definition:</b> pixel_iterator.hpp:40</div></div>
  64 <div class="ttc" id="structboost_1_1gil_1_1_step_iterator_concept_html"><div class="ttname"><a href="structboost_1_1gil_1_1_step_iterator_concept.html">boost::gil::StepIteratorConcept</a></div><div class="ttdoc">Step iterator concept.</div><div class="ttdef"><b>Definition:</b> concepts/pixel_iterator.hpp:256</div></div>
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