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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_LOCATOR_HPP</span></div><div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="preprocessor">#define BOOST_GIL_CONCEPTS_PIXEL_LOCATOR_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/basic.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/concept_check.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/fwd.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/pixel.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_dereference.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_iterator.hpp&gt;</span></div><div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="preprocessor">#include &lt;boost/gil/concepts/point.hpp&gt;</span></div><div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="preprocessor">#include &lt;boost/gil/concepts/detail/utility.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">#pragma GCC diagnostic ignored &quot;-Wunused-but-set-variable&quot;</span></div><div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;</div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;<span class="keyword">namespace </span>boost { <span class="keyword">namespace </span>gil {</div><div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;</div><div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;</div><div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;</div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;</div><div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Loc&gt;</div><div class="line"><a name="l00103"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1_random_access_n_d_locator_concept.html">  103</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1_random_access_n_d_locator_concept.html">RandomAccessNDLocatorConcept</a></div><div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;{</div><div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;    <span class="keywordtype">void</span> constraints()</div><div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;    {</div><div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;        gil_function_requires&lt;Regular&lt;Loc&gt;&gt;();</div><div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;</div><div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;        <span class="comment">// TODO: Should these be concept-checked instead of ignored? --mloskot</span></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="keyword">using</span> value_type = <span class="keyword">typename</span> Loc::value_type;</div><div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;        ignore_unused_variable_warning(value_type{});</div><div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;</div><div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;        <span class="comment">// result of dereferencing</span></div><div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;        <span class="keyword">using</span> reference = <span class="keyword">typename</span> Loc::reference;</div><div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;        <span class="comment">//ignore_unused_variable_warning(reference{});</span></div><div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;</div><div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;        <span class="comment">// result of operator-(pixel_locator, pixel_locator)</span></div><div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;        <span class="keyword">using</span> difference_type = <span class="keyword">typename</span> Loc::difference_type;</div><div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;        ignore_unused_variable_warning(difference_type{});</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;        <span class="comment">// type used to store relative location (to allow for more efficient repeated access)</span></div><div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;        <span class="keyword">using</span> cached_location_t = <span class="keyword">typename</span> Loc::cached_location_t;</div><div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;        ignore_unused_variable_warning(cached_location_t{});</div><div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;</div><div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;        <span class="comment">// same as this type, but over const values</span></div><div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;        <span class="keyword">using</span> const_t = <span class="keyword">typename</span> Loc::const_t;</div><div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;        ignore_unused_variable_warning(const_t{});</div><div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;</div><div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;        <span class="comment">// same as difference_type</span></div><div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;        <span class="keyword">using</span> <a class="code" href="classboost_1_1gil_1_1point.html">point_t</a> = <span class="keyword">typename</span> Loc::point_t;</div><div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;        ignore_unused_variable_warning(<a class="code" href="classboost_1_1gil_1_1point.html">point_t</a>{});</div><div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;</div><div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;        <span class="keyword">static</span> std::size_t <span class="keyword">const</span> N = Loc::num_dimensions; ignore_unused_variable_warning(N);</div><div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;</div><div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;        <span class="keyword">using</span> first_it_type = <span class="keyword">typename</span> Loc::template axis&lt;0&gt;::iterator;</div><div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;        <span class="keyword">using</span> last_it_type = <span class="keyword">typename</span> Loc::template axis&lt;N-1&gt;::iterator;</div><div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;        gil_function_requires&lt;boost_concepts::RandomAccessTraversalConcept&lt;first_it_type&gt;&gt;();</div><div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;        gil_function_requires&lt;boost_concepts::RandomAccessTraversalConcept&lt;last_it_type&gt;&gt;();</div><div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;</div><div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;        <span class="comment">// point_t must be an N-dimensional point, each dimension of which must</span></div><div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;        <span class="comment">// have the same type as difference_type of the corresponding iterator</span></div><div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;        gil_function_requires&lt;PointNDConcept&lt;point_t&gt;&gt;();</div><div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;        static_assert(point_t::num_dimensions == N, <span class="stringliteral">&quot;&quot;</span>);</div><div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;        static_assert(std::is_same</div><div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;            &lt;</div><div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;                <span class="keyword">typename</span> std::iterator_traits&lt;first_it_type&gt;::difference_type,</div><div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;                <span class="keyword">typename</span> point_t::template axis&lt;0&gt;::coord_t</div><div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;            &gt;::value, <span class="stringliteral">&quot;&quot;</span>);</div><div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;        static_assert(std::is_same</div><div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;            &lt;</div><div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;                <span class="keyword">typename</span> std::iterator_traits&lt;last_it_type&gt;::difference_type,</div><div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;                <span class="keyword">typename</span> point_t::template axis&lt;N-1&gt;::coord_t</div><div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;            &gt;::value, <span class="stringliteral">&quot;&quot;</span>);</div><div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;</div><div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;        difference_type d;</div><div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;        loc += d;</div><div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;        loc -= d;</div><div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;        loc = loc + d;</div><div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;        loc = loc - d;</div><div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;        reference r1 = loc[d];  ignore_unused_variable_warning(r1);</div><div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;        reference r2 = *loc;  ignore_unused_variable_warning(r2);</div><div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;        cached_location_t cl = loc.cache_location(d);  ignore_unused_variable_warning(cl);</div><div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;        reference r3 = loc[d];  ignore_unused_variable_warning(r3);</div><div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;</div><div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;        first_it_type fi = loc.template axis_iterator&lt;0&gt;();</div><div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;        fi = loc.template axis_iterator&lt;0&gt;(d);</div><div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;        last_it_type li = loc.template axis_iterator&lt;N-1&gt;();</div><div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;        li = loc.template axis_iterator&lt;N-1&gt;(d);</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="keyword">using</span> deref_t = PixelDereferenceAdaptorArchetype&lt;typename Loc::value_type&gt;;</div><div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;        <span class="keyword">using</span> dtype = <span class="keyword">typename</span> Loc::template add_deref&lt;deref_t&gt;::type;</div><div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;        <span class="comment">// TODO: infinite recursion - FIXME?</span></div><div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;        <span class="comment">//gil_function_requires&lt;RandomAccessNDLocatorConcept&lt;dtype&gt;&gt;();</span></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;    Loc loc;</div><div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;};</div><div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;</div><div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Loc&gt;</div><div class="line"><a name="l00220"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1_random_access2_d_locator_concept.html">  220</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1_random_access2_d_locator_concept.html">RandomAccess2DLocatorConcept</a></div><div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;{</div><div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;    <span class="keywordtype">void</span> constraints()</div><div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;    {</div><div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;        gil_function_requires&lt;RandomAccessNDLocatorConcept&lt;Loc&gt;&gt;();</div><div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;        static_assert(Loc::num_dimensions == 2, <span class="stringliteral">&quot;&quot;</span>);</div><div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;</div><div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;        <span class="keyword">using</span> dynamic_x_step_t = <span class="keyword">typename</span> <a class="code" href="structboost_1_1gil_1_1dynamic__x__step__type.html">dynamic_x_step_type&lt;Loc&gt;::type</a>;</div><div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;        <span class="keyword">using</span> dynamic_y_step_t = <span class="keyword">typename</span> <a class="code" href="structboost_1_1gil_1_1dynamic__y__step__type.html">dynamic_y_step_type&lt;Loc&gt;::type</a>;</div><div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;        <span class="keyword">using</span> transposed_t = <span class="keyword">typename</span> transposed_type&lt;Loc&gt;::type;</div><div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;</div><div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;        <span class="keyword">using</span> cached_location_t = <span class="keyword">typename</span> Loc::cached_location_t;</div><div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;        gil_function_requires&lt;Point2DConcept&lt;typename Loc::point_t&gt;&gt;();</div><div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;</div><div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;        <span class="keyword">using</span> x_iterator = <span class="keyword">typename</span> Loc::x_iterator;</div><div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;        <span class="keyword">using</span> y_iterator = <span class="keyword">typename</span> Loc::y_iterator;</div><div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;        <span class="keyword">using</span> x_coord_t = <span class="keyword">typename</span> Loc::x_coord_t;</div><div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;        <span class="keyword">using</span> y_coord_t = <span class="keyword">typename</span> Loc::y_coord_t;</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;        x_coord_t xd = 0; ignore_unused_variable_warning(xd);</div><div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;        y_coord_t yd = 0; ignore_unused_variable_warning(yd);</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;        <span class="keyword">typename</span> Loc::difference_type d;</div><div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;        <span class="keyword">typename</span> Loc::reference r=loc(xd,yd);  ignore_unused_variable_warning(r);</div><div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;</div><div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;        dynamic_x_step_t loc2(dynamic_x_step_t(), yd);</div><div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;        dynamic_x_step_t loc3(dynamic_x_step_t(), xd, yd);</div><div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;</div><div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;        <span class="keyword">using</span> dynamic_xy_step_transposed_t = <span class="keyword">typename</span> <a class="code" href="structboost_1_1gil_1_1dynamic__y__step__type.html">dynamic_y_step_type</a></div><div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;            &lt;</div><div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;                <span class="keyword">typename</span> <a class="code" href="structboost_1_1gil_1_1dynamic__x__step__type.html">dynamic_x_step_type&lt;transposed_t&gt;::type</a></div><div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;            &gt;::type;</div><div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;        dynamic_xy_step_transposed_t loc4(loc, xd,yd,<span class="keyword">true</span>);</div><div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;</div><div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;        <span class="keywordtype">bool</span> is_contiguous = loc.is_1d_traversable(xd);</div><div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;        ignore_unused_variable_warning(is_contiguous);</div><div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;</div><div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;        loc.y_distance_to(loc, xd);</div><div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;</div><div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;        loc = loc.xy_at(d);</div><div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;        loc = loc.xy_at(xd, yd);</div><div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;</div><div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;        x_iterator xit = loc.x_at(d);</div><div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;        xit = loc.x_at(xd, yd);</div><div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;        xit = loc.x();</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;        y_iterator yit = loc.y_at(d);</div><div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;        yit = loc.y_at(xd, yd);</div><div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;        yit = loc.y();</div><div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;</div><div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;        cached_location_t cl = loc.cache_location(xd, yd);</div><div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;        ignore_unused_variable_warning(cl);</div><div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;    }</div><div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;    Loc loc;</div><div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;};</div><div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;</div><div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Loc&gt;</div><div class="line"><a name="l00290"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1_pixel_locator_concept.html">  290</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1_pixel_locator_concept.html">PixelLocatorConcept</a></div><div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;{</div><div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160;    <span class="keywordtype">void</span> constraints()</div><div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;    {</div><div class="line"><a name="l00294"></a><span class="lineno">  294</span>&#160;        gil_function_requires&lt;RandomAccess2DLocatorConcept&lt;Loc&gt;&gt;();</div><div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160;        gil_function_requires&lt;PixelIteratorConcept&lt;typename Loc::x_iterator&gt;&gt;();</div><div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;        gil_function_requires&lt;PixelIteratorConcept&lt;typename Loc::y_iterator&gt;&gt;();</div><div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160;        <span class="keyword">using</span> coord_t = <span class="keyword">typename</span> Loc::coord_t;</div><div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160;        static_assert(std::is_same&lt;typename Loc::x_coord_t, typename Loc::y_coord_t&gt;::value, <span class="stringliteral">&quot;&quot;</span>);</div><div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;    }</div><div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160;    Loc loc;</div><div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160;};</div><div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;</div><div class="line"><a name="l00303"></a><span class="lineno">  303</span>&#160;<span class="keyword">namespace </span>detail {</div><div class="line"><a name="l00304"></a><span class="lineno">  304</span>&#160;</div><div class="line"><a name="l00306"></a><span class="lineno">  306</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Loc&gt;</div><div class="line"><a name="l00307"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1detail_1_1_random_access_n_d_locator_is_mutable_concept.html">  307</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1detail_1_1_random_access_n_d_locator_is_mutable_concept.html">RandomAccessNDLocatorIsMutableConcept</a></div><div class="line"><a name="l00308"></a><span class="lineno">  308</span>&#160;{</div><div class="line"><a name="l00309"></a><span class="lineno">  309</span>&#160;    <span class="keywordtype">void</span> constraints()</div><div class="line"><a name="l00310"></a><span class="lineno">  310</span>&#160;    {</div><div class="line"><a name="l00311"></a><span class="lineno">  311</span>&#160;        gil_function_requires&lt;detail::RandomAccessIteratorIsMutableConcept</div><div class="line"><a name="l00312"></a><span class="lineno">  312</span>&#160;            &lt;</div><div class="line"><a name="l00313"></a><span class="lineno">  313</span>&#160;                <span class="keyword">typename</span> Loc::template axis&lt;0&gt;::iterator</div><div class="line"><a name="l00314"></a><span class="lineno">  314</span>&#160;            &gt;&gt;();</div><div class="line"><a name="l00315"></a><span class="lineno">  315</span>&#160;        gil_function_requires&lt;detail::RandomAccessIteratorIsMutableConcept</div><div class="line"><a name="l00316"></a><span class="lineno">  316</span>&#160;            &lt;</div><div class="line"><a name="l00317"></a><span class="lineno">  317</span>&#160;                <span class="keyword">typename</span> Loc::template axis&lt;Loc::num_dimensions-1&gt;::iterator</div><div class="line"><a name="l00318"></a><span class="lineno">  318</span>&#160;            &gt;&gt;();</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;        <span class="keyword">typename</span> Loc::difference_type d; initialize_it(d);</div><div class="line"><a name="l00321"></a><span class="lineno">  321</span>&#160;        <span class="keyword">typename</span> Loc::value_type v; initialize_it(v);</div><div class="line"><a name="l00322"></a><span class="lineno">  322</span>&#160;        <span class="keyword">typename</span> Loc::cached_location_t cl = loc.cache_location(d);</div><div class="line"><a name="l00323"></a><span class="lineno">  323</span>&#160;        *loc = v;</div><div class="line"><a name="l00324"></a><span class="lineno">  324</span>&#160;        loc[d] = v;</div><div class="line"><a name="l00325"></a><span class="lineno">  325</span>&#160;        loc[cl] = v;</div><div class="line"><a name="l00326"></a><span class="lineno">  326</span>&#160;    }</div><div class="line"><a name="l00327"></a><span class="lineno">  327</span>&#160;    Loc loc;</div><div class="line"><a name="l00328"></a><span class="lineno">  328</span>&#160;};</div><div class="line"><a name="l00329"></a><span class="lineno">  329</span>&#160;</div><div class="line"><a name="l00330"></a><span class="lineno">  330</span>&#160;<span class="comment">// \tparam Loc Models RandomAccess2DLocatorConcept</span></div><div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Loc&gt;</div><div class="line"><a name="l00332"></a><span class="lineno">  332</span>&#160;<span class="keyword">struct </span>RandomAccess2DLocatorIsMutableConcept</div><div class="line"><a name="l00333"></a><span class="lineno">  333</span>&#160;{</div><div class="line"><a name="l00334"></a><span class="lineno">  334</span>&#160;    <span class="keywordtype">void</span> constraints()</div><div class="line"><a name="l00335"></a><span class="lineno">  335</span>&#160;    {</div><div class="line"><a name="l00336"></a><span class="lineno">  336</span>&#160;        gil_function_requires&lt;detail::RandomAccessNDLocatorIsMutableConcept&lt;Loc&gt;&gt;();</div><div class="line"><a name="l00337"></a><span class="lineno">  337</span>&#160;        <span class="keyword">typename</span> Loc::x_coord_t xd = 0; ignore_unused_variable_warning(xd);</div><div class="line"><a name="l00338"></a><span class="lineno">  338</span>&#160;        <span class="keyword">typename</span> Loc::y_coord_t yd = 0; ignore_unused_variable_warning(yd);</div><div class="line"><a name="l00339"></a><span class="lineno">  339</span>&#160;        <span class="keyword">typename</span> Loc::value_type v; initialize_it(v);</div><div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160;        loc(xd, yd) = v;</div><div class="line"><a name="l00341"></a><span class="lineno">  341</span>&#160;    }</div><div class="line"><a name="l00342"></a><span class="lineno">  342</span>&#160;    Loc loc;</div><div class="line"><a name="l00343"></a><span class="lineno">  343</span>&#160;};</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;} <span class="comment">// namespace detail</span></div><div class="line"><a name="l00346"></a><span class="lineno">  346</span>&#160;</div><div class="line"><a name="l00356"></a><span class="lineno">  356</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Loc&gt;</div><div class="line"><a name="l00357"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1_mutable_random_access_n_d_locator_concept.html">  357</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1_mutable_random_access_n_d_locator_concept.html">MutableRandomAccessNDLocatorConcept</a></div><div class="line"><a name="l00358"></a><span class="lineno">  358</span>&#160;{</div><div class="line"><a name="l00359"></a><span class="lineno">  359</span>&#160;    <span class="keywordtype">void</span> constraints()</div><div class="line"><a name="l00360"></a><span class="lineno">  360</span>&#160;    {</div><div class="line"><a name="l00361"></a><span class="lineno">  361</span>&#160;        gil_function_requires&lt;RandomAccessNDLocatorConcept&lt;Loc&gt;&gt;();</div><div class="line"><a name="l00362"></a><span class="lineno">  362</span>&#160;        gil_function_requires&lt;detail::RandomAccessNDLocatorIsMutableConcept&lt;Loc&gt;&gt;();</div><div class="line"><a name="l00363"></a><span class="lineno">  363</span>&#160;    }</div><div class="line"><a name="l00364"></a><span class="lineno">  364</span>&#160;};</div><div class="line"><a name="l00365"></a><span class="lineno">  365</span>&#160;</div><div class="line"><a name="l00373"></a><span class="lineno">  373</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Loc&gt;</div><div class="line"><a name="l00374"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1_mutable_random_access2_d_locator_concept.html">  374</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1_mutable_random_access2_d_locator_concept.html">MutableRandomAccess2DLocatorConcept</a></div><div class="line"><a name="l00375"></a><span class="lineno">  375</span>&#160;{</div><div class="line"><a name="l00376"></a><span class="lineno">  376</span>&#160;    <span class="keywordtype">void</span> constraints()</div><div class="line"><a name="l00377"></a><span class="lineno">  377</span>&#160;    {</div><div class="line"><a name="l00378"></a><span class="lineno">  378</span>&#160;        gil_function_requires&lt;RandomAccess2DLocatorConcept&lt;Loc&gt;&gt;();</div><div class="line"><a name="l00379"></a><span class="lineno">  379</span>&#160;        gil_function_requires&lt;detail::RandomAccess2DLocatorIsMutableConcept&lt;Loc&gt;&gt;();</div><div class="line"><a name="l00380"></a><span class="lineno">  380</span>&#160;    }</div><div class="line"><a name="l00381"></a><span class="lineno">  381</span>&#160;};</div><div class="line"><a name="l00382"></a><span class="lineno">  382</span>&#160;</div><div class="line"><a name="l00390"></a><span class="lineno">  390</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Loc&gt;</div><div class="line"><a name="l00391"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1_mutable_pixel_locator_concept.html">  391</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1_mutable_pixel_locator_concept.html">MutablePixelLocatorConcept</a></div><div class="line"><a name="l00392"></a><span class="lineno">  392</span>&#160;{</div><div class="line"><a name="l00393"></a><span class="lineno">  393</span>&#160;    <span class="keywordtype">void</span> constraints()</div><div class="line"><a name="l00394"></a><span class="lineno">  394</span>&#160;    {</div><div class="line"><a name="l00395"></a><span class="lineno">  395</span>&#160;        gil_function_requires&lt;PixelLocatorConcept&lt;Loc&gt;&gt;();</div><div class="line"><a name="l00396"></a><span class="lineno">  396</span>&#160;        gil_function_requires&lt;detail::RandomAccess2DLocatorIsMutableConcept&lt;Loc&gt;&gt;();</div><div class="line"><a name="l00397"></a><span class="lineno">  397</span>&#160;    }</div><div class="line"><a name="l00398"></a><span class="lineno">  398</span>&#160;};</div><div class="line"><a name="l00399"></a><span class="lineno">  399</span>&#160;</div><div class="line"><a name="l00400"></a><span class="lineno">  400</span>&#160;}} <span class="comment">// namespace boost::gil</span></div><div class="line"><a name="l00401"></a><span class="lineno">  401</span>&#160;</div><div class="line"><a name="l00402"></a><span class="lineno">  402</span>&#160;<span class="preprocessor">#if defined(BOOST_CLANG)</span></div><div class="line"><a name="l00403"></a><span class="lineno">  403</span>&#160;<span class="preprocessor">#pragma clang diagnostic pop</span></div><div class="line"><a name="l00404"></a><span class="lineno">  404</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00405"></a><span class="lineno">  405</span>&#160;</div><div class="line"><a name="l00406"></a><span class="lineno">  406</span>&#160;<span class="preprocessor">#if defined(BOOST_GCC) &amp;&amp; (BOOST_GCC &gt;= 40900)</span></div><div class="line"><a name="l00407"></a><span class="lineno">  407</span>&#160;<span class="preprocessor">#pragma GCC diagnostic pop</span></div><div class="line"><a name="l00408"></a><span class="lineno">  408</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00409"></a><span class="lineno">  409</span>&#160;</div><div class="line"><a name="l00410"></a><span class="lineno">  410</span>&#160;<span class="preprocessor">#endif</span></div><div class="ttc" id="structboost_1_1gil_1_1_mutable_random_access_n_d_locator_concept_html"><div class="ttname"><a href="structboost_1_1gil_1_1_mutable_random_access_n_d_locator_concept.html">boost::gil::MutableRandomAccessNDLocatorConcept</a></div><div class="ttdoc">N-dimensional locator over mutable pixels.</div><div class="ttdef"><b>Definition:</b> pixel_locator.hpp:357</div></div>
  51 <div class="ttc" id="structboost_1_1gil_1_1detail_1_1_random_access_n_d_locator_is_mutable_concept_html"><div class="ttname"><a href="structboost_1_1gil_1_1detail_1_1_random_access_n_d_locator_is_mutable_concept.html">boost::gil::detail::RandomAccessNDLocatorIsMutableConcept</a></div><div class="ttdef"><b>Definition:</b> pixel_locator.hpp:307</div></div>
  52 <div class="ttc" id="structboost_1_1gil_1_1_mutable_random_access2_d_locator_concept_html"><div class="ttname"><a href="structboost_1_1gil_1_1_mutable_random_access2_d_locator_concept.html">boost::gil::MutableRandomAccess2DLocatorConcept</a></div><div class="ttdoc">2-dimensional locator over mutable pixels</div><div class="ttdef"><b>Definition:</b> pixel_locator.hpp:374</div></div>
  53 <div class="ttc" id="structboost_1_1gil_1_1_random_access2_d_locator_concept_html"><div class="ttname"><a href="structboost_1_1gil_1_1_random_access2_d_locator_concept.html">boost::gil::RandomAccess2DLocatorConcept</a></div><div class="ttdoc">2-dimensional locator over immutable values</div><div class="ttdef"><b>Definition:</b> pixel_locator.hpp:220</div></div>
  54 <div class="ttc" id="structboost_1_1gil_1_1_pixel_locator_concept_html"><div class="ttname"><a href="structboost_1_1gil_1_1_pixel_locator_concept.html">boost::gil::PixelLocatorConcept</a></div><div class="ttdoc">GIL's 2-dimensional locator over immutable GIL pixels.</div><div class="ttdef"><b>Definition:</b> pixel_locator.hpp:290</div></div>
  55 <div class="ttc" id="structboost_1_1gil_1_1dynamic__y__step__type_html"><div class="ttname"><a href="structboost_1_1gil_1_1dynamic__y__step__type.html">boost::gil::dynamic_y_step_type</a></div><div class="ttdoc">Base template for types that model HasDynamicYStepTypeConcept.</div><div class="ttdef"><b>Definition:</b> dynamic_step.hpp:21</div></div>
  56 <div class="ttc" id="structboost_1_1gil_1_1_random_access_n_d_locator_concept_html"><div class="ttname"><a href="structboost_1_1gil_1_1_random_access_n_d_locator_concept.html">boost::gil::RandomAccessNDLocatorConcept</a></div><div class="ttdoc">N-dimensional locator over immutable values.</div><div class="ttdef"><b>Definition:</b> pixel_locator.hpp:103</div></div>
  57 <div class="ttc" id="classboost_1_1gil_1_1point_html"><div class="ttname"><a href="classboost_1_1gil_1_1point.html">boost::gil::point&lt; std::ptrdiff_t &gt;</a></div></div>
  58 <div class="ttc" id="structboost_1_1gil_1_1dynamic__x__step__type_html"><div class="ttname"><a href="structboost_1_1gil_1_1dynamic__x__step__type.html">boost::gil::dynamic_x_step_type</a></div><div class="ttdoc">Base template for types that model HasDynamicXStepTypeConcept.</div><div class="ttdef"><b>Definition:</b> dynamic_step.hpp:17</div></div>
  59 <div class="ttc" id="structboost_1_1gil_1_1_mutable_pixel_locator_concept_html"><div class="ttname"><a href="structboost_1_1gil_1_1_mutable_pixel_locator_concept.html">boost::gil::MutablePixelLocatorConcept</a></div><div class="ttdoc">GIL's 2-dimensional locator over mutable GIL pixels.</div><div class="ttdef"><b>Definition:</b> pixel_locator.hpp:391</div></div>
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