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  50 <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_IMAGE_VIEW_HPP</span></div><div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="preprocessor">#define BOOST_GIL_CONCEPTS_IMAGE_VIEW_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/pixel_locator.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/point.hpp&gt;</span></div><div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="preprocessor">#include &lt;boost/gil/concepts/detail/utility.hpp&gt;</span></div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;</div><div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="preprocessor">#include &lt;cstddef&gt;</span></div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="preprocessor">#include &lt;iterator&gt;</span></div><div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="preprocessor">#include &lt;type_traits&gt;</span></div><div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;</div><div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="preprocessor">#if defined(BOOST_CLANG)</span></div><div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="preprocessor">#pragma clang diagnostic push</span></div><div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="preprocessor">#pragma clang diagnostic ignored &quot;-Wunused-local-typedefs&quot;</span></div><div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;</div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="preprocessor">#if defined(BOOST_GCC) &amp;&amp; (BOOST_GCC &gt;= 40900)</span></div><div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="preprocessor">#pragma GCC diagnostic push</span></div><div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;<span class="preprocessor">#pragma GCC diagnostic ignored &quot;-Wunused-local-typedefs&quot;</span></div><div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;<span class="preprocessor">#pragma GCC diagnostic ignored &quot;-Wunused-but-set-variable&quot;</span></div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="preprocessor">#endif</span></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="keyword">namespace </span>boost { <span class="keyword">namespace </span>gil {</div><div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;</div><div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;</div><div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;</div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;</div><div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> View&gt;</div><div class="line"><a name="l00102"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1_random_access_n_d_image_view_concept.html">  102</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1_random_access_n_d_image_view_concept.html">RandomAccessNDImageViewConcept</a></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;    <span class="keywordtype">void</span> constraints()</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;        gil_function_requires&lt;Regular&lt;View&gt;&gt;();</div><div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;</div><div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;        <span class="keyword">using</span> value_type = <span class="keyword">typename</span> View::value_type;</div><div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;        <span class="keyword">using</span> reference = <span class="keyword">typename</span> View::reference; <span class="comment">// result of dereferencing</span></div><div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;        <span class="keyword">using</span> pointer = <span class="keyword">typename</span> View::pointer;</div><div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;        <span class="keyword">using</span> difference_type = <span class="keyword">typename</span> View::difference_type; <span class="comment">// result of operator-(1d_iterator,1d_iterator)</span></div><div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;        <span class="keyword">using</span> const_t = <span class="keyword">typename</span> View::const_t; <span class="comment">// same as this type, but over const values</span></div><div class="line"><a name="l00113"></a><span class="lineno">  113</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> View::point_t; <span class="comment">// N-dimensional point</span></div><div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;        <span class="keyword">using</span> locator = <span class="keyword">typename</span> View::locator; <span class="comment">// N-dimensional locator</span></div><div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;        <span class="keyword">using</span> iterator = <span class="keyword">typename</span> View::iterator;</div><div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;        <span class="keyword">using</span> const_iterator = <span class="keyword">typename</span> View::const_iterator;</div><div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;        <span class="keyword">using</span> reverse_iterator = <span class="keyword">typename</span> View::reverse_iterator;</div><div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;        <span class="keyword">using</span> size_type = <span class="keyword">typename</span> View::size_type;</div><div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;        <span class="keyword">static</span> <span class="keyword">const</span> std::size_t N=View::num_dimensions;</div><div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;</div><div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;        gil_function_requires&lt;RandomAccessNDLocatorConcept&lt;locator&gt;&gt;();</div><div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;        gil_function_requires&lt;boost_concepts::RandomAccessTraversalConcept&lt;iterator&gt;&gt;();</div><div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;        gil_function_requires&lt;boost_concepts::RandomAccessTraversalConcept&lt;reverse_iterator&gt;&gt;();</div><div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;</div><div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;        <span class="keyword">using</span> first_it_type = <span class="keyword">typename</span> View::template axis&lt;0&gt;::iterator;</div><div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;        <span class="keyword">using</span> last_it_type = <span class="keyword">typename</span> View::template axis&lt;N-1&gt;::iterator;</div><div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;        gil_function_requires&lt;boost_concepts::RandomAccessTraversalConcept&lt;first_it_type&gt;&gt;();</div><div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;        gil_function_requires&lt;boost_concepts::RandomAccessTraversalConcept&lt;last_it_type&gt;&gt;();</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">//        static_assert(typename std::iterator_traits&lt;first_it_type&gt;::difference_type, typename point_t::template axis&lt;0&gt;::coord_t&gt;::value, &quot;&quot;);</span></div><div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;<span class="comment">//        static_assert(typename std::iterator_traits&lt;last_it_type&gt;::difference_type, typename point_t::template axis&lt;N-1&gt;::coord_t&gt;::value, &quot;&quot;);</span></div><div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;</div><div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;        <span class="comment">// point_t must be an N-dimensional point, each dimension of which must have the same type as difference_type of the corresponding iterator</span></div><div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;        gil_function_requires&lt;PointNDConcept&lt;point_t&gt;&gt;();</div><div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;        static_assert(point_t::num_dimensions == N, <span class="stringliteral">&quot;&quot;</span>);</div><div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;        static_assert(std::is_same</div><div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;            &lt;</div><div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;                <span class="keyword">typename</span> std::iterator_traits&lt;first_it_type&gt;::difference_type,</div><div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;                <span class="keyword">typename</span> point_t::template axis&lt;0&gt;::coord_t</div><div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;            &gt;::value, <span class="stringliteral">&quot;&quot;</span>);</div><div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;        static_assert(std::is_same</div><div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;            &lt;</div><div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;                <span class="keyword">typename</span> std::iterator_traits&lt;last_it_type&gt;::difference_type,</div><div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;                <span class="keyword">typename</span> point_t::template axis&lt;N-1&gt;::coord_t</div><div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;            &gt;::value, <span class="stringliteral">&quot;&quot;</span>);</div><div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;</div><div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;        <a class="code" href="classboost_1_1gil_1_1point.html">point_t</a> p;</div><div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;        locator lc;</div><div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;        iterator it;</div><div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;        reverse_iterator rit;</div><div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;        difference_type d; detail::initialize_it(d); ignore_unused_variable_warning(d);</div><div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;</div><div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;        View(p,lc); <span class="comment">// view must be constructible from a locator and a point</span></div><div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;</div><div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;        p = view.dimensions();</div><div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;        lc = view.pixels();</div><div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;        size_type sz = view.size(); ignore_unused_variable_warning(sz);</div><div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;        <span class="keywordtype">bool</span> is_contiguous = view.is_1d_traversable();</div><div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;        ignore_unused_variable_warning(is_contiguous);</div><div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;</div><div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;        it = view.begin();</div><div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;        it = view.end();</div><div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;        rit = view.rbegin();</div><div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;        rit = view.rend();</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;        reference r1 = view[d]; ignore_unused_variable_warning(r1); <span class="comment">// 1D access</span></div><div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;        reference r2 = view(p); ignore_unused_variable_warning(r2); <span class="comment">// 2D access</span></div><div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;</div><div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;        <span class="comment">// get 1-D iterator of any dimension at a given pixel location</span></div><div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;        first_it_type fi = view.template axis_iterator&lt;0&gt;(p);</div><div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;        ignore_unused_variable_warning(fi);</div><div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;        last_it_type li = view.template axis_iterator&lt;N-1&gt;(p);</div><div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;        ignore_unused_variable_warning(li);</div><div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;</div><div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;        <span class="keyword">using</span> deref_t = PixelDereferenceAdaptorArchetype&lt;typename View::value_type&gt;;</div><div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;        <span class="keyword">using</span> dtype = <span class="keyword">typename</span> View::template add_deref&lt;deref_t&gt;::type;</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;    View view;</div><div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;};</div><div class="line"><a name="l00180"></a><span class="lineno">  180</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> View&gt;</div><div class="line"><a name="l00220"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1_random_access2_d_image_view_concept.html">  220</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1_random_access2_d_image_view_concept.html">RandomAccess2DImageViewConcept</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;RandomAccessNDImageViewConcept&lt;View&gt;&gt;();</div><div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;        static_assert(View::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="comment">// TODO: This executes the requirements for RandomAccessNDLocatorConcept again. Fix it to improve compile time</span></div><div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;        gil_function_requires&lt;RandomAccess2DLocatorConcept&lt;typename View::locator&gt;&gt;();</div><div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;</div><div class="line"><a name="l00230"></a><span class="lineno">  230</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;View&gt;::type</a>;</div><div class="line"><a name="l00231"></a><span class="lineno">  231</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;View&gt;::type</a>;</div><div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;        <span class="keyword">using</span> transposed_t = <span class="keyword">typename</span> transposed_type&lt;View&gt;::type;</div><div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;        <span class="keyword">using</span> x_iterator = <span class="keyword">typename</span> View::x_iterator;</div><div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;        <span class="keyword">using</span> y_iterator = <span class="keyword">typename</span> View::y_iterator;</div><div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;        <span class="keyword">using</span> x_coord_t = <span class="keyword">typename</span> View::x_coord_t;</div><div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;        <span class="keyword">using</span> y_coord_t = <span class="keyword">typename</span> View::y_coord_t;</div><div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;        <span class="keyword">using</span> xy_locator = <span class="keyword">typename</span> View::xy_locator;</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;        x_iterator xit;</div><div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;        y_iterator yit;</div><div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;        <span class="keyword">typename</span> View::point_t d;</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;        View(xd, yd, xy_locator()); <span class="comment">// constructible with width, height, 2d_locator</span></div><div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;</div><div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;        xy_locator lc = view.xy_at(xd, yd);</div><div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;        lc = view.xy_at(d);</div><div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;</div><div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;        <span class="keyword">typename</span> View::reference r = view(xd, yd);</div><div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;        ignore_unused_variable_warning(r);</div><div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;        xd = view.width();</div><div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;        yd = view.height();</div><div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;</div><div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;        xit = view.x_at(d);</div><div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;        xit = view.x_at(xd,yd);</div><div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;        xit = view.row_begin(xd);</div><div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;        xit = view.row_end(xd);</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;        yit = view.y_at(d);</div><div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;        yit = view.y_at(xd,yd);</div><div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;        yit = view.col_begin(xd);</div><div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;        yit = view.col_end(xd);</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;    View view;</div><div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;};</div><div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;</div><div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> View&gt;</div><div class="line"><a name="l00273"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1_collection_image_view_concept.html">  273</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1_collection_image_view_concept.html">CollectionImageViewConcept</a></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;    <span class="keywordtype">void</span> constraints()</div><div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;    {</div><div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;        <span class="keyword">using</span> value_type = <span class="keyword">typename</span> View::value_type;</div><div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;        <span class="keyword">using</span> iterator = <span class="keyword">typename</span> View::iterator;</div><div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;        <span class="keyword">using</span> const_iterator =  <span class="keyword">typename</span> View::const_iterator;</div><div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;        <span class="keyword">using</span> reference = <span class="keyword">typename</span> View::reference;</div><div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;        <span class="keyword">using</span> const_reference = <span class="keyword">typename</span> View::const_reference;</div><div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;        <span class="keyword">using</span> pointer = <span class="keyword">typename</span> View::pointer;</div><div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;        <span class="keyword">using</span> difference_type = <span class="keyword">typename</span> View::difference_type;</div><div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;        <span class="keyword">using</span> size_type=  <span class="keyword">typename</span> View::size_type;</div><div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;</div><div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;        iterator i;</div><div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;        i = view1.begin();</div><div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;        i = view2.end();</div><div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;</div><div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;        const_iterator ci;</div><div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;        ci = view1.begin();</div><div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160;        ci = view2.end();</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;        size_type s;</div><div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160;        s = view1.size();</div><div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;        s = view2.size();</div><div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160;        ignore_unused_variable_warning(s);</div><div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160;</div><div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;        view1.empty();</div><div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160;</div><div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160;        view1.swap(view2);</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;    View view1;</div><div class="line"><a name="l00304"></a><span class="lineno">  304</span>&#160;    View view2;</div><div class="line"><a name="l00305"></a><span class="lineno">  305</span>&#160;};</div><div class="line"><a name="l00306"></a><span class="lineno">  306</span>&#160;</div><div class="line"><a name="l00311"></a><span class="lineno">  311</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> View&gt;</div><div class="line"><a name="l00312"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1_forward_collection_image_view_concept.html">  312</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1_forward_collection_image_view_concept.html">ForwardCollectionImageViewConcept</a></div><div class="line"><a name="l00313"></a><span class="lineno">  313</span>&#160;{</div><div class="line"><a name="l00314"></a><span class="lineno">  314</span>&#160;    <span class="keywordtype">void</span> constraints()</div><div class="line"><a name="l00315"></a><span class="lineno">  315</span>&#160;    {</div><div class="line"><a name="l00316"></a><span class="lineno">  316</span>&#160;        gil_function_requires&lt;CollectionImageViewConcept&lt;View&gt;&gt;();</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="keyword">using</span> reference = <span class="keyword">typename</span> View::reference;</div><div class="line"><a name="l00319"></a><span class="lineno">  319</span>&#160;        <span class="keyword">using</span> const_reference = <span class="keyword">typename</span> View::const_reference;</div><div class="line"><a name="l00320"></a><span class="lineno">  320</span>&#160;</div><div class="line"><a name="l00321"></a><span class="lineno">  321</span>&#160;        reference r = view.front();</div><div class="line"><a name="l00322"></a><span class="lineno">  322</span>&#160;        ignore_unused_variable_warning(r);</div><div class="line"><a name="l00323"></a><span class="lineno">  323</span>&#160;</div><div class="line"><a name="l00324"></a><span class="lineno">  324</span>&#160;        const_reference cr = view.front();</div><div class="line"><a name="l00325"></a><span class="lineno">  325</span>&#160;        ignore_unused_variable_warning(cr);</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;    View view;</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="l00334"></a><span class="lineno">  334</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> View&gt;</div><div class="line"><a name="l00335"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1_reversible_collection_image_view_concept.html">  335</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1_reversible_collection_image_view_concept.html">ReversibleCollectionImageViewConcept</a></div><div class="line"><a name="l00336"></a><span class="lineno">  336</span>&#160;{</div><div class="line"><a name="l00337"></a><span class="lineno">  337</span>&#160;    <span class="keywordtype">void</span> constraints()</div><div class="line"><a name="l00338"></a><span class="lineno">  338</span>&#160;    {</div><div class="line"><a name="l00339"></a><span class="lineno">  339</span>&#160;        gil_function_requires&lt;CollectionImageViewConcept&lt;View&gt;&gt;();</div><div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160;</div><div class="line"><a name="l00341"></a><span class="lineno">  341</span>&#160;        <span class="keyword">using</span> reverse_iterator = <span class="keyword">typename</span> View::reverse_iterator;</div><div class="line"><a name="l00342"></a><span class="lineno">  342</span>&#160;        <span class="keyword">using</span> reference = <span class="keyword">typename</span> View::reference;</div><div class="line"><a name="l00343"></a><span class="lineno">  343</span>&#160;        <span class="keyword">using</span> const_reference = <span class="keyword">typename</span> View::const_reference;</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;        reverse_iterator i;</div><div class="line"><a name="l00346"></a><span class="lineno">  346</span>&#160;        i = view.rbegin();</div><div class="line"><a name="l00347"></a><span class="lineno">  347</span>&#160;        i = view.rend();</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;        reference r = view.back();</div><div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160;        ignore_unused_variable_warning(r);</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;        const_reference cr = view.back();</div><div class="line"><a name="l00353"></a><span class="lineno">  353</span>&#160;        ignore_unused_variable_warning(cr);</div><div class="line"><a name="l00354"></a><span class="lineno">  354</span>&#160;    }</div><div class="line"><a name="l00355"></a><span class="lineno">  355</span>&#160;    View view;</div><div class="line"><a name="l00356"></a><span class="lineno">  356</span>&#160;};</div><div class="line"><a name="l00357"></a><span class="lineno">  357</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> View&gt;</div><div class="line"><a name="l00374"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1_image_view_concept.html">  374</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1_image_view_concept.html">ImageViewConcept</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;RandomAccess2DImageViewConcept&lt;View&gt;&gt;();</div><div class="line"><a name="l00379"></a><span class="lineno">  379</span>&#160;</div><div class="line"><a name="l00380"></a><span class="lineno">  380</span>&#160;        <span class="comment">// TODO: This executes the requirements for RandomAccess2DLocatorConcept again. Fix it to improve compile time</span></div><div class="line"><a name="l00381"></a><span class="lineno">  381</span>&#160;        gil_function_requires&lt;PixelLocatorConcept&lt;typename View::xy_locator&gt;&gt;();</div><div class="line"><a name="l00382"></a><span class="lineno">  382</span>&#160;</div><div class="line"><a name="l00383"></a><span class="lineno">  383</span>&#160;        static_assert(std::is_same&lt;typename View::x_coord_t, typename View::y_coord_t&gt;::value, <span class="stringliteral">&quot;&quot;</span>);</div><div class="line"><a name="l00384"></a><span class="lineno">  384</span>&#160;</div><div class="line"><a name="l00385"></a><span class="lineno">  385</span>&#160;        <span class="keyword">using</span> coord_t = <span class="keyword">typename</span> View::coord_t; <span class="comment">// 1D difference type (same for all dimensions)</span></div><div class="line"><a name="l00386"></a><span class="lineno">  386</span>&#160;        std::size_t num_chan = view.num_channels(); ignore_unused_variable_warning(num_chan);</div><div class="line"><a name="l00387"></a><span class="lineno">  387</span>&#160;    }</div><div class="line"><a name="l00388"></a><span class="lineno">  388</span>&#160;    View view;</div><div class="line"><a name="l00389"></a><span class="lineno">  389</span>&#160;};</div><div class="line"><a name="l00390"></a><span class="lineno">  390</span>&#160;</div><div class="line"><a name="l00391"></a><span class="lineno">  391</span>&#160;<span class="keyword">namespace </span>detail {</div><div class="line"><a name="l00392"></a><span class="lineno">  392</span>&#160;</div><div class="line"><a name="l00394"></a><span class="lineno">  394</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> View&gt;</div><div class="line"><a name="l00395"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1detail_1_1_random_access_n_d_image_view_is_mutable_concept.html">  395</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1detail_1_1_random_access_n_d_image_view_is_mutable_concept.html">RandomAccessNDImageViewIsMutableConcept</a></div><div class="line"><a name="l00396"></a><span class="lineno">  396</span>&#160;{</div><div class="line"><a name="l00397"></a><span class="lineno">  397</span>&#160;    <span class="keywordtype">void</span> constraints()</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;        gil_function_requires&lt;detail::RandomAccessNDLocatorIsMutableConcept&lt;typename View::locator&gt;&gt;();</div><div class="line"><a name="l00400"></a><span class="lineno">  400</span>&#160;</div><div class="line"><a name="l00401"></a><span class="lineno">  401</span>&#160;        gil_function_requires&lt;detail::RandomAccessIteratorIsMutableConcept&lt;typename View::iterator&gt;&gt;();</div><div class="line"><a name="l00402"></a><span class="lineno">  402</span>&#160;</div><div class="line"><a name="l00403"></a><span class="lineno">  403</span>&#160;        gil_function_requires&lt;detail::RandomAccessIteratorIsMutableConcept</div><div class="line"><a name="l00404"></a><span class="lineno">  404</span>&#160;            &lt;</div><div class="line"><a name="l00405"></a><span class="lineno">  405</span>&#160;                <span class="keyword">typename</span> View::reverse_iterator</div><div class="line"><a name="l00406"></a><span class="lineno">  406</span>&#160;            &gt;&gt;();</div><div class="line"><a name="l00407"></a><span class="lineno">  407</span>&#160;</div><div class="line"><a name="l00408"></a><span class="lineno">  408</span>&#160;        gil_function_requires&lt;detail::RandomAccessIteratorIsMutableConcept</div><div class="line"><a name="l00409"></a><span class="lineno">  409</span>&#160;            &lt;</div><div class="line"><a name="l00410"></a><span class="lineno">  410</span>&#160;                <span class="keyword">typename</span> View::template axis&lt;0&gt;::iterator</div><div class="line"><a name="l00411"></a><span class="lineno">  411</span>&#160;            &gt;&gt;();</div><div class="line"><a name="l00412"></a><span class="lineno">  412</span>&#160;</div><div class="line"><a name="l00413"></a><span class="lineno">  413</span>&#160;        gil_function_requires&lt;detail::RandomAccessIteratorIsMutableConcept</div><div class="line"><a name="l00414"></a><span class="lineno">  414</span>&#160;            &lt;</div><div class="line"><a name="l00415"></a><span class="lineno">  415</span>&#160;                <span class="keyword">typename</span> View::template axis&lt;View::num_dimensions - 1&gt;::iterator</div><div class="line"><a name="l00416"></a><span class="lineno">  416</span>&#160;            &gt;&gt;();</div><div class="line"><a name="l00417"></a><span class="lineno">  417</span>&#160;</div><div class="line"><a name="l00418"></a><span class="lineno">  418</span>&#160;        <span class="keyword">typename</span> View::difference_type diff;</div><div class="line"><a name="l00419"></a><span class="lineno">  419</span>&#160;        initialize_it(diff);</div><div class="line"><a name="l00420"></a><span class="lineno">  420</span>&#160;        ignore_unused_variable_warning(diff);</div><div class="line"><a name="l00421"></a><span class="lineno">  421</span>&#160;</div><div class="line"><a name="l00422"></a><span class="lineno">  422</span>&#160;        <span class="keyword">typename</span> View::point_t pt;</div><div class="line"><a name="l00423"></a><span class="lineno">  423</span>&#160;        <span class="keyword">typename</span> View::value_type v;</div><div class="line"><a name="l00424"></a><span class="lineno">  424</span>&#160;        initialize_it(v);</div><div class="line"><a name="l00425"></a><span class="lineno">  425</span>&#160;</div><div class="line"><a name="l00426"></a><span class="lineno">  426</span>&#160;        view[diff] = v;</div><div class="line"><a name="l00427"></a><span class="lineno">  427</span>&#160;        view(pt) = v;</div><div class="line"><a name="l00428"></a><span class="lineno">  428</span>&#160;    }</div><div class="line"><a name="l00429"></a><span class="lineno">  429</span>&#160;    View view;</div><div class="line"><a name="l00430"></a><span class="lineno">  430</span>&#160;};</div><div class="line"><a name="l00431"></a><span class="lineno">  431</span>&#160;</div><div class="line"><a name="l00433"></a><span class="lineno">  433</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> View&gt;</div><div class="line"><a name="l00434"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1detail_1_1_random_access2_d_image_view_is_mutable_concept.html">  434</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1detail_1_1_random_access2_d_image_view_is_mutable_concept.html">RandomAccess2DImageViewIsMutableConcept</a></div><div class="line"><a name="l00435"></a><span class="lineno">  435</span>&#160;{</div><div class="line"><a name="l00436"></a><span class="lineno">  436</span>&#160;    <span class="keywordtype">void</span> constraints()</div><div class="line"><a name="l00437"></a><span class="lineno">  437</span>&#160;    {</div><div class="line"><a name="l00438"></a><span class="lineno">  438</span>&#160;        gil_function_requires&lt;detail::RandomAccessNDImageViewIsMutableConcept&lt;View&gt;&gt;();</div><div class="line"><a name="l00439"></a><span class="lineno">  439</span>&#160;        <span class="keyword">typename</span> View::x_coord_t xd = 0; ignore_unused_variable_warning(xd);</div><div class="line"><a name="l00440"></a><span class="lineno">  440</span>&#160;        <span class="keyword">typename</span> View::y_coord_t yd = 0; ignore_unused_variable_warning(yd);</div><div class="line"><a name="l00441"></a><span class="lineno">  441</span>&#160;        <span class="keyword">typename</span> View::value_type v; initialize_it(v);</div><div class="line"><a name="l00442"></a><span class="lineno">  442</span>&#160;        view(xd, yd) = v;</div><div class="line"><a name="l00443"></a><span class="lineno">  443</span>&#160;    }</div><div class="line"><a name="l00444"></a><span class="lineno">  444</span>&#160;    View view;</div><div class="line"><a name="l00445"></a><span class="lineno">  445</span>&#160;};</div><div class="line"><a name="l00446"></a><span class="lineno">  446</span>&#160;</div><div class="line"><a name="l00448"></a><span class="lineno">  448</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> View&gt;</div><div class="line"><a name="l00449"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1detail_1_1_pixel_image_view_is_mutable_concept.html">  449</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1detail_1_1_pixel_image_view_is_mutable_concept.html">PixelImageViewIsMutableConcept</a></div><div class="line"><a name="l00450"></a><span class="lineno">  450</span>&#160;{</div><div class="line"><a name="l00451"></a><span class="lineno">  451</span>&#160;    <span class="keywordtype">void</span> constraints()</div><div class="line"><a name="l00452"></a><span class="lineno">  452</span>&#160;    {</div><div class="line"><a name="l00453"></a><span class="lineno">  453</span>&#160;        gil_function_requires&lt;detail::RandomAccess2DImageViewIsMutableConcept&lt;View&gt;&gt;();</div><div class="line"><a name="l00454"></a><span class="lineno">  454</span>&#160;    }</div><div class="line"><a name="l00455"></a><span class="lineno">  455</span>&#160;};</div><div class="line"><a name="l00456"></a><span class="lineno">  456</span>&#160;</div><div class="line"><a name="l00457"></a><span class="lineno">  457</span>&#160;} <span class="comment">// namespace detail</span></div><div class="line"><a name="l00458"></a><span class="lineno">  458</span>&#160;</div><div class="line"><a name="l00468"></a><span class="lineno">  468</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> View&gt;</div><div class="line"><a name="l00469"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1_mutable_random_access_n_d_image_view_concept.html">  469</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1_mutable_random_access_n_d_image_view_concept.html">MutableRandomAccessNDImageViewConcept</a></div><div class="line"><a name="l00470"></a><span class="lineno">  470</span>&#160;{</div><div class="line"><a name="l00471"></a><span class="lineno">  471</span>&#160;    <span class="keywordtype">void</span> constraints()</div><div class="line"><a name="l00472"></a><span class="lineno">  472</span>&#160;    {</div><div class="line"><a name="l00473"></a><span class="lineno">  473</span>&#160;        gil_function_requires&lt;RandomAccessNDImageViewConcept&lt;View&gt;&gt;();</div><div class="line"><a name="l00474"></a><span class="lineno">  474</span>&#160;        gil_function_requires&lt;detail::RandomAccessNDImageViewIsMutableConcept&lt;View&gt;&gt;();</div><div class="line"><a name="l00475"></a><span class="lineno">  475</span>&#160;    }</div><div class="line"><a name="l00476"></a><span class="lineno">  476</span>&#160;};</div><div class="line"><a name="l00477"></a><span class="lineno">  477</span>&#160;</div><div class="line"><a name="l00485"></a><span class="lineno">  485</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> View&gt;</div><div class="line"><a name="l00486"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1_mutable_random_access2_d_image_view_concept.html">  486</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1_mutable_random_access2_d_image_view_concept.html">MutableRandomAccess2DImageViewConcept</a></div><div class="line"><a name="l00487"></a><span class="lineno">  487</span>&#160;{</div><div class="line"><a name="l00488"></a><span class="lineno">  488</span>&#160;    <span class="keywordtype">void</span> constraints()</div><div class="line"><a name="l00489"></a><span class="lineno">  489</span>&#160;    {</div><div class="line"><a name="l00490"></a><span class="lineno">  490</span>&#160;        gil_function_requires&lt;RandomAccess2DImageViewConcept&lt;View&gt;&gt;();</div><div class="line"><a name="l00491"></a><span class="lineno">  491</span>&#160;        gil_function_requires&lt;detail::RandomAccess2DImageViewIsMutableConcept&lt;View&gt;&gt;();</div><div class="line"><a name="l00492"></a><span class="lineno">  492</span>&#160;    }</div><div class="line"><a name="l00493"></a><span class="lineno">  493</span>&#160;};</div><div class="line"><a name="l00494"></a><span class="lineno">  494</span>&#160;</div><div class="line"><a name="l00502"></a><span class="lineno">  502</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> View&gt;</div><div class="line"><a name="l00503"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1_mutable_image_view_concept.html">  503</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1_mutable_image_view_concept.html">MutableImageViewConcept</a></div><div class="line"><a name="l00504"></a><span class="lineno">  504</span>&#160;{</div><div class="line"><a name="l00505"></a><span class="lineno">  505</span>&#160;    <span class="keywordtype">void</span> constraints()</div><div class="line"><a name="l00506"></a><span class="lineno">  506</span>&#160;    {</div><div class="line"><a name="l00507"></a><span class="lineno">  507</span>&#160;        gil_function_requires&lt;ImageViewConcept&lt;View&gt;&gt;();</div><div class="line"><a name="l00508"></a><span class="lineno">  508</span>&#160;        gil_function_requires&lt;detail::PixelImageViewIsMutableConcept&lt;View&gt;&gt;();</div><div class="line"><a name="l00509"></a><span class="lineno">  509</span>&#160;    }</div><div class="line"><a name="l00510"></a><span class="lineno">  510</span>&#160;};</div><div class="line"><a name="l00511"></a><span class="lineno">  511</span>&#160;</div><div class="line"><a name="l00520"></a><span class="lineno">  520</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> V1, <span class="keyword">typename</span> V2&gt;</div><div class="line"><a name="l00521"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1views__are__compatible.html">  521</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1views__are__compatible.html">views_are_compatible</a></div><div class="line"><a name="l00522"></a><span class="lineno">  522</span>&#160;    : <a class="code" href="structboost_1_1gil_1_1pixels__are__compatible.html">pixels_are_compatible</a>&lt;typename V1::value_type, typename V2::value_type&gt;</div><div class="line"><a name="l00523"></a><span class="lineno">  523</span>&#160;{</div><div class="line"><a name="l00524"></a><span class="lineno">  524</span>&#160;};</div><div class="line"><a name="l00525"></a><span class="lineno">  525</span>&#160;</div><div class="line"><a name="l00537"></a><span class="lineno">  537</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> V1, <span class="keyword">typename</span> V2&gt;</div><div class="line"><a name="l00538"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1_views_compatible_concept.html">  538</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1_views_compatible_concept.html">ViewsCompatibleConcept</a></div><div class="line"><a name="l00539"></a><span class="lineno">  539</span>&#160;{</div><div class="line"><a name="l00540"></a><span class="lineno">  540</span>&#160;    <span class="keywordtype">void</span> constraints()</div><div class="line"><a name="l00541"></a><span class="lineno">  541</span>&#160;    {</div><div class="line"><a name="l00542"></a><span class="lineno">  542</span>&#160;        static_assert(<a class="code" href="structboost_1_1gil_1_1views__are__compatible.html">views_are_compatible&lt;V1, V2&gt;::value</a>, <span class="stringliteral">&quot;&quot;</span>);</div><div class="line"><a name="l00543"></a><span class="lineno">  543</span>&#160;    }</div><div class="line"><a name="l00544"></a><span class="lineno">  544</span>&#160;};</div><div class="line"><a name="l00545"></a><span class="lineno">  545</span>&#160;</div><div class="line"><a name="l00546"></a><span class="lineno">  546</span>&#160;}} <span class="comment">// namespace boost::gil</span></div><div class="line"><a name="l00547"></a><span class="lineno">  547</span>&#160;</div><div class="line"><a name="l00548"></a><span class="lineno">  548</span>&#160;<span class="preprocessor">#if defined(BOOST_CLANG)</span></div><div class="line"><a name="l00549"></a><span class="lineno">  549</span>&#160;<span class="preprocessor">#pragma clang diagnostic pop</span></div><div class="line"><a name="l00550"></a><span class="lineno">  550</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00551"></a><span class="lineno">  551</span>&#160;</div><div class="line"><a name="l00552"></a><span class="lineno">  552</span>&#160;<span class="preprocessor">#if defined(BOOST_GCC) &amp;&amp; (BOOST_GCC &gt;= 40900)</span></div><div class="line"><a name="l00553"></a><span class="lineno">  553</span>&#160;<span class="preprocessor">#pragma GCC diagnostic pop</span></div><div class="line"><a name="l00554"></a><span class="lineno">  554</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00555"></a><span class="lineno">  555</span>&#160;</div><div class="line"><a name="l00556"></a><span class="lineno">  556</span>&#160;<span class="preprocessor">#endif</span></div><div class="ttc" id="structboost_1_1gil_1_1_mutable_random_access2_d_image_view_concept_html"><div class="ttname"><a href="structboost_1_1gil_1_1_mutable_random_access2_d_image_view_concept.html">boost::gil::MutableRandomAccess2DImageViewConcept</a></div><div class="ttdoc">2-dimensional view over mutable values</div><div class="ttdef"><b>Definition:</b> concepts/image_view.hpp:486</div></div>
  51 <div class="ttc" id="structboost_1_1gil_1_1detail_1_1_random_access_n_d_image_view_is_mutable_concept_html"><div class="ttname"><a href="structboost_1_1gil_1_1detail_1_1_random_access_n_d_image_view_is_mutable_concept.html">boost::gil::detail::RandomAccessNDImageViewIsMutableConcept</a></div><div class="ttdef"><b>Definition:</b> concepts/image_view.hpp:395</div></div>
  52 <div class="ttc" id="structboost_1_1gil_1_1_mutable_random_access_n_d_image_view_concept_html"><div class="ttname"><a href="structboost_1_1gil_1_1_mutable_random_access_n_d_image_view_concept.html">boost::gil::MutableRandomAccessNDImageViewConcept</a></div><div class="ttdoc">N-dimensional view over mutable values.</div><div class="ttdef"><b>Definition:</b> concepts/image_view.hpp:469</div></div>
  53 <div class="ttc" id="structboost_1_1gil_1_1_collection_image_view_concept_html"><div class="ttname"><a href="structboost_1_1gil_1_1_collection_image_view_concept.html">boost::gil::CollectionImageViewConcept</a></div><div class="ttdoc">GIL view as Collection.</div><div class="ttdef"><b>Definition:</b> concepts/image_view.hpp:273</div></div>
  54 <div class="ttc" id="structboost_1_1gil_1_1views__are__compatible_html"><div class="ttname"><a href="structboost_1_1gil_1_1views__are__compatible.html">boost::gil::views_are_compatible</a></div><div class="ttdoc">Returns whether two views are compatible.</div><div class="ttdef"><b>Definition:</b> concepts/image_view.hpp:521</div></div>
  55 <div class="ttc" id="structboost_1_1gil_1_1_reversible_collection_image_view_concept_html"><div class="ttname"><a href="structboost_1_1gil_1_1_reversible_collection_image_view_concept.html">boost::gil::ReversibleCollectionImageViewConcept</a></div><div class="ttdoc">GIL view as ReversibleCollection.</div><div class="ttdef"><b>Definition:</b> concepts/image_view.hpp:335</div></div>
  56 <div class="ttc" id="structboost_1_1gil_1_1detail_1_1_random_access2_d_image_view_is_mutable_concept_html"><div class="ttname"><a href="structboost_1_1gil_1_1detail_1_1_random_access2_d_image_view_is_mutable_concept.html">boost::gil::detail::RandomAccess2DImageViewIsMutableConcept</a></div><div class="ttdef"><b>Definition:</b> concepts/image_view.hpp:434</div></div>
  57 <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>
  58 <div class="ttc" id="structboost_1_1gil_1_1_mutable_image_view_concept_html"><div class="ttname"><a href="structboost_1_1gil_1_1_mutable_image_view_concept.html">boost::gil::MutableImageViewConcept</a></div><div class="ttdoc">GIL's 2-dimensional view over mutable GIL pixels.</div><div class="ttdef"><b>Definition:</b> concepts/image_view.hpp:503</div></div>
  59 <div class="ttc" id="structboost_1_1gil_1_1pixels__are__compatible_html"><div class="ttname"><a href="structboost_1_1gil_1_1pixels__are__compatible.html">boost::gil::pixels_are_compatible</a></div><div class="ttdoc">Returns whether two pixels are compatible Pixels are compatible if their channels and color space typ...</div><div class="ttdef"><b>Definition:</b> concepts/pixel.hpp:225</div></div>
  60 <div class="ttc" id="structboost_1_1gil_1_1_image_view_concept_html"><div class="ttname"><a href="structboost_1_1gil_1_1_image_view_concept.html">boost::gil::ImageViewConcept</a></div><div class="ttdoc">GIL's 2-dimensional view over immutable GIL pixels.</div><div class="ttdef"><b>Definition:</b> concepts/image_view.hpp:374</div></div>
  61 <div class="ttc" id="structboost_1_1gil_1_1_random_access2_d_image_view_concept_html"><div class="ttname"><a href="structboost_1_1gil_1_1_random_access2_d_image_view_concept.html">boost::gil::RandomAccess2DImageViewConcept</a></div><div class="ttdoc">2-dimensional view over immutable values</div><div class="ttdef"><b>Definition:</b> concepts/image_view.hpp:220</div></div>
  62 <div class="ttc" id="structboost_1_1gil_1_1_forward_collection_image_view_concept_html"><div class="ttname"><a href="structboost_1_1gil_1_1_forward_collection_image_view_concept.html">boost::gil::ForwardCollectionImageViewConcept</a></div><div class="ttdoc">GIL view as ForwardCollection.</div><div class="ttdef"><b>Definition:</b> concepts/image_view.hpp:312</div></div>
  63 <div class="ttc" id="structboost_1_1gil_1_1_views_compatible_concept_html"><div class="ttname"><a href="structboost_1_1gil_1_1_views_compatible_concept.html">boost::gil::ViewsCompatibleConcept</a></div><div class="ttdoc">Views are compatible if they have the same color spaces and compatible channel values.</div><div class="ttdef"><b>Definition:</b> concepts/image_view.hpp:538</div></div>
  64 <div class="ttc" id="structboost_1_1gil_1_1_random_access_n_d_image_view_concept_html"><div class="ttname"><a href="structboost_1_1gil_1_1_random_access_n_d_image_view_concept.html">boost::gil::RandomAccessNDImageViewConcept</a></div><div class="ttdoc">N-dimensional view over immutable values.</div><div class="ttdef"><b>Definition:</b> concepts/image_view.hpp:102</div></div>
  65 <div class="ttc" id="structboost_1_1gil_1_1detail_1_1_pixel_image_view_is_mutable_concept_html"><div class="ttname"><a href="structboost_1_1gil_1_1detail_1_1_pixel_image_view_is_mutable_concept.html">boost::gil::detail::PixelImageViewIsMutableConcept</a></div><div class="ttdef"><b>Definition:</b> concepts/image_view.hpp:449</div></div>
  66 <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>
  67 <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>
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