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<div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">//</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment">// Copyright 2005-2007 Adobe Systems Incorporated</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment">//</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment">// Distributed under the Boost Software License, Version 1.0</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment">// See accompanying file LICENSE_1_0.txt or copy at</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="comment">// http://www.boost.org/LICENSE_1_0.txt</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="comment">//</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="preprocessor">#ifndef BOOST_GIL_VIRTUAL_LOCATOR_HPP</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="preprocessor">#define BOOST_GIL_VIRTUAL_LOCATOR_HPP</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span> </div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="preprocessor">#include &lt;boost/gil/dynamic_step.hpp&gt;</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="preprocessor">#include &lt;boost/gil/position_iterator.hpp&gt;</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span> </div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="preprocessor">#include &lt;boost/assert.hpp&gt;</span></div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="preprocessor">#include &lt;boost/iterator/iterator_facade.hpp&gt;</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span> </div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceboost.html">boost</a> { <span class="keyword">namespace </span>gil {</div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span> </div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> DerefFn, <span class="keywordtype">bool</span> IsTransposed&gt;</div>
<div class="foldopen" id="foldopen00032" data-start="{" data-end="};">
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1virtual__2d__locator.html"> 32</a></span><span class="keyword">class </span><a class="code hl_class" href="classboost_1_1gil_1_1virtual__2d__locator.html">virtual_2d_locator</a></div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> : <span class="keyword">public</span> <a class="code hl_class" href="classboost_1_1gil_1_1pixel__2d__locator__base.html">pixel_2d_locator_base</a></div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span> &lt;</div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> virtual_2d_locator&lt;DerefFn, IsTransposed&gt;,</div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> position_iterator&lt;DerefFn, IsTransposed&gt;,</div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> position_iterator&lt;DerefFn, 1-IsTransposed&gt;</div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> &gt;</div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span>{</div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> <span class="keyword">using </span><a class="code hl_class" href="classboost_1_1gil_1_1virtual__2d__locator.html">this_t</a> = <a class="code hl_class" href="classboost_1_1gil_1_1virtual__2d__locator.html">virtual_2d_locator&lt;DerefFn, IsTransposed&gt;</a>;</div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span><span class="keyword">public</span>:</div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> <span class="keyword">using </span><a class="code hl_class" href="classboost_1_1gil_1_1pixel__2d__locator__base.html">parent_t</a> = <a class="code hl_class" href="classboost_1_1gil_1_1pixel__2d__locator__base.html">pixel_2d_locator_base</a></div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> &lt;</div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> <a class="code hl_class" href="classboost_1_1gil_1_1virtual__2d__locator.html">virtual_2d_locator&lt;DerefFn, IsTransposed&gt;</a>,</div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> <a class="code hl_struct" href="structboost_1_1gil_1_1position__iterator.html">position_iterator&lt;DerefFn, IsTransposed&gt;</a>,</div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> <a class="code hl_struct" href="structboost_1_1gil_1_1position__iterator.html">position_iterator</a>&lt;DerefFn, 1-IsTransposed&gt;</div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> &gt;;</div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> <span class="keyword">using </span><a class="code hl_class" href="classboost_1_1gil_1_1virtual__2d__locator.html">const_t</a> = <a class="code hl_class" href="classboost_1_1gil_1_1virtual__2d__locator.html">virtual_2d_locator&lt;typename DerefFn::const_t, IsTransposed&gt;</a>;</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> <span class="keyword">using </span>deref_fn_t = DerefFn;</div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> <span class="keyword">using </span>point_t = <span class="keyword">typename</span> <a class="code hl_class" href="classboost_1_1gil_1_1point.html">parent_t::point_t</a>;</div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> <span class="keyword">using </span>coord_t = <span class="keyword">typename</span> parent_t::coord_t;</div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> <span class="keyword">using </span>x_coord_t = <span class="keyword">typename</span> parent_t::x_coord_t;</div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> <span class="keyword">using </span>y_coord_t = <span class="keyword">typename</span> parent_t::y_coord_t;</div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> <span class="keyword">using </span>x_iterator = <span class="keyword">typename</span> <a class="code hl_struct" href="structboost_1_1gil_1_1position__iterator.html">parent_t::x_iterator</a>;</div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> <span class="keyword">using </span>y_iterator = <span class="keyword">typename</span> <a class="code hl_struct" href="structboost_1_1gil_1_1position__iterator.html">parent_t::y_iterator</a>;</div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> </div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> <span class="keyword">template</span> &lt;<span class="keyword">typename</span> NewDerefFn&gt;</div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> <span class="keyword">struct </span>add_deref</div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> {</div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> <span class="keyword">using </span>type = <a class="code hl_class" href="classboost_1_1gil_1_1virtual__2d__locator.html">virtual_2d_locator&lt;deref_compose&lt;NewDerefFn, DerefFn&gt;</a>, IsTransposed&gt;;</div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> </div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> <span class="keyword">static</span> type make(<a class="code hl_class" href="classboost_1_1gil_1_1virtual__2d__locator.html">this_t</a> <span class="keyword">const</span>&amp; loc, NewDerefFn <span class="keyword">const</span>&amp; new_deref_fn)</div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> {</div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> <span class="keywordflow">return</span> type(loc.pos(), loc.step(),</div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> <a class="code hl_class" href="classboost_1_1gil_1_1deref__compose.html">deref_compose&lt;NewDerefFn, DerefFn&gt;</a>(new_deref_fn, loc.deref_fn()));</div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> }</div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> };</div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> </div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> <a class="code hl_class" href="classboost_1_1gil_1_1virtual__2d__locator.html">virtual_2d_locator</a>(</div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> point_t <span class="keyword">const</span>&amp; p = {0, 0},</div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> point_t <span class="keyword">const</span>&amp; step = {1, 1},</div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> deref_fn_t <span class="keyword">const</span>&amp; deref_fn = deref_fn_t())</div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> : y_pos_(p, step, deref_fn)</div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> {}</div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> </div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> <span class="keyword">template</span> &lt;<span class="keyword">typename</span> D, <span class="keywordtype">bool</span> TR&gt;</div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> <a class="code hl_class" href="classboost_1_1gil_1_1virtual__2d__locator.html">virtual_2d_locator</a>(<a class="code hl_class" href="classboost_1_1gil_1_1virtual__2d__locator.html">virtual_2d_locator&lt;D, TR&gt;</a> <span class="keyword">const</span> &amp;loc, coord_t y_step)</div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> : y_pos_(loc.pos(), point_t(loc.step().x, loc.step().y * y_step), loc.deref_fn())</div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> {}</div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> </div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> <span class="keyword">template</span> &lt;<span class="keyword">typename</span> D, <span class="keywordtype">bool</span> TR&gt;</div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> <a class="code hl_class" href="classboost_1_1gil_1_1virtual__2d__locator.html">virtual_2d_locator</a>(<a class="code hl_class" href="classboost_1_1gil_1_1virtual__2d__locator.html">virtual_2d_locator&lt;D, TR&gt;</a> <span class="keyword">const</span>&amp; loc, coord_t x_step, coord_t y_step, <span class="keywordtype">bool</span> transpose = <span class="keyword">false</span>)</div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> : y_pos_(loc.pos()</div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> , transpose ?</div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> point_t(loc.step().x * y_step, loc.step().y * x_step) :</div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> point_t(loc.step().x * x_step, loc.step().y * y_step)</div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> , loc.deref_fn())</div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> {</div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> BOOST_ASSERT(transpose == (IsTransposed != TR));</div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> }</div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> </div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> <span class="keyword">template</span> &lt;<span class="keyword">typename</span> D, <span class="keywordtype">bool</span> TR&gt;</div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> <a class="code hl_class" href="classboost_1_1gil_1_1virtual__2d__locator.html">virtual_2d_locator</a>(<a class="code hl_class" href="classboost_1_1gil_1_1virtual__2d__locator.html">virtual_2d_locator&lt;D, TR&gt;</a> <span class="keyword">const</span>&amp; other) : y_pos_(other.y_pos_) {}</div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> </div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span> <a class="code hl_class" href="classboost_1_1gil_1_1virtual__2d__locator.html">virtual_2d_locator</a>(<a class="code hl_class" href="classboost_1_1gil_1_1virtual__2d__locator.html">virtual_2d_locator</a> <span class="keyword">const</span>&amp; other) : y_pos_(other.y_pos_) {}</div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> <a class="code hl_class" href="classboost_1_1gil_1_1virtual__2d__locator.html">virtual_2d_locator</a>&amp; operator=(<a class="code hl_class" href="classboost_1_1gil_1_1virtual__2d__locator.html">virtual_2d_locator</a> <span class="keyword">const</span>&amp; other) = <span class="keywordflow">default</span>;</div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> </div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> <span class="keywordtype">bool</span> operator==(<span class="keyword">const</span> <a class="code hl_class" href="classboost_1_1gil_1_1virtual__2d__locator.html">this_t</a>&amp; p)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> y_pos_ == p.y_pos_; }</div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> </div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> <span class="keyword">auto</span> x() -&gt; x_iterator&amp;</div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> {</div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> <span class="keywordflow">return</span> *gil_reinterpret_cast&lt;x_iterator*&gt;(<span class="keyword">this</span>);</div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> }</div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> </div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> <span class="keyword">auto</span> x() <span class="keyword">const</span> -&gt; x_iterator <span class="keyword">const</span>&amp;</div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> {</div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> <span class="keywordflow">return</span> *gil_reinterpret_cast_c&lt;x_iterator const*&gt;(<span class="keyword">this</span>);</div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> }</div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> </div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> <span class="keyword">auto</span> y() -&gt; y_iterator&amp; { <span class="keywordflow">return</span> y_pos_; }</div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> <span class="keyword">auto</span> y() <span class="keyword">const</span> -&gt; y_iterator <span class="keyword">const</span>&amp; { <span class="keywordflow">return</span> y_pos_; }</div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> </div>
<div class="foldopen" id="foldopen00114" data-start="{" data-end="}">
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1virtual__2d__locator.html#a250806294188ba94e50e45a3c67aa0ab"> 114</a></span> <span class="keyword">auto</span> <a class="code hl_function" href="classboost_1_1gil_1_1virtual__2d__locator.html#a250806294188ba94e50e45a3c67aa0ab">y_distance_to</a>(<a class="code hl_class" href="classboost_1_1gil_1_1virtual__2d__locator.html">this_t</a> <span class="keyword">const</span>&amp; it2, x_coord_t) <span class="keyword">const</span> -&gt; y_coord_t</div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span> {</div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span> <span class="keywordflow">return</span> (it2.pos()[1 - IsTransposed] - pos()[1 - IsTransposed])</div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> / step()[1 - IsTransposed];</div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> }</div>
</div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span> </div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1virtual__2d__locator.html#a5b6f376ae8856b9fdd19bd68b80a1cb0"> 122</a></span> <span class="keywordtype">bool</span> <a class="code hl_function" href="classboost_1_1gil_1_1virtual__2d__locator.html#a5b6f376ae8856b9fdd19bd68b80a1cb0">is_1d_traversable</a>(x_coord_t)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <span class="keyword">false</span>; }</div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span> </div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> <span class="comment">// Methods specific for virtual 2D locator</span></div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> <span class="keyword">auto</span> pos() const -&gt; <a class="code hl_class" href="classboost_1_1gil_1_1point.html">point_t</a> const&amp; { <span class="keywordflow">return</span> y_pos_.pos(); }</div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span> <span class="keyword">auto</span> step() const -&gt; point_t const&amp; { <span class="keywordflow">return</span> y_pos_.step(); }</div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span> <span class="keyword">auto</span> deref_fn() const -&gt; deref_fn_t const&amp; { <span class="keywordflow">return</span> y_pos_.deref_fn(); }</div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> </div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span><span class="keyword">private</span>:</div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span> <span class="keyword">template</span> &lt;<span class="keyword">typename</span> D, <span class="keywordtype">bool</span> TR&gt;</div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span> <span class="keyword">friend</span> <span class="keyword">class </span>virtual_2d_locator;</div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span> </div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span> y_iterator y_pos_; <span class="comment">// current position, the step and the dereference object</span></div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span>};</div>
</div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span> </div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span><span class="comment">// PixelBasedConcept</span></div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span> </div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> D, <span class="keywordtype">bool</span> TR&gt;</div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span><span class="keyword">struct </span>channel_type&lt;virtual_2d_locator&lt;D, TR&gt;&gt;</div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span> : channel_type&lt;typename virtual_2d_locator&lt;D, TR&gt;::parent_t&gt;</div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span>{</div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span>};</div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span> </div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> D, <span class="keywordtype">bool</span> TR&gt;</div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"> 147</span><span class="keyword">struct </span>color_space_type&lt;virtual_2d_locator&lt;D, TR&gt;&gt;</div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span> : color_space_type&lt;typename virtual_2d_locator&lt;D, TR&gt;::parent_t&gt;</div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span>{</div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span>};</div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"> 151</span> </div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> D, <span class="keywordtype">bool</span> TR&gt;</div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span><span class="keyword">struct </span>channel_mapping_type&lt;virtual_2d_locator&lt;D, TR&gt;&gt;</div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span> : channel_mapping_type&lt;typename virtual_2d_locator&lt;D, TR&gt;::parent_t&gt;</div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"> 155</span>{</div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span>};</div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span> </div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> D, <span class="keywordtype">bool</span> TR&gt;</div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span><span class="keyword">struct </span>is_planar&lt;virtual_2d_locator&lt;D, TR&gt;&gt;</div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span> : is_planar&lt;typename virtual_2d_locator&lt;D, TR&gt;::parent_t&gt;</div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span>{</div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span>};</div>
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno"> 163</span> </div>
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno"> 165</span><span class="comment">// HasDynamicXStepTypeConcept</span></div>
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno"> 167</span> </div>
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno"> 168</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> D, <span class="keywordtype">bool</span> TR&gt;</div>
<div class="line"><a id="l00169" name="l00169"></a><span class="lineno"> 169</span><span class="keyword">struct </span>dynamic_x_step_type&lt;virtual_2d_locator&lt;D,TR&gt;&gt;</div>
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno"> 170</span>{</div>
<div class="line"><a id="l00171" name="l00171"></a><span class="lineno"> 171</span> <span class="keyword">using </span>type = virtual_2d_locator&lt;D,TR&gt;;</div>
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno"> 172</span>};</div>
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno"> 173</span> </div>
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno"> 175</span><span class="comment">// HasDynamicYStepTypeConcept</span></div>
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno"> 177</span> </div>
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno"> 178</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> D, <span class="keywordtype">bool</span> TR&gt;</div>
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno"> 179</span><span class="keyword">struct </span>dynamic_y_step_type&lt;virtual_2d_locator&lt;D,TR&gt;&gt;</div>
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno"> 180</span>{</div>
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno"> 181</span> <span class="keyword">using </span>type = virtual_2d_locator&lt;D,TR&gt;;</div>
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno"> 182</span>};</div>
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno"> 183</span> </div>
<div class="line"><a id="l00185" name="l00185"></a><span class="lineno"> 185</span><span class="comment">// HasTransposedTypeConcept</span></div>
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno"> 187</span> </div>
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno"> 188</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> D, <span class="keywordtype">bool</span> IsTransposed&gt;</div>
<div class="line"><a id="l00189" name="l00189"></a><span class="lineno"> 189</span><span class="keyword">struct </span>transposed_type&lt;virtual_2d_locator&lt;D,IsTransposed&gt;&gt;</div>
<div class="line"><a id="l00190" name="l00190"></a><span class="lineno"> 190</span>{</div>
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno"> 191</span> <span class="keyword">using </span>type = virtual_2d_locator&lt;D,1-IsTransposed&gt;;</div>
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno"> 192</span>};</div>
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno"> 193</span> </div>
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno"> 194</span>}} <span class="comment">// namespace boost::gil</span></div>
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno"> 195</span> </div>
<div class="line"><a id="l00196" name="l00196"></a><span class="lineno"> 196</span><span class="preprocessor">#endif</span></div>
<div class="ttc" id="aclassboost_1_1gil_1_1deref__compose_html"><div class="ttname"><a href="classboost_1_1gil_1_1deref__compose.html">boost::gil::deref_compose</a></div><div class="ttdoc">Composes two dereference function objects. Similar to std::unary_compose but needs to pull some alias...</div><div class="ttdef"><b>Definition</b> utilities.hpp:131</div></div>
<div class="ttc" id="aclassboost_1_1gil_1_1pixel__2d__locator__base_html"><div class="ttname"><a href="classboost_1_1gil_1_1pixel__2d__locator__base.html">boost::gil::pixel_2d_locator_base</a></div><div class="ttdoc">base class for models of PixelLocatorConcept</div><div class="ttdef"><b>Definition</b> locator.hpp:109</div></div>
<div class="ttc" id="aclassboost_1_1gil_1_1point_html"><div class="ttname"><a href="classboost_1_1gil_1_1point.html">boost::gil::point</a></div><div class="ttdoc">2D point both axes of which have the same dimension typeModels: Point2DConcept</div><div class="ttdef"><b>Definition</b> point.hpp:36</div></div>
<div class="ttc" id="aclassboost_1_1gil_1_1virtual__2d__locator_html"><div class="ttname"><a href="classboost_1_1gil_1_1virtual__2d__locator.html">boost::gil::virtual_2d_locator</a></div><div class="ttdoc">A 2D locator over a virtual image Upon dereferencing, invokes a given function object passing it its ...</div><div class="ttdef"><b>Definition</b> virtual_locator.hpp:39</div></div>
<div class="ttc" id="aclassboost_1_1gil_1_1virtual__2d__locator_html_a250806294188ba94e50e45a3c67aa0ab"><div class="ttname"><a href="classboost_1_1gil_1_1virtual__2d__locator.html#a250806294188ba94e50e45a3c67aa0ab">boost::gil::virtual_2d_locator::y_distance_to</a></div><div class="ttdeci">auto y_distance_to(this_t const &amp;it2, x_coord_t) const -&gt; y_coord_t</div><div class="ttdoc">Returns the y distance between two x_iterators given the difference of their x positions.</div><div class="ttdef"><b>Definition</b> virtual_locator.hpp:114</div></div>
<div class="ttc" id="aclassboost_1_1gil_1_1virtual__2d__locator_html_a5b6f376ae8856b9fdd19bd68b80a1cb0"><div class="ttname"><a href="classboost_1_1gil_1_1virtual__2d__locator.html#a5b6f376ae8856b9fdd19bd68b80a1cb0">boost::gil::virtual_2d_locator::is_1d_traversable</a></div><div class="ttdeci">bool is_1d_traversable(x_coord_t) const</div><div class="ttdef"><b>Definition</b> virtual_locator.hpp:122</div></div>
<div class="ttc" id="anamespaceboost_html"><div class="ttname"><a href="namespaceboost.html">boost</a></div><div class="ttdoc">defined(BOOST_NO_CXX17_HDR_MEMORY_RESOURCE)</div><div class="ttdef"><b>Definition</b> algorithm.hpp:36</div></div>
<div class="ttc" id="astructboost_1_1gil_1_1position__iterator_html"><div class="ttname"><a href="structboost_1_1gil_1_1position__iterator.html">boost::gil::position_iterator</a></div><div class="ttdoc">An iterator that remembers its current X,Y position and invokes a function object with it upon derefe...</div><div class="ttdef"><b>Definition</b> position_iterator.hpp:35</div></div>
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