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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">//</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment">// Copyright 2005-2007 Adobe Systems Incorporated</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment">//</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment">// Distributed under the Boost Software License, Version 1.0</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment">// See accompanying file LICENSE_1_0.txt or copy at</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment">// http://www.boost.org/LICENSE_1_0.txt</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="comment">//</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="preprocessor">#ifndef BOOST_GIL_VIRTUAL_LOCATOR_HPP</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="preprocessor">#define BOOST_GIL_VIRTUAL_LOCATOR_HPP</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;</div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="preprocessor">#include &lt;boost/gil/dynamic_step.hpp&gt;</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="preprocessor">#include &lt;boost/gil/position_iterator.hpp&gt;</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;</div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="preprocessor">#include &lt;boost/assert.hpp&gt;</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="preprocessor">#include &lt;boost/iterator/iterator_facade.hpp&gt;</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;</div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespaceboost.html">boost</a> { <span class="keyword">namespace </span>gil {</div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;</div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> DerefFn, <span class="keywordtype">bool</span> IsTransposed&gt;</div><div class="line"><a name="l00032"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1virtual__2d__locator.html"> 32</a></span>&#160;<span class="keyword">class </span><a class="code" href="classboost_1_1gil_1_1virtual__2d__locator.html">virtual_2d_locator</a></div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160; : <span class="keyword">public</span> <a class="code" href="classboost_1_1gil_1_1pixel__2d__locator__base.html">pixel_2d_locator_base</a></div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160; &lt;</div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160; virtual_2d_locator&lt;DerefFn, IsTransposed&gt;,</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160; position_iterator&lt;DerefFn, IsTransposed&gt;,</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160; position_iterator&lt;DerefFn, 1-IsTransposed&gt;</div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160; &gt;</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160;{</div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160; <span class="keyword">using</span> <a class="code" href="classboost_1_1gil_1_1virtual__2d__locator.html">this_t</a> = <a class="code" href="classboost_1_1gil_1_1virtual__2d__locator.html">virtual_2d_locator&lt;DerefFn, IsTransposed&gt;</a>;</div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160;<span class="keyword">public</span>:</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; <span class="keyword">using</span> <a class="code" href="classboost_1_1gil_1_1pixel__2d__locator__base.html">parent_t</a> = <a class="code" href="classboost_1_1gil_1_1pixel__2d__locator__base.html">pixel_2d_locator_base</a></div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; &lt;</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160; <a class="code" href="classboost_1_1gil_1_1virtual__2d__locator.html">virtual_2d_locator&lt;DerefFn, IsTransposed&gt;</a>,</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; <a class="code" href="structboost_1_1gil_1_1position__iterator.html">position_iterator&lt;DerefFn, IsTransposed&gt;</a>,</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; <a class="code" href="structboost_1_1gil_1_1position__iterator.html">position_iterator</a>&lt;DerefFn, 1-IsTransposed&gt;</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; &gt;;</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; <span class="keyword">using</span> <a class="code" href="classboost_1_1gil_1_1virtual__2d__locator.html">const_t</a> = <a class="code" 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 name="l00049"></a><span class="lineno"> 49</span>&#160; <span class="keyword">using</span> deref_fn_t = DerefFn;</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; <span class="keyword">using</span> point_t = <span class="keyword">typename</span> <a class="code" href="classboost_1_1gil_1_1point.html">parent_t::point_t</a>;</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; <span class="keyword">using</span> coord_t = <span class="keyword">typename</span> parent_t::coord_t;</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; <span class="keyword">using</span> x_coord_t = <span class="keyword">typename</span> parent_t::x_coord_t;</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; <span class="keyword">using</span> y_coord_t = <span class="keyword">typename</span> parent_t::y_coord_t;</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; <span class="keyword">using</span> x_iterator = <span class="keyword">typename</span> <a class="code" href="structboost_1_1gil_1_1position__iterator.html">parent_t::x_iterator</a>;</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; <span class="keyword">using</span> y_iterator = <span class="keyword">typename</span> <a class="code" href="structboost_1_1gil_1_1position__iterator.html">parent_t::y_iterator</a>;</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160;</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; <span class="keyword">template</span> &lt;<span class="keyword">typename</span> NewDerefFn&gt;</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; <span class="keyword">struct </span>add_deref</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; {</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; <span class="keyword">using</span> type = <a class="code" 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 name="l00061"></a><span class="lineno"> 61</span>&#160;</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; <span class="keyword">static</span> type make(<a class="code" 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 name="l00063"></a><span class="lineno"> 63</span>&#160; {</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; <span class="keywordflow">return</span> type(loc.pos(), loc.step(),</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; <a class="code" 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 name="l00066"></a><span class="lineno"> 66</span>&#160; }</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; };</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160;</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; <a class="code" href="classboost_1_1gil_1_1virtual__2d__locator.html">virtual_2d_locator</a>(</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; point_t <span class="keyword">const</span>&amp; p = {0, 0},</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; point_t <span class="keyword">const</span>&amp; step = {1, 1},</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; deref_fn_t <span class="keyword">const</span>&amp; deref_fn = deref_fn_t())</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; : y_pos_(p, step, deref_fn)</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; {}</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160;</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; <span class="keyword">template</span> &lt;<span class="keyword">typename</span> D, <span class="keywordtype">bool</span> TR&gt;</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; <a class="code" href="classboost_1_1gil_1_1virtual__2d__locator.html">virtual_2d_locator</a>(<a class="code" 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 name="l00078"></a><span class="lineno"> 78</span>&#160; : y_pos_(loc.pos(), point_t(loc.step().x, loc.step().y * y_step), loc.deref_fn())</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; {}</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160;</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; <span class="keyword">template</span> &lt;<span class="keyword">typename</span> D, <span class="keywordtype">bool</span> TR&gt;</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; virtual_2d_locator(<a class="code" 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 name="l00083"></a><span class="lineno"> 83</span>&#160; : y_pos_(loc.pos()</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160; , transpose ?</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; point_t(loc.step().x * y_step, loc.step().y * x_step) :</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; point_t(loc.step().x * x_step, loc.step().y * y_step)</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; , loc.deref_fn())</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; {</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160; BOOST_ASSERT(transpose == (IsTransposed != TR));</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160; }</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160;</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; <span class="keyword">template</span> &lt;<span class="keyword">typename</span> D, <span class="keywordtype">bool</span> TR&gt;</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; virtual_2d_locator(<a class="code" 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 name="l00094"></a><span class="lineno"> 94</span>&#160;</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160; virtual_2d_locator(virtual_2d_locator <span class="keyword">const</span>&amp; other) : y_pos_(other.y_pos_) {}</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; virtual_2d_locator&amp; operator=(virtual_2d_locator <span class="keyword">const</span>&amp; other) = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160;</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160; <span class="keywordtype">bool</span> operator==(<span class="keyword">const</span> <a class="code" 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 name="l00099"></a><span class="lineno"> 99</span>&#160;</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; <span class="keyword">auto</span> x() -&gt; x_iterator&amp;</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; {</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; <span class="keywordflow">return</span> *gil_reinterpret_cast&lt;x_iterator*&gt;(<span class="keyword">this</span>);</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160; }</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160;</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160; <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 name="l00106"></a><span class="lineno"> 106</span>&#160; {</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160; <span class="keywordflow">return</span> *gil_reinterpret_cast_c&lt;x_iterator const*&gt;(<span class="keyword">this</span>);</div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160; }</div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160;</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160; <span class="keyword">auto</span> y() -&gt; y_iterator&amp; { <span class="keywordflow">return</span> y_pos_; }</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160; <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 name="l00112"></a><span class="lineno"> 112</span>&#160;</div><div class="line"><a name="l00114"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1virtual__2d__locator.html#a250806294188ba94e50e45a3c67aa0ab"> 114</a></span>&#160; <span class="keyword">auto</span> <a class="code" href="classboost_1_1gil_1_1virtual__2d__locator.html#a250806294188ba94e50e45a3c67aa0ab">y_distance_to</a>(<a class="code" href="classboost_1_1gil_1_1virtual__2d__locator.html">this_t</a> <span class="keyword">const</span>&amp; it2, x_coord_t) const -&gt; y_coord_t</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160; {</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160; <span class="keywordflow">return</span> (it2.pos()[1 - IsTransposed] - pos()[1 - IsTransposed])</div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160; / step()[1 - IsTransposed];</div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160; }</div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160;</div><div class="line"><a name="l00122"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1virtual__2d__locator.html#a6160a6a46b4f4cbef39a28a45027060c"> 122</a></span>&#160; <span class="keywordtype">bool</span> <a class="code" href="classboost_1_1gil_1_1virtual__2d__locator.html#a6160a6a46b4f4cbef39a28a45027060c">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 name="l00123"></a><span class="lineno"> 123</span>&#160;</div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160; <span class="comment">// Methods specific for virtual 2D locator</span></div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160; <span class="keyword">auto</span> pos() <span class="keyword">const</span> -&gt; point_t <span class="keyword">const</span>&amp; { <span class="keywordflow">return</span> y_pos_.pos(); }</div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160; <span class="keyword">auto</span> step() <span class="keyword">const</span> -&gt; point_t <span class="keyword">const</span>&amp; { <span class="keywordflow">return</span> y_pos_.step(); }</div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160; <span class="keyword">auto</span> deref_fn() <span class="keyword">const</span> -&gt; deref_fn_t <span class="keyword">const</span>&amp; { <span class="keywordflow">return</span> y_pos_.deref_fn(); }</div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160;</div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160;<span class="keyword">private</span>:</div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160; <span class="keyword">template</span> &lt;<span class="keyword">typename</span> D, <span class="keywordtype">bool</span> TR&gt;</div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160; <span class="keyword">friend</span> <span class="keyword">class </span>virtual_2d_locator;</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; y_iterator y_pos_; <span class="comment">// current position, the step and the dereference object</span></div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160;};</div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160;</div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160;<span class="comment">// PixelBasedConcept</span></div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> D, <span class="keywordtype">bool</span> TR&gt;</div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160;<span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1channel__type.html">channel_type</a>&lt;virtual_2d_locator&lt;D, TR&gt;&gt;</div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160; : <a class="code" href="structboost_1_1gil_1_1channel__type.html">channel_type</a>&lt;typename virtual_2d_locator&lt;D, TR&gt;::parent_t&gt;</div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160;{</div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160;};</div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160;</div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> D, <span class="keywordtype">bool</span> TR&gt;</div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160;<span class="keyword">struct </span>color_space_type&lt;virtual_2d_locator&lt;D, TR&gt;&gt;</div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160; : color_space_type&lt;typename virtual_2d_locator&lt;D, TR&gt;::parent_t&gt;</div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160;{</div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160;};</div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160;</div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> D, <span class="keywordtype">bool</span> TR&gt;</div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160;<span class="keyword">struct </span>channel_mapping_type&lt;virtual_2d_locator&lt;D, TR&gt;&gt;</div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160; : channel_mapping_type&lt;typename virtual_2d_locator&lt;D, TR&gt;::parent_t&gt;</div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160;{</div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160;};</div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160;</div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> D, <span class="keywordtype">bool</span> TR&gt;</div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160;<span class="keyword">struct </span>is_planar&lt;virtual_2d_locator&lt;D, TR&gt;&gt;</div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160; : is_planar&lt;typename virtual_2d_locator&lt;D, TR&gt;::parent_t&gt;</div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160;{</div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160;};</div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160;</div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160;<span class="comment">// HasDynamicXStepTypeConcept</span></div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> D, <span class="keywordtype">bool</span> TR&gt;</div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>&#160;<span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1dynamic__x__step__type.html">dynamic_x_step_type</a>&lt;virtual_2d_locator&lt;D,TR&gt;&gt;</div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span>&#160;{</div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>&#160; <span class="keyword">using</span> type = <a class="code" href="classboost_1_1gil_1_1virtual__2d__locator.html">virtual_2d_locator&lt;D,TR&gt;</a>;</div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160;};</div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span>&#160;</div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160;<span class="comment">// HasDynamicYStepTypeConcept</span></div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> D, <span class="keywordtype">bool</span> TR&gt;</div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span>&#160;<span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1dynamic__y__step__type.html">dynamic_y_step_type</a>&lt;virtual_2d_locator&lt;D,TR&gt;&gt;</div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span>&#160;{</div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>&#160; <span class="keyword">using</span> type = <a class="code" href="classboost_1_1gil_1_1virtual__2d__locator.html">virtual_2d_locator&lt;D,TR&gt;</a>;</div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>&#160;};</div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160;</div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160;<span class="comment">// HasTransposedTypeConcept</span></div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> D, <span class="keywordtype">bool</span> IsTransposed&gt;</div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span>&#160;<span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1transposed__type.html">transposed_type</a>&lt;virtual_2d_locator&lt;D,IsTransposed&gt;&gt;</div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span>&#160;{</div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span>&#160; <span class="keyword">using</span> type = virtual_2d_locator&lt;D,1-IsTransposed&gt;;</div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span>&#160;};</div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span>&#160;</div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span>&#160;}} <span class="comment">// namespace boost::gil</span></div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>&#160;</div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span>&#160;<span class="preprocessor">#endif</span></div><div class="ttc" id="namespaceboost_html"><div class="ttname"><a href="namespaceboost.html">boost</a></div><div class="ttdef"><b>Definition:</b> algorithm.hpp:30</div></div>
<div class="ttc" id="classboost_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 PixelLocatorConceptPixel locator is similar to a pixel iterator, but allows for 2D navigation of pixels within an image view. It has a 2D difference_type and supports random access operations like: </div><div class="ttdef"><b>Definition:</b> locator.hpp:109</div></div>
<div class="ttc" id="structboost_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:31</div></div>
<div class="ttc" id="classboost_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:32</div></div>
<div class="ttc" id="classboost_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="structboost_1_1gil_1_1transposed__type_html"><div class="ttname"><a href="structboost_1_1gil_1_1transposed__type.html">boost::gil::transposed_type</a></div><div class="ttdef"><b>Definition:</b> image_view_factory.hpp:40</div></div>
<div class="ttc" id="classboost_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:121</div></div>
<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>
<div class="ttc" id="classboost_1_1gil_1_1virtual__2d__locator_html_a6160a6a46b4f4cbef39a28a45027060c"><div class="ttname"><a href="classboost_1_1gil_1_1virtual__2d__locator.html#a6160a6a46b4f4cbef39a28a45027060c">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="structboost_1_1gil_1_1channel__type_html"><div class="ttname"><a href="structboost_1_1gil_1_1channel__type.html">boost::gil::channel_type</a></div><div class="ttdef"><b>Definition:</b> color_convert.hpp:31</div></div>
<div class="ttc" id="classboost_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> locator.hpp:28</div></div>
<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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