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- <div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">//</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// Copyright 2005-2007 Adobe Systems Incorporated</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">//</span></div><div class="line"><a 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 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 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 name="l00007"></a><span class="lineno"> 7</span> <span class="comment">//</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor">#ifndef BOOST_GIL_VIRTUAL_LOCATOR_HPP</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#define BOOST_GIL_VIRTUAL_LOCATOR_HPP</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> </div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include <boost/gil/dynamic_step.hpp></span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include <boost/gil/position_iterator.hpp></span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> </div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include <boost/assert.hpp></span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#include <boost/iterator/iterator_facade.hpp></span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> </div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="keyword">namespace </span>boost { <span class="keyword">namespace </span>gil {</div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> </div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="keyword">template</span> <<span class="keyword">typename</span> DerefFn, <span class="keywordtype">bool</span> IsTransposed></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> <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>  : <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>  <</div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  virtual_2d_locator<DerefFn, IsTransposed>,</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  position_iterator<DerefFn, IsTransposed>,</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  position_iterator<DerefFn, 1-IsTransposed></div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  ></div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> {</div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <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<DerefFn, IsTransposed></a>;</div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="keyword">public</span>:</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <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>  <</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <a class="code" href="classboost_1_1gil_1_1virtual__2d__locator.html">virtual_2d_locator<DerefFn, IsTransposed></a>,</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <a class="code" href="structboost_1_1gil_1_1position__iterator.html">position_iterator<DerefFn, IsTransposed></a>,</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <a class="code" href="structboost_1_1gil_1_1position__iterator.html">position_iterator</a><DerefFn, 1-IsTransposed></div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  >;</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <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<typename DerefFn::const_t, IsTransposed></a>;</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keyword">using</span> deref_fn_t = DerefFn;</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <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>  <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>  <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>  <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>  <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>  <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> </div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> NewDerefFn></div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keyword">struct </span>add_deref</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  {</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keyword">using</span> type = <a class="code" href="classboost_1_1gil_1_1virtual__2d__locator.html">virtual_2d_locator<deref_compose<NewDerefFn, DerefFn></a>, IsTransposed>;</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span> </div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <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>& loc, NewDerefFn <span class="keyword">const</span>& new_deref_fn)</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  {</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keywordflow">return</span> type(loc.pos(), loc.step(),</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <a class="code" href="classboost_1_1gil_1_1deref__compose.html">deref_compose<NewDerefFn, DerefFn></a>(new_deref_fn, loc.deref_fn()));</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  }</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  };</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span> </div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <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>  point_t <span class="keyword">const</span>& p = {0, 0},</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  point_t <span class="keyword">const</span>& step = {1, 1},</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  deref_fn_t <span class="keyword">const</span>& deref_fn = deref_fn_t())</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  : y_pos_(p, step, deref_fn)</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  {}</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span> </div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> D, <span class="keywordtype">bool</span> TR></div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <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<D, TR></a> <span class="keyword">const</span> &loc, coord_t y_step)</div><div class="line"><a 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 name="l00079"></a><span class="lineno"> 79</span>  {}</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span> </div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> D, <span class="keywordtype">bool</span> TR></div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <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<D, TR></a> <span class="keyword">const</span>& 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>  : y_pos_(loc.pos()</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  , transpose ?</div><div class="line"><a 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 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 name="l00087"></a><span class="lineno"> 87</span>  , loc.deref_fn())</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  {</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  BOOST_ASSERT(transpose == (IsTransposed != TR));</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  }</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span> </div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> D, <span class="keywordtype">bool</span> TR></div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <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<D, TR></a> <span class="keyword">const</span>& other) : y_pos_(other.y_pos_) {}</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span> </div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <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</a> <span class="keyword">const</span>& other) : y_pos_(other.y_pos_) {}</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <a class="code" href="classboost_1_1gil_1_1virtual__2d__locator.html">virtual_2d_locator</a>& operator=(<a class="code" href="classboost_1_1gil_1_1virtual__2d__locator.html">virtual_2d_locator</a> <span class="keyword">const</span>& other) = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span> </div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <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>& 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> </div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keyword">auto</span> x() -> x_iterator&</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  {</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keywordflow">return</span> *gil_reinterpret_cast<x_iterator*>(<span class="keyword">this</span>);</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  }</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span> </div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keyword">auto</span> x() <span class="keyword">const</span> -> x_iterator <span class="keyword">const</span>&</div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  {</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="keywordflow">return</span> *gil_reinterpret_cast_c<x_iterator const*>(<span class="keyword">this</span>);</div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  }</div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span> </div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keyword">auto</span> y() -> y_iterator& { <span class="keywordflow">return</span> y_pos_; }</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keyword">auto</span> y() <span class="keyword">const</span> -> y_iterator <span class="keyword">const</span>& { <span class="keywordflow">return</span> y_pos_; }</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span> </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>  <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>& it2, x_coord_t) <span class="keyword">const</span> -> y_coord_t</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  {</div><div class="line"><a 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 name="l00117"></a><span class="lineno"> 117</span>  / step()[1 - IsTransposed];</div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  }</div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span> </div><div class="line"><a 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" 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 name="l00123"></a><span class="lineno"> 123</span> </div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="comment">// Methods specific for virtual 2D locator</span></div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="keyword">auto</span> pos() const -> <a class="code" href="classboost_1_1gil_1_1point.html">point_t</a> const& { <span class="keywordflow">return</span> y_pos_.pos(); }</div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keyword">auto</span> step() const -> point_t const& { <span class="keywordflow">return</span> y_pos_.step(); }</div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keyword">auto</span> deref_fn() const -> deref_fn_t const& { <span class="keywordflow">return</span> y_pos_.deref_fn(); }</div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span> </div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span> <span class="keyword">private</span>:</div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> D, <span class="keywordtype">bool</span> TR></div><div class="line"><a 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 name="l00132"></a><span class="lineno"> 132</span> </div><div class="line"><a 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 name="l00134"></a><span class="lineno"> 134</span> };</div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span> </div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="comment">// PixelBasedConcept</span></div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span> <span class="comment"></span></div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span> <span class="keyword">template</span> <<span class="keyword">typename</span> D, <span class="keywordtype">bool</span> TR></div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span> <span class="keyword">struct </span>channel_type<virtual_2d_locator<D, TR>></div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  : channel_type<typename virtual_2d_locator<D, TR>::parent_t></div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span> {</div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span> };</div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span> </div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span> <span class="keyword">template</span> <<span class="keyword">typename</span> D, <span class="keywordtype">bool</span> TR></div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span> <span class="keyword">struct </span>color_space_type<virtual_2d_locator<D, TR>></div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  : color_space_type<typename virtual_2d_locator<D, TR>::parent_t></div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span> {</div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span> };</div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span> </div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span> <span class="keyword">template</span> <<span class="keyword">typename</span> D, <span class="keywordtype">bool</span> TR></div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span> <span class="keyword">struct </span>channel_mapping_type<virtual_2d_locator<D, TR>></div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  : channel_mapping_type<typename virtual_2d_locator<D, TR>::parent_t></div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span> {</div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span> };</div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span> </div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span> <span class="keyword">template</span> <<span class="keyword">typename</span> D, <span class="keywordtype">bool</span> TR></div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span> <span class="keyword">struct </span>is_planar<virtual_2d_locator<D, TR>></div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  : is_planar<typename virtual_2d_locator<D, TR>::parent_t></div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span> {</div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span> };</div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span> </div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span> <span class="comment">// HasDynamicXStepTypeConcept</span></div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span> <span class="comment"></span></div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span> <span class="keyword">template</span> <<span class="keyword">typename</span> D, <span class="keywordtype">bool</span> TR></div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span> <span class="keyword">struct </span>dynamic_x_step_type<virtual_2d_locator<D,TR>></div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span> {</div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="keyword">using</span> type = virtual_2d_locator<D,TR>;</div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span> };</div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span> </div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span> <span class="comment">// HasDynamicYStepTypeConcept</span></div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span> <span class="comment"></span></div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span> <span class="keyword">template</span> <<span class="keyword">typename</span> D, <span class="keywordtype">bool</span> TR></div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span> <span class="keyword">struct </span>dynamic_y_step_type<virtual_2d_locator<D,TR>></div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span> {</div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="keyword">using</span> type = virtual_2d_locator<D,TR>;</div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span> };</div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span> </div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span> <span class="comment">// HasTransposedTypeConcept</span></div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span> <span class="comment"></span></div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span> <span class="keyword">template</span> <<span class="keyword">typename</span> D, <span class="keywordtype">bool</span> IsTransposed></div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span> <span class="keyword">struct </span>transposed_type<virtual_2d_locator<D,IsTransposed>></div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span> {</div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="keyword">using</span> type = virtual_2d_locator<D,1-IsTransposed>;</div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span> };</div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span> </div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span> }} <span class="comment">// namespace boost::gil</span></div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span> </div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span> <span class="preprocessor">#endif</span></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,...</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 &it2, x_coord_t) const -> 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="classboost_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="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="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>
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