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<div class="title">image_view.hpp</div> </div>
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<div class="contents">
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">//</span></div>
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<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// Copyright 2005-2007 Adobe Systems Incorporated</span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">//</span></div>
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<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>
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<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>
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<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>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">//</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor">#ifndef BOOST_GIL_IMAGE_VIEW_HPP</span></div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor"></span><span class="preprocessor">#define BOOST_GIL_IMAGE_VIEW_HPP</span></div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor"></span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include <boost/gil/iterator_from_2d.hpp></span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> </div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include <cstddef></span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include <iterator></span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="keyword">namespace </span>boost { <span class="keyword">namespace </span>gil {</div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> </div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="keyword">template</span> <<span class="keyword">typename</span> Loc> <span class="comment">// Models 2D Pixel Locator</span></div>
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<div class="line"><a name="l00050"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1image__view.html"> 50</a></span> <span class="keyword">class </span><a class="code" href="classboost_1_1gil_1_1image__view.html">image_view</a> {</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> </div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="comment">// typedefs required by ConstRandomAccessNDImageViewConcept</span></div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keyword">static</span> <span class="keyword">const</span> std::size_t num_dimensions=2;</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> Loc::value_type value_type;</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> Loc::reference reference; <span class="comment">// result of dereferencing</span></div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> Loc::coord_t coord_t; <span class="comment">// 1D difference type (same for all dimensions)</span></div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keyword">typedef</span> coord_t difference_type; <span class="comment">// result of operator-(1d_iterator,1d_iterator)</span></div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> Loc::point_t point_t;</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keyword">typedef</span> Loc locator;</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keyword">typedef</span> <a class="code" href="classboost_1_1gil_1_1image__view.html">image_view<typename Loc::const_t></a> <a class="code" href="classboost_1_1gil_1_1image__view.html">const_t</a>; <span class="comment">// same as this type, but over const values</span></div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keyword">template</span> <std::<span class="keywordtype">size_t</span> D> <span class="keyword">struct </span>axis {</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> Loc::template axis<D>::coord_t coord_t; <span class="comment">// difference_type along each dimension</span></div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> Loc::template axis<D>::iterator <a class="code" href="classboost_1_1gil_1_1iterator__from__2d.html">iterator</a>; <span class="comment">// 1D iterator type along each dimension</span></div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  };</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keyword">typedef</span> <a class="code" href="classboost_1_1gil_1_1iterator__from__2d.html">iterator_from_2d<Loc></a> <a class="code" href="classboost_1_1gil_1_1iterator__from__2d.html">iterator</a>; <span class="comment">// 1D iterator type for each pixel left-to-right inside top-to-bottom</span></div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> <a class="code" href="classboost_1_1gil_1_1iterator__from__2d.html">const_t::iterator</a> <a class="code" href="classboost_1_1gil_1_1iterator__from__2d.html">const_iterator</a>; <span class="comment">// may be used to examine, but not to modify values</span></div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> const_t::reference const_reference; <span class="comment">// behaves as a const reference</span></div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> std::iterator_traits<iterator>::pointer pointer; <span class="comment">// behaves as a pointer to the value type</span></div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keyword">typedef</span> std::reverse_iterator<iterator> reverse_iterator;</div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keyword">typedef</span> std::size_t size_type;</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> </div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="comment">// typedefs required by ConstRandomAccess2DImageViewConcept</span></div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keyword">typedef</span> locator xy_locator;</div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> xy_locator::x_iterator x_iterator; <span class="comment">// pixel iterator along a row</span></div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> xy_locator::y_iterator y_iterator; <span class="comment">// pixel iterator along a column</span></div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> xy_locator::x_coord_t x_coord_t;</div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> xy_locator::y_coord_t y_coord_t;</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> </div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> Deref> <span class="keyword">struct </span>add_deref {</div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keyword">typedef</span> <a class="code" href="classboost_1_1gil_1_1image__view.html">image_view<typename Loc::template add_deref<Deref>::type</a>> type;</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keyword">static</span> type make(<span class="keyword">const</span> <a class="code" href="classboost_1_1gil_1_1image__view.html">image_view<Loc></a>& iv, <span class="keyword">const</span> Deref& d) { <span class="keywordflow">return</span> type(iv.dimensions(), Loc::template add_deref<Deref>::make(iv.pixels(),d)); }</div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  };</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> </div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <a class="code" href="classboost_1_1gil_1_1image__view.html">image_view</a>() : _dimensions(0,0) {}</div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> View> <a class="code" href="classboost_1_1gil_1_1image__view.html">image_view</a>(<span class="keyword">const</span> View& iv) : _dimensions(iv.dimensions()), _pixels(iv.pixels()) {}</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> </div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> L2> <a class="code" href="classboost_1_1gil_1_1image__view.html">image_view</a>(<span class="keyword">const</span> point_t& sz , <span class="keyword">const</span> L2& loc) : _dimensions(sz), _pixels(loc) {}</div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> L2> <a class="code" href="classboost_1_1gil_1_1image__view.html">image_view</a>(coord_t width, coord_t height, <span class="keyword">const</span> L2& loc) : _dimensions(x_coord_t(width),y_coord_t(height)), _pixels(loc) {}</div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> </div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> View> <a class="code" href="classboost_1_1gil_1_1image__view.html">image_view</a>& operator=(<span class="keyword">const</span> View& iv) { _pixels=iv.pixels(); _dimensions=iv.dimensions(); <span class="keywordflow">return</span> *<span class="keyword">this</span>; }</div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <a class="code" href="classboost_1_1gil_1_1image__view.html">image_view</a>& operator=(<span class="keyword">const</span> <a class="code" href="classboost_1_1gil_1_1image__view.html">image_view</a>& iv) { _pixels=iv.pixels(); _dimensions=iv.dimensions(); <span class="keywordflow">return</span> *<span class="keyword">this</span>; }</div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> </div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> View> <span class="keywordtype">bool</span> operator==(<span class="keyword">const</span> View& v)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> pixels()==v.pixels() && dimensions()==v.dimensions(); }</div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> View> <span class="keywordtype">bool</span> operator!=(<span class="keyword">const</span> View& v)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> !(*<span class="keyword">this</span>==v); }</div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> </div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> L2> <span class="keyword">friend</span> <span class="keywordtype">void</span> swap(<a class="code" href="classboost_1_1gil_1_1image__view.html">image_view<L2></a>& x, <a class="code" href="classboost_1_1gil_1_1image__view.html">image_view<L2></a>& y);</div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> </div>
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<div class="line"><a name="l00104"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1image__view.html#a6abdcb0b8cadeb8f39806bd6413a2075"> 104</a></span>  <span class="keywordtype">void</span> <a class="code" href="classboost_1_1gil_1_1image__view.html#a6abdcb0b8cadeb8f39806bd6413a2075">swap</a>(<a class="code" href="classboost_1_1gil_1_1image__view.html">image_view<Loc></a>& other)</div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  {</div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keyword">using</span> <a class="code" href="group___packed_channel_reference_model.html#gaa0bd7927a859ab0e44df1df898b68e7c">boost::gil::swap</a>;</div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  swap(*<span class="keyword">this</span>, other);</div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  }</div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> </div>
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<div class="line"><a name="l00114"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1image__view.html#ac6e61de369e994009e36f344f99c15ad"> 114</a></span>  <span class="keywordtype">bool</span> <a class="code" href="classboost_1_1gil_1_1image__view.html#ac6e61de369e994009e36f344f99c15ad">empty</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> !(width() > 0 && height() > 0); }</div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> </div>
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<div class="line"><a name="l00120"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1image__view.html#a6f29c8a7f499b266d4cf7a3dfd75b940"> 120</a></span>  reference <a class="code" href="classboost_1_1gil_1_1image__view.html#a6f29c8a7f499b266d4cf7a3dfd75b940">front</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> *begin(); }</div>
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> </div>
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<div class="line"><a name="l00126"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1image__view.html#a6c48c6a68d087259caa53b9ffae2a4f0"> 126</a></span>  reference <a class="code" href="classboost_1_1gil_1_1image__view.html#a6c48c6a68d087259caa53b9ffae2a4f0">back</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> *rbegin(); }</div>
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<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> </div>
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<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keyword">const</span> <a class="code" href="classboost_1_1gil_1_1point.html">point_t</a>& dimensions()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> _dimensions; }</div>
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<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="keyword">const</span> locator& pixels()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> _pixels; }</div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  x_coord_t width()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> dimensions().x; }</div>
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<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  y_coord_t height()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> dimensions().y; }</div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  std::size_t num_channels()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> gil::num_channels<value_type>::value; }</div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="keywordtype">bool</span> is_1d_traversable()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> _pixels.is_1d_traversable(width()); }</div>
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<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> </div>
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<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="comment">//\{@</span></div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="comment"></span> size_type size()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> width()*height(); }</div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  iterator begin()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> iterator(_pixels,_dimensions.x); }</div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  iterator end()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> begin()+(difference_type)size(); } <span class="comment">// potential performance problem!</span></div>
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<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  reverse_iterator rbegin()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> reverse_iterator(end()); }</div>
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<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  reverse_iterator rend()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> reverse_iterator(begin()); }</div>
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<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  reference operator[](difference_type i)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> begin()[i]; } <span class="comment">// potential performance problem!</span></div>
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<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  iterator at(difference_type i)<span class="keyword">const </span>{ <span class="keywordflow">return</span> begin()+i; }</div>
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<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  iterator at(<span class="keyword">const</span> point_t& p)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> begin()+p.y*width()+p.x; }</div>
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<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  iterator at(x_coord_t x, y_coord_t y)<span class="keyword">const </span>{ <span class="keywordflow">return</span> begin()+y*width()+x; }</div>
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<div class="line"><a name="l00146"></a><span class="lineno"> 146</span> </div>
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<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="comment">//\}@</span></div>
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<div class="line"><a name="l00148"></a><span class="lineno"> 148</span> </div>
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<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="comment">//\{@</span></div>
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<div class="line"><a name="l00151"></a><span class="lineno"> 151</span> <span class="comment"></span> reference operator()(<span class="keyword">const</span> point_t& p)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> _pixels(p.x,p.y); }</div>
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<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  reference operator()(x_coord_t x, y_coord_t y)<span class="keyword">const </span>{ <span class="keywordflow">return</span> _pixels(x,y); }</div>
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<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <span class="keyword">template</span> <std::<span class="keywordtype">size_t</span> D> <span class="keyword">typename</span> axis<D>::iterator axis_iterator(<span class="keyword">const</span> point_t& p)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> _pixels.template axis_iterator<D>(p); }</div>
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<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  xy_locator xy_at(x_coord_t x, y_coord_t y)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> _pixels+point_t(x_coord_t(x),y_coord_t(y)); }</div>
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<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  locator xy_at(<span class="keyword">const</span> point_t& p)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> _pixels+p; }</div>
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<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="comment">//\}@</span></div>
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<div class="line"><a name="l00157"></a><span class="lineno"> 157</span> </div>
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<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="comment">//\{@</span></div>
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<div class="line"><a name="l00160"></a><span class="lineno"> 160</span> <span class="comment"></span> x_iterator x_at(x_coord_t x, y_coord_t y)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> _pixels.x_at(x,y); }</div>
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<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  x_iterator x_at(<span class="keyword">const</span> point_t& p)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> _pixels.x_at(p); }</div>
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<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  x_iterator row_begin(y_coord_t y)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> x_at(0,y); }</div>
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<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  x_iterator row_end(y_coord_t y)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> x_at(width(),y); }</div>
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<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="comment">//\}@</span></div>
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<div class="line"><a name="l00165"></a><span class="lineno"> 165</span> </div>
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<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="comment">//\{@</span></div>
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<div class="line"><a name="l00168"></a><span class="lineno"> 168</span> <span class="comment"></span> y_iterator y_at(x_coord_t x, y_coord_t y)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> xy_at(x,y).y(); }</div>
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<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  y_iterator y_at(<span class="keyword">const</span> point_t& p)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> xy_at(p).y(); }</div>
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<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  y_iterator col_begin(x_coord_t x)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> y_at(x,0); }</div>
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<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  y_iterator col_end(x_coord_t x)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> y_at(x,height()); }</div>
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<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <span class="comment">//\}@</span></div>
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<div class="line"><a name="l00173"></a><span class="lineno"> 173</span> </div>
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<div class="line"><a name="l00174"></a><span class="lineno"> 174</span> <span class="keyword">private</span>:</div>
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<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> L2> <span class="keyword">friend</span> <span class="keyword">class </span>image_view;</div>
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<div class="line"><a name="l00176"></a><span class="lineno"> 176</span> </div>
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<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  point_t _dimensions;</div>
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<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  xy_locator _pixels;</div>
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<div class="line"><a name="l00179"></a><span class="lineno"> 179</span> };</div>
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<div class="line"><a name="l00180"></a><span class="lineno"> 180</span> </div>
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<div class="line"><a name="l00181"></a><span class="lineno"> 181</span> <span class="keyword">template</span> <<span class="keyword">typename</span> L2></div>
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<div class="line"><a name="l00182"></a><span class="lineno"> 182</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="group___packed_channel_reference_model.html#gaa0bd7927a859ab0e44df1df898b68e7c">swap</a>(image_view<L2>& x, image_view<L2>& y) {</div>
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<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <span class="keyword">using</span> <a class="code" href="group___packed_channel_reference_model.html#gaa0bd7927a859ab0e44df1df898b68e7c">std::swap</a>;</div>
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<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <a class="code" href="group___packed_channel_reference_model.html#gaa0bd7927a859ab0e44df1df898b68e7c">swap</a>(x._dimensions,y._dimensions);</div>
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<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  <a class="code" href="group___packed_channel_reference_model.html#gaa0bd7927a859ab0e44df1df898b68e7c">swap</a>(x._pixels, y._pixels); <span class="comment">// TODO: Extend further</span></div>
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<div class="line"><a name="l00186"></a><span class="lineno"> 186</span> }</div>
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<div class="line"><a name="l00187"></a><span class="lineno"> 187</span> </div>
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<div class="line"><a name="l00189"></a><span class="lineno"> 189</span> <span class="comment">// PixelBasedConcept</span></div>
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<div class="line"><a name="l00191"></a><span class="lineno"> 191</span> <span class="comment"></span></div>
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<div class="line"><a name="l00192"></a><span class="lineno"> 192</span> <span class="keyword">template</span> <<span class="keyword">typename</span> L></div>
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<div class="line"><a name="l00193"></a><span class="lineno"> 193</span> <span class="keyword">struct </span>channel_type<image_view<L> > : <span class="keyword">public</span> channel_type<L> {};</div>
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<div class="line"><a name="l00194"></a><span class="lineno"> 194</span> </div>
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<div class="line"><a name="l00195"></a><span class="lineno"> 195</span> <span class="keyword">template</span> <<span class="keyword">typename</span> L></div>
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<div class="line"><a name="l00196"></a><span class="lineno"> 196</span> <span class="keyword">struct </span>color_space_type<image_view<L> > : <span class="keyword">public</span> color_space_type<L> {};</div>
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<div class="line"><a name="l00197"></a><span class="lineno"> 197</span> </div>
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<div class="line"><a name="l00198"></a><span class="lineno"> 198</span> <span class="keyword">template</span> <<span class="keyword">typename</span> L></div>
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<div class="line"><a name="l00199"></a><span class="lineno"> 199</span> <span class="keyword">struct </span>channel_mapping_type<image_view<L> > : <span class="keyword">public</span> channel_mapping_type<L> {};</div>
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<div class="line"><a name="l00200"></a><span class="lineno"> 200</span> </div>
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<div class="line"><a name="l00201"></a><span class="lineno"> 201</span> <span class="keyword">template</span> <<span class="keyword">typename</span> L></div>
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<div class="line"><a name="l00202"></a><span class="lineno"> 202</span> <span class="keyword">struct </span>is_planar<image_view<L> > : <span class="keyword">public</span> is_planar<L> {};</div>
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<div class="line"><a name="l00203"></a><span class="lineno"> 203</span> </div>
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<div class="line"><a name="l00205"></a><span class="lineno"> 205</span> <span class="comment">// HasDynamicXStepTypeConcept</span></div>
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<div class="line"><a name="l00207"></a><span class="lineno"> 207</span> <span class="comment"></span></div>
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<div class="line"><a name="l00208"></a><span class="lineno"> 208</span> <span class="keyword">template</span> <<span class="keyword">typename</span> L></div>
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<div class="line"><a name="l00209"></a><span class="lineno"> 209</span> <span class="keyword">struct </span>dynamic_x_step_type<image_view<L> > {</div>
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<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <span class="keyword">typedef</span> image_view<typename dynamic_x_step_type<L>::type> type;</div>
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<div class="line"><a name="l00211"></a><span class="lineno"> 211</span> };</div>
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<div class="line"><a name="l00212"></a><span class="lineno"> 212</span> </div>
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<div class="line"><a name="l00214"></a><span class="lineno"> 214</span> <span class="comment">// HasDynamicYStepTypeConcept</span></div>
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<div class="line"><a name="l00216"></a><span class="lineno"> 216</span> <span class="comment"></span></div>
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<div class="line"><a name="l00217"></a><span class="lineno"> 217</span> <span class="keyword">template</span> <<span class="keyword">typename</span> L></div>
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<div class="line"><a name="l00218"></a><span class="lineno"> 218</span> <span class="keyword">struct </span>dynamic_y_step_type<image_view<L> > {</div>
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<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <span class="keyword">typedef</span> image_view<typename dynamic_y_step_type<L>::type> type;</div>
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<div class="line"><a name="l00220"></a><span class="lineno"> 220</span> };</div>
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<div class="line"><a name="l00221"></a><span class="lineno"> 221</span> </div>
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<div class="line"><a name="l00223"></a><span class="lineno"> 223</span> <span class="comment">// HasTransposedTypeConcept</span></div>
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<div class="line"><a name="l00225"></a><span class="lineno"> 225</span> <span class="comment"></span></div>
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<div class="line"><a name="l00226"></a><span class="lineno"> 226</span> <span class="keyword">template</span> <<span class="keyword">typename</span> L></div>
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<div class="line"><a name="l00227"></a><span class="lineno"> 227</span> <span class="keyword">struct </span>transposed_type<image_view<L> > {</div>
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<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  <span class="keyword">typedef</span> image_view<typename transposed_type<L>::type> type;</div>
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<div class="line"><a name="l00229"></a><span class="lineno"> 229</span> };</div>
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<div class="line"><a name="l00230"></a><span class="lineno"> 230</span> </div>
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<div class="line"><a name="l00231"></a><span class="lineno"> 231</span> }} <span class="comment">// namespace boost::gil</span></div>
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<div class="line"><a name="l00232"></a><span class="lineno"> 232</span> </div>
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<div class="line"><a name="l00233"></a><span class="lineno"> 233</span> <span class="preprocessor">#endif</span></div>
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<div class="ttc" id="classboost_1_1gil_1_1image__view_html"><div class="ttname"><a href="classboost_1_1gil_1_1image__view.html">boost::gil::image_view</a></div><div class="ttdoc">A lightweight object that interprets memory as a 2D array of pixels. Models ImageViewConcept,PixelBasedConcept,HasDynamicXStepTypeConcept,HasDynamicYStepTypeConcept,HasTransposedTypeConcept. </div><div class="ttdef"><b>Definition:</b> image_view.hpp:50</div></div>
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<div class="ttc" id="classboost_1_1gil_1_1image__view_html_a6c48c6a68d087259caa53b9ffae2a4f0"><div class="ttname"><a href="classboost_1_1gil_1_1image__view.html#a6c48c6a68d087259caa53b9ffae2a4f0">boost::gil::image_view::back</a></div><div class="ttdeci">reference back() const </div><div class="ttdoc">Returns a reference to the last element in raster order. </div><div class="ttdef"><b>Definition:</b> image_view.hpp:126</div></div>
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<div class="ttc" id="group___packed_channel_reference_model_html_gaa0bd7927a859ab0e44df1df898b68e7c"><div class="ttname"><a href="group___packed_channel_reference_model.html#gaa0bd7927a859ab0e44df1df898b68e7c">std::swap</a></div><div class="ttdeci">void swap(const boost::gil::packed_channel_reference< BF, FB, NB, M > x, R &y)</div><div class="ttdoc">swap for packed_channel_reference </div><div class="ttdef"><b>Definition:</b> channel.hpp:480</div></div>
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<div class="ttc" id="classboost_1_1gil_1_1image__view_html_ac6e61de369e994009e36f344f99c15ad"><div class="ttname"><a href="classboost_1_1gil_1_1image__view.html#ac6e61de369e994009e36f344f99c15ad">boost::gil::image_view::empty</a></div><div class="ttdeci">bool empty() const </div><div class="ttdoc">Returns true if the view has no elements, false otherwise. </div><div class="ttdef"><b>Definition:</b> image_view.hpp:114</div></div>
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<div class="ttc" id="classboost_1_1gil_1_1iterator__from__2d_html"><div class="ttname"><a href="classboost_1_1gil_1_1iterator__from__2d.html">boost::gil::iterator_from_2d</a></div><div class="ttdoc">Provides 1D random-access navigation to the pixels of the image. Models: PixelIteratorConcept, PixelBasedConcept, HasDynamicXStepTypeConcept. </div><div class="ttdef"><b>Definition:</b> iterator_from_2d.hpp:43</div></div>
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<div class="ttc" id="classboost_1_1gil_1_1image__view_html_a6abdcb0b8cadeb8f39806bd6413a2075"><div class="ttname"><a href="classboost_1_1gil_1_1image__view.html#a6abdcb0b8cadeb8f39806bd6413a2075">boost::gil::image_view::swap</a></div><div class="ttdeci">void swap(image_view< Loc > &other)</div><div class="ttdoc">Exchanges the elements of the current view with those of other in constant time. </div><div class="ttdef"><b>Definition:</b> image_view.hpp:104</div></div>
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<div class="ttc" id="classboost_1_1gil_1_1image__view_html_a6f29c8a7f499b266d4cf7a3dfd75b940"><div class="ttname"><a href="classboost_1_1gil_1_1image__view.html#a6f29c8a7f499b266d4cf7a3dfd75b940">boost::gil::image_view::front</a></div><div class="ttdeci">reference front() const </div><div class="ttdoc">Returns a reference to the first element in raster order. </div><div class="ttdef"><b>Definition:</b> image_view.hpp:120</div></div>
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<div class="ttc" id="classboost_1_1gil_1_1point_html"><div class="ttname"><a href="classboost_1_1gil_1_1point.html">boost::gil::point< std::ptrdiff_t ></a></div></div>
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