ceph/src/boost/libs/gil/doc/html/g_i_l_0236.html

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  41 <h1>locator.hpp</h1><a href="locator_8hpp.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
  42 <a name="l00002"></a>00002 <span class="comment">    Copyright 2005-2007 Adobe Systems Incorporated</span>
  43 <a name="l00003"></a>00003 <span class="comment">   </span>
  44 <a name="l00004"></a>00004 <span class="comment">    Use, modification and distribution are subject to the Boost Software License,</span>
  45 <a name="l00005"></a>00005 <span class="comment">    Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at</span>
  46 <a name="l00006"></a>00006 <span class="comment">    http://www.boost.org/LICENSE_1_0.txt).</span>
  47 <a name="l00007"></a>00007 <span class="comment"></span>
  48 <a name="l00008"></a>00008 <span class="comment">    See http://opensource.adobe.com/gil for most recent version including documentation.</span>
  49 <a name="l00009"></a>00009 <span class="comment">*/</span>
  50 <a name="l00010"></a>00010
  51 <a name="l00011"></a>00011 <span class="comment">/*************************************************************************************************/</span>
  52 <a name="l00012"></a>00012
  53 <a name="l00013"></a>00013 <span class="preprocessor">#ifndef GIL_LOCATOR_H</span>
  54 <a name="l00014"></a>00014 <span class="preprocessor"></span><span class="preprocessor">#define GIL_LOCATOR_H</span>
  55 <a name="l00015"></a>00015 <span class="preprocessor"></span>
  56 <a name="l00016"></a>00016
  57 <a name="l00025"></a>00025
  58 <a name="l00026"></a>00026 <span class="preprocessor">#include &lt;cstddef&gt;</span>
  59 <a name="l00027"></a>00027 <span class="preprocessor">#include &lt;cassert&gt;</span>
  60 <a name="l00028"></a>00028 <span class="preprocessor">#include "<a class="code" href="g_i_l_0243.html" title="pixel iterator support">pixel_iterator.hpp</a>"</span>
  61 <a name="l00029"></a>00029
  62 <a name="l00033"></a>00033
  63 <a name="l00034"></a>00034
  64 <a name="l00035"></a>00035 <span class="keyword">namespace </span>boost { <span class="keyword">namespace </span>gil {
  65 <a name="l00036"></a>00036
  66 <a name="l00037"></a>00037 <span class="comment">//forward declarations</span>
  67 <a name="l00038"></a>00038 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> P&gt; ptrdiff_t memunit_step(<span class="keyword">const</span> P*);
  68 <a name="l00039"></a>00039 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> P&gt; P* memunit_advanced(<span class="keyword">const</span> P* p, ptrdiff_t diff);
  69 <a name="l00040"></a>00040 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> P&gt; P&amp; memunit_advanced_ref(P* p, ptrdiff_t diff);
  70 <a name="l00041"></a>00041 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator, <span class="keyword">typename</span> D&gt; <span class="keyword">struct </span>iterator_add_deref;
  71 <a name="l00042"></a>00042 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt; <span class="keyword">class </span>point2;
  72 <a name="l00043"></a>00043 <span class="keyword">namespace </span>detail {
  73 <a name="l00044"></a>00044     <span class="comment">// helper class specialized for each axis of pixel_2d_locator</span>
  74 <a name="l00045"></a>00045     <span class="keyword">template</span> &lt;std::<span class="keywordtype">size_t</span> D, <span class="keyword">typename</span> Loc&gt;  <span class="keyword">class </span>locator_axis;
  75 <a name="l00046"></a>00046 }
  76 <a name="l00047"></a>00047 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt; <span class="keyword">struct </span>dynamic_x_step_type;
  77 <a name="l00048"></a>00048 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt; <span class="keyword">struct </span>dynamic_y_step_type;
  78 <a name="l00049"></a>00049
  79 <a name="l00050"></a>00050 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt; <span class="keyword">struct </span>channel_type;
  80 <a name="l00051"></a>00051 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt; <span class="keyword">struct </span>color_space_type;
  81 <a name="l00052"></a>00052 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt; <span class="keyword">struct </span>channel_mapping_type;
  82 <a name="l00053"></a>00053 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt; <span class="keyword">struct </span>is_planar;
  83 <a name="l00054"></a>00054 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt; <span class="keyword">struct </span>num_channels;
  84 <a name="l00055"></a>00055
  85 <a name="l00056"></a>00056 <span class="comment">// The type of a locator or a view that has X and Y swapped. By default it is the same</span>
  86 <a name="l00057"></a>00057 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt; <span class="keyword">struct </span>transposed_type {
  87 <a name="l00058"></a>00058     <span class="keyword">typedef</span> T type;
  88 <a name="l00059"></a>00059 };
  89 <a name="l00060"></a>00060
  90 <a name="l00119"></a>00119
  91 <a name="l00120"></a>00120 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Loc, <span class="keyword">typename</span> XIterator, <span class="keyword">typename</span> YIterator&gt;    <span class="comment">// The concrete subclass, the X-iterator and the Y-iterator</span>
  92 <a name="l00121"></a><a class="code" href="g_i_l_0058.html">00121</a> <span class="keyword">class </span><a class="code" href="g_i_l_0058.html" title="base class for models of PixelLocatorConceptPixel locator is similar to a pixel iterator...">pixel_2d_locator_base</a> {
  93 <a name="l00122"></a>00122 <span class="keyword">public</span>:
  94 <a name="l00123"></a>00123     <span class="keyword">typedef</span> XIterator           x_iterator;
  95 <a name="l00124"></a>00124     <span class="keyword">typedef</span> YIterator           y_iterator;
  96 <a name="l00125"></a>00125
  97 <a name="l00126"></a>00126     <span class="comment">// typedefs required by ConstRandomAccessNDLocatorConcept</span>
  98 <a name="l00127"></a>00127     <span class="keyword">static</span> <span class="keyword">const</span> std::size_t num_dimensions=2;
  99 <a name="l00128"></a>00128     <span class="keyword">typedef</span> <span class="keyword">typename</span> std::iterator_traits&lt;x_iterator&gt;::value_type       value_type;
 100 <a name="l00129"></a>00129     <span class="keyword">typedef</span> <span class="keyword">typename</span> std::iterator_traits&lt;x_iterator&gt;::reference        reference;    <span class="comment">// result of dereferencing</span>
 101 <a name="l00130"></a>00130     <span class="keyword">typedef</span> <span class="keyword">typename</span> std::iterator_traits&lt;x_iterator&gt;::difference_type  coord_t;      <span class="comment">// 1D difference type (same for all dimensions)</span>
 102 <a name="l00131"></a>00131     <span class="keyword">typedef</span> <a class="code" href="g_i_l_0060.html" title="2D point both axes of which have the same dimension typeModels: Point2DConcept">point2&lt;coord_t&gt;</a>                                             <a class="code" href="g_i_l_0060.html" title="2D point both axes of which have the same dimension typeModels: Point2DConcept">difference_type</a>; <span class="comment">// result of operator-(locator,locator)</span>
 103 <a name="l00132"></a>00132     <span class="keyword">typedef</span> <a class="code" href="g_i_l_0060.html" title="2D point both axes of which have the same dimension typeModels: Point2DConcept">difference_type</a>                                             <a class="code" href="g_i_l_0060.html" title="2D point both axes of which have the same dimension typeModels: Point2DConcept">point_t</a>;
 104 <a name="l00133"></a>00133     <span class="keyword">template</span> &lt;std::<span class="keywordtype">size_t</span> D&gt; <span class="keyword">struct </span>axis {
 105 <a name="l00134"></a>00134         <span class="keyword">typedef</span> <span class="keyword">typename</span> detail::locator_axis&lt;D,Loc&gt;::coord_t           coord_t;
 106 <a name="l00135"></a>00135         <span class="keyword">typedef</span> <span class="keyword">typename</span> detail::locator_axis&lt;D,Loc&gt;::iterator          iterator;
 107 <a name="l00136"></a>00136     };
 108 <a name="l00137"></a>00137
 109 <a name="l00138"></a>00138 <span class="comment">// typedefs required by ConstRandomAccess2DLocatorConcept</span>
 110 <a name="l00139"></a>00139     <span class="keyword">typedef</span> <span class="keyword">typename</span> point_t::template axis&lt;0&gt;::coord_t                 x_coord_t;
 111 <a name="l00140"></a>00140     <span class="keyword">typedef</span> <span class="keyword">typename</span> point_t::template axis&lt;1&gt;::coord_t                 y_coord_t;
 112 <a name="l00141"></a>00141
 113 <a name="l00142"></a>00142     <span class="keywordtype">bool</span>              operator!=(<span class="keyword">const</span> Loc&amp; p)<span class="keyword">          const </span>{ <span class="keywordflow">return</span> !(concrete()==p); }
 114 <a name="l00143"></a>00143
 115 <a name="l00144"></a>00144     x_iterator        x_at(x_coord_t dx, y_coord_t dy)<span class="keyword">  const </span>{ Loc tmp=concrete(); tmp+=<a class="code" href="g_i_l_0060.html" title="2D point both axes of which have the same dimension typeModels: Point2DConcept">point_t</a>(dx,dy); <span class="keywordflow">return</span> tmp.x(); }
 116 <a name="l00145"></a>00145     x_iterator        x_at(<span class="keyword">const</span> <a class="code" href="g_i_l_0060.html" title="2D point both axes of which have the same dimension typeModels: Point2DConcept">difference_type</a>&amp; d)<span class="keyword">    const </span>{ Loc tmp=concrete(); tmp+=d;              <span class="keywordflow">return</span> tmp.<a class="code" href="g_i_l_0060.html#9a4f74af87a76a4c3dcb729cb0e68f8d">x</a>(); }
 117 <a name="l00146"></a>00146     y_iterator        y_at(x_coord_t dx, y_coord_t dy)<span class="keyword">  const </span>{ Loc tmp=concrete(); tmp+=<a class="code" href="g_i_l_0060.html" title="2D point both axes of which have the same dimension typeModels: Point2DConcept">point_t</a>(dx,dy); <span class="keywordflow">return</span> tmp.y(); }
 118 <a name="l00147"></a>00147     y_iterator        y_at(<span class="keyword">const</span> <a class="code" href="g_i_l_0060.html" title="2D point both axes of which have the same dimension typeModels: Point2DConcept">difference_type</a>&amp; d)<span class="keyword">    const </span>{ Loc tmp=concrete(); tmp+=d;              <span class="keywordflow">return</span> tmp.<a class="code" href="g_i_l_0060.html#1cb2b5ea04251d543e49356ef54eb853">y</a>(); }
 119 <a name="l00148"></a>00148     Loc               xy_at(x_coord_t dx, y_coord_t dy)<span class="keyword"> const </span>{ Loc tmp=concrete(); tmp+=<a class="code" href="g_i_l_0060.html" title="2D point both axes of which have the same dimension typeModels: Point2DConcept">point_t</a>(dx,dy); <span class="keywordflow">return</span> tmp; }
 120 <a name="l00149"></a>00149     Loc               xy_at(<span class="keyword">const</span> <a class="code" href="g_i_l_0060.html" title="2D point both axes of which have the same dimension typeModels: Point2DConcept">difference_type</a>&amp; d)<span class="keyword">   const </span>{ Loc tmp=concrete(); tmp+=d;              <span class="keywordflow">return</span> tmp; }
 121 <a name="l00150"></a>00150
 122 <a name="l00151"></a>00151     <span class="keyword">template</span> &lt;std::<span class="keywordtype">size_t</span> D&gt; <span class="keyword">typename</span> axis&lt;D&gt;::iterator&amp;       axis_iterator()                       { <span class="keywordflow">return</span> detail::locator_axis&lt;D,Loc&gt;()(concrete()); }
 123 <a name="l00152"></a>00152     <span class="keyword">template</span> &lt;std::<span class="keywordtype">size_t</span> D&gt; <span class="keyword">typename</span> axis&lt;D&gt;::iterator <span class="keyword">const</span>&amp; axis_iterator()<span class="keyword">                 const </span>{ <span class="keywordflow">return</span> detail::locator_axis&lt;D,Loc&gt;()(concrete()); }
 124 <a name="l00153"></a>00153     <span class="keyword">template</span> &lt;std::<span class="keywordtype">size_t</span> D&gt; <span class="keyword">typename</span> axis&lt;D&gt;::iterator        axis_iterator(<span class="keyword">const</span> <a class="code" href="g_i_l_0060.html" title="2D point both axes of which have the same dimension typeModels: Point2DConcept">point_t</a>&amp; p)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> detail::locator_axis&lt;D,Loc&gt;()(concrete(),p); }
 125 <a name="l00154"></a>00154
 126 <a name="l00155"></a>00155     reference         operator()(x_coord_t dx, y_coord_t dy)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> *x_at(dx,dy); }
 127 <a name="l00156"></a>00156     reference         operator[](<span class="keyword">const</span> <a class="code" href="g_i_l_0060.html" title="2D point both axes of which have the same dimension typeModels: Point2DConcept">difference_type</a>&amp; d)<span class="keyword">   const </span>{ <span class="keywordflow">return</span> *x_at(d.<a class="code" href="g_i_l_0060.html#9a4f74af87a76a4c3dcb729cb0e68f8d">x</a>,d.<a class="code" href="g_i_l_0060.html#1cb2b5ea04251d543e49356ef54eb853">y</a>); }
 128 <a name="l00157"></a>00157
 129 <a name="l00158"></a>00158     reference         operator*()<span class="keyword">                            const </span>{ <span class="keywordflow">return</span> *concrete().x(); }
 130 <a name="l00159"></a>00159
 131 <a name="l00160"></a>00160     Loc&amp;              operator+=(<span class="keyword">const</span> <a class="code" href="g_i_l_0060.html" title="2D point both axes of which have the same dimension typeModels: Point2DConcept">difference_type</a>&amp; d)         { concrete().x()+=d.<a class="code" href="g_i_l_0060.html#9a4f74af87a76a4c3dcb729cb0e68f8d">x</a>; concrete().y()+=d.<a class="code" href="g_i_l_0060.html#1cb2b5ea04251d543e49356ef54eb853">y</a>; <span class="keywordflow">return</span> concrete(); }
 132 <a name="l00161"></a>00161     Loc&amp;              operator-=(<span class="keyword">const</span> <a class="code" href="g_i_l_0060.html" title="2D point both axes of which have the same dimension typeModels: Point2DConcept">difference_type</a>&amp; d)         { concrete().x()-=d.<a class="code" href="g_i_l_0060.html#9a4f74af87a76a4c3dcb729cb0e68f8d">x</a>; concrete().y()-=d.<a class="code" href="g_i_l_0060.html#1cb2b5ea04251d543e49356ef54eb853">y</a>; <span class="keywordflow">return</span> concrete(); }
 133 <a name="l00162"></a>00162
 134 <a name="l00163"></a>00163     Loc               operator+(<span class="keyword">const</span> <a class="code" href="g_i_l_0060.html" title="2D point both axes of which have the same dimension typeModels: Point2DConcept">difference_type</a>&amp; d)<span class="keyword">    const </span>{ <span class="keywordflow">return</span> xy_at(d); }
 135 <a name="l00164"></a>00164     Loc               operator-(<span class="keyword">const</span> <a class="code" href="g_i_l_0060.html" title="2D point both axes of which have the same dimension typeModels: Point2DConcept">difference_type</a>&amp; d)<span class="keyword">    const </span>{ <span class="keywordflow">return</span> xy_at(-d); }
 136 <a name="l00165"></a>00165
 137 <a name="l00166"></a>00166     <span class="comment">// Some locators can cache 2D coordinates for faster subsequent access. By default there is no caching</span>
 138 <a name="l00167"></a>00167     <span class="keyword">typedef</span> <a class="code" href="g_i_l_0060.html" title="2D point both axes of which have the same dimension typeModels: Point2DConcept">difference_type</a>    <a class="code" href="g_i_l_0060.html" title="2D point both axes of which have the same dimension typeModels: Point2DConcept">cached_location_t</a>;
 139 <a name="l00168"></a>00168     <a class="code" href="g_i_l_0060.html" title="2D point both axes of which have the same dimension typeModels: Point2DConcept">cached_location_t</a> cache_location(<span class="keyword">const</span> <a class="code" href="g_i_l_0060.html" title="2D point both axes of which have the same dimension typeModels: Point2DConcept">difference_type</a>&amp; d)<span class="keyword">  const </span>{ <span class="keywordflow">return</span> d; }
 140 <a name="l00169"></a>00169     <a class="code" href="g_i_l_0060.html" title="2D point both axes of which have the same dimension typeModels: Point2DConcept">cached_location_t</a> cache_location(x_coord_t dx, y_coord_t dy)<span class="keyword">const </span>{ <span class="keywordflow">return</span> <a class="code" href="g_i_l_0060.html" title="2D point both axes of which have the same dimension typeModels: Point2DConcept">difference_type</a>(dx,dy); }
 141 <a name="l00170"></a>00170
 142 <a name="l00171"></a>00171 <span class="keyword">private</span>:
 143 <a name="l00172"></a>00172     Loc&amp;              concrete()       { <span class="keywordflow">return</span> (Loc&amp;)*<span class="keyword">this</span>; }
 144 <a name="l00173"></a>00173     <span class="keyword">const</span> Loc&amp;        concrete()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> (<span class="keyword">const</span> Loc&amp;)*<span class="keyword">this</span>; }
 145 <a name="l00174"></a>00174
 146 <a name="l00175"></a>00175     <span class="keyword">template</span> &lt;<span class="keyword">typename</span> X&gt; <span class="keyword">friend</span> <span class="keyword">class </span>pixel_2d_locator;
 147 <a name="l00176"></a>00176 };
 148 <a name="l00177"></a>00177
 149 <a name="l00178"></a>00178 <span class="comment">// helper classes for each axis of pixel_2d_locator_base</span>
 150 <a name="l00179"></a>00179 <span class="keyword">namespace </span>detail {
 151 <a name="l00180"></a>00180     <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Loc&gt;
 152 <a name="l00181"></a>00181     <span class="keyword">class </span>locator_axis&lt;0,Loc&gt; {
 153 <a name="l00182"></a>00182         <span class="keyword">typedef</span> <span class="keyword">typename</span> Loc::point_t                       point_t;
 154 <a name="l00183"></a>00183     <span class="keyword">public</span>:
 155 <a name="l00184"></a>00184         <span class="keyword">typedef</span> <span class="keyword">typename</span> point_t::template axis&lt;0&gt;::coord_t coord_t;
 156 <a name="l00185"></a>00185         <span class="keyword">typedef</span> <span class="keyword">typename</span> Loc::x_iterator                    iterator;
 157 <a name="l00186"></a>00186
 158 <a name="l00187"></a>00187         <span class="keyword">inline</span> iterator&amp;        operator()(      Loc&amp; loc)<span class="keyword">                   const </span>{ <span class="keywordflow">return</span> loc.x(); }
 159 <a name="l00188"></a>00188         <span class="keyword">inline</span> iterator  <span class="keyword">const</span>&amp; operator()(<span class="keyword">const</span> Loc&amp; loc)<span class="keyword">                   const </span>{ <span class="keywordflow">return</span> loc.x(); }
 160 <a name="l00189"></a>00189         <span class="keyword">inline</span> iterator         operator()(      Loc&amp; loc, <span class="keyword">const</span> point_t&amp; d)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> loc.x_at(d); }
 161 <a name="l00190"></a>00190         <span class="keyword">inline</span> iterator         operator()(<span class="keyword">const</span> Loc&amp; loc, <span class="keyword">const</span> point_t&amp; d)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> loc.x_at(d); }
 162 <a name="l00191"></a>00191     };
 163 <a name="l00192"></a>00192
 164 <a name="l00193"></a>00193     <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Loc&gt;
 165 <a name="l00194"></a>00194     <span class="keyword">class </span>locator_axis&lt;1,Loc&gt; {
 166 <a name="l00195"></a>00195         <span class="keyword">typedef</span> <span class="keyword">typename</span> Loc::point_t                       point_t;
 167 <a name="l00196"></a>00196     <span class="keyword">public</span>:
 168 <a name="l00197"></a>00197         <span class="keyword">typedef</span> <span class="keyword">typename</span> point_t::template axis&lt;1&gt;::coord_t coord_t;
 169 <a name="l00198"></a>00198         <span class="keyword">typedef</span> <span class="keyword">typename</span> Loc::y_iterator                    iterator;
 170 <a name="l00199"></a>00199
 171 <a name="l00200"></a>00200         <span class="keyword">inline</span> iterator&amp;        operator()(      Loc&amp; loc)<span class="keyword">               const </span>{ <span class="keywordflow">return</span> loc.y(); }
 172 <a name="l00201"></a>00201         <span class="keyword">inline</span> iterator <span class="keyword">const</span>&amp;  operator()(<span class="keyword">const</span> Loc&amp; loc)<span class="keyword">               const </span>{ <span class="keywordflow">return</span> loc.y(); }
 173 <a name="l00202"></a>00202         <span class="keyword">inline</span> iterator     operator()(      Loc&amp; loc, <span class="keyword">const</span> point_t&amp; d)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> loc.y_at(d); }
 174 <a name="l00203"></a>00203         <span class="keyword">inline</span> iterator     operator()(<span class="keyword">const</span> Loc&amp; loc, <span class="keyword">const</span> point_t&amp; d)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> loc.y_at(d); }
 175 <a name="l00204"></a>00204     };
 176 <a name="l00205"></a>00205 }
 177 <a name="l00206"></a>00206
 178 <a name="l00207"></a>00207 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Loc, <span class="keyword">typename</span> XIt, <span class="keyword">typename</span> YIt&gt;
 179 <a name="l00208"></a>00208 <span class="keyword">struct </span>channel_type&lt;pixel_2d_locator_base&lt;Loc,XIt,YIt&gt; &gt; : <span class="keyword">public</span> channel_type&lt;XIt&gt; {};
 180 <a name="l00209"></a>00209
 181 <a name="l00210"></a>00210 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Loc, <span class="keyword">typename</span> XIt, <span class="keyword">typename</span> YIt&gt;
 182 <a name="l00211"></a>00211 <span class="keyword">struct </span>color_space_type&lt;pixel_2d_locator_base&lt;Loc,XIt,YIt&gt; &gt; : <span class="keyword">public</span> color_space_type&lt;XIt&gt; {};
 183 <a name="l00212"></a>00212
 184 <a name="l00213"></a>00213 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Loc, <span class="keyword">typename</span> XIt, <span class="keyword">typename</span> YIt&gt;
 185 <a name="l00214"></a>00214 <span class="keyword">struct </span>channel_mapping_type&lt;pixel_2d_locator_base&lt;Loc,XIt,YIt&gt; &gt; : <span class="keyword">public</span> channel_mapping_type&lt;XIt&gt; {};
 186 <a name="l00215"></a>00215
 187 <a name="l00216"></a>00216 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Loc, <span class="keyword">typename</span> XIt, <span class="keyword">typename</span> YIt&gt;
 188 <a name="l00217"></a>00217 <span class="keyword">struct </span>is_planar&lt;pixel_2d_locator_base&lt;Loc,XIt,YIt&gt; &gt; : <span class="keyword">public</span> is_planar&lt;XIt&gt; {};
 189 <a name="l00218"></a>00218
 190 <a name="l00239"></a>00239
 191 <a name="l00240"></a>00240 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> StepIterator&gt;
 192 <a name="l00241"></a><a class="code" href="g_i_l_0044.html">00241</a> <span class="keyword">class </span><a class="code" href="g_i_l_0044.html" title="Memory-based pixel locator. Models: PixelLocatorConcept,HasDynamicXStepTypeConcept...">memory_based_2d_locator</a> : <span class="keyword">public</span> <a class="code" href="g_i_l_0058.html" title="base class for models of PixelLocatorConceptPixel locator is similar to a pixel iterator...">pixel_2d_locator_base</a>&lt;memory_based_2d_locator&lt;StepIterator&gt;, typename iterator_adaptor_get_base&lt;StepIterator&gt;::type, StepIterator&gt; {
 193 <a name="l00242"></a>00242     <span class="keyword">typedef</span> <a class="code" href="g_i_l_0044.html" title="Memory-based pixel locator. Models: PixelLocatorConcept,HasDynamicXStepTypeConcept...">memory_based_2d_locator&lt;StepIterator&gt;</a>  <a class="code" href="g_i_l_0044.html" title="Memory-based pixel locator. Models: PixelLocatorConcept,HasDynamicXStepTypeConcept...">this_t</a>;
 194 <a name="l00243"></a>00243     GIL_CLASS_REQUIRE(StepIterator, boost::gil, <a class="code" href="g_i_l_0380.html" title="Step iterator concept.">StepIteratorConcept</a>)
 195 <a name="l00244"></a>00244 <span class="keyword">public</span>:
 196 <a name="l00245"></a>00245     <span class="keyword">typedef</span> <a class="code" href="g_i_l_0058.html" title="base class for models of PixelLocatorConceptPixel locator is similar to a pixel iterator...">pixel_2d_locator_base&lt;memory_based_2d_locator&lt;StepIterator&gt;</a>, <span class="keyword">typename</span> iterator_adaptor_get_base&lt;StepIterator&gt;::type, StepIterator&gt; <a class="code" href="g_i_l_0058.html" title="base class for models of PixelLocatorConceptPixel locator is similar to a pixel iterator...">parent_t</a>;
 197 <a name="l00246"></a>00246     <span class="keyword">typedef</span> <a class="code" href="g_i_l_0044.html" title="Memory-based pixel locator. Models: PixelLocatorConcept,HasDynamicXStepTypeConcept...">memory_based_2d_locator&lt;typename const_iterator_type&lt;StepIterator&gt;::type</a>&gt; <a class="code" href="g_i_l_0044.html" title="Memory-based pixel locator. Models: PixelLocatorConcept,HasDynamicXStepTypeConcept...">const_t</a>; <span class="comment">// same as this type, but over const values</span>
 198 <a name="l00247"></a>00247
 199 <a name="l00248"></a>00248     <span class="keyword">typedef</span> <span class="keyword">typename</span> parent_t::coord_t          coord_t;
 200 <a name="l00249"></a>00249     <span class="keyword">typedef</span> <span class="keyword">typename</span> parent_t::x_coord_t        x_coord_t;
 201 <a name="l00250"></a>00250     <span class="keyword">typedef</span> <span class="keyword">typename</span> parent_t::y_coord_t        y_coord_t;
 202 <a name="l00251"></a>00251     <span class="keyword">typedef</span> <span class="keyword">typename</span> parent_t::x_iterator       x_iterator;
 203 <a name="l00252"></a>00252     <span class="keyword">typedef</span> <span class="keyword">typename</span> parent_t::y_iterator       y_iterator;
 204 <a name="l00253"></a>00253     <span class="keyword">typedef</span> <span class="keyword">typename</span> <a class="code" href="g_i_l_0060.html" title="2D point both axes of which have the same dimension typeModels: Point2DConcept">parent_t::difference_type</a>  <a class="code" href="g_i_l_0060.html" title="2D point both axes of which have the same dimension typeModels: Point2DConcept">difference_type</a>;
 205 <a name="l00254"></a>00254     <span class="keyword">typedef</span> <span class="keyword">typename</span> parent_t::reference        reference;
 206 <a name="l00255"></a>00255
 207 <a name="l00256"></a>00256     <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Deref&gt; <span class="keyword">struct </span>add_deref {
 208 <a name="l00257"></a>00257         <span class="keyword">typedef</span> <a class="code" href="g_i_l_0044.html" title="Memory-based pixel locator. Models: PixelLocatorConcept,HasDynamicXStepTypeConcept...">memory_based_2d_locator&lt;typename iterator_add_deref&lt;StepIterator,Deref&gt;::type</a>&gt; type;
 209 <a name="l00258"></a>00258         <span class="keyword">static</span> type make(<span class="keyword">const</span> <a class="code" href="g_i_l_0044.html" title="Memory-based pixel locator. Models: PixelLocatorConcept,HasDynamicXStepTypeConcept...">memory_based_2d_locator&lt;StepIterator&gt;</a>&amp; loc, <span class="keyword">const</span> Deref&amp; nderef) {
 210 <a name="l00259"></a>00259             <span class="keywordflow">return</span> type(<a class="code" href="g_i_l_0546.html" title="Returns the type (and creates an instance) of an iterator that invokes the given...">iterator_add_deref&lt;StepIterator,Deref&gt;::make</a>(loc.<a class="code" href="g_i_l_0044.html#8d8247ad88b73c9bb3b5d7122064ec59">y</a>(),nderef));
 211 <a name="l00260"></a>00260         }
 212 <a name="l00261"></a>00261     };
 213 <a name="l00262"></a>00262
 214 <a name="l00263"></a>00263     <a class="code" href="g_i_l_0044.html" title="Memory-based pixel locator. Models: PixelLocatorConcept,HasDynamicXStepTypeConcept...">memory_based_2d_locator</a>() {}
 215 <a name="l00264"></a>00264     <a class="code" href="g_i_l_0044.html" title="Memory-based pixel locator. Models: PixelLocatorConcept,HasDynamicXStepTypeConcept...">memory_based_2d_locator</a>(<span class="keyword">const</span> StepIterator&amp; yit) : _p(yit) {}
 216 <a name="l00265"></a>00265     <span class="keyword">template</span> &lt;<span class="keyword">typename</span> SI&gt; <a class="code" href="g_i_l_0044.html" title="Memory-based pixel locator. Models: PixelLocatorConcept,HasDynamicXStepTypeConcept...">memory_based_2d_locator</a>(<span class="keyword">const</span> <a class="code" href="g_i_l_0044.html" title="Memory-based pixel locator. Models: PixelLocatorConcept,HasDynamicXStepTypeConcept...">memory_based_2d_locator&lt;SI&gt;</a>&amp; loc, coord_t y_step) : _p(loc.<a class="code" href="g_i_l_0044.html#1e86d37c383d7cbafbd4969321d07ae7">x</a>(), loc.<a class="code" href="g_i_l_0044.html#663951f31f647e1b19e58b7f3443c697">row_size</a>()*y_step) {}
 217 <a name="l00266"></a>00266     <span class="keyword">template</span> &lt;<span class="keyword">typename</span> SI&gt; <a class="code" href="g_i_l_0044.html" title="Memory-based pixel locator. Models: PixelLocatorConcept,HasDynamicXStepTypeConcept...">memory_based_2d_locator</a>(<span class="keyword">const</span> <a class="code" href="g_i_l_0044.html" title="Memory-based pixel locator. Models: PixelLocatorConcept,HasDynamicXStepTypeConcept...">memory_based_2d_locator&lt;SI&gt;</a>&amp; loc, coord_t x_step, coord_t y_step, <span class="keywordtype">bool</span> transpose=<span class="keyword">false</span>)
 218 <a name="l00267"></a>00267         : _p(make_step_iterator(loc.<a class="code" href="g_i_l_0044.html#1e86d37c383d7cbafbd4969321d07ae7">x</a>(),(transpose ? loc.<a class="code" href="g_i_l_0044.html#663951f31f647e1b19e58b7f3443c697">row_size</a>() : loc.<a class="code" href="g_i_l_0044.html#a3d224e4e4ff07d5b09c0d340c822e85">pixel_size</a>())*x_step),
 219 <a name="l00268"></a>00268                                         (transpose ? loc.<a class="code" href="g_i_l_0044.html#a3d224e4e4ff07d5b09c0d340c822e85">pixel_size</a>() : loc.<a class="code" href="g_i_l_0044.html#663951f31f647e1b19e58b7f3443c697">row_size</a>())*y_step ) {}
 220 <a name="l00269"></a>00269
 221 <a name="l00270"></a>00270     <a class="code" href="g_i_l_0044.html" title="Memory-based pixel locator. Models: PixelLocatorConcept,HasDynamicXStepTypeConcept...">memory_based_2d_locator</a>(x_iterator xit, std::ptrdiff_t row_bytes) : _p(xit,row_bytes) {}
 222 <a name="l00271"></a>00271     <span class="keyword">template</span> &lt;<span class="keyword">typename</span> X&gt; <a class="code" href="g_i_l_0044.html" title="Memory-based pixel locator. Models: PixelLocatorConcept,HasDynamicXStepTypeConcept...">memory_based_2d_locator</a>(<span class="keyword">const</span> <a class="code" href="g_i_l_0044.html" title="Memory-based pixel locator. Models: PixelLocatorConcept,HasDynamicXStepTypeConcept...">memory_based_2d_locator&lt;X&gt;</a>&amp; pl) : _p(pl.<a class="code" href="g_i_l_0044.html#63bfd1c98810e1b6194344ef389b1852">_p</a>) {}
 223 <a name="l00272"></a>00272     <a class="code" href="g_i_l_0044.html" title="Memory-based pixel locator. Models: PixelLocatorConcept,HasDynamicXStepTypeConcept...">memory_based_2d_locator</a>(<span class="keyword">const</span> <a class="code" href="g_i_l_0044.html" title="Memory-based pixel locator. Models: PixelLocatorConcept,HasDynamicXStepTypeConcept...">memory_based_2d_locator</a>&amp; pl) : _p(pl.<a class="code" href="g_i_l_0044.html#63bfd1c98810e1b6194344ef389b1852">_p</a>) {}
 224 <a name="l00273"></a>00273
 225 <a name="l00274"></a>00274     <span class="keywordtype">bool</span>                  operator==(<span class="keyword">const</span> <a class="code" href="g_i_l_0044.html" title="Memory-based pixel locator. Models: PixelLocatorConcept,HasDynamicXStepTypeConcept...">this_t</a>&amp; p)<span class="keyword">  const </span>{ <span class="keywordflow">return</span> _p==p.<a class="code" href="g_i_l_0044.html#63bfd1c98810e1b6194344ef389b1852">_p</a>; }
 226 <a name="l00275"></a>00275
 227 <a name="l00276"></a>00276     x_iterator <span class="keyword">const</span>&amp;     x()<span class="keyword">                          const </span>{ <span class="keywordflow">return</span> _p.base(); }
 228 <a name="l00277"></a>00277     y_iterator <span class="keyword">const</span>&amp;     y()<span class="keyword">                          const </span>{ <span class="keywordflow">return</span> _p; }
 229 <a name="l00278"></a>00278     x_iterator&amp;           x()                                { <span class="keywordflow">return</span> _p.base(); }
 230 <a name="l00279"></a>00279     y_iterator&amp;           y()                                { <span class="keywordflow">return</span> _p; }
 231 <a name="l00280"></a>00280
 232 <a name="l00281"></a>00281     <span class="comment">// These are faster versions of functions already provided in the superclass </span>
 233 <a name="l00282"></a>00282     x_iterator x_at      (x_coord_t dx, y_coord_t dy)<span class="keyword">  const </span>{ <span class="keywordflow">return</span> memunit_advanced(x(), offset(dx,dy)); }
 234 <a name="l00283"></a>00283     x_iterator x_at      (<span class="keyword">const</span> <a class="code" href="g_i_l_0060.html" title="2D point both axes of which have the same dimension typeModels: Point2DConcept">difference_type</a>&amp; d)<span class="keyword">    const </span>{ <span class="keywordflow">return</span> memunit_advanced(x(), offset(d.<a class="code" href="g_i_l_0060.html#9a4f74af87a76a4c3dcb729cb0e68f8d">x</a>,d.<a class="code" href="g_i_l_0060.html#1cb2b5ea04251d543e49356ef54eb853">y</a>)); }
 235 <a name="l00284"></a>00284     <a class="code" href="g_i_l_0044.html" title="Memory-based pixel locator. Models: PixelLocatorConcept,HasDynamicXStepTypeConcept...">this_t</a>     xy_at     (x_coord_t dx, y_coord_t dy)<span class="keyword">  const </span>{ <span class="keywordflow">return</span> <a class="code" href="g_i_l_0044.html" title="Memory-based pixel locator. Models: PixelLocatorConcept,HasDynamicXStepTypeConcept...">this_t</a>(x_at( dx , dy ), row_size()); }
 236 <a name="l00285"></a>00285     <a class="code" href="g_i_l_0044.html" title="Memory-based pixel locator. Models: PixelLocatorConcept,HasDynamicXStepTypeConcept...">this_t</a>     xy_at     (<span class="keyword">const</span> <a class="code" href="g_i_l_0060.html" title="2D point both axes of which have the same dimension typeModels: Point2DConcept">difference_type</a>&amp; d)<span class="keyword">    const </span>{ <span class="keywordflow">return</span> <a class="code" href="g_i_l_0044.html" title="Memory-based pixel locator. Models: PixelLocatorConcept,HasDynamicXStepTypeConcept...">this_t</a>(x_at( d.<a class="code" href="g_i_l_0060.html#9a4f74af87a76a4c3dcb729cb0e68f8d">x</a>, d.<a class="code" href="g_i_l_0060.html#1cb2b5ea04251d543e49356ef54eb853">y</a>), row_size()); }
 237 <a name="l00286"></a>00286     reference  operator()(x_coord_t dx, y_coord_t dy)<span class="keyword">  const </span>{ <span class="keywordflow">return</span> memunit_advanced_ref(x(),offset(dx,dy)); }
 238 <a name="l00287"></a>00287     reference  operator[](<span class="keyword">const</span> <a class="code" href="g_i_l_0060.html" title="2D point both axes of which have the same dimension typeModels: Point2DConcept">difference_type</a>&amp; d)<span class="keyword">    const </span>{ <span class="keywordflow">return</span> memunit_advanced_ref(x(),offset(d.<a class="code" href="g_i_l_0060.html#9a4f74af87a76a4c3dcb729cb0e68f8d">x</a>,d.<a class="code" href="g_i_l_0060.html#1cb2b5ea04251d543e49356ef54eb853">y</a>)); }
 239 <a name="l00288"></a>00288     <a class="code" href="g_i_l_0044.html" title="Memory-based pixel locator. Models: PixelLocatorConcept,HasDynamicXStepTypeConcept...">this_t</a>&amp;    operator+=(<span class="keyword">const</span> <a class="code" href="g_i_l_0060.html" title="2D point both axes of which have the same dimension typeModels: Point2DConcept">difference_type</a>&amp; d)          { memunit_advance(x(),offset(d.<a class="code" href="g_i_l_0060.html#9a4f74af87a76a4c3dcb729cb0e68f8d">x</a>,d.<a class="code" href="g_i_l_0060.html#1cb2b5ea04251d543e49356ef54eb853">y</a>)); <span class="keywordflow">return</span> *<span class="keyword">this</span>; }
 240 <a name="l00289"></a>00289     <a class="code" href="g_i_l_0044.html" title="Memory-based pixel locator. Models: PixelLocatorConcept,HasDynamicXStepTypeConcept...">this_t</a>&amp;    operator-=(<span class="keyword">const</span> <a class="code" href="g_i_l_0060.html" title="2D point both axes of which have the same dimension typeModels: Point2DConcept">difference_type</a>&amp; d)          { memunit_advance(x(),offset(-d.<a class="code" href="g_i_l_0060.html#9a4f74af87a76a4c3dcb729cb0e68f8d">x</a>,-d.<a class="code" href="g_i_l_0060.html#1cb2b5ea04251d543e49356ef54eb853">y</a>)); <span class="keywordflow">return</span> *<span class="keyword">this</span>; }
 241 <a name="l00290"></a>00290
 242 <a name="l00291"></a>00291     <span class="comment">// Memory-based locators can have 1D caching of 2D relative coordinates</span>
 243 <a name="l00292"></a>00292     <span class="keyword">typedef</span> std::ptrdiff_t <a class="code" href="g_i_l_0060.html" title="2D point both axes of which have the same dimension typeModels: Point2DConcept">cached_location_t</a>; <span class="comment">// type used to store relative location (to allow for more efficient repeated access)</span>
 244 <a name="l00293"></a>00293     <a class="code" href="g_i_l_0060.html" title="2D point both axes of which have the same dimension typeModels: Point2DConcept">cached_location_t</a> cache_location(<span class="keyword">const</span> <a class="code" href="g_i_l_0060.html" title="2D point both axes of which have the same dimension typeModels: Point2DConcept">difference_type</a>&amp; d)<span class="keyword">  const </span>{ <span class="keywordflow">return</span> offset(d.<a class="code" href="g_i_l_0060.html#9a4f74af87a76a4c3dcb729cb0e68f8d">x</a>,d.<a class="code" href="g_i_l_0060.html#1cb2b5ea04251d543e49356ef54eb853">y</a>); }
 245 <a name="l00294"></a>00294     <a class="code" href="g_i_l_0060.html" title="2D point both axes of which have the same dimension typeModels: Point2DConcept">cached_location_t</a> cache_location(x_coord_t dx, y_coord_t dy)<span class="keyword">const </span>{ <span class="keywordflow">return</span> offset(dx,dy); }
 246 <a name="l00295"></a>00295     reference         operator[](<span class="keyword">const</span> <a class="code" href="g_i_l_0060.html" title="2D point both axes of which have the same dimension typeModels: Point2DConcept">cached_location_t</a>&amp; loc)<span class="keyword">  const </span>{ <span class="keywordflow">return</span> memunit_advanced_ref(x(),loc); }
 247 <a name="l00296"></a>00296
 248 <a name="l00297"></a>00297     <span class="comment">// Only make sense for memory-based locators</span>
 249 <a name="l00298"></a>00298     std::ptrdiff_t         row_size()<span class="keyword">                           const </span>{ <span class="keywordflow">return</span> memunit_step(y()); }    <span class="comment">// distance in mem units (bytes or bits) between adjacent rows</span>
 250 <a name="l00299"></a>00299     std::ptrdiff_t         pixel_size()<span class="keyword">                         const </span>{ <span class="keywordflow">return</span> memunit_step(x()); }    <span class="comment">// distance in mem units (bytes or bits) between adjacent pixels on the same row</span>
 251 <a name="l00300"></a>00300
 252 <a name="l00301"></a>00301     <span class="keywordtype">bool</span>                   is_1d_traversable(x_coord_t width)<span class="keyword">   const </span>{ <span class="keywordflow">return</span> row_size()-pixel_size()*width==0; }   <span class="comment">// is there no gap at the end of each row?</span>
 253 <a name="l00302"></a>00302
 254 <a name="l00303"></a>00303     <span class="comment">// Returns the vertical distance (it2.y-it1.y) between two x_iterators given the difference of their x positions</span>
 255 <a name="l00304"></a>00304     std::ptrdiff_t y_distance_to(<span class="keyword">const</span> <a class="code" href="g_i_l_0044.html" title="Memory-based pixel locator. Models: PixelLocatorConcept,HasDynamicXStepTypeConcept...">this_t</a>&amp; p2, x_coord_t xDiff)<span class="keyword"> const </span>{
 256 <a name="l00305"></a>00305         std::ptrdiff_t rowDiff=memunit_distance(x(),p2.<a class="code" href="g_i_l_0044.html#1e86d37c383d7cbafbd4969321d07ae7">x</a>())-pixel_size()*xDiff;
 257 <a name="l00306"></a>00306         assert(( rowDiff % row_size())==0);
 258 <a name="l00307"></a>00307         <span class="keywordflow">return</span> rowDiff / row_size();
 259 <a name="l00308"></a>00308     }
 260 <a name="l00309"></a>00309
 261 <a name="l00310"></a>00310 <span class="keyword">private</span>:
 262 <a name="l00311"></a>00311     <span class="keyword">template</span> &lt;<span class="keyword">typename</span> X&gt; <span class="keyword">friend</span> <span class="keyword">class </span><a class="code" href="g_i_l_0044.html" title="Memory-based pixel locator. Models: PixelLocatorConcept,HasDynamicXStepTypeConcept...">memory_based_2d_locator</a>;
 263 <a name="l00312"></a>00312     std::ptrdiff_t offset(x_coord_t x, y_coord_t y)<span class="keyword">        const </span>{ <span class="keywordflow">return</span> y*row_size() + x*pixel_size(); }
 264 <a name="l00313"></a>00313     StepIterator _p;
 265 <a name="l00314"></a>00314 };
 266 <a name="l00315"></a>00315
 267 <a name="l00317"></a>00317 <span class="comment">//  PixelBasedConcept</span>
 268 <a name="l00319"></a>00319 <span class="comment"></span>
 269 <a name="l00320"></a>00320 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> SI&gt;
 270 <a name="l00321"></a>00321 <span class="keyword">struct </span>color_space_type&lt;<a class="code" href="g_i_l_0044.html" title="Memory-based pixel locator. Models: PixelLocatorConcept,HasDynamicXStepTypeConcept...">memory_based_2d_locator</a>&lt;SI&gt; &gt; : <span class="keyword">public</span> color_space_type&lt;typename memory_based_2d_locator&lt;SI&gt;::parent_t&gt; {
 271 <a name="l00322"></a>00322 };
 272 <a name="l00323"></a>00323
 273 <a name="l00324"></a>00324 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> SI&gt;
 274 <a name="l00325"></a>00325 <span class="keyword">struct </span>channel_mapping_type&lt;memory_based_2d_locator&lt;SI&gt; &gt; : <span class="keyword">public</span> channel_mapping_type&lt;typename memory_based_2d_locator&lt;SI&gt;::parent_t&gt; {
 275 <a name="l00326"></a>00326 };
 276 <a name="l00327"></a>00327
 277 <a name="l00328"></a>00328 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> SI&gt;
 278 <a name="l00329"></a>00329 <span class="keyword">struct </span>is_planar&lt;memory_based_2d_locator&lt;SI&gt; &gt; : <span class="keyword">public</span> is_planar&lt;typename memory_based_2d_locator&lt;SI&gt;::parent_t&gt; {
 279 <a name="l00330"></a>00330 };
 280 <a name="l00331"></a>00331
 281 <a name="l00332"></a>00332 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> SI&gt;
 282 <a name="l00333"></a>00333 <span class="keyword">struct </span>channel_type&lt;memory_based_2d_locator&lt;SI&gt; &gt; : <span class="keyword">public</span> channel_type&lt;typename memory_based_2d_locator&lt;SI&gt;::parent_t&gt; {
 283 <a name="l00334"></a>00334 };
 284 <a name="l00335"></a>00335
 285 <a name="l00337"></a>00337 <span class="comment">//  HasDynamicXStepTypeConcept</span>
 286 <a name="l00339"></a>00339 <span class="comment"></span>
 287 <a name="l00340"></a>00340 <span class="comment">// Take the base iterator of SI (which is typically a step iterator) and change it to have a step in x</span>
 288 <a name="l00341"></a>00341 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> SI&gt;
 289 <a name="l00342"></a>00342 <span class="keyword">struct </span>dynamic_x_step_type&lt;memory_based_2d_locator&lt;SI&gt; &gt; {
 290 <a name="l00343"></a>00343 <span class="keyword">private</span>:
 291 <a name="l00344"></a>00344     <span class="keyword">typedef</span> <span class="keyword">typename</span> iterator_adaptor_get_base&lt;SI&gt;::type                        base_iterator_t;
 292 <a name="l00345"></a>00345     <span class="keyword">typedef</span> <span class="keyword">typename</span> dynamic_x_step_type&lt;base_iterator_t&gt;::type                 base_iterator_step_t;
 293 <a name="l00346"></a>00346     <span class="keyword">typedef</span> <span class="keyword">typename</span> iterator_adaptor_rebind&lt;SI, base_iterator_step_t&gt;::type    dynamic_step_base_t;
 294 <a name="l00347"></a>00347 <span class="keyword">public</span>:
 295 <a name="l00348"></a>00348     <span class="keyword">typedef</span> memory_based_2d_locator&lt;dynamic_step_base_t&gt; type;
 296 <a name="l00349"></a>00349 };
 297 <a name="l00350"></a>00350
 298 <a name="l00352"></a>00352 <span class="comment">//  HasDynamicYStepTypeConcept</span>
 299 <a name="l00354"></a>00354 <span class="comment"></span>
 300 <a name="l00355"></a>00355 <span class="keyword">template</span> &lt;<span class="keyword">typename</span> SI&gt;
 301 <a name="l00356"></a>00356 <span class="keyword">struct </span>dynamic_y_step_type&lt;memory_based_2d_locator&lt;SI&gt; &gt; {
 302 <a name="l00357"></a>00357     <span class="keyword">typedef</span> memory_based_2d_locator&lt;SI&gt; type;
 303 <a name="l00358"></a>00358 };
 304 <a name="l00359"></a>00359
 305 <a name="l00360"></a>00360 } }  <span class="comment">// namespace boost::gil</span>
 306 <a name="l00361"></a>00361
 307 <a name="l00362"></a>00362 <span class="preprocessor">#endif</span>
 308 </pre></div></div>
 309 <hr size="1"><address style="text-align: right;"><small>Generated on Sat May 2 13:50:14 2009 for Generic Image Library by&nbsp;
 310 <a href="http://www.doxygen.org/index.html">
 311 <img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.6 </small></address>
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