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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_EXTENSION_DYNAMIC_IMAGE_DYNAMIC_AT_C_HPP</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#define BOOST_GIL_EXTENSION_DYNAMIC_IMAGE_DYNAMIC_AT_C_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/detail/mp11.hpp></span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> </div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include <boost/preprocessor/facilities/empty.hpp></span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include <boost/preprocessor/repetition/repeat.hpp></span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include <stdexcept></span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> </div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="keyword">namespace </span>boost { <span class="keyword">namespace </span>gil {</div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> </div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment">// Constructs for static-to-dynamic integer convesion</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#define GIL_AT_C_VALUE(z, N, text) mp11::mp_at_c<IntTypes, S+N>::value,</span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#define GIL_DYNAMIC_AT_C_LIMIT 226 // size of the maximum vector to handle</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> </div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#define GIL_AT_C_LOOKUP(z, NUM, text) \</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor"> template<std::size_t S> \</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor"> struct at_c_fn<S,NUM> { \</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor"> template <typename IntTypes, typename ValueType> inline \</span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor"> static ValueType apply(std::size_t index) { \</span></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor"> static ValueType table[] = { \</span></div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor"> BOOST_PP_REPEAT(NUM, GIL_AT_C_VALUE, BOOST_PP_EMPTY) \</span></div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor"> }; \</span></div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor"> return table[index]; \</span></div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor"> } \</span></div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor"> };</span></div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> </div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="keyword">namespace </span>detail {</div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="keyword">namespace </span><a class="code" href="group___color_base_model_homogeneous.html#gae2eaf5eecbad94d7dc6432b8f759fba0">at_c</a> {</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="keyword">template</span> <std::<span class="keywordtype">size_t</span> START, std::<span class="keywordtype">size_t</span> NUM> <span class="keyword">struct </span>at_c_fn;</div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  BOOST_PP_REPEAT(GIL_DYNAMIC_AT_C_LIMIT, GIL_AT_C_LOOKUP, BOOST_PP_EMPTY)</div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> </div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keyword">template</span> <std::<span class="keywordtype">size_t</span> QUOT> <span class="keyword">struct </span>at_c_impl;</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>  <span class="keyword">template</span> <></div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="keyword">struct </span>at_c_impl<0> {</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> IntTypes, <span class="keyword">typename</span> ValueType> <span class="keyword">inline</span></div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keyword">static</span> ValueType apply(std::size_t index) {</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keywordflow">return</span> at_c_fn<0, mp11::mp_size<IntTypes>::value>::template apply<IntTypes,ValueType>(index);</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  }</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  };</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span> </div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keyword">template</span> <></div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keyword">struct </span>at_c_impl<1> {</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> IntTypes, <span class="keyword">typename</span> ValueType> <span class="keyword">inline</span></div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keyword">static</span> ValueType apply(std::size_t index) {</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keyword">const</span> std::size_t SIZE = mp11::mp_size<IntTypes>::value;</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keyword">const</span> std::size_t REM = SIZE % GIL_DYNAMIC_AT_C_LIMIT;</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keywordflow">switch</span> (index / GIL_DYNAMIC_AT_C_LIMIT) {</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keywordflow">case</span> 0: <span class="keywordflow">return</span> at_c_fn<0 ,GIL_DYNAMIC_AT_C_LIMIT-1>::template apply<IntTypes,ValueType>(index);</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keywordflow">case</span> 1: <span class="keywordflow">return</span> at_c_fn<GIL_DYNAMIC_AT_C_LIMIT ,REM >::template apply<IntTypes,ValueType>(index - GIL_DYNAMIC_AT_C_LIMIT);</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="keywordflow">throw</span>;</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>  };</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span> </div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keyword">template</span> <></div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keyword">struct </span>at_c_impl<2> {</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> IntTypes, <span class="keyword">typename</span> ValueType> <span class="keyword">inline</span></div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keyword">static</span> ValueType apply(std::size_t index) {</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keyword">const</span> std::size_t SIZE = mp11::mp_size<IntTypes>::value;</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keyword">const</span> std::size_t REM = SIZE % GIL_DYNAMIC_AT_C_LIMIT;</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keywordflow">switch</span> (index / GIL_DYNAMIC_AT_C_LIMIT) {</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="keywordflow">case</span> 0: <span class="keywordflow">return</span> at_c_fn<0 ,GIL_DYNAMIC_AT_C_LIMIT-1>::template apply<IntTypes,ValueType>(index);</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keywordflow">case</span> 1: <span class="keywordflow">return</span> at_c_fn<GIL_DYNAMIC_AT_C_LIMIT ,GIL_DYNAMIC_AT_C_LIMIT-1>::template apply<IntTypes,ValueType>(index - GIL_DYNAMIC_AT_C_LIMIT);</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordflow">case</span> 2: <span class="keywordflow">return</span> at_c_fn<GIL_DYNAMIC_AT_C_LIMIT*2,REM >::template apply<IntTypes,ValueType>(index - GIL_DYNAMIC_AT_C_LIMIT*2);</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  };</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keywordflow">throw</span>;</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  }</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> <></div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keyword">struct </span>at_c_impl<3> {</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> IntTypes, <span class="keyword">typename</span> ValueType> <span class="keyword">inline</span></div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keyword">static</span> ValueType apply(std::size_t index) {</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keyword">const</span> std::size_t SIZE = mp11::mp_size<IntTypes>::value;</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keyword">const</span> std::size_t REM = SIZE % GIL_DYNAMIC_AT_C_LIMIT;</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keywordflow">switch</span> (index / GIL_DYNAMIC_AT_C_LIMIT) {</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keywordflow">case</span> 0: <span class="keywordflow">return</span> at_c_fn<0 ,GIL_DYNAMIC_AT_C_LIMIT-1>::template apply<IntTypes,ValueType>(index);</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keywordflow">case</span> 1: <span class="keywordflow">return</span> at_c_fn<GIL_DYNAMIC_AT_C_LIMIT ,GIL_DYNAMIC_AT_C_LIMIT-1>::template apply<IntTypes,ValueType>(index - GIL_DYNAMIC_AT_C_LIMIT);</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keywordflow">case</span> 2: <span class="keywordflow">return</span> at_c_fn<GIL_DYNAMIC_AT_C_LIMIT*2,GIL_DYNAMIC_AT_C_LIMIT-1>::template apply<IntTypes,ValueType>(index - GIL_DYNAMIC_AT_C_LIMIT*2);</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keywordflow">case</span> 3: <span class="keywordflow">return</span> at_c_fn<GIL_DYNAMIC_AT_C_LIMIT*3,REM >::template apply<IntTypes,ValueType>(index - GIL_DYNAMIC_AT_C_LIMIT*3);</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  };</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordflow">throw</span>;</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>  };</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</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> </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="keyword">template</span> <<span class="keyword">typename</span> IntTypes, <span class="keyword">typename</span> ValueType> <span class="keyword">inline</span></div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span> ValueType <a class="code" href="group___color_base_model_homogeneous.html#gae2eaf5eecbad94d7dc6432b8f759fba0">at_c</a>(std::size_t index) {</div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="keyword">const</span> std::size_t Size=mp11::mp_size<IntTypes>::value;</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keywordflow">return</span> detail::at_c::at_c_impl<Size/GIL_DYNAMIC_AT_C_LIMIT>::template apply<IntTypes,ValueType>(index);</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span> }</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span> </div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span> <span class="preprocessor">#undef GIL_AT_C_VALUE</span></div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="preprocessor">#undef GIL_DYNAMIC_AT_C_LIMIT</span></div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="preprocessor">#undef GIL_AT_C_LOOKUP</span></div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span> </div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span> }} <span class="comment">// namespace boost::gil</span></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> <span class="preprocessor">#endif</span></div><div class="ttc" id="group___color_base_model_homogeneous_html_gae2eaf5eecbad94d7dc6432b8f759fba0"><div class="ttname"><a href="group___color_base_model_homogeneous.html#gae2eaf5eecbad94d7dc6432b8f759fba0">boost::gil::at_c</a></div><div class="ttdeci">auto at_c(detail::homogeneous_color_base< E, L, N > &p) -> typename std::add_lvalue_reference< E >::type</div><div class="ttdoc">Provides mutable access to the K-th element, in physical order.</div><div class="ttdef"><b>Definition:</b> color_base.hpp:597</div></div>
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