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  47 <div class="title">point.hpp</div>  </div>
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  50 <div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">//</span></div><div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment">// Copyright 2005-2007 Adobe Systems Incorporated</span></div><div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment">//</span></div><div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment">// Distributed under the Boost Software License, Version 1.0</span></div><div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment">// See accompanying file LICENSE_1_0.txt or copy at</span></div><div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment">// http://www.boost.org/LICENSE_1_0.txt</span></div><div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment">//</span></div><div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="preprocessor">#ifndef BOOST_GIL_POINT_HPP</span></div><div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="preprocessor">#define BOOST_GIL_POINT_HPP</span></div><div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;</div><div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="preprocessor">#include &lt;boost/gil/utilities.hpp&gt;</span></div><div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="preprocessor">#include &lt;boost/gil/detail/std_common_type.hpp&gt;</span></div><div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;</div><div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="preprocessor">#include &lt;boost/config.hpp&gt;</span></div><div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;</div><div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="preprocessor">#include &lt;cstddef&gt;</span></div><div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="preprocessor">#include &lt;type_traits&gt;</span></div><div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;</div><div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="keyword">namespace </span>boost { <span class="keyword">namespace </span>gil {</div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;</div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;</div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;<span class="keyword">class </span>point</div><div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;{</div><div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;<span class="keyword">public</span>:</div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;    <span class="keyword">using</span> value_type = T;</div><div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;</div><div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;    <span class="keyword">template</span>&lt;std::<span class="keywordtype">size_t</span> D&gt;</div><div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;    <span class="keyword">struct </span>axis</div><div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;    {</div><div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;        <span class="keyword">using</span> coord_t = value_type;</div><div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;    };</div><div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;</div><div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;    <span class="keyword">static</span> constexpr std::size_t num_dimensions = 2;</div><div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;</div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;    point() = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;    point(T px, T py) : x(px), y(py) {}</div><div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;</div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;    point operator&lt;&lt;(std::ptrdiff_t shift)<span class="keyword"> const</span></div><div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;<span class="keyword">    </span>{</div><div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;        <span class="keywordflow">return</span> point(x &lt;&lt; shift, y &lt;&lt; shift);</div><div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;    }</div><div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;</div><div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;    point operator&gt;&gt;(std::ptrdiff_t shift)<span class="keyword"> const</span></div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;<span class="keyword">    </span>{</div><div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;        <span class="keywordflow">return</span> point(x &gt;&gt; shift, y &gt;&gt; shift);</div><div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;    }</div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;</div><div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;    point&amp; operator+=(point <span class="keyword">const</span>&amp; p)</div><div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;    {</div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;        x += p.x;</div><div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;        y += p.y;</div><div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;        <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;    }</div><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;</div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;    point&amp; operator-=(point <span class="keyword">const</span>&amp; p)</div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;    {</div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;        x -= p.x;</div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;        y -= p.y;</div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;        <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;    }</div><div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;</div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;    point&amp; operator/=(<span class="keywordtype">double</span> d)</div><div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;    {</div><div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;        <span class="keywordflow">if</span> (d &lt; 0 || 0 &lt; d)</div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;        {</div><div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;            x = static_cast&lt;T&gt;(x / d);</div><div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;            y = static_cast&lt;T&gt;(y / d);</div><div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;        }</div><div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;        <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div><div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;    }</div><div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;</div><div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;    point&amp; operator*=(<span class="keywordtype">double</span> d)</div><div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;    {</div><div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;        x = static_cast&lt;T&gt;(x * d);</div><div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;        y = static_cast&lt;T&gt;(y * d);</div><div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;        <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div><div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;    }</div><div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;</div><div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;    T <span class="keyword">const</span>&amp; operator[](std::size_t i)<span class="keyword"> const</span></div><div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;<span class="keyword">    </span>{</div><div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;        <span class="keywordflow">return</span> this-&gt;*mem_array[i];</div><div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;    }</div><div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;</div><div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;    T&amp; operator[](std::size_t i)</div><div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;    {</div><div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;        <span class="keywordflow">return</span> this-&gt;*mem_array[i];</div><div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;    }</div><div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;</div><div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;    T x{0};</div><div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;    T y{0};</div><div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;</div><div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;<span class="keyword">private</span>:</div><div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;    <span class="comment">// this static array of pointers to member variables makes operator[] safe</span></div><div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;    <span class="comment">// and doesn&#39;t seem to exhibit any performance penalty.</span></div><div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;    <span class="keyword">static</span> T point&lt;T&gt;::* <span class="keyword">const</span> mem_array[num_dimensions];</div><div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;};</div><div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;</div><div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;<span class="keyword">using</span> point2 = point&lt;T&gt;;</div><div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;</div><div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;<span class="keyword">using</span> point_t = point&lt;std::ptrdiff_t&gt;;</div><div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;</div><div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;T point&lt;T&gt;::* <span class="keyword">const</span> point&lt;T&gt;::mem_array[point&lt;T&gt;::num_dimensions] =</div><div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;{</div><div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;    &amp;point&lt;T&gt;::x,</div><div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;    &amp;point&lt;T&gt;::y</div><div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;};</div><div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;</div><div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;BOOST_FORCEINLINE</div><div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;<span class="keywordtype">bool</span> operator==(<span class="keyword">const</span> point&lt;T&gt;&amp; p1, <span class="keyword">const</span> point&lt;T&gt;&amp; p2)</div><div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;{</div><div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;    <span class="keywordflow">return</span> p1.x == p2.x &amp;&amp; p1.y == p2.y;</div><div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;}</div><div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;</div><div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;BOOST_FORCEINLINE</div><div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;<span class="keywordtype">bool</span> operator!=(<span class="keyword">const</span> point&lt;T&gt;&amp; p1, <span class="keyword">const</span> point&lt;T&gt;&amp; p2)</div><div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;{</div><div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;    <span class="keywordflow">return</span> p1.x != p2.x || p1.y != p2.y;</div><div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;}</div><div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;</div><div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;BOOST_FORCEINLINE</div><div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;point&lt;T&gt; operator+(<span class="keyword">const</span> point&lt;T&gt;&amp; p1, <span class="keyword">const</span> point&lt;T&gt;&amp; p2)</div><div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;{</div><div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;    <span class="keywordflow">return</span> { p1.x + p2.x, p1.y + p2.y };</div><div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;}</div><div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;</div><div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;BOOST_FORCEINLINE</div><div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;point&lt;T&gt; operator-(<span class="keyword">const</span> point&lt;T&gt;&amp; p)</div><div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;{</div><div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;    <span class="keywordflow">return</span> { -p.x, -p.y };</div><div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;}</div><div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;</div><div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;BOOST_FORCEINLINE</div><div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;point&lt;T&gt; operator-(<span class="keyword">const</span> point&lt;T&gt;&amp; p1, <span class="keyword">const</span> point&lt;T&gt;&amp; p2)</div><div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;{</div><div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;    <span class="keywordflow">return</span> { p1.x - p2.x, p1.y - p2.y };</div><div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;}</div><div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;</div><div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T, <span class="keyword">typename</span> D&gt;</div><div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;BOOST_FORCEINLINE</div><div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;<span class="keyword">auto</span> operator/(point&lt;T&gt; <span class="keyword">const</span>&amp; p, D d)</div><div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;    -&gt; <span class="keyword">typename</span> std::enable_if</div><div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;    &lt;</div><div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;        std::is_arithmetic&lt;D&gt;::value,</div><div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;        point&lt;typename detail::std_common_type&lt;T, D&gt;::type&gt;</div><div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;    &gt;::type</div><div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;{</div><div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;    static_assert(std::is_arithmetic&lt;D&gt;::value, <span class="stringliteral">&quot;denominator is not arithmetic type&quot;</span>);</div><div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;    <span class="keyword">using</span> result_type = <span class="keyword">typename</span> detail::std_common_type&lt;T, D&gt;::type;</div><div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;    <span class="keywordflow">if</span> (d &lt; 0 || 0 &lt; d)</div><div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;    {</div><div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;        <span class="keywordtype">double</span> <span class="keyword">const</span> x = static_cast&lt;double&gt;(p.x) / static_cast&lt;double&gt;(d);</div><div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;        <span class="keywordtype">double</span> <span class="keyword">const</span> y = static_cast&lt;double&gt;(p.y) / static_cast&lt;double&gt;(d);</div><div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;        <span class="keywordflow">return</span> point&lt;result_type&gt;{</div><div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;            static_cast&lt;result_type&gt;(iround(x)),</div><div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;            static_cast&lt;result_type&gt;(iround(y))};</div><div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;    }</div><div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;    <span class="keywordflow">else</span></div><div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;    {</div><div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;        <span class="keywordflow">return</span> point&lt;result_type&gt;{0, 0};</div><div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;    }</div><div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;}</div><div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;</div><div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T, <span class="keyword">typename</span> M&gt;</div><div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;BOOST_FORCEINLINE</div><div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;<span class="keyword">auto</span> operator*(point&lt;T&gt; <span class="keyword">const</span>&amp; p, M m)</div><div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;    -&gt; <span class="keyword">typename</span> std::enable_if</div><div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;    &lt;</div><div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;        std::is_arithmetic&lt;M&gt;::value,</div><div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;        point&lt;typename detail::std_common_type&lt;T, M&gt;::type&gt;</div><div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;    &gt;::type</div><div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;{</div><div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;    static_assert(std::is_arithmetic&lt;M&gt;::value, <span class="stringliteral">&quot;multiplier is not arithmetic type&quot;</span>);</div><div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;    <span class="keyword">using</span> result_type = <span class="keyword">typename</span> detail::std_common_type&lt;T, M&gt;::type;</div><div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;    <span class="keywordflow">return</span> point&lt;result_type&gt;{p.x * m, p.y * m};</div><div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;}</div><div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;</div><div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T, <span class="keyword">typename</span> M&gt;</div><div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;BOOST_FORCEINLINE</div><div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;<span class="keyword">auto</span> operator*(M m, point&lt;T&gt; <span class="keyword">const</span>&amp; p)</div><div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;    -&gt; <span class="keyword">typename</span> std::enable_if</div><div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;    &lt;</div><div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;        std::is_arithmetic&lt;M&gt;::value,</div><div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;        point&lt;typename detail::std_common_type&lt;T, M&gt;::type&gt;</div><div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;    &gt;::type</div><div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;{</div><div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;    static_assert(std::is_arithmetic&lt;M&gt;::value, <span class="stringliteral">&quot;multiplier is not arithmetic type&quot;</span>);</div><div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;    <span class="keyword">using</span> result_type = <span class="keyword">typename</span> detail::std_common_type&lt;T, M&gt;::type;</div><div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;    <span class="keywordflow">return</span> point&lt;result_type&gt;{p.x * m, p.y * m};</div><div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;}</div><div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;</div><div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;<span class="keyword">template</span> &lt;std::<span class="keywordtype">size_t</span> K, <span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;BOOST_FORCEINLINE</div><div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;T <span class="keyword">const</span>&amp; axis_value(point&lt;T&gt; <span class="keyword">const</span>&amp; p)</div><div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;{</div><div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;    static_assert(K &lt; point&lt;T&gt;::num_dimensions, <span class="stringliteral">&quot;axis index out of range&quot;</span>);</div><div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;    <span class="keywordflow">return</span> p[K];</div><div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;}</div><div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;</div><div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;<span class="keyword">template</span> &lt;std::<span class="keywordtype">size_t</span> K, <span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;BOOST_FORCEINLINE</div><div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;T&amp; axis_value(point&lt;T&gt;&amp; p)</div><div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;{</div><div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;    static_assert(K &lt; point&lt;T&gt;::num_dimensions, <span class="stringliteral">&quot;axis index out of range&quot;</span>);</div><div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;    <span class="keywordflow">return</span> p[K];</div><div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;}</div><div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;</div><div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;</div><div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;<span class="keyword">inline</span> point&lt;std::ptrdiff_t&gt; iround(point&lt;T&gt; <span class="keyword">const</span>&amp; p)</div><div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;{</div><div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;    static_assert(std::is_integral&lt;T&gt;::value, <span class="stringliteral">&quot;T is not integer&quot;</span>);</div><div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;    <span class="keywordflow">return</span> { static_cast&lt;std::ptrdiff_t&gt;(p.x), static_cast&lt;std::ptrdiff_t&gt;(p.y) };</div><div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;}</div><div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;</div><div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;<span class="keyword">inline</span> point&lt;std::ptrdiff_t&gt; iround(point&lt;float&gt; <span class="keyword">const</span>&amp; p)</div><div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;{</div><div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;    <span class="keywordflow">return</span> { iround(p.x), iround(p.y) };</div><div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;}</div><div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;</div><div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;<span class="keyword">inline</span> point&lt;std::ptrdiff_t&gt; iround(point&lt;double&gt; <span class="keyword">const</span>&amp; p)</div><div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;{</div><div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;    <span class="keywordflow">return</span> { iround(p.x), iround(p.y) };</div><div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;}</div><div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;</div><div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;<span class="keyword">inline</span> point&lt;std::ptrdiff_t&gt; ifloor(point&lt;float&gt; <span class="keyword">const</span>&amp; p)</div><div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;{</div><div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;    <span class="keywordflow">return</span> { ifloor(p.x), ifloor(p.y) };</div><div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;}</div><div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;</div><div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;<span class="keyword">inline</span> point&lt;std::ptrdiff_t&gt; ifloor(point&lt;double&gt; <span class="keyword">const</span>&amp; p)</div><div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;{</div><div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;    <span class="keywordflow">return</span> { ifloor(p.x), ifloor(p.y) };</div><div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;}</div><div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;</div><div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;<span class="keyword">inline</span> point&lt;std::ptrdiff_t&gt; iceil(point&lt;float&gt; <span class="keyword">const</span>&amp; p)</div><div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;{</div><div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;    <span class="keywordflow">return</span> { iceil(p.x), iceil(p.y) };</div><div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;}</div><div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;</div><div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;<span class="keyword">inline</span> point&lt;std::ptrdiff_t&gt; iceil(point&lt;double&gt; <span class="keyword">const</span>&amp; p)</div><div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;{</div><div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;    <span class="keywordflow">return</span> { iceil(p.x), iceil(p.y) };</div><div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;}</div><div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;</div><div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;}} <span class="comment">// namespace boost::gil</span></div><div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160;</div><div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;<span class="preprocessor">#endif</span></div></div><!-- fragment --></div><!-- contents -->
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