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<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"></span><span class="preprocessor">#define BOOST_GIL_POINT_HPP</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="preprocessor"></span></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;</div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="preprocessor">#include &lt;boost/config.hpp&gt;</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;</div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="preprocessor">#include &lt;cstddef&gt;</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="preprocessor">#include &lt;type_traits&gt;</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;</div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<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>&#160;</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160;<span class="keyword">class </span>point</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160;{</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160; <span class="keyword">using</span> value_type = T;</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160;</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160; <span class="keyword">template</span>&lt;std::<span class="keywordtype">size_t</span> D&gt;</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160; <span class="keyword">struct </span>axis</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160; {</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; <span class="keyword">using</span> coord_t = value_type;</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; };</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; <span class="keyword">static</span> constexpr std::size_t num_dimensions = 2;</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160;</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; point() = <span class="keywordflow">default</span>;</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; point(T px, T py) : x(px), y(py) {}</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160;</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; point operator&lt;&lt;(std::ptrdiff_t shift)<span class="keyword"> const</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160;<span class="keyword"> </span>{</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; <span class="keywordflow">return</span> point(x &lt;&lt; shift, y &lt;&lt; shift);</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; }</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; point operator&gt;&gt;(std::ptrdiff_t shift)<span class="keyword"> const</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160;<span class="keyword"> </span>{</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; <span class="keywordflow">return</span> point(x &gt;&gt; shift, y &gt;&gt; shift);</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; }</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; point&amp; operator+=(point <span class="keyword">const</span>&amp; p)</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; {</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; x += p.x;</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; y += p.y;</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; }</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; point&amp; operator-=(point <span class="keyword">const</span>&amp; p)</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; {</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; x -= p.x;</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; y -= p.y;</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; }</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; point&amp; operator/=(<span class="keywordtype">double</span> d)</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; {</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; <span class="keywordflow">if</span> (d &lt; 0 || 0 &lt; d)</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; {</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; x = <span class="keyword">static_cast&lt;</span>T<span class="keyword">&gt;</span>(x / d);</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; y = <span class="keyword">static_cast&lt;</span>T<span class="keyword">&gt;</span>(y / d);</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; }</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; }</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; point&amp; operator*=(<span class="keywordtype">double</span> d)</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; {</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; x = <span class="keyword">static_cast&lt;</span>T<span class="keyword">&gt;</span>(x * d);</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; y = <span class="keyword">static_cast&lt;</span>T<span class="keyword">&gt;</span>(y * d);</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160; }</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; T <span class="keyword">const</span>&amp; operator[](std::size_t i)<span class="keyword"> const</span></div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160;<span class="keyword"> </span>{</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; <span class="keywordflow">return</span> this-&gt;*mem_array[i];</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; }</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; T&amp; operator[](std::size_t i)</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160; {</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160; <span class="keywordflow">return</span> this-&gt;*mem_array[i];</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160; }</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; T x{0};</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; T y{0};</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160;</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160;<span class="keyword">private</span>:</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160; <span class="comment">// this static array of pointers to member variables makes operator[] safe</span></div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160; <span class="comment">// and doesn&#39;t seem to exhibit any performance penalty.</span></div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</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="l00108"></a><span class="lineno"> 108</span>&#160;};</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160;</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160;<span class="keyword">using</span> point2 = point&lt;T&gt;;</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160;</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160;<span class="keyword">using</span> point_t = point&lt;std::ptrdiff_t&gt;;</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160;</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</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="l00120"></a><span class="lineno"> 120</span>&#160;{</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160; &amp;point&lt;T&gt;::x,</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160; &amp;point&lt;T&gt;::y</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160;};</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160;</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160;BOOST_FORCEINLINE</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</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="l00129"></a><span class="lineno"> 129</span>&#160;{</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160; <span class="keywordflow">return</span> p1.x == p2.x &amp;&amp; p1.y == p2.y;</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160;}</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160;</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160;BOOST_FORCEINLINE</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</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="l00137"></a><span class="lineno"> 137</span>&#160;{</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160; <span class="keywordflow">return</span> p1.x != p2.x || p1.y != p2.y;</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160;}</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160;</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160;BOOST_FORCEINLINE</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</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="l00145"></a><span class="lineno"> 145</span>&#160;{</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160; <span class="keywordflow">return</span> { p1.x + p2.x, p1.y + p2.y };</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160;}</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160;</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160;BOOST_FORCEINLINE</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160;point&lt;T&gt; operator-(<span class="keyword">const</span> point&lt;T&gt;&amp; p)</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160;{</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160; <span class="keywordflow">return</span> { -p.x, -p.y };</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160;}</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160;</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160;BOOST_FORCEINLINE</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</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="l00161"></a><span class="lineno"> 161</span>&#160;{</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160; <span class="keywordflow">return</span> { p1.x - p2.x, p1.y - p2.y };</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160;}</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>&#160;</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</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="l00167"></a><span class="lineno"> 167</span>&#160;BOOST_FORCEINLINE</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>&#160;<span class="keyword">auto</span> operator/(point&lt;T&gt; <span class="keyword">const</span>&amp; p, D d) -&gt; point&lt;typename std::common_type&lt;T, D&gt;::type&gt;</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>&#160;{</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</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="l00171"></a><span class="lineno"> 171</span>&#160; <span class="keyword">using</span> result_type = <span class="keyword">typename</span> std::common_type&lt;T, D&gt;::type;</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160; <span class="keywordflow">if</span> (d &lt; 0 || 0 &lt; d)</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>&#160; {</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>&#160; <span class="keywordtype">double</span> <span class="keyword">const</span> x = p.x / <span class="keyword">static_cast&lt;</span><span class="keywordtype">double</span><span class="keyword">&gt;</span>(d);</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160; <span class="keywordtype">double</span> <span class="keyword">const</span> y = p.y / <span class="keyword">static_cast&lt;</span><span class="keywordtype">double</span><span class="keyword">&gt;</span>(d);</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>&#160; <span class="keywordflow">return</span> point&lt;result_type&gt;{</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160; <span class="keyword">static_cast&lt;</span>result_type<span class="keyword">&gt;</span>(iround(x)),</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160; static_cast&lt;result_type&gt;(iround(y))};</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="keywordflow">else</span></div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>&#160; {</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>&#160; <span class="keywordflow">return</span> point&lt;result_type&gt;{0, 0};</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160; }</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160;}</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160;</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</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="l00188"></a><span class="lineno"> 188</span>&#160;BOOST_FORCEINLINE</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>&#160;<span class="keyword">auto</span> operator*(point&lt;T&gt; <span class="keyword">const</span>&amp; p, M m) -&gt; point&lt;typename std::common_type&lt;T, M&gt;::type&gt;</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; 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="l00192"></a><span class="lineno"> 192</span>&#160; <span class="keyword">using</span> result_type = <span class="keyword">typename</span> std::common_type&lt;T, M&gt;::type;</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>&#160; <span class="keywordflow">return</span> point&lt;result_type&gt;{p.x * m, p.y * m};</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>&#160;}</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>&#160;</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</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="l00198"></a><span class="lineno"> 198</span>&#160;BOOST_FORCEINLINE</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>&#160;<span class="keyword">auto</span> operator*(M m, point&lt;T&gt; <span class="keyword">const</span>&amp; p) -&gt; point&lt;typename std::common_type&lt;T, M&gt;::type&gt;</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>&#160;{</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</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="l00202"></a><span class="lineno"> 202</span>&#160; <span class="keyword">using</span> result_type = <span class="keyword">typename</span> std::common_type&lt;T, M&gt;::type;</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>&#160; <span class="keywordflow">return</span> point&lt;result_type&gt;{p.x * m, p.y * m};</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>&#160;}</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>&#160;</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</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="l00208"></a><span class="lineno"> 208</span>&#160;BOOST_FORCEINLINE</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</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="l00210"></a><span class="lineno"> 210</span>&#160;{</div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</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="l00212"></a><span class="lineno"> 212</span>&#160; <span class="keywordflow">return</span> p[K];</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>&#160;}</div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>&#160;</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</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="l00217"></a><span class="lineno"> 217</span>&#160;BOOST_FORCEINLINE</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>&#160;T&amp; axis_value(point&lt;T&gt;&amp; p)</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>&#160;{</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</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="l00221"></a><span class="lineno"> 221</span>&#160; <span class="keywordflow">return</span> p[K];</div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>&#160;}</div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</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;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</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="l00234"></a><span class="lineno"> 234</span>&#160;{</div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</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="l00236"></a><span class="lineno"> 236</span>&#160; <span class="keywordflow">return</span> { <span class="keyword">static_cast&lt;</span>std::ptrdiff_t<span class="keyword">&gt;</span>(p.x), static_cast&lt;std::ptrdiff_t&gt;(p.y) };</div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>&#160;}</div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>&#160;</div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</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="l00241"></a><span class="lineno"> 241</span>&#160;{</div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>&#160; <span class="keywordflow">return</span> { iround(p.x), iround(p.y) };</div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>&#160;}</div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>&#160;</div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</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="l00247"></a><span class="lineno"> 247</span>&#160;{</div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>&#160; <span class="keywordflow">return</span> { iround(p.x), iround(p.y) };</div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>&#160;}</div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>&#160;</div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</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="l00253"></a><span class="lineno"> 253</span>&#160;{</div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>&#160; <span class="keywordflow">return</span> { ifloor(p.x), ifloor(p.y) };</div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>&#160;}</div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>&#160;</div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</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="l00259"></a><span class="lineno"> 259</span>&#160;{</div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>&#160; <span class="keywordflow">return</span> { ifloor(p.x), ifloor(p.y) };</div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>&#160;}</div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>&#160;</div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</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="l00265"></a><span class="lineno"> 265</span>&#160;{</div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>&#160; <span class="keywordflow">return</span> { iceil(p.x), iceil(p.y) };</div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>&#160;}</div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>&#160;</div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</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="l00271"></a><span class="lineno"> 271</span>&#160;{</div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>&#160; <span class="keywordflow">return</span> { iceil(p.x), iceil(p.y) };</div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>&#160;}</div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>&#160;</div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>&#160;}} <span class="comment">// namespace boost::gil</span></div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>&#160;</div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>&#160;<span class="preprocessor">#endif</span></div>
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