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   <div id="projectname">CMU462 Library
   &#160;<span id="projectnumber">1.0</span>
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   <div id="projectbrief">15-462/15-662: Computer Graphics (Fall 2015)</div>
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<li class="navelem"><a class="el" href="dir_d44c64559bbebec7f509842c48db8b23.html">include</a></li><li class="navelem"><a class="el" href="dir_93cde9e1f49b119e2b24d2ae2dcc682a.html">CMU462</a></li>  </ul>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="preprocessor">#ifndef CMU462_COLOR_H</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="preprocessor">#define CMU462_COLOR_H</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;</div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="preprocessor">#include &lt;string&gt;</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;</div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespace_c_m_u462.html">CMU462</a> {</div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;</div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="keyword">class </span>Color {</div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160; <span class="keyword">public</span>:</div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;  <span class="comment">// Components.</span></div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;  <span class="keywordtype">float</span> <a class="code" href="class_c_m_u462_1_1_color.html#ae925fc295f8f5dcdaacf851e8c4880cb">r</a>; </div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;  <span class="keywordtype">float</span> <a class="code" href="class_c_m_u462_1_1_color.html#a4a3179778bc75342961e5b96a1b8b228">g</a>; </div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;  <span class="keywordtype">float</span> <a class="code" href="class_c_m_u462_1_1_color.html#a5ae56ddf662d80a6cfd423664d99d648">b</a>; </div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;  <span class="comment">// constants</span></div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;  <span class="keyword">static</span> <span class="keyword">const</span> <a class="code" href="class_c_m_u462_1_1_color.html#ae6acb0aab5c9be2fe91b7d3d7ca1b3e4">Color</a> White;</div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;  <span class="keyword">static</span> <span class="keyword">const</span> <a class="code" href="class_c_m_u462_1_1_color.html#ae6acb0aab5c9be2fe91b7d3d7ca1b3e4">Color</a> Black;</div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;</div>
<div class="line"><a name="l00034"></a><span class="lineno"><a class="line" href="class_c_m_u462_1_1_color.html#ae6acb0aab5c9be2fe91b7d3d7ca1b3e4">   34</a></span>&#160;  <a class="code" href="class_c_m_u462_1_1_color.html#ae6acb0aab5c9be2fe91b7d3d7ca1b3e4">Color</a>(<span class="keywordtype">float</span> r = 0, <span class="keywordtype">float</span> g = 0, <span class="keywordtype">float</span> b = 0, <span class="keywordtype">float</span> <a class="code" href="class_c_m_u462_1_1_color.html#af4499c6f417283b77c3fa38697df65c0">a</a> = 1.0)</div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;      : r(r), g(g), b(b), <a class="code" href="class_c_m_u462_1_1_color.html#af4499c6f417283b77c3fa38697df65c0">a</a>(<a class="code" href="class_c_m_u462_1_1_color.html#af4499c6f417283b77c3fa38697df65c0">a</a>) {}</div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;  <a class="code" href="class_c_m_u462_1_1_color.html#ae6acb0aab5c9be2fe91b7d3d7ca1b3e4">Color</a>(<span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *arr);</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;  <span class="comment">// Addition. Alpha is ignored.</span></div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;  <span class="keyword">inline</span> <a class="code" href="class_c_m_u462_1_1_color.html">Color</a> operator+(<span class="keyword">const</span> <a class="code" href="class_c_m_u462_1_1_color.html">Color</a> &amp;rhs)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;    <span class="keywordflow">return</span> <a class="code" href="class_c_m_u462_1_1_color.html#ae6acb0aab5c9be2fe91b7d3d7ca1b3e4">Color</a>(r + rhs.r, g + rhs.g, b + rhs.b, <a class="code" href="class_c_m_u462_1_1_color.html#af4499c6f417283b77c3fa38697df65c0">a</a> + rhs.a);</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;</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;  <span class="keyword">inline</span> <a class="code" href="class_c_m_u462_1_1_color.html#ae6acb0aab5c9be2fe91b7d3d7ca1b3e4">Color</a> &amp;operator+=(<span class="keyword">const</span> <a class="code" href="class_c_m_u462_1_1_color.html#ae6acb0aab5c9be2fe91b7d3d7ca1b3e4">Color</a> &amp;rhs) {</div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;    r += rhs.r;</div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;    g += rhs.g;</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;    b += rhs.b;</div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;    <a class="code" href="class_c_m_u462_1_1_color.html#af4499c6f417283b77c3fa38697df65c0">a</a> += rhs.a;</div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;    <span class="keywordflow">return</span> *<span class="keyword">this</span>;</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;</div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;  <span class="comment">// Vector multiplication. Alpha is ignored.</span></div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;  <span class="keyword">inline</span> <a class="code" href="class_c_m_u462_1_1_color.html#ae6acb0aab5c9be2fe91b7d3d7ca1b3e4">Color</a> operator*(<span class="keyword">const</span> <a class="code" href="class_c_m_u462_1_1_color.html#ae6acb0aab5c9be2fe91b7d3d7ca1b3e4">Color</a> &amp;rhs)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;    <span class="keywordflow">return</span> <a class="code" href="class_c_m_u462_1_1_color.html#ae6acb0aab5c9be2fe91b7d3d7ca1b3e4">Color</a>(r * rhs.r, g * rhs.g, b * rhs.b, <a class="code" href="class_c_m_u462_1_1_color.html#af4499c6f417283b77c3fa38697df65c0">a</a> * rhs.a);</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;</div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;  <span class="keyword">inline</span> <a class="code" href="class_c_m_u462_1_1_color.html#ae6acb0aab5c9be2fe91b7d3d7ca1b3e4">Color</a> &amp;operator*=(<span class="keyword">const</span> <a class="code" href="class_c_m_u462_1_1_color.html#ae6acb0aab5c9be2fe91b7d3d7ca1b3e4">Color</a> &amp;rhs) {</div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;    r *= rhs.r;</div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;    g *= rhs.g;</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;    b *= rhs.b;</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;    <a class="code" href="class_c_m_u462_1_1_color.html#af4499c6f417283b77c3fa38697df65c0">a</a> *= rhs.a;</div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;    <span class="keywordflow">return</span> *<span class="keyword">this</span>;</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;</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;  <span class="comment">// Scalar multiplication.</span></div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;  <span class="keyword">inline</span> <a class="code" href="class_c_m_u462_1_1_color.html#ae6acb0aab5c9be2fe91b7d3d7ca1b3e4">Color</a> operator*(<span class="keywordtype">float</span> s)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;    <span class="keywordflow">return</span> <a class="code" href="class_c_m_u462_1_1_color.html#ae6acb0aab5c9be2fe91b7d3d7ca1b3e4">Color</a>(r * s, g * s, b * s, <a class="code" href="class_c_m_u462_1_1_color.html#af4499c6f417283b77c3fa38697df65c0">a</a> * s);</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;  <span class="keyword">inline</span> <a class="code" href="class_c_m_u462_1_1_color.html#ae6acb0aab5c9be2fe91b7d3d7ca1b3e4">Color</a> &amp;operator*=(<span class="keywordtype">float</span> s) {</div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;    r *= s;</div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;    g *= s;</div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;    b *= s;</div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;    <a class="code" href="class_c_m_u462_1_1_color.html#af4499c6f417283b77c3fa38697df65c0">a</a> *= s;</div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;    <span class="keywordflow">return</span> *<span class="keyword">this</span>;</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;</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;  <span class="comment">// comparison</span></div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;  <span class="keyword">inline</span> <span class="keywordtype">bool</span> operator==(<span class="keyword">const</span> <a class="code" href="class_c_m_u462_1_1_color.html#ae6acb0aab5c9be2fe91b7d3d7ca1b3e4">Color</a> &amp;rhs)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;    <span class="keywordflow">return</span> r == rhs.r &amp;&amp; g == rhs.g &amp;&amp; b == rhs.b &amp;&amp; <a class="code" href="class_c_m_u462_1_1_color.html#af4499c6f417283b77c3fa38697df65c0">a</a> == rhs.a;</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;</div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;  <span class="keyword">inline</span> <span class="keywordtype">bool</span> operator!=(<span class="keyword">const</span> <a class="code" href="class_c_m_u462_1_1_color.html#ae6acb0aab5c9be2fe91b7d3d7ca1b3e4">Color</a> &amp;rhs)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> !operator==(rhs); }</div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;</div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;  <span class="keyword">static</span> <a class="code" href="class_c_m_u462_1_1_color.html#ae6acb0aab5c9be2fe91b7d3d7ca1b3e4">Color</a> <a class="code" href="class_c_m_u462_1_1_color.html#ab558b2442c4b1ce94aa06181672c9da8">fromHex</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *s);</div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;</div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;  std::string <a class="code" href="class_c_m_u462_1_1_color.html#a7cd9978ae467f8979d3ab24b7096a4ad">toHex</a>() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;</div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;};  <span class="comment">// class Color</span></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;<span class="comment">// Commutable scalar multiplication.</span></div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;<span class="keyword">inline</span> Color operator*(<span class="keywordtype">float</span> s, <span class="keyword">const</span> Color &amp;c) { <span class="keywordflow">return</span> c * s; }</div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;</div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;<span class="comment">// Prints components.</span></div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;std::ostream &amp;operator&lt;&lt;(std::ostream &amp;os, <span class="keyword">const</span> Color &amp;c);</div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;</div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;}  <span class="comment">// namespace CMU462</span></div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;</div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="ttc" id="namespace_c_m_u462_html"><div class="ttname"><a href="namespace_c_m_u462.html">CMU462</a></div><div class="ttdef"><b>Definition:</b> color.h:6</div></div>
<div class="ttc" id="class_c_m_u462_1_1_color_html_af4499c6f417283b77c3fa38697df65c0"><div class="ttname"><a href="class_c_m_u462_1_1_color.html#af4499c6f417283b77c3fa38697df65c0">CMU462::Color::a</a></div><div class="ttdeci">float a</div><div class="ttdoc">value of alpha chanel </div><div class="ttdef"><b>Definition:</b> color.h:20</div></div>
<div class="ttc" id="class_c_m_u462_1_1_color_html_ab558b2442c4b1ce94aa06181672c9da8"><div class="ttname"><a href="class_c_m_u462_1_1_color.html#ab558b2442c4b1ce94aa06181672c9da8">CMU462::Color::fromHex</a></div><div class="ttdeci">static Color fromHex(const char *s)</div><div class="ttdoc">Construct a Color object from a hexadecimal (8-bit per component) ASCII string. </div><div class="ttdef"><b>Definition:</b> color.cpp:24</div></div>
<div class="ttc" id="class_c_m_u462_1_1_color_html_ae925fc295f8f5dcdaacf851e8c4880cb"><div class="ttname"><a href="class_c_m_u462_1_1_color.html#ae925fc295f8f5dcdaacf851e8c4880cb">CMU462::Color::r</a></div><div class="ttdeci">float r</div><div class="ttdoc">value of red chanel </div><div class="ttdef"><b>Definition:</b> color.h:17</div></div>
<div class="ttc" id="class_c_m_u462_1_1_color_html_a4a3179778bc75342961e5b96a1b8b228"><div class="ttname"><a href="class_c_m_u462_1_1_color.html#a4a3179778bc75342961e5b96a1b8b228">CMU462::Color::g</a></div><div class="ttdeci">float g</div><div class="ttdoc">value of green chanel </div><div class="ttdef"><b>Definition:</b> color.h:18</div></div>
<div class="ttc" id="class_c_m_u462_1_1_color_html_a7cd9978ae467f8979d3ab24b7096a4ad"><div class="ttname"><a href="class_c_m_u462_1_1_color.html#a7cd9978ae467f8979d3ab24b7096a4ad">CMU462::Color::toHex</a></div><div class="ttdeci">std::string toHex() const </div><div class="ttdoc">Returns a hexadecimal string rrggbb encoding this color. </div><div class="ttdef"><b>Definition:</b> color.cpp:55</div></div>
<div class="ttc" id="class_c_m_u462_1_1_color_html_a5ae56ddf662d80a6cfd423664d99d648"><div class="ttname"><a href="class_c_m_u462_1_1_color.html#a5ae56ddf662d80a6cfd423664d99d648">CMU462::Color::b</a></div><div class="ttdeci">float b</div><div class="ttdoc">value of blue chanel </div><div class="ttdef"><b>Definition:</b> color.h:19</div></div>
<div class="ttc" id="class_c_m_u462_1_1_color_html"><div class="ttname"><a href="class_c_m_u462_1_1_color.html">CMU462::Color</a></div><div class="ttdoc">Encodes a color via additive red, green, and blue chanel values. </div><div class="ttdef"><b>Definition:</b> color.h:13</div></div>
<div class="ttc" id="class_c_m_u462_1_1_color_html_ae6acb0aab5c9be2fe91b7d3d7ca1b3e4"><div class="ttname"><a href="class_c_m_u462_1_1_color.html#ae6acb0aab5c9be2fe91b7d3d7ca1b3e4">CMU462::Color::Color</a></div><div class="ttdeci">Color(float r=0, float g=0, float b=0, float a=1.0)</div><div class="ttdoc">Constructor. </div><div class="ttdef"><b>Definition:</b> color.h:35</div></div>
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