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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">/* $NoKeywords: $ */</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment">/*</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">// Copyright (c) 1993-2012 Robert McNeel &amp; Associates. All rights reserved.</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment">// OpenNURBS, Rhinoceros, and Rhino3D are registered trademarks of Robert</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment">// McNeel &amp; Associates.</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="comment">// THIS SOFTWARE IS PROVIDED &quot;AS IS&quot; WITHOUT EXPRESS OR IMPLIED WARRANTY.</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="comment">// ALL IMPLIED WARRANTIES OF FITNESS FOR ANY PARTICULAR PURPOSE AND OF</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="comment">// MERCHANTABILITY ARE HEREBY DISCLAIMED.</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="comment">// </span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="comment">// For complete openNURBS copyright information see &lt;http://www.opennurbs.org&gt;.</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="comment">//</span><span class="comment"></span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="comment">////////////////////////////////////////////////////////////////</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="comment"></span>*/</div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;</div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="preprocessor">#if !defined(ON_LINE_INC_)</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="preprocessor">#define ON_LINE_INC_</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;</div><div class="line"><a name="l00020"></a><span class="lineno"><a class="line" href="../../d4/d6f/class_o_n___line.html"> 20</a></span>&#160;<span class="keyword">class </span>ON_CLASS <a class="code" href="../../d4/d6f/class_o_n___line.html">ON_Line</a></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;{</div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;<span class="keyword">public</span>:</div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;</div><div class="line"><a name="l00024"></a><span class="lineno"><a class="line" href="../../d4/d6f/class_o_n___line.html#a40862ba49fa925e2086c1ea657853f20"> 24</a></span>&#160; <span class="keyword">static</span> <span class="keyword">const</span> <a class="code" href="../../d4/d6f/class_o_n___line.html">ON_Line</a> <a class="code" href="../../d4/d6f/class_o_n___line.html#a40862ba49fa925e2086c1ea657853f20">ZeroLine</a>; <span class="comment">// (ON_3dPoint::Origin, ON_3dPoint::Origin)</span></div><div class="line"><a name="l00025"></a><span class="lineno"><a class="line" href="../../d4/d6f/class_o_n___line.html#aa2297b8f474d9d84a23ec541c2e7c2f9"> 25</a></span>&#160; <span class="keyword">static</span> <span class="keyword">const</span> <a class="code" href="../../d4/d6f/class_o_n___line.html">ON_Line</a> <a class="code" href="../../d4/d6f/class_o_n___line.html#aa2297b8f474d9d84a23ec541c2e7c2f9">UnsetLine</a>; <span class="comment">// (ON_3dPoint::UnsetPoint, ON_3dPoint::UnsetPoint)</span></div><div class="line"><a name="l00026"></a><span class="lineno"><a class="line" href="../../d4/d6f/class_o_n___line.html#ae20679652aace7da3b465829b8df8ec4"> 26</a></span>&#160; <span class="keyword">static</span> <span class="keyword">const</span> <a class="code" href="../../d4/d6f/class_o_n___line.html">ON_Line</a> <a class="code" href="../../d4/d6f/class_o_n___line.html#ae20679652aace7da3b465829b8df8ec4">NanLine</a>; <span class="comment">// (ON_3dPoint::NanPoint, ON_3dPoint::NanPoint)</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;</div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160; <span class="comment">// Default constructor sets from = to = ON_3dPoint::Origin</span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160; <a class="code" href="../../d4/d6f/class_o_n___line.html">ON_Line</a>();</div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160; ~<a class="code" href="../../d4/d6f/class_o_n___line.html">ON_Line</a>();</div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;</div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160; <span class="keyword">explicit</span> <a class="code" href="../../d4/d6f/class_o_n___line.html">ON_Line</a>(</div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160; <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a> start,</div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160; <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a> end </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;</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160; <span class="keyword">explicit</span> <a class="code" href="../../d4/d6f/class_o_n___line.html">ON_Line</a>(</div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160; <a class="code" href="../../dd/dd9/class_o_n__2d_point.html">ON_2dPoint</a> start,</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160; <a class="code" href="../../dd/dd9/class_o_n__2d_point.html">ON_2dPoint</a> end </div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160; );</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="comment">/*</span></div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160;<span class="comment"> True if from != to.</span></div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; <span class="keywordtype">bool</span> IsValid() <span class="keyword">const</span>;</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; <span class="comment">// line[0] = start point line[1] = end point</span></div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; operator[](<span class="keywordtype">int</span>);</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; operator[](<span class="keywordtype">int</span>) <span class="keyword">const</span>;</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160;</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160;</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; <span class="comment">// Description:</span></div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; <span class="comment">// Create a line from two points.</span></div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; <span class="comment">// Parameters:</span></div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; <span class="comment">// start - [in] point at start of line segment</span></div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; <span class="comment">// end - [in] point at end of line segment</span></div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; <span class="comment">// Returns:</span></div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; <span class="comment">// true if start and end are distinct points.</span></div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; <span class="keywordtype">bool</span> Create( </div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a> start, </div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a> end</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; );</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; <span class="keywordtype">bool</span> Create( </div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; <span class="keyword">const</span> <a class="code" href="../../dd/dd9/class_o_n__2d_point.html">ON_2dPoint</a> start, </div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; <span class="keyword">const</span> <a class="code" href="../../dd/dd9/class_o_n__2d_point.html">ON_2dPoint</a> end</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;</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160;<span class="comment"> Description: </span></div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160;<span class="comment"> Get line&#39;s 3d axis aligned bounding box.</span></div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160;<span class="comment"> 3d bounding box.</span></div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; <a class="code" href="../../d1/d17/class_o_n___bounding_box.html">ON_BoundingBox</a> BoundingBox() <span class="keyword">const</span>;</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="comment">/*</span></div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160;<span class="comment"> Get line&#39;s 3d axis aligned bounding box or the</span></div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160;<span class="comment"> union of the input box with the object&#39;s bounding box.</span></div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160;<span class="comment"> bbox - [in/out] 3d axis aligned bounding box</span></div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160;<span class="comment"> bGrowBox - [in] (default=false) </span></div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160;<span class="comment"> If true, then the union of the input bbox and the </span></div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160;<span class="comment"> object&#39;s bounding box is returned in bbox. </span></div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160;<span class="comment"> If false, the object&#39;s bounding box is returned in bbox.</span></div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160;<span class="comment"> true if object has bounding box and calculation was successful.</span></div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160; <span class="keywordtype">bool</span> GetBoundingBox(</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; <a class="code" href="../../d1/d17/class_o_n___bounding_box.html">ON_BoundingBox</a>&amp; bbox,</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; <span class="keywordtype">int</span> bGrowBox = <span class="keyword">false</span></div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; ) <span class="keyword">const</span>;</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; <span class="comment">/*</span></div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160;<span class="comment"> Get tight bounding box.</span></div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160;<span class="comment"> tight_bbox - [in/out] tight bounding box</span></div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160;<span class="comment"> bGrowBox -[in] (default=false) </span></div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160;<span class="comment"> If true and the input tight_bbox is valid, then returned</span></div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160;<span class="comment"> tight_bbox is the union of the input tight_bbox and the </span></div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160;<span class="comment"> line&#39;s tight bounding box.</span></div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160;<span class="comment"> xform -[in] (default=nullptr)</span></div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160;<span class="comment"> If not nullptr, the tight bounding box of the transformed</span></div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160;<span class="comment"> line is calculated. The line is not modified.</span></div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160;<span class="comment"> True if a valid tight_bbox is returned.</span></div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160; <span class="keywordtype">bool</span> GetTightBoundingBox( </div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160; <a class="code" href="../../d1/d17/class_o_n___bounding_box.html">ON_BoundingBox</a>&amp; tight_bbox, </div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160; <span class="keywordtype">bool</span> bGrowBox = <span class="keyword">false</span>,</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d3/d13/class_o_n___xform.html">ON_Xform</a>* xform = <span class="keyword">nullptr</span></div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160; ) <span class="keyword">const</span>;</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160;</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160;<span class="comment"> Get a plane that contains the line.</span></div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160;<span class="comment"> plane - [out] a plane that contains the line. The orgin</span></div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160;<span class="comment"> of the plane is at the start of the line. The distance</span></div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160;<span class="comment"> from the end of the line to the plane is &lt;= tolerance.</span></div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160;<span class="comment"> If possible a plane parallel to the world xy, yz or zx</span></div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160;<span class="comment"> plane is returned.</span></div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160;<span class="comment"> tolerance - [in]</span></div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160;<span class="comment"> true if a coordinate of the line&#39;s direction vector is</span></div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160;<span class="comment"> larger than tolerance.</span></div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160; <span class="keywordtype">bool</span> InPlane( <a class="code" href="../../d4/d48/class_o_n___plane.html">ON_Plane</a>&amp; plane, <span class="keywordtype">double</span> tolerance = 0.0 ) <span class="keyword">const</span>;</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; <span class="comment">// Returns:</span></div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160; <span class="comment">// Length of line</span></div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160; <span class="keywordtype">double</span> Length() <span class="keyword">const</span>;</div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160;</div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160; <span class="comment">// Returns:</span></div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160; <span class="comment">// direction vector = line.to - line.from</span></div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160; <span class="comment">// See Also:</span></div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160; <span class="comment">// ON_Line::Tangent</span></div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160; <a class="code" href="../../d5/dae/class_o_n__3d_vector.html">ON_3dVector</a> Direction() <span class="keyword">const</span>;</div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160;</div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160; <span class="comment">// Returns:</span></div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160; <span class="comment">// Unit tangent vector.</span></div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160; <span class="comment">// See Also:</span></div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160; <span class="comment">// ON_Line::Direction</span></div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160; <a class="code" href="../../d5/dae/class_o_n__3d_vector.html">ON_3dVector</a> Tangent() <span class="keyword">const</span>;</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; <span class="comment">/*</span></div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160;<span class="comment"> Evaluate point on (infinite) line.</span></div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160;<span class="comment"> t - [in] evaluation parameter. t=0 returns line.from</span></div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160;<span class="comment"> and t=1 returns line.to.</span></div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160;<span class="comment"> (1-t)*line.from + t*line.to.</span></div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160;<span class="comment"> See Also:</span></div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160;<span class="comment"> ON_Line::Direction</span></div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160;<span class="comment"> ON_Line::Tangent</span></div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160; <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a> PointAt( </div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160; <span class="keywordtype">double</span> t </div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160; ) <span class="keyword">const</span>;</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; <span class="comment">/*</span></div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>&#160;<span class="comment"> Find the point on the (infinite) line that is</span></div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160;<span class="comment"> closest to the test_point.</span></div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>&#160;<span class="comment"> test_point - [in]</span></div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span>&#160;<span class="comment"> t - [out] line.PointAt(*t) is the point on the line </span></div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>&#160;<span class="comment"> that is closest to test_point.</span></div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span>&#160;<span class="comment"> true if successful.</span></div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160; <span class="keywordtype">bool</span> ClosestPointTo( </div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; test_point, </div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160; <span class="keywordtype">double</span>* t</div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160; ) <span class="keyword">const</span>;</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="comment">/*</span></div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>&#160;<span class="comment"> Find the point on the (infinite) line that is</span></div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160;<span class="comment"> closest to the test_point.</span></div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160;<span class="comment"> test_point - [in]</span></div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span>&#160;<span class="comment"> The point on the line that is closest to test_point.</span></div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span>&#160; <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a> ClosestPointTo( </div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; test_point</div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span>&#160; ) <span class="keyword">const</span>;</div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span>&#160;</div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>&#160;<span class="comment"> Find the point on the (infinite) line that is</span></div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span>&#160;<span class="comment"> closest to the test_point.</span></div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span>&#160;<span class="comment"> test_point - [in]</span></div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span>&#160;<span class="comment"> distance from the point on the line that is closest</span></div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span>&#160;<span class="comment"> to test_point.</span></div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span>&#160;<span class="comment"> See Also:</span></div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span>&#160;<span class="comment"> ON_3dPoint::DistanceTo</span></div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span>&#160;<span class="comment"> ON_Line::ClosestPointTo</span></div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span>&#160; <span class="keywordtype">double</span> DistanceTo( <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a> test_point ) <span class="keyword">const</span>;</div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span>&#160;</div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span>&#160;</div><div class="line"><a name="l00209"></a><span class="lineno"> 209</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00210"></a><span class="lineno"> 210</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00211"></a><span class="lineno"> 211</span>&#160;<span class="comment"> Finds the shortest distance between the line as a finite</span></div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span>&#160;<span class="comment"> chord and the other object.</span></div><div class="line"><a name="l00213"></a><span class="lineno"> 213</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00214"></a><span class="lineno"> 214</span>&#160;<span class="comment"> P - [in]</span></div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span>&#160;<span class="comment"> L - [in] (another finite chord)</span></div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span>&#160;<span class="comment"> A value d such that if Q is any point on </span></div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span>&#160;<span class="comment"> this line and P is any point on the other object, </span></div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span>&#160;<span class="comment"> then d &lt;= Q.DistanceTo(P).</span></div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span>&#160; <span class="keywordtype">double</span> MinimumDistanceTo( <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; P ) <span class="keyword">const</span>;</div><div class="line"><a name="l00222"></a><span class="lineno"> 222</span>&#160; <span class="keywordtype">double</span> MinimumDistanceTo( <span class="keyword">const</span> <a class="code" href="../../d4/d6f/class_o_n___line.html">ON_Line</a>&amp; L ) <span class="keyword">const</span>;</div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span>&#160;</div><div class="line"><a name="l00224"></a><span class="lineno"> 224</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00226"></a><span class="lineno"> 226</span>&#160;<span class="comment"> Finds the longest distance between the line as a finite</span></div><div class="line"><a name="l00227"></a><span class="lineno"> 227</span>&#160;<span class="comment"> chord and the other object.</span></div><div class="line"><a name="l00228"></a><span class="lineno"> 228</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00229"></a><span class="lineno"> 229</span>&#160;<span class="comment"> P - [in]</span></div><div class="line"><a name="l00230"></a><span class="lineno"> 230</span>&#160;<span class="comment"> L - [in] (another finite chord)</span></div><div class="line"><a name="l00231"></a><span class="lineno"> 231</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00232"></a><span class="lineno"> 232</span>&#160;<span class="comment"> A value d such that if Q is any point on this line and P is any</span></div><div class="line"><a name="l00233"></a><span class="lineno"> 233</span>&#160;<span class="comment"> point on the other object, then d &gt;= Q.DistanceTo(P).</span></div><div class="line"><a name="l00234"></a><span class="lineno"> 234</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span>&#160; <span class="keywordtype">double</span> MaximumDistanceTo( <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; P ) <span class="keyword">const</span>;</div><div class="line"><a name="l00236"></a><span class="lineno"> 236</span>&#160; <span class="keywordtype">double</span> MaximumDistanceTo( <span class="keyword">const</span> <a class="code" href="../../d4/d6f/class_o_n___line.html">ON_Line</a>&amp; other ) <span class="keyword">const</span>;</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="l00239"></a><span class="lineno"> 239</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00240"></a><span class="lineno"> 240</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00241"></a><span class="lineno"> 241</span>&#160;<span class="comment"> Quickly determine if the shortest distance from</span></div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span>&#160;<span class="comment"> this line to the other object is greater than d.</span></div><div class="line"><a name="l00243"></a><span class="lineno"> 243</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00244"></a><span class="lineno"> 244</span>&#160;<span class="comment"> d - [in] distance (&gt; 0.0)</span></div><div class="line"><a name="l00245"></a><span class="lineno"> 245</span>&#160;<span class="comment"> P - [in] </span></div><div class="line"><a name="l00246"></a><span class="lineno"> 246</span>&#160;<span class="comment"> L - [in] </span></div><div class="line"><a name="l00247"></a><span class="lineno"> 247</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00248"></a><span class="lineno"> 248</span>&#160;<span class="comment"> True if if the shortest distance from this line</span></div><div class="line"><a name="l00249"></a><span class="lineno"> 249</span>&#160;<span class="comment"> to the other object is greater than d.</span></div><div class="line"><a name="l00250"></a><span class="lineno"> 250</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00251"></a><span class="lineno"> 251</span>&#160; <span class="keywordtype">bool</span> IsFartherThan( <span class="keywordtype">double</span> d, <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; P ) <span class="keyword">const</span>;</div><div class="line"><a name="l00252"></a><span class="lineno"> 252</span>&#160; <span class="keywordtype">bool</span> IsFartherThan( <span class="keywordtype">double</span> d, <span class="keyword">const</span> <a class="code" href="../../d4/d6f/class_o_n___line.html">ON_Line</a>&amp; L ) <span class="keyword">const</span>;</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="l00255"></a><span class="lineno"> 255</span>&#160; <span class="comment">// For intersections see ON_Intersect();</span></div><div class="line"><a name="l00256"></a><span class="lineno"> 256</span>&#160;</div><div class="line"><a name="l00257"></a><span class="lineno"> 257</span>&#160; <span class="comment">// Description:</span></div><div class="line"><a name="l00258"></a><span class="lineno"> 258</span>&#160; <span class="comment">// Reverse line by swapping from and to.</span></div><div class="line"><a name="l00259"></a><span class="lineno"> 259</span>&#160; <span class="keywordtype">void</span> Reverse();</div><div class="line"><a name="l00260"></a><span class="lineno"> 260</span>&#160;</div><div class="line"><a name="l00261"></a><span class="lineno"> 261</span>&#160; <span class="keywordtype">bool</span> Transform( </div><div class="line"><a name="l00262"></a><span class="lineno"> 262</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d3/d13/class_o_n___xform.html">ON_Xform</a>&amp; xform</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;</div><div class="line"><a name="l00265"></a><span class="lineno"> 265</span>&#160; <span class="comment">// rotate line about a point and axis</span></div><div class="line"><a name="l00266"></a><span class="lineno"> 266</span>&#160; <span class="keywordtype">bool</span> Rotate(</div><div class="line"><a name="l00267"></a><span class="lineno"> 267</span>&#160; <span class="keywordtype">double</span> sin_angle,</div><div class="line"><a name="l00268"></a><span class="lineno"> 268</span>&#160; <span class="keywordtype">double</span> cos_angle,</div><div class="line"><a name="l00269"></a><span class="lineno"> 269</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d5/dae/class_o_n__3d_vector.html">ON_3dVector</a>&amp; axis_of_rotation,</div><div class="line"><a name="l00270"></a><span class="lineno"> 270</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; center_of_rotation</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="l00273"></a><span class="lineno"> 273</span>&#160; <span class="keywordtype">bool</span> Rotate(</div><div class="line"><a name="l00274"></a><span class="lineno"> 274</span>&#160; <span class="keywordtype">double</span> angle_in_radians,</div><div class="line"><a name="l00275"></a><span class="lineno"><a class="line" href="../../d4/d6f/class_o_n___line.html#a21f4e17d22dc955917cd54c1e9b2b689"> 275</a></span>&#160; <span class="keyword">const</span> <a class="code" href="../../d5/dae/class_o_n__3d_vector.html">ON_3dVector</a>&amp; axis_of_rotation,</div><div class="line"><a name="l00276"></a><span class="lineno"><a class="line" href="../../d4/d6f/class_o_n___line.html#a08d629ff2e552d94faea87989daf8db0"> 276</a></span>&#160; <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; center_of_rotation</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="l00279"></a><span class="lineno"> 279</span>&#160; <span class="keywordtype">bool</span> Translate(</div><div class="line"><a name="l00280"></a><span class="lineno"> 280</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d5/dae/class_o_n__3d_vector.html">ON_3dVector</a>&amp; delta</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;</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;<span class="keyword">public</span>:</div><div class="line"><a name="l00285"></a><span class="lineno"> 285</span>&#160; <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a> from; <span class="comment">// start point</span></div><div class="line"><a name="l00286"></a><span class="lineno"> 286</span>&#160; <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a> to; <span class="comment">// end point</span></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;</div><div class="line"><a name="l00289"></a><span class="lineno"> 289</span>&#160;<span class="preprocessor">#if defined(ON_DLL_TEMPLATE)</span></div><div class="line"><a name="l00290"></a><span class="lineno"> 290</span>&#160;ON_DLL_TEMPLATE <span class="keyword">template</span> <span class="keyword">class </span>ON_CLASS <a class="code" href="../../dc/dfe/class_o_n___simple_array.html">ON_SimpleArray&lt;ON_Line&gt;</a>;</div><div class="line"><a name="l00291"></a><span class="lineno"> 291</span>&#160;<span class="preprocessor">#endif</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="comment">/*</span></div><div class="line"><a name="l00294"></a><span class="lineno"> 294</span>&#160;<span class="comment">Returns:</span></div><div class="line"><a name="l00295"></a><span class="lineno"> 295</span>&#160;<span class="comment"> True if a and be are identical and no coordinate is a nan.</span></div><div class="line"><a name="l00296"></a><span class="lineno"> 296</span>&#160;<span class="comment">*/</span></div><div class="line"><a name="l00297"></a><span class="lineno"> 297</span>&#160;ON_DECL</div><div class="line"><a name="l00298"></a><span class="lineno"> 298</span>&#160;<span class="keywordtype">bool</span> operator==(<span class="keyword">const</span> <a class="code" href="../../d4/d6f/class_o_n___line.html">ON_Line</a>&amp; a, <span class="keyword">const</span> <a class="code" href="../../d4/d6f/class_o_n___line.html">ON_Line</a>&amp; b);</div><div class="line"><a name="l00299"></a><span class="lineno"> 299</span>&#160;</div><div class="line"><a name="l00300"></a><span class="lineno"> 300</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00301"></a><span class="lineno"><a class="line" href="../../d4/df9/class_o_n___triangle.html"> 301</a></span>&#160;<span class="comment">Returns:</span></div><div class="line"><a name="l00302"></a><span class="lineno"> 302</span>&#160;<span class="comment"> True if a and be are not identical.</span></div><div class="line"><a name="l00303"></a><span class="lineno"> 303</span>&#160;<span class="comment">Remarks:</span></div><div class="line"><a name="l00304"></a><span class="lineno"> 304</span>&#160;<span class="comment"> If a nan is involved in every coordinate compare,</span></div><div class="line"><a name="l00305"></a><span class="lineno"><a class="line" href="../../d4/df9/class_o_n___triangle.html#a539b325f064f60664ca7250035b99c68"> 305</a></span>&#160;<span class="comment"> the result will be false.</span></div><div class="line"><a name="l00306"></a><span class="lineno"><a class="line" href="../../d4/df9/class_o_n___triangle.html#ab4245632c9b586075706cfcdc851f86d"> 306</a></span>&#160;<span class="comment">*/</span></div><div class="line"><a name="l00307"></a><span class="lineno"><a class="line" href="../../d4/df9/class_o_n___triangle.html#a3493f70880a69e59ef3785baec1b1443"> 307</a></span>&#160;ON_DECL</div><div class="line"><a name="l00308"></a><span class="lineno"> 308</span>&#160;<span class="keywordtype">bool</span> operator!=(<span class="keyword">const</span> <a class="code" href="../../d4/d6f/class_o_n___line.html">ON_Line</a>&amp; a, <span class="keyword">const</span> <a class="code" href="../../d4/d6f/class_o_n___line.html">ON_Line</a>&amp; b);</div><div class="line"><a name="l00309"></a><span class="lineno"> 309</span>&#160;</div><div class="line"><a name="l00310"></a><span class="lineno"> 310</span>&#160;</div><div class="line"><a name="l00311"></a><span class="lineno"> 311</span>&#160;</div><div class="line"><a name="l00312"></a><span class="lineno"> 312</span>&#160;<span class="keyword">class </span>ON_CLASS <a class="code" href="../../d4/df9/class_o_n___triangle.html">ON_Triangle</a></div><div class="line"><a name="l00313"></a><span class="lineno"> 313</span>&#160;{</div><div class="line"><a name="l00314"></a><span class="lineno"> 314</span>&#160;<span class="keyword">public</span>:</div><div class="line"><a name="l00315"></a><span class="lineno"> 315</span>&#160;</div><div class="line"><a name="l00316"></a><span class="lineno"> 316</span>&#160; <span class="keyword">static</span> <span class="keyword">const</span> <a class="code" href="../../d4/df9/class_o_n___triangle.html">ON_Triangle</a> ZeroTriangle; <span class="comment">// {ON_3dPoint::Origin, ON_3dPoint::Origin, ON_3dPoint::Origin}</span></div><div class="line"><a name="l00317"></a><span class="lineno"> 317</span>&#160; <span class="keyword">static</span> <span class="keyword">const</span> <a class="code" href="../../d4/df9/class_o_n___triangle.html">ON_Triangle</a> UnsetTriangle; <span class="comment">// {ON_3dPoint::UnsetPoint, ON_3dPoint::UnsetPoint, ON_3dPoint::UnsetPoint}</span></div><div class="line"><a name="l00318"></a><span class="lineno"> 318</span>&#160; <span class="keyword">static</span> <span class="keyword">const</span> <a class="code" href="../../d4/df9/class_o_n___triangle.html">ON_Triangle</a> NanTriangle; <span class="comment">// {ON_3dPoint::NanPoint, ON_3dPoint::NanPoint, ON_3dPoint::NanPoint}</span></div><div class="line"><a name="l00319"></a><span class="lineno"> 319</span>&#160; </div><div class="line"><a name="l00320"></a><span class="lineno"> 320</span>&#160; <a class="code" href="../../d4/df9/class_o_n___triangle.html">ON_Triangle</a>() = <span class="keywordflow">default</span>; <span class="comment">// Default constructor is uninitialized</span></div><div class="line"><a name="l00321"></a><span class="lineno"> 321</span>&#160; <a class="code" href="../../d4/df9/class_o_n___triangle.html">ON_Triangle</a>(<span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a> vertices[3]);</div><div class="line"><a name="l00322"></a><span class="lineno"> 322</span>&#160; <a class="code" href="../../d4/df9/class_o_n___triangle.html">ON_Triangle</a>(<span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; a, <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; b, <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; c);</div><div class="line"><a name="l00323"></a><span class="lineno"> 323</span>&#160; <a class="code" href="../../d4/df9/class_o_n___triangle.html">ON_Triangle</a>(<span class="keywordtype">double</span> x); <span class="comment">// Allows Triangle(0.0) ZeroTriangle </span></div><div class="line"><a name="l00324"></a><span class="lineno"> 324</span>&#160;</div><div class="line"><a name="l00325"></a><span class="lineno"> 325</span>&#160; <a class="code" href="../../d4/df9/class_o_n___triangle.html">ON_Triangle</a>(<span class="keyword">const</span> <a class="code" href="../../d4/df9/class_o_n___triangle.html">ON_Triangle</a>&amp; tri) = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00326"></a><span class="lineno"> 326</span>&#160; <a class="code" href="../../d4/df9/class_o_n___triangle.html">ON_Triangle</a>&amp; operator=(<span class="keyword">const</span> <a class="code" href="../../d4/df9/class_o_n___triangle.html">ON_Triangle</a>&amp; tri) = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00327"></a><span class="lineno"> 327</span>&#160; ~<a class="code" href="../../d4/df9/class_o_n___triangle.html">ON_Triangle</a>() = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00328"></a><span class="lineno"> 328</span>&#160;</div><div class="line"><a name="l00329"></a><span class="lineno"> 329</span>&#160; <span class="keyword">operator</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>*();</div><div class="line"><a name="l00330"></a><span class="lineno"> 330</span>&#160; <span class="keyword">operator</span> <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>*() <span class="keyword">const</span>;</div><div class="line"><a name="l00331"></a><span class="lineno"> 331</span>&#160;</div><div class="line"><a name="l00332"></a><span class="lineno"> 332</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00333"></a><span class="lineno"> 333</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00334"></a><span class="lineno"> 334</span>&#160;<span class="comment"> True if m_V[i].IsValid() for all i</span></div><div class="line"><a name="l00335"></a><span class="lineno"> 335</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00336"></a><span class="lineno"> 336</span>&#160; <span class="keywordtype">bool</span> IsValid() <span class="keyword">const</span>;</div><div class="line"><a name="l00337"></a><span class="lineno"> 337</span>&#160;</div><div class="line"><a name="l00338"></a><span class="lineno"> 338</span>&#160; <span class="comment">// Triangle[i] = Triangle.m_V[i] </span></div><div class="line"><a name="l00339"></a><span class="lineno"> 339</span>&#160; <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; operator[](<span class="keywordtype">int</span>);</div><div class="line"><a name="l00340"></a><span class="lineno"> 340</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; operator[](<span class="keywordtype">int</span>) <span class="keyword">const</span>;</div><div class="line"><a name="l00341"></a><span class="lineno"> 341</span>&#160;</div><div class="line"><a name="l00342"></a><span class="lineno"> 342</span>&#160;</div><div class="line"><a name="l00343"></a><span class="lineno"> 343</span>&#160; <span class="comment">// Description:</span></div><div class="line"><a name="l00344"></a><span class="lineno"> 344</span>&#160; <span class="comment">// Create a Triangle from three points.</span></div><div class="line"><a name="l00345"></a><span class="lineno"> 345</span>&#160; <span class="comment">// Parameters:</span></div><div class="line"><a name="l00346"></a><span class="lineno"> 346</span>&#160; <span class="comment">// vertices - [in] vertices</span></div><div class="line"><a name="l00347"></a><span class="lineno"> 347</span>&#160; <span class="keywordtype">void</span> Create(<span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a> vertices[3]);</div><div class="line"><a name="l00348"></a><span class="lineno"> 348</span>&#160;</div><div class="line"><a name="l00349"></a><span class="lineno"> 349</span>&#160; <span class="comment">// Description:</span></div><div class="line"><a name="l00350"></a><span class="lineno"> 350</span>&#160; <span class="comment">// Create a Triangle from three points.</span></div><div class="line"><a name="l00351"></a><span class="lineno"> 351</span>&#160; <span class="comment">// Parameters:</span></div><div class="line"><a name="l00352"></a><span class="lineno"> 352</span>&#160; <span class="comment">// a,b,c - [in] vertices</span></div><div class="line"><a name="l00353"></a><span class="lineno"> 353</span>&#160; <span class="keywordtype">void</span> Create(<span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; a, <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; b, <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; c);</div><div class="line"><a name="l00354"></a><span class="lineno"> 354</span>&#160;</div><div class="line"><a name="l00355"></a><span class="lineno"> 355</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00356"></a><span class="lineno"> 356</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00357"></a><span class="lineno"> 357</span>&#160;<span class="comment"> Get Triangles 3d axis aligned bounding box.</span></div><div class="line"><a name="l00358"></a><span class="lineno"> 358</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00359"></a><span class="lineno"> 359</span>&#160;<span class="comment"> 3d bounding box.</span></div><div class="line"><a name="l00360"></a><span class="lineno"> 360</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00361"></a><span class="lineno"> 361</span>&#160; <a class="code" href="../../d1/d17/class_o_n___bounding_box.html">ON_BoundingBox</a> BoundingBox() <span class="keyword">const</span>;</div><div class="line"><a name="l00362"></a><span class="lineno"> 362</span>&#160;</div><div class="line"><a name="l00363"></a><span class="lineno"> 363</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00364"></a><span class="lineno"> 364</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00365"></a><span class="lineno"> 365</span>&#160;<span class="comment"> Get line&#39;s 3d axis aligned bounding box or the</span></div><div class="line"><a name="l00366"></a><span class="lineno"> 366</span>&#160;<span class="comment"> union of the input box with the object&#39;s bounding box.</span></div><div class="line"><a name="l00367"></a><span class="lineno"> 367</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00368"></a><span class="lineno"> 368</span>&#160;<span class="comment"> bbox - [in/out] 3d axis aligned bounding box</span></div><div class="line"><a name="l00369"></a><span class="lineno"> 369</span>&#160;<span class="comment"> bGrowBox - [in] (default=false)</span></div><div class="line"><a name="l00370"></a><span class="lineno"> 370</span>&#160;<span class="comment"> If true, then the union of the input bbox and the</span></div><div class="line"><a name="l00371"></a><span class="lineno"> 371</span>&#160;<span class="comment"> object&#39;s bounding box is returned in bbox.</span></div><div class="line"><a name="l00372"></a><span class="lineno"> 372</span>&#160;<span class="comment"> If false, the object&#39;s bounding box is returned in bbox.</span></div><div class="line"><a name="l00373"></a><span class="lineno"> 373</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00374"></a><span class="lineno"> 374</span>&#160;<span class="comment"> true if object has bounding box and calculation was successful.</span></div><div class="line"><a name="l00375"></a><span class="lineno"> 375</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00376"></a><span class="lineno"> 376</span>&#160; <span class="keywordtype">bool</span> GetBoundingBox(</div><div class="line"><a name="l00377"></a><span class="lineno"> 377</span>&#160; <a class="code" href="../../d1/d17/class_o_n___bounding_box.html">ON_BoundingBox</a>&amp; bbox,</div><div class="line"><a name="l00378"></a><span class="lineno"> 378</span>&#160; <span class="keywordtype">int</span> bGrowBox = <span class="keyword">false</span></div><div class="line"><a name="l00379"></a><span class="lineno"> 379</span>&#160; ) <span class="keyword">const</span>;</div><div class="line"><a name="l00380"></a><span class="lineno"> 380</span>&#160;</div><div class="line"><a name="l00381"></a><span class="lineno"> 381</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00382"></a><span class="lineno"> 382</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00383"></a><span class="lineno"> 383</span>&#160;<span class="comment"> Get tight bounding box with respect to a given frame</span></div><div class="line"><a name="l00384"></a><span class="lineno"> 384</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00385"></a><span class="lineno"> 385</span>&#160;<span class="comment"> tight_bbox - [in/out] tight bounding box</span></div><div class="line"><a name="l00386"></a><span class="lineno"> 386</span>&#160;<span class="comment"> bGrowBox -[in] (default=false)</span></div><div class="line"><a name="l00387"></a><span class="lineno"> 387</span>&#160;<span class="comment"> If true and the input tight_bbox is valid, then returned</span></div><div class="line"><a name="l00388"></a><span class="lineno"> 388</span>&#160;<span class="comment"> tight_bbox is the union of the input tight_bbox and the</span></div><div class="line"><a name="l00389"></a><span class="lineno"> 389</span>&#160;<span class="comment"> line&#39;s tight bounding box.</span></div><div class="line"><a name="l00390"></a><span class="lineno"> 390</span>&#160;<span class="comment"> xform -[in] (default=nullptr)</span></div><div class="line"><a name="l00391"></a><span class="lineno"> 391</span>&#160;<span class="comment"> If not nullptr, the tight bounding box of the transformed</span></div><div class="line"><a name="l00392"></a><span class="lineno"> 392</span>&#160;<span class="comment"> triangle is calculated. The triangle is not modified.</span></div><div class="line"><a name="l00393"></a><span class="lineno"> 393</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00394"></a><span class="lineno"> 394</span>&#160;<span class="comment"> True if a valid tight_bbox is returned.</span></div><div class="line"><a name="l00395"></a><span class="lineno"> 395</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00396"></a><span class="lineno"> 396</span>&#160; <span class="keywordtype">bool</span> GetTightBoundingBox(</div><div class="line"><a name="l00397"></a><span class="lineno"> 397</span>&#160; <a class="code" href="../../d1/d17/class_o_n___bounding_box.html">ON_BoundingBox</a>&amp; tight_bbox,</div><div class="line"><a name="l00398"></a><span class="lineno"> 398</span>&#160; <span class="keywordtype">bool</span> bGrowBox = <span class="keyword">false</span>,</div><div class="line"><a name="l00399"></a><span class="lineno"> 399</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d3/d13/class_o_n___xform.html">ON_Xform</a>* xform = <span class="keyword">nullptr</span></div><div class="line"><a name="l00400"></a><span class="lineno"> 400</span>&#160; ) <span class="keyword">const</span>;</div><div class="line"><a name="l00401"></a><span class="lineno"> 401</span>&#160;</div><div class="line"><a name="l00402"></a><span class="lineno"> 402</span>&#160; <span class="comment">// Returns:</span></div><div class="line"><a name="l00403"></a><span class="lineno"> 403</span>&#160; <span class="comment">// Edge opposite m_V[i]</span></div><div class="line"><a name="l00404"></a><span class="lineno"> 404</span>&#160; <span class="comment">// Specifically, </span></div><div class="line"><a name="l00405"></a><span class="lineno"> 405</span>&#160; <span class="comment">// ON_Line( m_V[(i+1)%3 ], m_V[(i+2)%3 ] )</span></div><div class="line"><a name="l00406"></a><span class="lineno"> 406</span>&#160; <a class="code" href="../../d4/d6f/class_o_n___line.html">ON_Line</a> Edge(<span class="keywordtype">int</span> i) <span class="keyword">const</span>;</div><div class="line"><a name="l00407"></a><span class="lineno"> 407</span>&#160;</div><div class="line"><a name="l00408"></a><span class="lineno"> 408</span>&#160; <span class="comment">// Returns:</span></div><div class="line"><a name="l00409"></a><span class="lineno"> 409</span>&#160; <span class="comment">// true if Area()&lt; tol</span></div><div class="line"><a name="l00410"></a><span class="lineno"> 410</span>&#160; <span class="comment">// Note:</span></div><div class="line"><a name="l00411"></a><span class="lineno"> 411</span>&#160; <span class="comment">// Recall Area = .5* base * height. So this degeneracy tests for </span></div><div class="line"><a name="l00412"></a><span class="lineno"> 412</span>&#160; <span class="comment">// a combination long enough and high enough.</span></div><div class="line"><a name="l00413"></a><span class="lineno"> 413</span>&#160; <span class="comment">// See Also:</span></div><div class="line"><a name="l00414"></a><span class="lineno"> 414</span>&#160; <span class="comment">// ON_Triangle::Area()</span></div><div class="line"><a name="l00415"></a><span class="lineno"> 415</span>&#160; <span class="keywordtype">bool</span> IsDegenerate(<span class="keywordtype">double</span> tol = ON_ZERO_TOLERANCE) <span class="keyword">const</span>;</div><div class="line"><a name="l00416"></a><span class="lineno"> 416</span>&#160;</div><div class="line"><a name="l00417"></a><span class="lineno"> 417</span>&#160; <span class="comment">// Returns:</span></div><div class="line"><a name="l00418"></a><span class="lineno"> 418</span>&#160; <span class="comment">// Area of triangle</span></div><div class="line"><a name="l00419"></a><span class="lineno"> 419</span>&#160; <span class="keywordtype">double</span> Area() <span class="keyword">const</span>;</div><div class="line"><a name="l00420"></a><span class="lineno"> 420</span>&#160;</div><div class="line"><a name="l00421"></a><span class="lineno"> 421</span>&#160;</div><div class="line"><a name="l00422"></a><span class="lineno"> 422</span>&#160; <span class="comment">// Returns:</span></div><div class="line"><a name="l00423"></a><span class="lineno"> 423</span>&#160; <span class="comment">// N = ( b-a) X ( c-a)</span></div><div class="line"><a name="l00424"></a><span class="lineno"> 424</span>&#160; <span class="comment">// where a,b,c are the verticies </span></div><div class="line"><a name="l00425"></a><span class="lineno"> 425</span>&#160; <span class="comment">// See Also:</span></div><div class="line"><a name="l00426"></a><span class="lineno"> 426</span>&#160; <span class="comment">// ON_Triangle UnitNormal()</span></div><div class="line"><a name="l00427"></a><span class="lineno"> 427</span>&#160; <a class="code" href="../../d5/dae/class_o_n__3d_vector.html">ON_3dVector</a> Normal() <span class="keyword">const</span>;</div><div class="line"><a name="l00428"></a><span class="lineno"> 428</span>&#160;</div><div class="line"><a name="l00429"></a><span class="lineno"> 429</span>&#160; <span class="comment">// Returns:</span></div><div class="line"><a name="l00430"></a><span class="lineno"> 430</span>&#160; <span class="comment">// Normal().Unitize()</span></div><div class="line"><a name="l00431"></a><span class="lineno"> 431</span>&#160; <span class="comment">// Notes:</span></div><div class="line"><a name="l00432"></a><span class="lineno"> 432</span>&#160; <span class="comment">// Ensure !IsDegenerate() to gaurentee that UnitNormal().Length()==1</span></div><div class="line"><a name="l00433"></a><span class="lineno"> 433</span>&#160; <span class="comment">// and the result is not just a bunch of noise. Can return zero vector </span></div><div class="line"><a name="l00434"></a><span class="lineno"> 434</span>&#160; <span class="comment">// in some degenerate cases.</span></div><div class="line"><a name="l00435"></a><span class="lineno"> 435</span>&#160; <a class="code" href="../../d5/dae/class_o_n__3d_vector.html">ON_3dVector</a> UnitNormal() <span class="keyword">const</span>;</div><div class="line"><a name="l00436"></a><span class="lineno"> 436</span>&#160;</div><div class="line"><a name="l00437"></a><span class="lineno"> 437</span>&#160; <span class="comment">// Returns:</span></div><div class="line"><a name="l00438"></a><span class="lineno"> 438</span>&#160; <span class="comment">// Plane containing Triangle with normal given by UnitNormal().</span></div><div class="line"><a name="l00439"></a><span class="lineno"> 439</span>&#160; <span class="comment">// Notes:</span></div><div class="line"><a name="l00440"></a><span class="lineno"> 440</span>&#160; <span class="comment">// Ensure !IsDegenerate() to gaurentee meaningful result</span></div><div class="line"><a name="l00441"></a><span class="lineno"> 441</span>&#160; <a class="code" href="../../dd/d89/class_o_n___plane_equation.html">ON_PlaneEquation</a> PlaneEquation() <span class="keyword">const</span>;</div><div class="line"><a name="l00442"></a><span class="lineno"> 442</span>&#160;</div><div class="line"><a name="l00443"></a><span class="lineno"> 443</span>&#160;</div><div class="line"><a name="l00444"></a><span class="lineno"> 444</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00445"></a><span class="lineno"> 445</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00446"></a><span class="lineno"> 446</span>&#160;<span class="comment"> Evaluate point on triangle.</span></div><div class="line"><a name="l00447"></a><span class="lineno"> 447</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00448"></a><span class="lineno"> 448</span>&#160;<span class="comment"> s1, s2 - [in] evaluation parameter. </span></div><div class="line"><a name="l00449"></a><span class="lineno"> 449</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00450"></a><span class="lineno"> 450</span>&#160;<span class="comment"> (1-s1-s2)* m_V[0] + s1*m_V[1] + s2*m_V[2]</span></div><div class="line"><a name="l00451"></a><span class="lineno"> 451</span>&#160;<span class="comment"> Notes:</span></div><div class="line"><a name="l00452"></a><span class="lineno"> 452</span>&#160;<span class="comment"> Point is in the triangle iff s1&gt;=0, s2&gt;=0 and s1 + s2&lt;=1.</span></div><div class="line"><a name="l00453"></a><span class="lineno"> 453</span>&#160;<span class="comment"> Other values produce points on the plane of the triangle.</span></div><div class="line"><a name="l00454"></a><span class="lineno"> 454</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00455"></a><span class="lineno"> 455</span>&#160; <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a> PointAt(</div><div class="line"><a name="l00456"></a><span class="lineno"> 456</span>&#160; <span class="keywordtype">double</span> s1, <span class="keywordtype">double</span> s2</div><div class="line"><a name="l00457"></a><span class="lineno"> 457</span>&#160; ) <span class="keyword">const</span>;</div><div class="line"><a name="l00458"></a><span class="lineno"> 458</span>&#160;</div><div class="line"><a name="l00459"></a><span class="lineno"> 459</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00460"></a><span class="lineno"> 460</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00461"></a><span class="lineno"> 461</span>&#160;<span class="comment"> Find the point on the triangle that is</span></div><div class="line"><a name="l00462"></a><span class="lineno"> 462</span>&#160;<span class="comment"> closest to the test_point.</span></div><div class="line"><a name="l00463"></a><span class="lineno"> 463</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00464"></a><span class="lineno"> 464</span>&#160;<span class="comment"> test_point - [in]</span></div><div class="line"><a name="l00465"></a><span class="lineno"> 465</span>&#160;<span class="comment"> s1, s2 - [out] PointAt( *s1, *s2) is the point on the</span></div><div class="line"><a name="l00466"></a><span class="lineno"> 466</span>&#160;<span class="comment"> triangle closest to test_point.</span></div><div class="line"><a name="l00467"></a><span class="lineno"> 467</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00468"></a><span class="lineno"> 468</span>&#160;<span class="comment"> true if successful.</span></div><div class="line"><a name="l00469"></a><span class="lineno"> 469</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00470"></a><span class="lineno"> 470</span>&#160; <span class="keywordtype">bool</span> ClosestPointTo(</div><div class="line"><a name="l00471"></a><span class="lineno"> 471</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; test_point,</div><div class="line"><a name="l00472"></a><span class="lineno"> 472</span>&#160; <span class="keywordtype">double</span>* s1, <span class="keywordtype">double</span> *s2</div><div class="line"><a name="l00473"></a><span class="lineno"> 473</span>&#160; ) <span class="keyword">const</span>;</div><div class="line"><a name="l00474"></a><span class="lineno"> 474</span>&#160;</div><div class="line"><a name="l00475"></a><span class="lineno"> 475</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00476"></a><span class="lineno"> 476</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00477"></a><span class="lineno"> 477</span>&#160;<span class="comment"> Find the point on the triangle that is</span></div><div class="line"><a name="l00478"></a><span class="lineno"> 478</span>&#160;<span class="comment"> closest to the test_point.</span></div><div class="line"><a name="l00479"></a><span class="lineno"> 479</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00480"></a><span class="lineno"> 480</span>&#160;<span class="comment"> test_point - [in]</span></div><div class="line"><a name="l00481"></a><span class="lineno"> 481</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00482"></a><span class="lineno"> 482</span>&#160;<span class="comment"> The point on the line that is closest to test_point.</span></div><div class="line"><a name="l00483"></a><span class="lineno"> 483</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00484"></a><span class="lineno"> 484</span>&#160; <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a> ClosestPointTo(</div><div class="line"><a name="l00485"></a><span class="lineno"> 485</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; test_point</div><div class="line"><a name="l00486"></a><span class="lineno"> 486</span>&#160; ) <span class="keyword">const</span>;</div><div class="line"><a name="l00487"></a><span class="lineno"> 487</span>&#160;</div><div class="line"><a name="l00488"></a><span class="lineno"> 488</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00489"></a><span class="lineno"> 489</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00490"></a><span class="lineno"> 490</span>&#160;<span class="comment"> Find the point on the triangle that is</span></div><div class="line"><a name="l00491"></a><span class="lineno"> 491</span>&#160;<span class="comment"> closest to the test_point.</span></div><div class="line"><a name="l00492"></a><span class="lineno"> 492</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00493"></a><span class="lineno"> 493</span>&#160;<span class="comment"> test_point -[in]</span></div><div class="line"><a name="l00494"></a><span class="lineno"> 494</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00495"></a><span class="lineno"> 495</span>&#160;<span class="comment"> distance from the point on triangle that is closest</span></div><div class="line"><a name="l00496"></a><span class="lineno"> 496</span>&#160;<span class="comment"> to test_point.</span></div><div class="line"><a name="l00497"></a><span class="lineno"> 497</span>&#160;<span class="comment"> See Also:</span></div><div class="line"><a name="l00498"></a><span class="lineno"> 498</span>&#160;<span class="comment"> ON_3dPoint::DistanceTo</span></div><div class="line"><a name="l00499"></a><span class="lineno"> 499</span>&#160;<span class="comment"> ON_Line::ClosestPointTo</span></div><div class="line"><a name="l00500"></a><span class="lineno"> 500</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00501"></a><span class="lineno"> 501</span>&#160; <span class="keywordtype">double</span> DistanceTo(<span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; test_point) <span class="keyword">const</span>;</div><div class="line"><a name="l00502"></a><span class="lineno"> 502</span>&#160;</div><div class="line"><a name="l00503"></a><span class="lineno"> 503</span>&#160;</div><div class="line"><a name="l00504"></a><span class="lineno"> 504</span>&#160; <span class="comment">// Description:</span></div><div class="line"><a name="l00505"></a><span class="lineno"> 505</span>&#160; <span class="comment">// Reverse endpoints of Edge[i].</span></div><div class="line"><a name="l00506"></a><span class="lineno"> 506</span>&#160; <span class="keywordtype">void</span> Reverse(<span class="keywordtype">int</span> i);</div><div class="line"><a name="l00507"></a><span class="lineno"> 507</span>&#160;</div><div class="line"><a name="l00508"></a><span class="lineno"> 508</span>&#160; <span class="keywordtype">bool</span> Transform(</div><div class="line"><a name="l00509"></a><span class="lineno"> 509</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d3/d13/class_o_n___xform.html">ON_Xform</a>&amp; xform</div><div class="line"><a name="l00510"></a><span class="lineno"> 510</span>&#160; );</div><div class="line"><a name="l00511"></a><span class="lineno"> 511</span>&#160;</div><div class="line"><a name="l00512"></a><span class="lineno"> 512</span>&#160; <span class="comment">// rotate line about a point and axis</span></div><div class="line"><a name="l00513"></a><span class="lineno"> 513</span>&#160; <span class="keywordtype">bool</span> Rotate(</div><div class="line"><a name="l00514"></a><span class="lineno"> 514</span>&#160; <span class="keywordtype">double</span> sin_angle,</div><div class="line"><a name="l00515"></a><span class="lineno"> 515</span>&#160; <span class="keywordtype">double</span> cos_angle,</div><div class="line"><a name="l00516"></a><span class="lineno"> 516</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d5/dae/class_o_n__3d_vector.html">ON_3dVector</a>&amp; axis_of_rotation,</div><div class="line"><a name="l00517"></a><span class="lineno"> 517</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; center_of_rotation</div><div class="line"><a name="l00518"></a><span class="lineno"> 518</span>&#160; );</div><div class="line"><a name="l00519"></a><span class="lineno"> 519</span>&#160;</div><div class="line"><a name="l00520"></a><span class="lineno"> 520</span>&#160; <span class="keywordtype">bool</span> Rotate(</div><div class="line"><a name="l00521"></a><span class="lineno"> 521</span>&#160; <span class="keywordtype">double</span> angle_in_radians,</div><div class="line"><a name="l00522"></a><span class="lineno"><a class="line" href="../../d4/df9/class_o_n___triangle.html#ab721c1111f1fc05d338ed8b6499f7073"> 522</a></span>&#160; <span class="keyword">const</span> <a class="code" href="../../d5/dae/class_o_n__3d_vector.html">ON_3dVector</a>&amp; axis_of_rotation,</div><div class="line"><a name="l00523"></a><span class="lineno"> 523</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; center_of_rotation</div><div class="line"><a name="l00524"></a><span class="lineno"> 524</span>&#160; );</div><div class="line"><a name="l00525"></a><span class="lineno"> 525</span>&#160;</div><div class="line"><a name="l00526"></a><span class="lineno"> 526</span>&#160; <span class="keywordtype">bool</span> Translate(</div><div class="line"><a name="l00527"></a><span class="lineno"> 527</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d5/dae/class_o_n__3d_vector.html">ON_3dVector</a>&amp; delta</div><div class="line"><a name="l00528"></a><span class="lineno"> 528</span>&#160; );</div><div class="line"><a name="l00529"></a><span class="lineno"> 529</span>&#160;</div><div class="line"><a name="l00530"></a><span class="lineno"> 530</span>&#160;</div><div class="line"><a name="l00531"></a><span class="lineno"> 531</span>&#160;<span class="keyword">public</span>:</div><div class="line"><a name="l00532"></a><span class="lineno"> 532</span>&#160; <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a> m_V[3]; <span class="comment">// verticies</span></div><div class="line"><a name="l00533"></a><span class="lineno"> 533</span>&#160;};</div><div class="line"><a name="l00534"></a><span class="lineno"> 534</span>&#160;</div><div class="line"><a name="l00535"></a><span class="lineno"> 535</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00536"></a><span class="lineno"> 536</span>&#160;<span class="comment">Returns:</span></div><div class="line"><a name="l00537"></a><span class="lineno"> 537</span>&#160;<span class="comment">True if a and be are identical and no coordinate is a nan.</span></div><div class="line"><a name="l00538"></a><span class="lineno"> 538</span>&#160;<span class="comment">*/</span></div><div class="line"><a name="l00539"></a><span class="lineno"> 539</span>&#160;ON_DECL</div><div class="line"><a name="l00540"></a><span class="lineno"> 540</span>&#160;<span class="keywordtype">bool</span> operator==(<span class="keyword">const</span> <a class="code" href="../../d4/df9/class_o_n___triangle.html">ON_Triangle</a>&amp; a, <span class="keyword">const</span> <a class="code" href="../../d4/df9/class_o_n___triangle.html">ON_Triangle</a>&amp; b);</div><div class="line"><a name="l00541"></a><span class="lineno"> 541</span>&#160;</div><div class="line"><a name="l00542"></a><span class="lineno"> 542</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00543"></a><span class="lineno"> 543</span>&#160;<span class="comment">Returns:</span></div><div class="line"><a name="l00544"></a><span class="lineno"> 544</span>&#160;<span class="comment">True if a and be are not identical.</span></div><div class="line"><a name="l00545"></a><span class="lineno"> 545</span>&#160;<span class="comment">Remarks:</span></div><div class="line"><a name="l00546"></a><span class="lineno"> 546</span>&#160;<span class="comment">If a nan is involved in every coordinate compare,</span></div><div class="line"><a name="l00547"></a><span class="lineno"> 547</span>&#160;<span class="comment">the result will be false.</span></div><div class="line"><a name="l00548"></a><span class="lineno"> 548</span>&#160;<span class="comment">*/</span></div><div class="line"><a name="l00549"></a><span class="lineno"> 549</span>&#160;ON_DECL</div><div class="line"><a name="l00550"></a><span class="lineno"> 550</span>&#160;<span class="keywordtype">bool</span> operator!=(<span class="keyword">const</span> <a class="code" href="../../d4/df9/class_o_n___triangle.html">ON_Triangle</a>&amp; a, <span class="keyword">const</span> <a class="code" href="../../d4/df9/class_o_n___triangle.html">ON_Triangle</a>&amp; b);</div><div class="line"><a name="l00551"></a><span class="lineno"> 551</span>&#160;</div><div class="line"><a name="l00552"></a><span class="lineno"> 552</span>&#160;</div><div class="line"><a name="l00553"></a><span class="lineno"> 553</span>&#160;</div><div class="line"><a name="l00554"></a><span class="lineno"> 554</span>&#160;</div><div class="line"><a name="l00555"></a><span class="lineno"> 555</span>&#160;<span class="preprocessor">#endif</span></div><div class="ttc" id="class_o_n___line_html_ae20679652aace7da3b465829b8df8ec4"><div class="ttname"><a href="../../d4/d6f/class_o_n___line.html#ae20679652aace7da3b465829b8df8ec4">ON_Line::NanLine</a></div><div class="ttdeci">static const ON_Line NanLine</div><div class="ttdef"><b>Definition:</b> opennurbs_line.h:26</div></div>
<div class="ttc" id="class_o_n___simple_array_html"><div class="ttname"><a href="../../dc/dfe/class_o_n___simple_array.html">ON_SimpleArray</a></div><div class="ttdef"><b>Definition:</b> opennurbs_array.h:36</div></div>
<div class="ttc" id="class_o_n__2d_point_html"><div class="ttname"><a href="../../dd/dd9/class_o_n__2d_point.html">ON_2dPoint</a></div><div class="ttdef"><b>Definition:</b> opennurbs_point.h:277</div></div>
<div class="ttc" id="class_o_n___bounding_box_html"><div class="ttname"><a href="../../d1/d17/class_o_n___bounding_box.html">ON_BoundingBox</a></div><div class="ttdef"><b>Definition:</b> opennurbs_bounding_box.h:25</div></div>
<div class="ttc" id="class_o_n___xform_html"><div class="ttname"><a href="../../d3/d13/class_o_n___xform.html">ON_Xform</a></div><div class="ttdef"><b>Definition:</b> opennurbs_xform.h:28</div></div>
<div class="ttc" id="class_o_n___line_html"><div class="ttname"><a href="../../d4/d6f/class_o_n___line.html">ON_Line</a></div><div class="ttdef"><b>Definition:</b> opennurbs_line.h:20</div></div>
<div class="ttc" id="class_o_n___triangle_html"><div class="ttname"><a href="../../d4/df9/class_o_n___triangle.html">ON_Triangle</a></div><div class="ttdef"><b>Definition:</b> opennurbs_line.h:301</div></div>
<div class="ttc" id="class_o_n___line_html_a40862ba49fa925e2086c1ea657853f20"><div class="ttname"><a href="../../d4/d6f/class_o_n___line.html#a40862ba49fa925e2086c1ea657853f20">ON_Line::ZeroLine</a></div><div class="ttdeci">static const ON_Line ZeroLine</div><div class="ttdef"><b>Definition:</b> opennurbs_line.h:24</div></div>
<div class="ttc" id="class_o_n___line_html_aa2297b8f474d9d84a23ec541c2e7c2f9"><div class="ttname"><a href="../../d4/d6f/class_o_n___line.html#aa2297b8f474d9d84a23ec541c2e7c2f9">ON_Line::UnsetLine</a></div><div class="ttdeci">static const ON_Line UnsetLine</div><div class="ttdef"><b>Definition:</b> opennurbs_line.h:25</div></div>
<div class="ttc" id="class_o_n__3d_point_html"><div class="ttname"><a href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a></div><div class="ttdef"><b>Definition:</b> opennurbs_point.h:460</div></div>
<div class="ttc" id="class_o_n___plane_html"><div class="ttname"><a href="../../d4/d48/class_o_n___plane.html">ON_Plane</a></div><div class="ttdef"><b>Definition:</b> opennurbs_plane.h:20</div></div>
<div class="ttc" id="class_o_n___plane_equation_html"><div class="ttname"><a href="../../dd/d89/class_o_n___plane_equation.html">ON_PlaneEquation</a></div><div class="ttdoc">Typically the vector portion is a unit vector and m_d = -(x*P.x + y*P.y + z*P.z) for a point P on the...</div><div class="ttdef"><b>Definition:</b> opennurbs_point.h:1433</div></div>
<div class="ttc" id="class_o_n__3d_vector_html"><div class="ttname"><a href="../../d5/dae/class_o_n__3d_vector.html">ON_3dVector</a></div><div class="ttdef"><b>Definition:</b> opennurbs_point.h:1152</div></div>
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