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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_PLANE_INC_)</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="preprocessor">#define ON_PLANE_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/d48/class_o_n___plane.html"> 20</a></span>&#160;<span class="keyword">class </span>ON_CLASS <a class="code" href="../../d4/d48/class_o_n___plane.html">ON_Plane</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"> 24</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;<span class="comment"> The default constructor creates a plane</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;<span class="comment"> with orgin=(0,0,0), xaxis=(1,0,0), yaxis=(0,1,0)</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;<span class="comment"> zaxis=(0,0,1), and equation=(0,0,1,0).</span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160; <a class="code" href="../../d4/d48/class_o_n___plane.html">ON_Plane</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="comment">/*</span></div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160;<span class="comment"> Construct a plane from a point and normal vector.</span></div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160;<span class="comment"> origin - [in] point on the plane</span></div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160;<span class="comment"> normal - [in] non-zero normal to the plane</span></div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160;<span class="comment"> Remarks:</span></div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160;<span class="comment"> origin = point, zaxis = unitized normal, xaxis</span></div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160;<span class="comment"> xaxis set with xaxis.PerpindicularTo(zaxis).</span></div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160;<span class="comment"> See Also:</span></div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160;<span class="comment"> ON_Plane::CreateFromNormal</span></div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160; <a class="code" href="../../d4/d48/class_o_n___plane.html">ON_Plane</a>(</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; origin,</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d5/dae/class_o_n__3d_vector.html">ON_3dVector</a>&amp; normal</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="comment">/*</span></div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160;<span class="comment"> Construct a plane from a point, and two vectors in</span></div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160;<span class="comment"> the plane.</span></div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160;<span class="comment"> origin - [in] point on the plane</span></div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160;<span class="comment"> x_dir - [in] non-zero vector in the plane that</span></div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160;<span class="comment"> determines the xaxis direction.</span></div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160;<span class="comment"> y_dir - [in] non-zero vector not parallel to x_dir</span></div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160;<span class="comment"> that is used to determine the yaxis direction.</span></div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160;<span class="comment"> y_dir does not have to be perpendicular to x_dir.</span></div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; <a class="code" href="../../d4/d48/class_o_n___plane.html">ON_Plane</a>(</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>&amp; origin,</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d5/dae/class_o_n__3d_vector.html">ON_3dVector</a>&amp; x_dir,</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d5/dae/class_o_n__3d_vector.html">ON_3dVector</a>&amp; y_dir</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; );</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160;</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160;<span class="comment"> Construct a plane from three non-collinear points.</span></div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160;<span class="comment"> origin - [in] point on the plane</span></div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160;<span class="comment"> x_point - [in] second point in the plane.</span></div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160;<span class="comment"> The xaxis will be parallel to x_point-origin.</span></div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160;<span class="comment"> y_point - [in] third point on the plane that is</span></div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160;<span class="comment"> not collinear with the first two points.</span></div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160;<span class="comment"> yaxis*(y_point-origin) will be &gt; 0.</span></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; <a class="code" href="../../d4/d48/class_o_n___plane.html">ON_Plane</a>(</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; origin,</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; x_point,</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; y_point</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; );</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160;</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160;<span class="comment"> Construct a plane from an equation.</span></div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160;<span class="comment"> equation - [in] an array of 4 doubles with</span></div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160;<span class="comment"> one of equation[0], equation[1], or equation[2]</span></div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160;<span class="comment"> being non-zero.</span></div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; <a class="code" href="../../d4/d48/class_o_n___plane.html">ON_Plane</a>(</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; <span class="keyword">const</span> <span class="keywordtype">double</span> equation[4]</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; );</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160;</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; <a class="code" href="../../d4/d48/class_o_n___plane.html">ON_Plane</a>(</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160; <span class="keyword">const</span> <a class="code" href="../../dd/d89/class_o_n___plane_equation.html">ON_PlaneEquation</a>&amp; plane_equation</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160; );</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160;</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; ~<a class="code" href="../../d4/d48/class_o_n___plane.html">ON_Plane</a>();</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160;</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; <span class="keywordtype">bool</span> operator==(<span class="keyword">const</span> <a class="code" href="../../d4/d48/class_o_n___plane.html">ON_Plane</a>&amp;) <span class="keyword">const</span>;</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160; <span class="keywordtype">bool</span> operator!=(<span class="keyword">const</span> <a class="code" href="../../d4/d48/class_o_n___plane.html">ON_Plane</a>&amp;) <span class="keyword">const</span>;</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160;</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160;<span class="comment"> Create a plane from a point and normal vector.</span></div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160;<span class="comment"> origin - [in] point on the plane</span></div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160;<span class="comment"> normal - [in] non-zero normal to the plane</span></div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160;<span class="comment"> Remarks:</span></div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160;<span class="comment"> origin = point, zaxis = unitized normal, xaxis</span></div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160;<span class="comment"> xaxis set with xaxis.PerpindicularTo(zaxis).</span></div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160;<span class="comment"> true if valid plane is created.</span></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="keywordtype">bool</span> CreateFromNormal(</div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; origin,</div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d5/dae/class_o_n__3d_vector.html">ON_3dVector</a>&amp; normal</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160; );</div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160;</div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160;<span class="comment"> Construct a plane from a point, and two vectors in</span></div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160;<span class="comment"> the plane.</span></div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160;<span class="comment"> origin - [in] point on the plane</span></div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160;<span class="comment"> x_dir - [in] non-zero vector in the plane that</span></div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160;<span class="comment"> determines the xaxis direction.</span></div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160;<span class="comment"> y_dir - [in] non-zero vector not parallel to x_dir</span></div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160;<span class="comment"> that is used to determine the yaxis direction.</span></div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160;<span class="comment"> y_dir does not have to be perpendicular to x_dir.</span></div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160;<span class="comment"> true if valid plane is created.</span></div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160; <span class="keywordtype">bool</span> CreateFromFrame(</div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; origin,</div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d5/dae/class_o_n__3d_vector.html">ON_3dVector</a>&amp; x_dir,</div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d5/dae/class_o_n__3d_vector.html">ON_3dVector</a>&amp; y_dir</div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160; );</div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160;</div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160;<span class="comment"> Construct a plane from three non-collinear points.</span></div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160;<span class="comment"> origin - [in] point on the plane</span></div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160;<span class="comment"> point_on_x - [in] second point in the plane.</span></div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160;<span class="comment"> The xaxis will be parallel to x_point-origin.</span></div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160;<span class="comment"> point_on - [in] third point on the plane that is</span></div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160;<span class="comment"> not collinear with the first two points.</span></div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160;<span class="comment"> yaxis*(y_point-origin) will be &gt; 0.</span></div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160;<span class="comment"> true if valid plane is created.</span></div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160; <span class="keywordtype">bool</span> CreateFromPoints(</div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; origin,</div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; point_on_x,</div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; point_on</div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160; );</div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160;</div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160;<span class="comment"> Construct a plane from an equation.</span></div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160;<span class="comment"> equation - [in] an array of 4 doubles with</span></div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>&#160;<span class="comment"> one of equation[0], equation[1], or equation[2]</span></div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160;<span class="comment"> being non-zero.</span></div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span>&#160;<span class="comment"> Remarks:</span></div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>&#160;<span class="comment"> points on the plane will satisfy </span></div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span>&#160;<span class="comment"> x*equation[0] +y*equation[1] + z*equation[2] + equation[3] = 0</span></div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160;<span class="comment"> true if valid plane is created.</span></div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span>&#160; <span class="keywordtype">bool</span> CreateFromEquation(</div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160; <span class="keyword">const</span> <span class="keywordtype">double</span> equation[4]</div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span>&#160; );</div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160;</div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160; <span class="keywordtype">bool</span> CreateFromEquation(</div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span>&#160; <span class="keyword">const</span> <span class="keyword">class</span> <a class="code" href="../../dd/d89/class_o_n___plane_equation.html">ON_PlaneEquation</a>&amp; plane_equation</div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span>&#160; );</div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>&#160;</div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160;<span class="comment"> ON_Plane::UnsetPlane if input is not valid.</span></div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span>&#160; <span class="keyword">static</span> <a class="code" href="../../d4/d48/class_o_n___plane.html">ON_Plane</a> FromPointList(</div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span>&#160; <span class="keywordtype">size_t</span> point_list_count,</div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>* point_list</div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span>&#160; );</div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span>&#160;</div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span>&#160;<span class="comment"> ON_Plane::UnsetPlane if input is not valid.</span></div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>&#160; <span class="keyword">static</span> <a class="code" href="../../d4/d48/class_o_n___plane.html">ON_Plane</a> FromPointList(</div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span>&#160; <span class="keyword">const</span> <a class="code" href="../../dc/dfe/class_o_n___simple_array.html">ON_SimpleArray&lt; ON_3dPoint &gt;</a>&amp; point_list</div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span>&#160; );</div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span>&#160;</div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span>&#160;</div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span>&#160;<span class="comment"> ON_Plane::UnsetPlane if input is not valid.</span></div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span>&#160; <span class="keyword">static</span> <a class="code" href="../../d4/d48/class_o_n___plane.html">ON_Plane</a> FromPointList(</div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span>&#160; <span class="keywordtype">size_t</span> point_list_count,</div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d0/dec/class_o_n__3f_point.html">ON_3fPoint</a>* point_list</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"> Returns:</span></div><div class="line"><a name="l00211"></a><span class="lineno"> 211</span>&#160;<span class="comment"> ON_Plane::UnsetPlane if input is not valid.</span></div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00213"></a><span class="lineno"> 213</span>&#160; <span class="keyword">static</span> <a class="code" href="../../d4/d48/class_o_n___plane.html">ON_Plane</a> FromPointList(</div><div class="line"><a name="l00214"></a><span class="lineno"> 214</span>&#160; <span class="keyword">const</span> <a class="code" href="../../dc/dfe/class_o_n___simple_array.html">ON_SimpleArray&lt; ON_3fPoint &gt;</a>&amp; point_list</div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span>&#160; );</div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span>&#160;</div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span>&#160;<span class="comment"> ON_Plane::UnsetPlane if input is not valid.</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="keyword">static</span> <a class="code" href="../../d4/d48/class_o_n___plane.html">ON_Plane</a> FromPointList(</div><div class="line"><a name="l00222"></a><span class="lineno"> 222</span>&#160; <span class="keyword">const</span> <span class="keyword">class</span> <a class="code" href="../../d0/d8a/class_o_n__3d_point_list_ref.html">ON_3dPointListRef</a>&amp; point_list</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;</div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00226"></a><span class="lineno"> 226</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00227"></a><span class="lineno"> 227</span>&#160;<span class="comment"> ON_Plane::UnsetPlane if input is not valid.</span></div><div class="line"><a name="l00228"></a><span class="lineno"> 228</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00229"></a><span class="lineno"> 229</span>&#160; <span class="keyword">static</span> <a class="code" href="../../d4/d48/class_o_n___plane.html">ON_Plane</a> FromPointList(</div><div class="line"><a name="l00230"></a><span class="lineno"> 230</span>&#160; <span class="keywordtype">size_t</span> point_index_count,</div><div class="line"><a name="l00231"></a><span class="lineno"> 231</span>&#160; <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>* point_index_list,</div><div class="line"><a name="l00232"></a><span class="lineno"> 232</span>&#160; <span class="keyword">const</span> <span class="keyword">class</span> <a class="code" href="../../d0/d8a/class_o_n__3d_point_list_ref.html">ON_3dPointListRef</a>&amp; point_list</div><div class="line"><a name="l00233"></a><span class="lineno"> 233</span>&#160; );</div><div class="line"><a name="l00234"></a><span class="lineno"> 234</span>&#160;</div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span>&#160; <span class="keyword">static</span> <a class="code" href="../../d4/d48/class_o_n___plane.html">ON_Plane</a> FromPointList(</div><div class="line"><a name="l00236"></a><span class="lineno"> 236</span>&#160; <span class="keywordtype">size_t</span> point_index_count,</div><div class="line"><a name="l00237"></a><span class="lineno"> 237</span>&#160; <span class="keywordtype">size_t</span> point_index_stride,</div><div class="line"><a name="l00238"></a><span class="lineno"> 238</span>&#160; <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>* point_index_list,</div><div class="line"><a name="l00239"></a><span class="lineno"> 239</span>&#160; <span class="keyword">const</span> <span class="keyword">class</span> <a class="code" href="../../d0/d8a/class_o_n__3d_point_list_ref.html">ON_3dPointListRef</a>&amp; point_list</div><div class="line"><a name="l00240"></a><span class="lineno"> 240</span>&#160; );</div><div class="line"><a name="l00241"></a><span class="lineno"> 241</span>&#160;</div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00243"></a><span class="lineno"> 243</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00244"></a><span class="lineno"> 244</span>&#160;<span class="comment"> Test plane to see if it is valid.</span></div><div class="line"><a name="l00245"></a><span class="lineno"> 245</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00246"></a><span class="lineno"> 246</span>&#160;<span class="comment"> true if all fields contain reasonable</span></div><div class="line"><a name="l00247"></a><span class="lineno"> 247</span>&#160;<span class="comment"> information and equation jibes with point and zaxis.</span></div><div class="line"><a name="l00248"></a><span class="lineno"> 248</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00249"></a><span class="lineno"> 249</span>&#160; <span class="keywordtype">bool</span> IsValid() <span class="keyword">const</span>;</div><div class="line"><a name="l00250"></a><span class="lineno"> 250</span>&#160;</div><div class="line"><a name="l00251"></a><span class="lineno"> 251</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00252"></a><span class="lineno"> 252</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00253"></a><span class="lineno"> 253</span>&#160;<span class="comment"> Plane origin.</span></div><div class="line"><a name="l00254"></a><span class="lineno"> 254</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00255"></a><span class="lineno"> 255</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; Origin() <span class="keyword">const</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">/*</span></div><div class="line"><a name="l00258"></a><span class="lineno"> 258</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00259"></a><span class="lineno"> 259</span>&#160;<span class="comment"> Plane unit x-axis.</span></div><div class="line"><a name="l00260"></a><span class="lineno"> 260</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00261"></a><span class="lineno"> 261</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d5/dae/class_o_n__3d_vector.html">ON_3dVector</a>&amp; Xaxis() <span class="keyword">const</span>;</div><div class="line"><a name="l00262"></a><span class="lineno"> 262</span>&#160;</div><div class="line"><a name="l00263"></a><span class="lineno"> 263</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00264"></a><span class="lineno"> 264</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00265"></a><span class="lineno"> 265</span>&#160;<span class="comment"> Plane unit y-axis.</span></div><div class="line"><a name="l00266"></a><span class="lineno"> 266</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00267"></a><span class="lineno"> 267</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d5/dae/class_o_n__3d_vector.html">ON_3dVector</a>&amp; Yaxis() <span class="keyword">const</span>;</div><div class="line"><a name="l00268"></a><span class="lineno"> 268</span>&#160;</div><div class="line"><a name="l00269"></a><span class="lineno"> 269</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00270"></a><span class="lineno"> 270</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00271"></a><span class="lineno"> 271</span>&#160;<span class="comment"> Plane unit normal.</span></div><div class="line"><a name="l00272"></a><span class="lineno"> 272</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00273"></a><span class="lineno"> 273</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d5/dae/class_o_n__3d_vector.html">ON_3dVector</a>&amp; Normal() <span class="keyword">const</span>;</div><div class="line"><a name="l00274"></a><span class="lineno"> 274</span>&#160;</div><div class="line"><a name="l00275"></a><span class="lineno"> 275</span>&#160;</div><div class="line"><a name="l00276"></a><span class="lineno"> 276</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00277"></a><span class="lineno"> 277</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00278"></a><span class="lineno"> 278</span>&#160;<span class="comment"> Set the origin and update the plane equation</span></div><div class="line"><a name="l00279"></a><span class="lineno"> 279</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00280"></a><span class="lineno"> 280</span>&#160;<span class="comment"> origin - [in] the new origin</span></div><div class="line"><a name="l00281"></a><span class="lineno"> 281</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00282"></a><span class="lineno"> 282</span>&#160; <span class="keywordtype">void</span> SetOrigin( <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; origin );</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="comment">/*</span></div><div class="line"><a name="l00285"></a><span class="lineno"> 285</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00286"></a><span class="lineno"> 286</span>&#160;<span class="comment"> Evaluate a point on the plane</span></div><div class="line"><a name="l00287"></a><span class="lineno"> 287</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00288"></a><span class="lineno"> 288</span>&#160;<span class="comment"> u - [in]</span></div><div class="line"><a name="l00289"></a><span class="lineno"> 289</span>&#160;<span class="comment"> v - [in] evaulation parameters</span></div><div class="line"><a name="l00290"></a><span class="lineno"> 290</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00291"></a><span class="lineno"> 291</span>&#160;<span class="comment"> plane.origin + u*plane.xaxis + v*plane.yaxis</span></div><div class="line"><a name="l00292"></a><span class="lineno"> 292</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00293"></a><span class="lineno"> 293</span>&#160; <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a> PointAt(</div><div class="line"><a name="l00294"></a><span class="lineno"> 294</span>&#160; <span class="keywordtype">double</span> u,</div><div class="line"><a name="l00295"></a><span class="lineno"> 295</span>&#160; <span class="keywordtype">double</span> v</div><div class="line"><a name="l00296"></a><span class="lineno"> 296</span>&#160; ) <span class="keyword">const</span>;</div><div class="line"><a name="l00297"></a><span class="lineno"> 297</span>&#160;</div><div class="line"><a name="l00298"></a><span class="lineno"> 298</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00299"></a><span class="lineno"> 299</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00300"></a><span class="lineno"> 300</span>&#160;<span class="comment"> Evaluate a point on the plane</span></div><div class="line"><a name="l00301"></a><span class="lineno"> 301</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00302"></a><span class="lineno"> 302</span>&#160;<span class="comment"> u - [in]</span></div><div class="line"><a name="l00303"></a><span class="lineno"> 303</span>&#160;<span class="comment"> v - [in] evaluation parameters</span></div><div class="line"><a name="l00304"></a><span class="lineno"> 304</span>&#160;<span class="comment"> w - [in] elevation parameter</span></div><div class="line"><a name="l00305"></a><span class="lineno"> 305</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00306"></a><span class="lineno"> 306</span>&#160;<span class="comment"> plane.origin + u*plane.xaxis + v*plane.yaxis + z*plane.zaxis</span></div><div class="line"><a name="l00307"></a><span class="lineno"> 307</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00308"></a><span class="lineno"> 308</span>&#160; <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a> PointAt(</div><div class="line"><a name="l00309"></a><span class="lineno"> 309</span>&#160; <span class="keywordtype">double</span> u,</div><div class="line"><a name="l00310"></a><span class="lineno"> 310</span>&#160; <span class="keywordtype">double</span> v,</div><div class="line"><a name="l00311"></a><span class="lineno"> 311</span>&#160; <span class="keywordtype">double</span> w</div><div class="line"><a name="l00312"></a><span class="lineno"> 312</span>&#160; ) <span class="keyword">const</span>;</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="comment">/*</span></div><div class="line"><a name="l00315"></a><span class="lineno"> 315</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00316"></a><span class="lineno"> 316</span>&#160;<span class="comment"> Get an isoparameteric line on the plane.</span></div><div class="line"><a name="l00317"></a><span class="lineno"> 317</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00318"></a><span class="lineno"> 318</span>&#160;<span class="comment"> dir - [in] direction of iso-parametric line</span></div><div class="line"><a name="l00319"></a><span class="lineno"> 319</span>&#160;<span class="comment"> 0: first parameter varies and second parameter is constant</span></div><div class="line"><a name="l00320"></a><span class="lineno"> 320</span>&#160;<span class="comment"> e.g., line(t) = plane(t,c)</span></div><div class="line"><a name="l00321"></a><span class="lineno"> 321</span>&#160;<span class="comment"> 1: first parameter is constant and second parameter varies</span></div><div class="line"><a name="l00322"></a><span class="lineno"> 322</span>&#160;<span class="comment"> e.g., line(t) = plane(c,t)</span></div><div class="line"><a name="l00323"></a><span class="lineno"> 323</span>&#160;<span class="comment"> c - [in] value of constant parameter </span></div><div class="line"><a name="l00324"></a><span class="lineno"> 324</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00325"></a><span class="lineno"> 325</span>&#160;<span class="comment"> iso-parametric line</span></div><div class="line"><a name="l00326"></a><span class="lineno"> 326</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00327"></a><span class="lineno"> 327</span>&#160; <a class="code" href="../../d4/d6f/class_o_n___line.html">ON_Line</a> IsoLine(</div><div class="line"><a name="l00328"></a><span class="lineno"> 328</span>&#160; <span class="keywordtype">int</span> dir,</div><div class="line"><a name="l00329"></a><span class="lineno"> 329</span>&#160; <span class="keywordtype">double</span> c</div><div class="line"><a name="l00330"></a><span class="lineno"> 330</span>&#160; ) <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"> Description:</span></div><div class="line"><a name="l00334"></a><span class="lineno"> 334</span>&#160;<span class="comment"> Get signed distance from the plane to a point.</span></div><div class="line"><a name="l00335"></a><span class="lineno"> 335</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00336"></a><span class="lineno"> 336</span>&#160;<span class="comment"> point - [in]</span></div><div class="line"><a name="l00337"></a><span class="lineno"> 337</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00338"></a><span class="lineno"> 338</span>&#160;<span class="comment"> Signed distance from a point to a plane.</span></div><div class="line"><a name="l00339"></a><span class="lineno"> 339</span>&#160;<span class="comment"> Remarks:</span></div><div class="line"><a name="l00340"></a><span class="lineno"> 340</span>&#160;<span class="comment"> If the point is on the plane, the distance is 0.</span></div><div class="line"><a name="l00341"></a><span class="lineno"> 341</span>&#160;<span class="comment"> If the point is above the plane, the distance is &gt; 0.</span></div><div class="line"><a name="l00342"></a><span class="lineno"> 342</span>&#160;<span class="comment"> If the point is below the plane the distance is &lt; 0.</span></div><div class="line"><a name="l00343"></a><span class="lineno"> 343</span>&#160;<span class="comment"> The zaxis determines the plane&#39;s orientation.</span></div><div class="line"><a name="l00344"></a><span class="lineno"> 344</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00345"></a><span class="lineno"> 345</span>&#160; <span class="keywordtype">double</span> DistanceTo( </div><div class="line"><a name="l00346"></a><span class="lineno"> 346</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; point</div><div class="line"><a name="l00347"></a><span class="lineno"> 347</span>&#160; ) <span class="keyword">const</span>;</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;</div><div class="line"><a name="l00350"></a><span class="lineno"> 350</span>&#160; <span class="keywordtype">bool</span> GetDistanceToBoundingBox(</div><div class="line"><a name="l00351"></a><span class="lineno"> 351</span>&#160; <span class="comment">//returns false if plane has zero length normal</span></div><div class="line"><a name="l00352"></a><span class="lineno"> 352</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d1/d17/class_o_n___bounding_box.html">ON_BoundingBox</a>&amp;, <span class="comment">// Box</span></div><div class="line"><a name="l00353"></a><span class="lineno"> 353</span>&#160;</div><div class="line"><a name="l00354"></a><span class="lineno"> 354</span>&#160; <span class="comment">//output</span></div><div class="line"><a name="l00355"></a><span class="lineno"> 355</span>&#160; <span class="keywordtype">double</span>* min, <span class="comment">// min signed dist from plane to box </span></div><div class="line"><a name="l00356"></a><span class="lineno"> 356</span>&#160; <span class="keywordtype">double</span>* max <span class="comment">//max signed dist from plane to box</span></div><div class="line"><a name="l00357"></a><span class="lineno"> 357</span>&#160; ) <span class="keyword">const</span>;</div><div class="line"><a name="l00358"></a><span class="lineno"> 358</span>&#160;</div><div class="line"><a name="l00359"></a><span class="lineno"> 359</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00360"></a><span class="lineno"> 360</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00361"></a><span class="lineno"> 361</span>&#160;<span class="comment"> Update the plane equation based on the current values</span></div><div class="line"><a name="l00362"></a><span class="lineno"> 362</span>&#160;<span class="comment"> of the origin and zaxis.</span></div><div class="line"><a name="l00363"></a><span class="lineno"> 363</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00364"></a><span class="lineno"> 364</span>&#160;<span class="comment"> true if successful. false if zaxis is zero.</span></div><div class="line"><a name="l00365"></a><span class="lineno"> 365</span>&#160;<span class="comment"> Remarks:</span></div><div class="line"><a name="l00366"></a><span class="lineno"> 366</span>&#160;<span class="comment"> If you modify a plane&#39;s origin or zaxis, call UpdateEquation()</span></div><div class="line"><a name="l00367"></a><span class="lineno"> 367</span>&#160;<span class="comment"> to set equation[]. </span></div><div class="line"><a name="l00368"></a><span class="lineno"> 368</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00369"></a><span class="lineno"> 369</span>&#160; <span class="keywordtype">bool</span> UpdateEquation();</div><div class="line"><a name="l00370"></a><span class="lineno"> 370</span>&#160;</div><div class="line"><a name="l00371"></a><span class="lineno"> 371</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00372"></a><span class="lineno"> 372</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00373"></a><span class="lineno"> 373</span>&#160;<span class="comment"> Get point on plane that is closest to a given point.</span></div><div class="line"><a name="l00374"></a><span class="lineno"> 374</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00375"></a><span class="lineno"> 375</span>&#160;<span class="comment"> world_point - [in] 3d point</span></div><div class="line"><a name="l00376"></a><span class="lineno"> 376</span>&#160;<span class="comment"> u - [out] </span></div><div class="line"><a name="l00377"></a><span class="lineno"> 377</span>&#160;<span class="comment"> v - [out] The point ON_Plane::PointAt(*u,*v) is the point</span></div><div class="line"><a name="l00378"></a><span class="lineno"> 378</span>&#160;<span class="comment"> on the plane that is closest to world_point.</span></div><div class="line"><a name="l00379"></a><span class="lineno"> 379</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00380"></a><span class="lineno"> 380</span>&#160;<span class="comment"> true if successful.</span></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="keywordtype">bool</span> ClosestPointTo( </div><div class="line"><a name="l00383"></a><span class="lineno"> 383</span>&#160; <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a> world_point,</div><div class="line"><a name="l00384"></a><span class="lineno"> 384</span>&#160; <span class="keywordtype">double</span>* u,</div><div class="line"><a name="l00385"></a><span class="lineno"> 385</span>&#160; <span class="keywordtype">double</span>* v</div><div class="line"><a name="l00386"></a><span class="lineno"> 386</span>&#160; ) <span class="keyword">const</span>;</div><div class="line"><a name="l00387"></a><span class="lineno"> 387</span>&#160;</div><div class="line"><a name="l00388"></a><span class="lineno"> 388</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00389"></a><span class="lineno"> 389</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00390"></a><span class="lineno"> 390</span>&#160;<span class="comment"> Get point on plane that is closest to a given point.</span></div><div class="line"><a name="l00391"></a><span class="lineno"> 391</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00392"></a><span class="lineno"> 392</span>&#160;<span class="comment"> point - [in]</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"> A 3d point on the plane that is closest to world_point.</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; <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a> ClosestPointTo( </div><div class="line"><a name="l00397"></a><span class="lineno"> 397</span>&#160; <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a> point</div><div class="line"><a name="l00398"></a><span class="lineno"> 398</span>&#160; ) <span class="keyword">const</span>;</div><div class="line"><a name="l00399"></a><span class="lineno"> 399</span>&#160;</div><div class="line"><a name="l00400"></a><span class="lineno"> 400</span>&#160; <span class="comment">// For intersections see ON_Intersect();</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">/*</span></div><div class="line"><a name="l00403"></a><span class="lineno"> 403</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00404"></a><span class="lineno"> 404</span>&#160;<span class="comment"> Transform plane.</span></div><div class="line"><a name="l00405"></a><span class="lineno"> 405</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00406"></a><span class="lineno"> 406</span>&#160;<span class="comment"> xform - [in] transformation to apply to plane</span></div><div class="line"><a name="l00407"></a><span class="lineno"> 407</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00408"></a><span class="lineno"> 408</span>&#160;<span class="comment"> true if successful</span></div><div class="line"><a name="l00409"></a><span class="lineno"> 409</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00410"></a><span class="lineno"> 410</span>&#160; <span class="keywordtype">bool</span> Transform( </div><div class="line"><a name="l00411"></a><span class="lineno"> 411</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="l00412"></a><span class="lineno"> 412</span>&#160; );</div><div class="line"><a name="l00413"></a><span class="lineno"> 413</span>&#160;</div><div class="line"><a name="l00414"></a><span class="lineno"> 414</span>&#160;</div><div class="line"><a name="l00415"></a><span class="lineno"> 415</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00416"></a><span class="lineno"> 416</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00417"></a><span class="lineno"> 417</span>&#160;<span class="comment"> Transform a plane by swapping coordinates.</span></div><div class="line"><a name="l00418"></a><span class="lineno"> 418</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00419"></a><span class="lineno"> 419</span>&#160;<span class="comment"> i - [in]</span></div><div class="line"><a name="l00420"></a><span class="lineno"> 420</span>&#160;<span class="comment"> j - [in] indices of coordinates to swap.</span></div><div class="line"><a name="l00421"></a><span class="lineno"> 421</span>&#160;<span class="comment"> 0 = x coordinate, 1 = y coordinate, 2 = z coordinate.</span></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"> true if successful.</span></div><div class="line"><a name="l00424"></a><span class="lineno"> 424</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00425"></a><span class="lineno"> 425</span>&#160; <span class="keywordtype">bool</span> SwapCoordinates(</div><div class="line"><a name="l00426"></a><span class="lineno"> 426</span>&#160; <span class="keywordtype">int</span> i,</div><div class="line"><a name="l00427"></a><span class="lineno"> 427</span>&#160; <span class="keywordtype">int</span> j</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;</div><div class="line"><a name="l00430"></a><span class="lineno"> 430</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00431"></a><span class="lineno"> 431</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00432"></a><span class="lineno"> 432</span>&#160;<span class="comment"> Rotate a plane about its origin.</span></div><div class="line"><a name="l00433"></a><span class="lineno"> 433</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00434"></a><span class="lineno"> 434</span>&#160;<span class="comment"> sin_angle - [in] sine of rotation angle</span></div><div class="line"><a name="l00435"></a><span class="lineno"> 435</span>&#160;<span class="comment"> cos_angle - [in] cosine of rotation angle</span></div><div class="line"><a name="l00436"></a><span class="lineno"> 436</span>&#160;<span class="comment"> axis - [in] axis of rotation</span></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"> true if successful</span></div><div class="line"><a name="l00439"></a><span class="lineno"> 439</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00440"></a><span class="lineno"> 440</span>&#160; <span class="keywordtype">bool</span> Rotate(</div><div class="line"><a name="l00441"></a><span class="lineno"> 441</span>&#160; <span class="keywordtype">double</span> sin_angle,</div><div class="line"><a name="l00442"></a><span class="lineno"> 442</span>&#160; <span class="keywordtype">double</span> cos_angle,</div><div class="line"><a name="l00443"></a><span class="lineno"> 443</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d5/dae/class_o_n__3d_vector.html">ON_3dVector</a>&amp; axis</div><div class="line"><a name="l00444"></a><span class="lineno"> 444</span>&#160; );</div><div class="line"><a name="l00445"></a><span class="lineno"> 445</span>&#160;</div><div class="line"><a name="l00446"></a><span class="lineno"> 446</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00447"></a><span class="lineno"> 447</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00448"></a><span class="lineno"> 448</span>&#160;<span class="comment"> Rotate a plane about its origin.</span></div><div class="line"><a name="l00449"></a><span class="lineno"> 449</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00450"></a><span class="lineno"> 450</span>&#160;<span class="comment"> angle - [in] rotation angle in radians</span></div><div class="line"><a name="l00451"></a><span class="lineno"> 451</span>&#160;<span class="comment"> axis - [in] axis of rotation</span></div><div class="line"><a name="l00452"></a><span class="lineno"> 452</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00453"></a><span class="lineno"> 453</span>&#160;<span class="comment"> true if successful</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; <span class="keywordtype">bool</span> Rotate(</div><div class="line"><a name="l00456"></a><span class="lineno"> 456</span>&#160; <span class="keywordtype">double</span> angle,</div><div class="line"><a name="l00457"></a><span class="lineno"> 457</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d5/dae/class_o_n__3d_vector.html">ON_3dVector</a>&amp; axis</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;</div><div class="line"><a name="l00460"></a><span class="lineno"> 460</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00461"></a><span class="lineno"> 461</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00462"></a><span class="lineno"> 462</span>&#160;<span class="comment"> Rotate a plane about a 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"> sin_angle - [in] sine of rotation angle</span></div><div class="line"><a name="l00465"></a><span class="lineno"> 465</span>&#160;<span class="comment"> cos_angle - [in] cosine of rotation angle</span></div><div class="line"><a name="l00466"></a><span class="lineno"> 466</span>&#160;<span class="comment"> axis - [in] axis of rotation</span></div><div class="line"><a name="l00467"></a><span class="lineno"> 467</span>&#160;<span class="comment"> center - [in] center of rotation</span></div><div class="line"><a name="l00468"></a><span class="lineno"> 468</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00469"></a><span class="lineno"> 469</span>&#160;<span class="comment"> true if successful</span></div><div class="line"><a name="l00470"></a><span class="lineno"> 470</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00471"></a><span class="lineno"> 471</span>&#160; <span class="keywordtype">bool</span> Rotate(</div><div class="line"><a name="l00472"></a><span class="lineno"> 472</span>&#160; <span class="keywordtype">double</span> sin_angle,</div><div class="line"><a name="l00473"></a><span class="lineno"> 473</span>&#160; <span class="keywordtype">double</span> cos_angle,</div><div class="line"><a name="l00474"></a><span class="lineno"> 474</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d5/dae/class_o_n__3d_vector.html">ON_3dVector</a>&amp; axis,</div><div class="line"><a name="l00475"></a><span class="lineno"> 475</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; center</div><div class="line"><a name="l00476"></a><span class="lineno"> 476</span>&#160; );</div><div class="line"><a name="l00477"></a><span class="lineno"> 477</span>&#160;</div><div class="line"><a name="l00478"></a><span class="lineno"> 478</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00479"></a><span class="lineno"> 479</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00480"></a><span class="lineno"> 480</span>&#160;<span class="comment"> Rotate a plane about a point.</span></div><div class="line"><a name="l00481"></a><span class="lineno"> 481</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00482"></a><span class="lineno"> 482</span>&#160;<span class="comment"> angle - [in] rotation angle in radians</span></div><div class="line"><a name="l00483"></a><span class="lineno"><a class="line" href="../../d4/d48/class_o_n___plane.html#a8f01670d699285d735436acd2809404d"> 483</a></span>&#160;<span class="comment"> axis - [in] axis of rotation</span></div><div class="line"><a name="l00484"></a><span class="lineno"> 484</span>&#160;<span class="comment"> center - [in] center of rotation</span></div><div class="line"><a name="l00485"></a><span class="lineno"> 485</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00486"></a><span class="lineno"> 486</span>&#160;<span class="comment"> true if successful</span></div><div class="line"><a name="l00487"></a><span class="lineno"><a class="line" href="../../d4/d48/class_o_n___plane.html#af251e4001b76ee0eb1bf0736859552cd"> 487</a></span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00488"></a><span class="lineno"> 488</span>&#160; <span class="keywordtype">bool</span> Rotate(</div><div class="line"><a name="l00489"></a><span class="lineno"> 489</span>&#160; <span class="keywordtype">double</span> angle,</div><div class="line"><a name="l00490"></a><span class="lineno"> 490</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d5/dae/class_o_n__3d_vector.html">ON_3dVector</a>&amp; axis,</div><div class="line"><a name="l00491"></a><span class="lineno"><a class="line" href="../../d4/d48/class_o_n___plane.html#a350027abe02825a21b5ac845434e55d7"> 491</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</div><div class="line"><a name="l00492"></a><span class="lineno"> 492</span>&#160; );</div><div class="line"><a name="l00493"></a><span class="lineno"> 493</span>&#160;</div><div class="line"><a name="l00494"></a><span class="lineno"><a class="line" href="../../d4/d48/class_o_n___plane.html#a8a820ddaf9b048c579ba2b16992bfd94"> 494</a></span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00495"></a><span class="lineno"> 495</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00496"></a><span class="lineno"> 496</span>&#160;<span class="comment"> Translate a plane.</span></div><div class="line"><a name="l00497"></a><span class="lineno"><a class="line" href="../../d4/d48/class_o_n___plane.html#ada6603c8f0b85f552a74736926438e9f"> 497</a></span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00498"></a><span class="lineno"> 498</span>&#160;<span class="comment"> delta - [in] translation vector</span></div><div class="line"><a name="l00499"></a><span class="lineno"> 499</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00500"></a><span class="lineno"><a class="line" href="../../d4/d48/class_o_n___plane.html#ac6fca85c16426515d92d0fd14f3f8c11"> 500</a></span>&#160;<span class="comment"> true if successful</span></div><div class="line"><a name="l00501"></a><span class="lineno"> 501</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00502"></a><span class="lineno"> 502</span>&#160; <span class="keywordtype">bool</span> Translate(</div><div class="line"><a name="l00503"></a><span class="lineno"><a class="line" href="../../d4/d48/class_o_n___plane.html#ae40c8d792219f5fda4e368a9a7c40774"> 503</a></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="l00504"></a><span class="lineno"> 504</span>&#160; );</div><div class="line"><a name="l00505"></a><span class="lineno"> 505</span>&#160;</div><div class="line"><a name="l00506"></a><span class="lineno"> 506</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00507"></a><span class="lineno"><a class="line" href="../../d3/da3/class_o_n___clipping_plane_info.html"> 507</a></span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00508"></a><span class="lineno"> 508</span>&#160;<span class="comment"> Flip plane orientation by swapping x and y axes,</span></div><div class="line"><a name="l00509"></a><span class="lineno"> 509</span>&#160;<span class="comment"> reversing the zaxis, and updating the equation.</span></div><div class="line"><a name="l00510"></a><span class="lineno"> 510</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00511"></a><span class="lineno"> 511</span>&#160;<span class="comment"> true if successful</span></div><div class="line"><a name="l00512"></a><span class="lineno"> 512</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00513"></a><span class="lineno"> 513</span>&#160; <span class="keywordtype">bool</span> Flip();</div><div class="line"><a name="l00514"></a><span class="lineno"> 514</span>&#160;</div><div class="line"><a name="l00515"></a><span class="lineno"><a class="line" href="../../d3/da3/class_o_n___clipping_plane_info.html#a5113808b895def2a4f6d5b973a0683b6"> 515</a></span>&#160;<span class="comment">// world plane coordinate system ON_Plane(ON_3dPoint::Origin, ON_3dVector::XAxis, ON_3dVector::YAxis); </span></div><div class="line"><a name="l00516"></a><span class="lineno"><a class="line" href="../../d3/da3/class_o_n___clipping_plane_info.html#a8740fce64547c76fc9e254544150359b"> 516</a></span>&#160; <span class="keyword">const</span> <span class="keyword">static</span></div><div class="line"><a name="l00517"></a><span class="lineno"><a class="line" href="../../d3/da3/class_o_n___clipping_plane_info.html#a248ac41cb9a8627b2c998ffe679e896e"> 517</a></span>&#160; <a class="code" href="../../d4/d48/class_o_n___plane.html">ON_Plane</a> World_xy; </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; <span class="comment">// All values are ON_UNSET_VALUE.</span></div><div class="line"><a name="l00520"></a><span class="lineno"> 520</span>&#160; <span class="keyword">const</span> <span class="keyword">static</span></div><div class="line"><a name="l00521"></a><span class="lineno"> 521</span>&#160; <a class="code" href="../../d4/d48/class_o_n___plane.html">ON_Plane</a> UnsetPlane;</div><div class="line"><a name="l00522"></a><span class="lineno"> 522</span>&#160;</div><div class="line"><a name="l00523"></a><span class="lineno"> 523</span>&#160;<span class="keyword">public</span>:</div><div class="line"><a name="l00524"></a><span class="lineno"><a class="line" href="../../d6/de8/class_o_n___clipping_plane.html"> 524</a></span>&#160; <span class="comment">// origin of plane</span></div><div class="line"><a name="l00525"></a><span class="lineno"> 525</span>&#160; <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a> origin;</div><div class="line"><a name="l00526"></a><span class="lineno"> 526</span>&#160;</div><div class="line"><a name="l00527"></a><span class="lineno"> 527</span>&#160; <span class="comment">// unit X axis of plane</span></div><div class="line"><a name="l00528"></a><span class="lineno"> 528</span>&#160; <a class="code" href="../../d5/dae/class_o_n__3d_vector.html">ON_3dVector</a> xaxis;</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; <span class="comment">// unit Y axis of plane</span></div><div class="line"><a name="l00531"></a><span class="lineno"> 531</span>&#160; <a class="code" href="../../d5/dae/class_o_n__3d_vector.html">ON_3dVector</a> yaxis;</div><div class="line"><a name="l00532"></a><span class="lineno"><a class="line" href="../../d6/de8/class_o_n___clipping_plane.html#a8f3f892481ba7e294fbaa3f2b97cf0c9"> 532</a></span>&#160;</div><div class="line"><a name="l00533"></a><span class="lineno"><a class="line" href="../../d6/de8/class_o_n___clipping_plane.html#afaf9f682b4139114353eea6e8827150c"> 533</a></span>&#160; <span class="comment">// unit Z axis of plane</span></div><div class="line"><a name="l00534"></a><span class="lineno"><a class="line" href="../../d6/de8/class_o_n___clipping_plane.html#a235077dd40e118cf916088225be965b1"> 534</a></span>&#160; <a class="code" href="../../d5/dae/class_o_n__3d_vector.html">ON_3dVector</a> zaxis;</div><div class="line"><a name="l00535"></a><span class="lineno"><a class="line" href="../../d6/de8/class_o_n___clipping_plane.html#ac5ebce737f4661ea0a7238bc58de4af6"> 535</a></span>&#160;</div><div class="line"><a name="l00536"></a><span class="lineno"> 536</span>&#160; <span class="comment">// equation of plane</span></div><div class="line"><a name="l00537"></a><span class="lineno"> 537</span>&#160; <a class="code" href="../../dd/d89/class_o_n___plane_equation.html">ON_PlaneEquation</a> plane_equation;</div><div class="line"><a name="l00538"></a><span class="lineno"> 538</span>&#160; <span class="comment">//double equation[4];</span></div><div class="line"><a name="l00539"></a><span class="lineno"> 539</span>&#160;};</div><div class="line"><a name="l00540"></a><span class="lineno"> 540</span>&#160;</div><div class="line"><a name="l00541"></a><span class="lineno"> 541</span>&#160;<span class="keyword">class </span>ON_CLASS <a class="code" href="../../d3/da3/class_o_n___clipping_plane_info.html">ON_ClippingPlaneInfo</a></div><div class="line"><a name="l00542"></a><span class="lineno"> 542</span>&#160;{</div><div class="line"><a name="l00543"></a><span class="lineno"> 543</span>&#160;<span class="keyword">public</span>:</div><div class="line"><a name="l00544"></a><span class="lineno"> 544</span>&#160; <span class="comment">// C++ defaults for construction, destruction, copy construction</span></div><div class="line"><a name="l00545"></a><span class="lineno"> 545</span>&#160; <span class="comment">// and operator= work fine.</span></div><div class="line"><a name="l00546"></a><span class="lineno"> 546</span>&#160;</div><div class="line"><a name="l00547"></a><span class="lineno"> 547</span>&#160; <span class="comment">// A point is visible if m_plane_equation.ValueAt(point) &lt;= 0.</span></div><div class="line"><a name="l00548"></a><span class="lineno"> 548</span>&#160; <span class="comment">// (This is the opposite convention from what OpenGL uses.)</span></div><div class="line"><a name="l00549"></a><span class="lineno"> 549</span>&#160; <a class="code" href="../../dd/d89/class_o_n___plane_equation.html">ON_PlaneEquation</a> m_plane_equation;</div><div class="line"><a name="l00550"></a><span class="lineno"> 550</span>&#160; <a class="code" href="../../d8/db4/struct_o_n___u_u_i_d__struct.html">ON_UUID</a> m_plane_id;</div><div class="line"><a name="l00551"></a><span class="lineno"> 551</span>&#160; <span class="keywordtype">bool</span> m_bEnabled;</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; <span class="keywordtype">void</span> Default();</div><div class="line"><a name="l00554"></a><span class="lineno"> 554</span>&#160; <span class="keywordtype">bool</span> Write( <a class="code" href="../../db/d16/class_o_n___binary_archive.html">ON_BinaryArchive</a>&amp; ) <span class="keyword">const</span>;</div><div class="line"><a name="l00555"></a><span class="lineno"> 555</span>&#160; <span class="keywordtype">bool</span> Read( <a class="code" href="../../db/d16/class_o_n___binary_archive.html">ON_BinaryArchive</a>&amp; );</div><div class="line"><a name="l00556"></a><span class="lineno"> 556</span>&#160;};</div><div class="line"><a name="l00557"></a><span class="lineno"> 557</span>&#160;</div><div class="line"><a name="l00558"></a><span class="lineno"> 558</span>&#160;<span class="keyword">class </span>ON_CLASS ON_ClippingPlane</div><div class="line"><a name="l00559"></a><span class="lineno"> 559</span>&#160;{</div><div class="line"><a name="l00560"></a><span class="lineno"> 560</span>&#160;<span class="keyword">public</span>:</div><div class="line"><a name="l00561"></a><span class="lineno"> 561</span>&#160; ON_ClippingPlane();</div><div class="line"><a name="l00562"></a><span class="lineno"> 562</span>&#160; ~ON_ClippingPlane();</div><div class="line"><a name="l00563"></a><span class="lineno"> 563</span>&#160;</div><div class="line"><a name="l00564"></a><span class="lineno"> 564</span>&#160; <span class="keywordtype">void</span> Default();</div><div class="line"><a name="l00565"></a><span class="lineno"> 565</span>&#160;</div><div class="line"><a name="l00566"></a><span class="lineno"> 566</span>&#160; <a class="code" href="../../d4/d48/class_o_n___plane.html">ON_Plane</a> m_plane;</div><div class="line"><a name="l00567"></a><span class="lineno"> 567</span>&#160; <a class="code" href="../../db/dbc/class_o_n___uuid_list.html">ON_UuidList</a> m_viewport_ids; <span class="comment">//ids of viewports that this clipping plane &quot;clips&quot;</span></div><div class="line"><a name="l00568"></a><span class="lineno"> 568</span>&#160; <a class="code" href="../../d8/db4/struct_o_n___u_u_i_d__struct.html">ON_UUID</a> m_plane_id;</div><div class="line"><a name="l00569"></a><span class="lineno"> 569</span>&#160; <span class="keywordtype">bool</span> m_bEnabled; <span class="comment">// true if this clipping plane is active</span></div><div class="line"><a name="l00570"></a><span class="lineno"> 570</span>&#160;</div><div class="line"><a name="l00571"></a><span class="lineno"> 571</span>&#160; <a class="code" href="../../d3/da3/class_o_n___clipping_plane_info.html">ON_ClippingPlaneInfo</a> ClippingPlaneInfo() <span class="keyword">const</span>;</div><div class="line"><a name="l00572"></a><span class="lineno"> 572</span>&#160;</div><div class="line"><a name="l00573"></a><span class="lineno"> 573</span>&#160; <span class="keywordtype">bool</span> Read( <span class="keyword">class</span> <a class="code" href="../../db/d16/class_o_n___binary_archive.html">ON_BinaryArchive</a>&amp; );</div><div class="line"><a name="l00574"></a><span class="lineno"> 574</span>&#160; <span class="keywordtype">bool</span> Write( <span class="keyword">class</span> <a class="code" href="../../db/d16/class_o_n___binary_archive.html">ON_BinaryArchive</a>&amp; ) <span class="keyword">const</span>;</div><div class="line"><a name="l00575"></a><span class="lineno"> 575</span>&#160;};</div><div class="line"><a name="l00576"></a><span class="lineno"> 576</span>&#160;</div><div class="line"><a name="l00577"></a><span class="lineno"> 577</span>&#160;</div><div class="line"><a name="l00578"></a><span class="lineno"> 578</span>&#160;<span class="preprocessor">#if defined(ON_DLL_TEMPLATE)</span></div><div class="line"><a name="l00579"></a><span class="lineno"> 579</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_Plane&gt;</a>;</div><div class="line"><a name="l00580"></a><span class="lineno"> 580</span>&#160;ON_DLL_TEMPLATE <span class="keyword">template</span> <span class="keyword">class </span>ON_CLASS <a class="code" href="../../dd/d40/class_o_n___class_array.html">ON_ClassArray&lt;ON_ClippingPlane&gt;</a>;</div><div class="line"><a name="l00581"></a><span class="lineno"> 581</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_ClippingPlaneInfo&gt;</a>;</div><div class="line"><a name="l00582"></a><span class="lineno"> 582</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00583"></a><span class="lineno"> 583</span>&#160;</div><div class="line"><a name="l00584"></a><span class="lineno"> 584</span>&#160;<span class="keyword">extern</span> ON_EXTERN_DECL <span class="keyword">const</span> <a class="code" href="../../d4/d48/class_o_n___plane.html">ON_Plane</a> ON_xy_plane;</div><div class="line"><a name="l00585"></a><span class="lineno"> 585</span>&#160;<span class="keyword">extern</span> ON_EXTERN_DECL <span class="keyword">const</span> <a class="code" href="../../d4/d48/class_o_n___plane.html">ON_Plane</a> ON_yz_plane;</div><div class="line"><a name="l00586"></a><span class="lineno"> 586</span>&#160;<span class="keyword">extern</span> ON_EXTERN_DECL <span class="keyword">const</span> <a class="code" href="../../d4/d48/class_o_n___plane.html">ON_Plane</a> ON_zx_plane;</div><div class="line"><a name="l00587"></a><span class="lineno"> 587</span>&#160;</div><div class="line"><a name="l00588"></a><span class="lineno"> 588</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00589"></a><span class="lineno"> 589</span>&#160;<span class="comment">Description:</span></div><div class="line"><a name="l00590"></a><span class="lineno"> 590</span>&#160;<span class="comment"> Get a convex hull of a set of 3d points.</span></div><div class="line"><a name="l00591"></a><span class="lineno"> 591</span>&#160;<span class="comment">Parameters:</span></div><div class="line"><a name="l00592"></a><span class="lineno"> 592</span>&#160;<span class="comment"> points - [in]</span></div><div class="line"><a name="l00593"></a><span class="lineno"> 593</span>&#160;<span class="comment"> List of points. This function can handle tens of points</span></div><div class="line"><a name="l00594"></a><span class="lineno"> 594</span>&#160;<span class="comment"> but is too slow for hundreds of points.</span></div><div class="line"><a name="l00595"></a><span class="lineno"> 595</span>&#160;<span class="comment"> hull -[out]</span></div><div class="line"><a name="l00596"></a><span class="lineno"> 596</span>&#160;<span class="comment"> Equations of the sides of the convex hull are appended to</span></div><div class="line"><a name="l00597"></a><span class="lineno"> 597</span>&#160;<span class="comment"> this list. </span></div><div class="line"><a name="l00598"></a><span class="lineno"> 598</span>&#160;<span class="comment"> A point P is inside the hull if hull[i].ValueAt(P) &lt;= 0 for</span></div><div class="line"><a name="l00599"></a><span class="lineno"> 599</span>&#160;<span class="comment"> every plane equation.</span></div><div class="line"><a name="l00600"></a><span class="lineno"> 600</span>&#160;<span class="comment">Returns:</span></div><div class="line"><a name="l00601"></a><span class="lineno"> 601</span>&#160;<span class="comment"> Number of equations appended to hull[] array.</span></div><div class="line"><a name="l00602"></a><span class="lineno"> 602</span>&#160;<span class="comment"> If 0, then the points are coincident or collinear.</span></div><div class="line"><a name="l00603"></a><span class="lineno"> 603</span>&#160;<span class="comment"> If 2, then the points are coplanar and the returned</span></div><div class="line"><a name="l00604"></a><span class="lineno"> 604</span>&#160;<span class="comment"> planes are parallel.</span></div><div class="line"><a name="l00605"></a><span class="lineno"> 605</span>&#160;<span class="comment"> If &gt;= 4, then the points are in a 3d convex hull.</span></div><div class="line"><a name="l00606"></a><span class="lineno"> 606</span>&#160;<span class="comment">*/</span></div><div class="line"><a name="l00607"></a><span class="lineno"> 607</span>&#160;ON_DECL</div><div class="line"><a name="l00608"></a><span class="lineno"> 608</span>&#160;<span class="keywordtype">int</span> ON_Get3dConvexHull( </div><div class="line"><a name="l00609"></a><span class="lineno"> 609</span>&#160; <span class="keyword">const</span> <a class="code" href="../../dc/dfe/class_o_n___simple_array.html">ON_SimpleArray&lt;ON_3dPoint&gt;</a> &amp; points, </div><div class="line"><a name="l00610"></a><span class="lineno"> 610</span>&#160; <a class="code" href="../../dc/dfe/class_o_n___simple_array.html">ON_SimpleArray&lt;ON_PlaneEquation&gt;</a> &amp; hull </div><div class="line"><a name="l00611"></a><span class="lineno"> 611</span>&#160; );</div><div class="line"><a name="l00612"></a><span class="lineno"> 612</span>&#160;</div><div class="line"><a name="l00613"></a><span class="lineno"> 613</span>&#160;<span class="preprocessor">#endif</span></div><div class="ttc" id="class_o_n__3d_point_list_ref_html"><div class="ttname"><a href="../../d0/d8a/class_o_n__3d_point_list_ref.html">ON_3dPointListRef</a></div><div class="ttdef"><b>Definition:</b> opennurbs_point.h:2374</div></div>
<div class="ttc" id="class_o_n___clipping_plane_info_html"><div class="ttname"><a href="../../d3/da3/class_o_n___clipping_plane_info.html">ON_ClippingPlaneInfo</a></div><div class="ttdef"><b>Definition:</b> opennurbs_plane.h:507</div></div>
<div class="ttc" id="struct_o_n___u_u_i_d__struct_html"><div class="ttname"><a href="../../d8/db4/struct_o_n___u_u_i_d__struct.html">ON_UUID_struct</a></div><div class="ttdoc">ON_UUID is a 16 byte universally unique identifier. </div><div class="ttdef"><b>Definition:</b> opennurbs_uuid.h:32</div></div>
<div class="ttc" id="class_o_n___uuid_list_html"><div class="ttname"><a href="../../db/dbc/class_o_n___uuid_list.html">ON_UuidList</a></div><div class="ttdoc">The ON_UuidList class provides a tool to efficiently maintain a list of uuids and determine if a uuid...</div><div class="ttdef"><b>Definition:</b> opennurbs_array.h:803</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&lt; ON_3dPoint &gt;</a></div></div>
<div class="ttc" id="class_o_n__3f_point_html"><div class="ttname"><a href="../../d0/dec/class_o_n__3f_point.html">ON_3fPoint</a></div><div class="ttdef"><b>Definition:</b> opennurbs_fpoint.h:211</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___class_array_html"><div class="ttname"><a href="../../dd/d40/class_o_n___class_array.html">ON_ClassArray</a></div><div class="ttdef"><b>Definition:</b> opennurbs_array.h:409</div></div>
<div class="ttc" id="class_o_n___binary_archive_html"><div class="ttname"><a href="../../db/d16/class_o_n___binary_archive.html">ON_BinaryArchive</a></div><div class="ttdef"><b>Definition:</b> opennurbs_archive.h:1783</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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