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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_CIRCLE_INC_)</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="preprocessor">#define ON_CIRCLE_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"> 20</span>&#160;<span class="keyword">class </span><a class="code" href="../../d3/d6a/class_o_n___nurbs_curve.html">ON_NurbsCurve</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="comment">/*</span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;<span class="comment">Description:</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;<span class="comment"> ON_Circle is a circle in 3d. The cirle is represented by a radius and an </span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;<span class="comment"> orthonormal frame of the plane containing the circle, with origin at the center.</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;<span class="comment"> An Is_Valid() circle has positive radius and an Is_ Valid() plane defining the frame.</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;<span class="comment"> </span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;<span class="comment"> The circle is parameterized by radians from 0 to 2 Pi given by </span></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160;<span class="comment"> t -&gt; center + cos(t)*radius*xaxis + sin(t)*radius*yaxis </span></div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;<span class="comment"> where center, xaxis and yaxis define the orthonormal frame of the circle&#39;s plane. </span></div><div class="line"><a name="l00032"></a><span class="lineno"><a class="line" href="../../d1/d1b/class_o_n___circle.html"> 32</a></span>&#160;<span class="comment">*/</span></div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160;<span class="keyword">class </span>ON_CLASS <a class="code" href="../../d1/d1b/class_o_n___circle.html">ON_Circle</a></div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160;{</div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160;<span class="keyword">public</span>:</div><div class="line"><a name="l00036"></a><span class="lineno"><a class="line" href="../../d1/d1b/class_o_n___circle.html#a957bf952e4df87b12c8190140f4f7f24"> 36</a></span>&#160;</div><div class="line"><a name="l00037"></a><span class="lineno"><a class="line" href="../../d1/d1b/class_o_n___circle.html#a48d3fe4c0792b269453768f803e412e7"> 37</a></span>&#160; <a class="code" href="../../d4/d48/class_o_n___plane.html">ON_Plane</a> plane = <a class="code" href="../../d4/d48/class_o_n___plane.html#a8f01670d699285d735436acd2809404d">ON_Plane::World_xy</a>;</div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160; <span class="keywordtype">double</span> radius = 1.0;</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160;</div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160; <a class="code" href="../../d1/d1b/class_o_n___circle.html">ON_Circle</a>() = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160; ~<a class="code" href="../../d1/d1b/class_o_n___circle.html">ON_Circle</a>() = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; <a class="code" href="../../d1/d1b/class_o_n___circle.html">ON_Circle</a>(<span class="keyword">const</span> <a class="code" href="../../d1/d1b/class_o_n___circle.html">ON_Circle</a>&amp;) = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; <a class="code" href="../../d1/d1b/class_o_n___circle.html">ON_Circle</a>&amp; operator=(<span class="keyword">const</span> <a class="code" href="../../d1/d1b/class_o_n___circle.html">ON_Circle</a>&amp;) = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00044"></a><span class="lineno"><a class="line" href="../../d1/d1b/class_o_n___circle.html#abe9b4cbee22108f4f4f349197673a23e"> 44</a></span>&#160;</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; <span class="keyword">static</span> <span class="keyword">const</span> <a class="code" href="../../d1/d1b/class_o_n___circle.html">ON_Circle</a> UnitCircle; <span class="comment">// unit circle in the xy plane</span></div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160;</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; <span class="comment">// Creates a circle in the plane with center at</span></div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; <span class="comment">// plane.origin.</span></div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; <a class="code" href="../../d1/d1b/class_o_n___circle.html">ON_Circle</a>(</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d4/d48/class_o_n___plane.html">ON_Plane</a>&amp; plane,</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; <span class="keywordtype">double</span> radius</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;</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; <span class="comment">// Creates a circle parallel to the world XY plane</span></div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; <span class="comment">// with given center and radius</span></div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; <a class="code" href="../../d1/d1b/class_o_n___circle.html">ON_Circle</a>(</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</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="l00058"></a><span class="lineno"> 58</span>&#160; <span class="keywordtype">double</span> radius</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; );</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160;</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; <span class="comment">// Creates a circle parallel to the plane</span></div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; <span class="comment">// with given center and radius.</span></div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; <a class="code" href="../../d1/d1b/class_o_n___circle.html">ON_Circle</a>(</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d4/d48/class_o_n___plane.html">ON_Plane</a>&amp; plane,</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</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="l00066"></a><span class="lineno"> 66</span>&#160; <span class="keywordtype">double</span> radius</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">// Create a circle through three 2d points.</span></div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; <span class="comment">// The start/end of the circle is at point P.</span></div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; <a class="code" href="../../d1/d1b/class_o_n___circle.html">ON_Circle</a>( <span class="comment">// circle through 3 2d points</span></div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; <span class="keyword">const</span> <a class="code" href="../../dd/dd9/class_o_n__2d_point.html">ON_2dPoint</a>&amp; P,</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; <span class="keyword">const</span> <a class="code" href="../../dd/dd9/class_o_n__2d_point.html">ON_2dPoint</a>&amp; Q,</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; <span class="keyword">const</span> <a class="code" href="../../dd/dd9/class_o_n__2d_point.html">ON_2dPoint</a>&amp; R</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; );</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160;</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; <span class="comment">// Create a circle through three 3d points.</span></div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; <span class="comment">// The start/end of the circle is at point P.</span></div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; <a class="code" href="../../d1/d1b/class_o_n___circle.html">ON_Circle</a>(</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; P,</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; Q,</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; R</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; );</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160;</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; <span class="comment">// Creates a circle in the plane with center at</span></div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; <span class="comment">// plane.origin.</span></div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; <span class="keywordtype">bool</span> Create(</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d4/d48/class_o_n___plane.html">ON_Plane</a>&amp; plane,</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160; <span class="keywordtype">double</span> radius</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160; );</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160;</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; <span class="comment">// Creates a circle parallel to the world XY plane</span></div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; <span class="comment">// with given center and radius</span></div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; <span class="keywordtype">bool</span> Create(</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</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="l00096"></a><span class="lineno"> 96</span>&#160; <span class="keywordtype">double</span> radius</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160; );</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160;</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160; <span class="comment">// Creates a circle parallel to the plane</span></div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; <span class="comment">// with given centr and radius.</span></div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; <span class="keywordtype">bool</span> Create(</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d4/d48/class_o_n___plane.html">ON_Plane</a>&amp; plane,</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</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="l00104"></a><span class="lineno"> 104</span>&#160; <span class="keywordtype">double</span> radius</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160; );</div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160;</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160; <span class="comment">// Create a circle through three 2d points.</span></div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160; <span class="comment">// The start/end of the circle is at point P.</span></div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160; <span class="keywordtype">bool</span> Create( <span class="comment">// circle through 3 2d points</span></div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160; <span class="keyword">const</span> <a class="code" href="../../dd/dd9/class_o_n__2d_point.html">ON_2dPoint</a>&amp; P,</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160; <span class="keyword">const</span> <a class="code" href="../../dd/dd9/class_o_n__2d_point.html">ON_2dPoint</a>&amp; Q,</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160; <span class="keyword">const</span> <a class="code" href="../../dd/dd9/class_o_n__2d_point.html">ON_2dPoint</a>&amp; R</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160; );</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160;</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160; <span class="comment">// Create a circle through three 3d points.</span></div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160; <span class="comment">// The start/end of the circle is at point P.</span></div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160; <span class="keywordtype">bool</span> Create(</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; P,</div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; Q,</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; R</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;</div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160; <span class="comment">// Create a circle from two 2d points and a </span></div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160; <span class="comment">// tangent at the first point.</span></div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160; <span class="comment">// The start/end of the circle is at point P.</span></div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160; <span class="keywordtype">bool</span> Create(</div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160; <span class="keyword">const</span> <a class="code" href="../../dd/dd9/class_o_n__2d_point.html">ON_2dPoint</a>&amp; P,</div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160; <span class="keyword">const</span> <a class="code" href="../../da/d08/class_o_n__2d_vector.html">ON_2dVector</a>&amp; tangent_at_P,</div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160; <span class="keyword">const</span> <a class="code" href="../../dd/dd9/class_o_n__2d_point.html">ON_2dPoint</a>&amp; Q</div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160; );</div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160;</div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160; <span class="comment">// Create a circle from two 3d points and a </span></div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160; <span class="comment">// tangent at the first point.</span></div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160; <span class="comment">// The start/end of the circle is at point P.</span></div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160; <span class="keywordtype">bool</span> Create(</div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; P,</div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d5/dae/class_o_n__3d_vector.html">ON_3dVector</a>&amp; tangent_at_P,</div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; Q</div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160; );</div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160;</div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160; <span class="comment">// A Valid circle has m_radius&gt;0 and m_plane.IsValid().</span></div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160; <span class="keywordtype">bool</span> IsValid() <span class="keyword">const</span>;</div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160;</div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160; <span class="comment">//bool UpdatePoints(); // sets m_point[] to have valid points</span></div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160;</div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160; <span class="keywordtype">bool</span> IsInPlane( <span class="keyword">const</span> <a class="code" href="../../d4/d48/class_o_n___plane.html">ON_Plane</a>&amp;, <span class="keywordtype">double</span> = ON_ZERO_TOLERANCE ) <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="keywordtype">double</span> Radius() <span class="keyword">const</span>;</div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160; <span class="keywordtype">double</span> Diameter() <span class="keyword">const</span>;</div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160; <span class="keywordtype">double</span> Circumference() <span class="keyword">const</span>;</div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp; Center() <span class="keyword">const</span>;</div><div class="line"><a name="l00152"></a><span class="lineno"> 152</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="l00153"></a><span class="lineno"> 153</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d4/d48/class_o_n___plane.html">ON_Plane</a>&amp; Plane() <span class="keyword">const</span>; <span class="comment">// plane containing circle</span></div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160;</div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160; <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="l00156"></a><span class="lineno"> 156</span>&#160;</div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160; <span class="comment">/*</span></div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160;<span class="comment"> Get tight bounding box.</span></div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160;<span class="comment"> tight_bbox - [in/out] tight bounding box</span></div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160;<span class="comment"> bGrowBox -[in] (default=false) </span></div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160;<span class="comment"> If true and the input tight_bbox is valid, then returned</span></div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>&#160;<span class="comment"> tight_bbox is the union of the input tight_bbox and the </span></div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160;<span class="comment"> arc&#39;s tight bounding box.</span></div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>&#160;<span class="comment"> xform -[in] (default=nullptr)</span></div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160;<span class="comment"> If not nullptr, the tight bounding box of the transformed</span></div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span>&#160;<span class="comment"> arc is calculated. The arc is not modified.</span></div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>&#160;<span class="comment"> Returns:</span></div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span>&#160;<span class="comment"> True if a valid tight_bbox is returned.</span></div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160; <span class="keywordtype">bool</span> GetTightBoundingBox( </div><div class="line"><a name="l00173"></a><span class="lineno"> 173</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="l00174"></a><span class="lineno"> 174</span>&#160; <span class="keywordtype">bool</span> bGrowBox = <span class="keyword">false</span>,</div><div class="line"><a name="l00175"></a><span class="lineno"> 175</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="l00176"></a><span class="lineno"> 176</span>&#160; ) <span class="keyword">const</span>;</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> Transform( <span class="keyword">const</span> <a class="code" href="../../d3/d13/class_o_n___xform.html">ON_Xform</a>&amp; );</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">// Circles use trigonometric parameterization</span></div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>&#160; <span class="comment">// t -&gt; center + cos(t)*radius*xaxis + sin(t)*radius*yaxis</span></div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>&#160; <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a> PointAt( </div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160; <span class="keywordtype">double</span> <span class="comment">// evaluation parameter</span></div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160; ) <span class="keyword">const</span>;</div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160; <a class="code" href="../../d5/dae/class_o_n__3d_vector.html">ON_3dVector</a> DerivativeAt( </div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span>&#160; <span class="keywordtype">int</span>, <span class="comment">// derivative (&gt;=0)</span></div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span>&#160; <span class="keywordtype">double</span> <span class="comment">// evaluation parameter</span></div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span>&#160; ) <span class="keyword">const</span>;</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; <a class="code" href="../../d5/dae/class_o_n__3d_vector.html">ON_3dVector</a> TangentAt(<span class="keywordtype">double</span>) <span class="keyword">const</span>;</div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span>&#160;</div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span>&#160; <span class="comment">// returns parameters of point on circle that is closest to given point</span></div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span>&#160; <span class="keywordtype">bool</span> ClosestPointTo( </div><div class="line"><a name="l00194"></a><span class="lineno"> 194</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="l00195"></a><span class="lineno"> 195</span>&#160; <span class="keywordtype">double</span>* t</div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span>&#160; ) <span class="keyword">const</span>;</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; <span class="comment">// returns point on circle that is closest to given point</span></div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span>&#160; <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a> ClosestPointTo( </div><div class="line"><a name="l00200"></a><span class="lineno"> 200</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="l00201"></a><span class="lineno"> 201</span>&#160; ) <span class="keyword">const</span>;</div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span>&#160;</div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span>&#160; <span class="comment">// evaluate circle&#39;s implicit equation in plane</span></div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span>&#160; <span class="keywordtype">double</span> EquationAt( <span class="keyword">const</span> <a class="code" href="../../dd/dd9/class_o_n__2d_point.html">ON_2dPoint</a>&amp; plane_point ) <span class="keyword">const</span>;</div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span>&#160;</div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span>&#160; <a class="code" href="../../da/d08/class_o_n__2d_vector.html">ON_2dVector</a> GradientAt( <span class="keyword">const</span> <a class="code" href="../../dd/dd9/class_o_n__2d_point.html">ON_2dPoint</a>&amp; plane_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; <span class="comment">// rotate circle about its center</span></div><div class="line"><a name="l00209"></a><span class="lineno"> 209</span>&#160; <span class="keywordtype">bool</span> Rotate(</div><div class="line"><a name="l00210"></a><span class="lineno"> 210</span>&#160; <span class="keywordtype">double</span> sin_angle,</div><div class="line"><a name="l00211"></a><span class="lineno"> 211</span>&#160; <span class="keywordtype">double</span> cos_angle,</div><div class="line"><a name="l00212"></a><span class="lineno"> 212</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="l00213"></a><span class="lineno"> 213</span>&#160; );</div><div class="line"><a name="l00214"></a><span class="lineno"> 214</span>&#160;</div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span>&#160; <span class="keywordtype">bool</span> Rotate(</div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span>&#160; <span class="keywordtype">double</span> angle_in_radians,</div><div class="line"><a name="l00217"></a><span class="lineno"> 217</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="l00218"></a><span class="lineno"> 218</span>&#160; );</div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span>&#160;</div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span>&#160; <span class="comment">// rotate circle about a point and axis</span></div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span>&#160; <span class="keywordtype">bool</span> Rotate(</div><div class="line"><a name="l00222"></a><span class="lineno"> 222</span>&#160; <span class="keywordtype">double</span> sin_angle,</div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span>&#160; <span class="keywordtype">double</span> cos_angle,</div><div class="line"><a name="l00224"></a><span class="lineno"> 224</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="l00225"></a><span class="lineno"> 225</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="l00226"></a><span class="lineno"> 226</span>&#160; );</div><div class="line"><a name="l00227"></a><span class="lineno"> 227</span>&#160;</div><div class="line"><a name="l00228"></a><span class="lineno"> 228</span>&#160; <span class="keywordtype">bool</span> Rotate(</div><div class="line"><a name="l00229"></a><span class="lineno"> 229</span>&#160; <span class="keywordtype">double</span> angle_in_radians,</div><div class="line"><a name="l00230"></a><span class="lineno"> 230</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="l00231"></a><span class="lineno"> 231</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="l00232"></a><span class="lineno"> 232</span>&#160; );</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; <span class="keywordtype">bool</span> Translate(</div><div class="line"><a name="l00235"></a><span class="lineno"> 235</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="l00236"></a><span class="lineno"> 236</span>&#160; );</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; <span class="keywordtype">bool</span> Reverse();</div><div class="line"><a name="l00239"></a><span class="lineno"> 239</span>&#160;</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">// Get a four span rational degree 2 NURBS circle representation</span></div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span>&#160; <span class="comment">// of the circle.</span></div><div class="line"><a name="l00243"></a><span class="lineno"> 243</span>&#160; <span class="comment">// Returns:</span></div><div class="line"><a name="l00244"></a><span class="lineno"> 244</span>&#160; <span class="comment">// 2 for success, 0 for failure</span></div><div class="line"><a name="l00245"></a><span class="lineno"> 245</span>&#160; <span class="comment">// Remarks:</span></div><div class="line"><a name="l00246"></a><span class="lineno"> 246</span>&#160; <span class="comment">// Note that the parameterization of NURBS curve</span></div><div class="line"><a name="l00247"></a><span class="lineno"> 247</span>&#160; <span class="comment">// does not match circle&#39;s transcendental paramaterization. </span></div><div class="line"><a name="l00248"></a><span class="lineno"> 248</span>&#160; <span class="comment">// Use ON_Circle::GetRadianFromNurbFormParameter() and</span></div><div class="line"><a name="l00249"></a><span class="lineno"> 249</span>&#160; <span class="comment">// ON_Circle::GetParameterFromRadian() to convert between </span></div><div class="line"><a name="l00250"></a><span class="lineno"> 250</span>&#160; <span class="comment">// the NURBS curve parameter and the transcendental parameter.</span></div><div class="line"><a name="l00251"></a><span class="lineno"> 251</span>&#160; <span class="keywordtype">int</span> GetNurbForm(</div><div class="line"><a name="l00252"></a><span class="lineno"> 252</span>&#160; <a class="code" href="../../d3/d6a/class_o_n___nurbs_curve.html">ON_NurbsCurve</a>&amp; nurbs_curve</div><div class="line"><a name="l00253"></a><span class="lineno"> 253</span>&#160; ) <span class="keyword">const</span>; </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">/*</span></div><div class="line"><a name="l00256"></a><span class="lineno"> 256</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00257"></a><span class="lineno"> 257</span>&#160;<span class="comment"> Convert a NURBS curve circle parameter to a circle radians parameter.</span></div><div class="line"><a name="l00258"></a><span class="lineno"> 258</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00259"></a><span class="lineno"> 259</span>&#160;<span class="comment"> nurbs_parameter - [in]</span></div><div class="line"><a name="l00260"></a><span class="lineno"> 260</span>&#160;<span class="comment"> circle_radians_parameter - [out]</span></div><div class="line"><a name="l00261"></a><span class="lineno"> 261</span>&#160;<span class="comment"> Example:</span></div><div class="line"><a name="l00262"></a><span class="lineno"> 262</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00263"></a><span class="lineno"> 263</span>&#160;<span class="comment"> ON_Circle circle = ...;</span></div><div class="line"><a name="l00264"></a><span class="lineno"> 264</span>&#160;<span class="comment"> double nurbs_t = 1.2345; // some number in interval (0,2.0*ON_PI).</span></div><div class="line"><a name="l00265"></a><span class="lineno"> 265</span>&#160;<span class="comment"> double circle_t;</span></div><div class="line"><a name="l00266"></a><span class="lineno"> 266</span>&#160;<span class="comment"> circle.GetRadianFromNurbFormParameter( nurbs_t, &amp;circle_t );</span></div><div class="line"><a name="l00267"></a><span class="lineno"> 267</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00268"></a><span class="lineno"> 268</span>&#160;<span class="comment"> ON_NurbsCurve nurbs_curve;</span></div><div class="line"><a name="l00269"></a><span class="lineno"> 269</span>&#160;<span class="comment"> circle.GetNurbsForm( nurbs_curve );</span></div><div class="line"><a name="l00270"></a><span class="lineno"> 270</span>&#160;<span class="comment"> circle_pt = circle.PointAt(circle_t);</span></div><div class="line"><a name="l00271"></a><span class="lineno"> 271</span>&#160;<span class="comment"> nurbs_pt = nurbs_curve.PointAt(nurbs_t);</span></div><div class="line"><a name="l00272"></a><span class="lineno"> 272</span>&#160;<span class="comment"> // circle_pt and nurbs_pt will be the same</span></div><div class="line"><a name="l00273"></a><span class="lineno"> 273</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00274"></a><span class="lineno"> 274</span>&#160;<span class="comment"> Remarks:</span></div><div class="line"><a name="l00275"></a><span class="lineno"> 275</span>&#160;<span class="comment"> The NURBS curve parameter is with respect to the NURBS curve</span></div><div class="line"><a name="l00276"></a><span class="lineno"> 276</span>&#160;<span class="comment"> created by ON_Circle::GetNurbForm. At nurbs parameter values of </span></div><div class="line"><a name="l00277"></a><span class="lineno"> 277</span>&#160;<span class="comment"> 0.0, 0.5*ON_PI, ON_PI, 1.5*ON_PI, and 2.0*ON_PI, the nurbs</span></div><div class="line"><a name="l00278"></a><span class="lineno"> 278</span>&#160;<span class="comment"> parameter and radian parameter are the same. At all other</span></div><div class="line"><a name="l00279"></a><span class="lineno"> 279</span>&#160;<span class="comment"> values the nurbs and radian parameter values are different.</span></div><div class="line"><a name="l00280"></a><span class="lineno"> 280</span>&#160;<span class="comment"> See Also:</span></div><div class="line"><a name="l00281"></a><span class="lineno"> 281</span>&#160;<span class="comment"> ON_Circle::GetNurbFormParameterFromRadian</span></div><div class="line"><a name="l00282"></a><span class="lineno"> 282</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00283"></a><span class="lineno"> 283</span>&#160; <span class="keywordtype">bool</span> GetRadianFromNurbFormParameter(</div><div class="line"><a name="l00284"></a><span class="lineno"> 284</span>&#160; <span class="keywordtype">double</span> nurbs_parameter,</div><div class="line"><a name="l00285"></a><span class="lineno"> 285</span>&#160; <span class="keywordtype">double</span>* circle_radians_parameter</div><div class="line"><a name="l00286"></a><span class="lineno"> 286</span>&#160; ) <span class="keyword">const</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; <span class="comment">/*</span></div><div class="line"><a name="l00289"></a><span class="lineno"> 289</span>&#160;<span class="comment"> Description:</span></div><div class="line"><a name="l00290"></a><span class="lineno"> 290</span>&#160;<span class="comment"> Convert a circle radians parameter to a NURBS curve circle parameter.</span></div><div class="line"><a name="l00291"></a><span class="lineno"> 291</span>&#160;<span class="comment"> Parameters:</span></div><div class="line"><a name="l00292"></a><span class="lineno"> 292</span>&#160;<span class="comment"> circle_radians_parameter - [in] 0.0 to 2.0*ON_PI</span></div><div class="line"><a name="l00293"></a><span class="lineno"> 293</span>&#160;<span class="comment"> nurbs_parameter - [out]</span></div><div class="line"><a name="l00294"></a><span class="lineno"> 294</span>&#160;<span class="comment"> Example:</span></div><div class="line"><a name="l00295"></a><span class="lineno"> 295</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00296"></a><span class="lineno"> 296</span>&#160;<span class="comment"> ON_Circle circle = ...;</span></div><div class="line"><a name="l00297"></a><span class="lineno"> 297</span>&#160;<span class="comment"> double circle_t = 1.2345; // some number in interval (0,2.0*ON_PI).</span></div><div class="line"><a name="l00298"></a><span class="lineno"> 298</span>&#160;<span class="comment"> double nurbs_t;</span></div><div class="line"><a name="l00299"></a><span class="lineno"> 299</span>&#160;<span class="comment"> circle.GetNurbFormParameterFromRadian( circle_t, &amp;nurbs_t );</span></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"> 301</span>&#160;<span class="comment"> ON_NurbsCurve nurbs_curve;</span></div><div class="line"><a name="l00302"></a><span class="lineno"> 302</span>&#160;<span class="comment"> circle.GetNurbsForm( nurbs_curve );</span></div><div class="line"><a name="l00303"></a><span class="lineno"> 303</span>&#160;<span class="comment"> circle_pt = circle.PointAt(circle_t);</span></div><div class="line"><a name="l00304"></a><span class="lineno"> 304</span>&#160;<span class="comment"> nurbs_pt = nurbs_curve.PointAt(nurbs_t);</span></div><div class="line"><a name="l00305"></a><span class="lineno"> 305</span>&#160;<span class="comment"> // circle_pt and nurbs_pt will be the same</span></div><div class="line"><a name="l00306"></a><span class="lineno"> 306</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00307"></a><span class="lineno"> 307</span>&#160;<span class="comment"> Remarks:</span></div><div class="line"><a name="l00308"></a><span class="lineno"> 308</span>&#160;<span class="comment"> The NURBS curve parameter is with respect to the NURBS curve</span></div><div class="line"><a name="l00309"></a><span class="lineno"> 309</span>&#160;<span class="comment"> created by ON_Circle::GetNurbForm. At radian values of </span></div><div class="line"><a name="l00310"></a><span class="lineno"> 310</span>&#160;<span class="comment"> 0.0, 0.5*ON_PI, ON_PI, 1.5*ON_PI, and 2.0*ON_PI, the nurbs</span></div><div class="line"><a name="l00311"></a><span class="lineno"> 311</span>&#160;<span class="comment"> parameter and radian parameter are the same. At all other</span></div><div class="line"><a name="l00312"></a><span class="lineno"> 312</span>&#160;<span class="comment"> values the nurbs and radian parameter values are different.</span></div><div class="line"><a name="l00313"></a><span class="lineno"> 313</span>&#160;<span class="comment"> See Also:</span></div><div class="line"><a name="l00314"></a><span class="lineno"> 314</span>&#160;<span class="comment"> ON_Circle::GetNurbFormParameterFromRadian</span></div><div class="line"><a name="l00315"></a><span class="lineno"> 315</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00316"></a><span class="lineno"> 316</span>&#160; <span class="keywordtype">bool</span> GetNurbFormParameterFromRadian(</div><div class="line"><a name="l00317"></a><span class="lineno"> 317</span>&#160; <span class="keywordtype">double</span> circle_radians_parameter,</div><div class="line"><a name="l00318"></a><span class="lineno"> 318</span>&#160; <span class="keywordtype">double</span>* nurbs_parameter</div><div class="line"><a name="l00319"></a><span class="lineno"> 319</span>&#160; ) <span class="keyword">const</span>;</div><div class="line"><a name="l00320"></a><span class="lineno"> 320</span>&#160;</div><div class="line"><a name="l00321"></a><span class="lineno"> 321</span>&#160;};</div><div class="line"><a name="l00322"></a><span class="lineno"> 322</span>&#160;</div><div class="line"><a name="l00323"></a><span class="lineno"> 323</span>&#160;</div><div class="line"><a name="l00324"></a><span class="lineno"> 324</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00325"></a><span class="lineno"> 325</span>&#160;</div><div class="ttc" id="class_o_n___circle_html"><div class="ttname"><a href="../../d1/d1b/class_o_n___circle.html">ON_Circle</a></div><div class="ttdoc">ON_Circle is a circle in 3d. The cirle is represented by a radius and an orthonormal frame of the pla...</div><div class="ttdef"><b>Definition:</b> opennurbs_circle.h:32</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___plane_html_a8f01670d699285d735436acd2809404d"><div class="ttname"><a href="../../d4/d48/class_o_n___plane.html#a8f01670d699285d735436acd2809404d">ON_Plane::World_xy</a></div><div class="ttdeci">static const ON_Plane World_xy</div><div class="ttdoc">world plane coordinate system ON_Plane(ON_3dPoint::Origin, ON_3dVector::XAxis, ON_3dVector::YAxis); ...</div><div class="ttdef"><b>Definition:</b> opennurbs_plane.h:483</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___nurbs_curve_html"><div class="ttname"><a href="../../d3/d6a/class_o_n___nurbs_curve.html">ON_NurbsCurve</a></div><div class="ttdef"><b>Definition:</b> opennurbs_nurbscurve.h:26</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__2d_vector_html"><div class="ttname"><a href="../../da/d08/class_o_n__2d_vector.html">ON_2dVector</a></div><div class="ttdef"><b>Definition:</b> opennurbs_point.h:839</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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