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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) 1993-2011 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;<span class="comment"></span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="comment">////////////////////////////////////////////////////////////////</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="comment"></span><span class="comment">// </span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="comment">// Definitions of ON_GL() functions that demonstrate how to</span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="comment">// use GL to display OpenNURBS objects. </span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="comment">// </span><span class="comment"></span></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"></span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;<span class="preprocessor">#include &quot;opennurbs.h&quot;</span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;</div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;<span class="preprocessor">#if defined(ON_COMPILER_MSC)</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;</div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;<span class="comment">// Tested compilers:</span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;<span class="comment">// Microsoft Developer Studio 6.0</span></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160;<span class="comment">// Microsoft Visual Studio 2005</span></div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;<span class="comment">// Support for other Windows compilers is not available.</span></div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160;</div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160;<span class="comment">// Windows Open GL files require windows.h to be included before the</span></div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160;<span class="comment">// Open GL header files.</span></div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160;<span class="preprocessor">#pragma ON_PRAGMA_WARNING_PUSH</span></div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160;<span class="preprocessor">#include &lt;windows.h&gt;</span></div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160;<span class="preprocessor">#include &lt;GL/gl.h&gt;</span> <span class="comment">// Open GL basic definitions</span></div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160;<span class="preprocessor">#include &lt;GL/glu.h&gt;</span> <span class="comment">// Open GL utilities (for GL NURBS stuff)</span></div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160;<span class="preprocessor">#pragma ON_PRAGMA_WARNING_POP</span></div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160;</div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160;<span class="preprocessor">#elif defined(ON_COMPILER_CLANG)</span></div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160;</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160;<span class="comment">// Tested compilers:</span></div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160;<span class="comment">// Apple Xcode 2.4.1</span></div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160;<span class="comment">// Support for other Apple compilers is not available.</span></div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160;<span class="preprocessor">#include &lt;GLUT/glut.h&gt;</span> <span class="comment">// Open GL auxillary functions</span></div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160;</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160;<span class="preprocessor">#else</span></div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160;</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160;<span class="comment">// Unsupported compiler:</span></div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160;<span class="comment">// Support for other compilers is not available</span></div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160;<span class="preprocessor">#include &lt;GL/gl.h&gt;</span> <span class="comment">// Open GL basic definitions</span></div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160;<span class="preprocessor">#include &lt;GL/glu.h&gt;</span> <span class="comment">// Open GL utilities (for GL NURBS stuff)</span></div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160;</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160;</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160;</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160;<span class="preprocessor">#if !defined(OPENNURBS_GL_INC_)</span></div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160;<span class="preprocessor">#define OPENNURBS_GL_INC_</span></div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160;</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160;</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160;<span class="comment">// Use ON_GL( const ON_Point, ...) to render single points.</span></div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160;<span class="keywordtype">void</span> ON_GL( </div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d0/d8d/class_o_n___point.html">ON_Point</a>&amp;</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">// Use ON_GL( const ON_PointCloud, ...) to render Rhino point sets.</span></div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160;<span class="keywordtype">void</span> ON_GL( </div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; <span class="keyword">const</span> <a class="code" href="../../df/df2/class_o_n___point_cloud.html">ON_PointCloud</a>&amp;</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; );</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160;</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160;<span class="comment">// Use ON_GL( const ON_Mesh&amp;, ...) to render OpenNURBS meshes.</span></div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160;<span class="keywordtype">void</span> ON_GL( </div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; <span class="keyword">const</span> <a class="code" href="../../df/d11/class_o_n___mesh.html">ON_Mesh</a>&amp;</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">// Use ON_GL( const ON_Brep&amp;, ...) to render OpenNURBS b-reps.</span></div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160;<span class="keywordtype">void</span> ON_GL( </div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d9/d96/class_o_n___brep.html">ON_Brep</a>&amp;,</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; GLUnurbsObj*</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; );</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160;</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160;<span class="comment">// must be bracketed by calls to glBegin(GL_POINTS) / glEnd()</span></div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160;<span class="keywordtype">void</span> ON_GL(</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d2/d35/class_o_n__3d_point.html">ON_3dPoint</a>&amp;</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; );</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160;</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160;<span class="keywordtype">void</span> ON_GL( </div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d4/d5a/class_o_n___curve.html">ON_Curve</a>&amp;, <span class="comment">// </span></div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160; GLUnurbsObj*, <span class="comment">// created with gluNewNurbsRenderer</span></div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; GLenum = 0, <span class="comment">// type of curve (if 0, type is automatically set)</span></div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; <span class="keywordtype">double</span>[][4] = <span class="keyword">nullptr</span> <span class="comment">// optional transformation applied to curve</span></div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; );</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160;</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160;<span class="comment">// must be bracketed by calls to gluBeginSurface( nobj )/gluEndSurface( nobj )</span></div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160;<span class="keywordtype">void</span> ON_GL( </div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160; <span class="keyword">const</span> <a class="code" href="../../da/da0/class_o_n___surface.html">ON_Surface</a>&amp;, <span class="comment">// </span></div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160; GLUnurbsObj* <span class="comment">// created with gluNewNurbsRenderer</span></div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160; );</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160;</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160;<span class="comment">// Use ON_GL( const ON_NurbsCurve&amp;,...) in place of</span></div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160;<span class="comment">// gluNurbsCurve(). See your system&#39;s gluNurbsCurve() documentation</span></div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160;<span class="comment">// for details. In particular, for 3d curves the call to </span></div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160;<span class="comment">// ON_GL( const ON_NurbsCurve&amp;, nobj,...) should appear inside</span></div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160;<span class="comment">// of a gluBeginCurve( nobj )/gluEndCurve( nobj ) pair.</span></div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160;<span class="comment">// Generally, the GL &quot;type&quot; should be set using the formula</span></div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160;<span class="comment">// ON_NurbsCurve:IsRational()</span></div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160;<span class="comment">// ? GL_MAP1_VERTEX_4 </span></div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160;<span class="comment">// : GL_MAP1_VERTEX_3;</span></div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160;<span class="keywordtype">void</span> ON_GL( </div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d3/d6a/class_o_n___nurbs_curve.html">ON_NurbsCurve</a>&amp;, <span class="comment">// </span></div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160; GLUnurbsObj*, <span class="comment">// created with gluNewNurbsRenderer</span></div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160; GLenum = 0, <span class="comment">// type of curve (if 0, type is automatically set)</span></div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160; <span class="keywordtype">int</span> = 1, <span class="comment">// bPermitKnotScaling - If true, curve knots may</span></div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160; <span class="comment">// be rescaled to avoid knot vectors GL cannot handle.</span></div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160; <span class="keywordtype">double</span>* = <span class="keyword">nullptr</span>, <span class="comment">// knot_scale[2] - If not nullptr and bPermitKnotScaling,</span></div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160; <span class="comment">// the scaling applied to the knot vector is</span></div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160; <span class="comment">// returned here.</span></div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160; <span class="keywordtype">double</span>[][4] = <span class="keyword">nullptr</span> <span class="comment">// optional transformation applied to curve</span></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="keywordtype">void</span> ON_GL( <span class="comment">// low level NURBS curve renderer</span></div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160; <span class="keywordtype">int</span>, <span class="keywordtype">int</span>, <span class="keywordtype">int</span>, <span class="keywordtype">int</span>, <span class="comment">// dim, is_rat, cv_count, order</span></div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160; <span class="keyword">const</span> <span class="keywordtype">double</span>*, <span class="comment">// knot_vector[]</span></div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160; <span class="keywordtype">int</span>, <span class="comment">// cv_stride</span></div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160; <span class="keyword">const</span> <span class="keywordtype">double</span>*, <span class="comment">// cv</span></div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160; GLUnurbsObj*, <span class="comment">// created with gluNewNurbsRenderer</span></div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160; GLenum = 0, <span class="comment">// type of curve (if 0, type is automatically set)</span></div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160; <span class="keywordtype">int</span> = 1, <span class="comment">// bPermitKnotScaling - If true, curve knots may</span></div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160; <span class="comment">// be rescaled to avoid knot vectors GL cannot handle.</span></div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160; <span class="keywordtype">double</span>* = <span class="keyword">nullptr</span>, <span class="comment">// knot_scale[2] - If not nullptr and bPermitKnotScaling,</span></div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160; <span class="comment">// the scaling applied to the knot vector is</span></div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160; <span class="comment">// returned here.</span></div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160; <span class="keywordtype">double</span>[][4] = <span class="keyword">nullptr</span> <span class="comment">// optional transformation applied to curve</span></div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160; );</div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160;</div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160;</div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160;<span class="comment">// Use ON_GL( const ON_NurbsSurface&amp;,...) in place of</span></div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160;<span class="comment">// gluNurbsSurface(). See your system&#39;s gluNurbsSurface() documentation</span></div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160;<span class="comment">// for details. In particular, the call to </span></div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160;<span class="comment">// ON_GL( const ON_NurbsSurface&amp;, nobj, ...) should appear inside</span></div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160;<span class="comment">// of a gluBeginSurface( nobj )/gluEndSurface( nobj ) pair.</span></div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160;<span class="comment">// Generally, the GL &quot;type&quot; should be set using the formula</span></div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160;<span class="comment">// ON_NurbsSurface:IsRational()</span></div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160;<span class="comment">// ? GL_MAP2_VERTEX_4 </span></div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160;<span class="comment">// : GL_MAP2_VERTEX_3;</span></div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160;<span class="keywordtype">void</span> ON_GL( </div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160; <span class="keyword">const</span> <a class="code" href="../../de/ddc/class_o_n___nurbs_surface.html">ON_NurbsSurface</a>&amp;, <span class="comment">// </span></div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160; GLUnurbsObj*, <span class="comment">// created with gluNewNurbsRenderer</span></div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160; GLenum = 0, <span class="comment">// type of surface </span></div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160; <span class="comment">// (if 0, type is automatically set)</span></div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160; <span class="keywordtype">int</span> = 1, <span class="comment">// bPermitKnotScaling - If true, surface knots may</span></div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160; <span class="comment">// be rescaled to avoid knot vectors GL cannot handle.</span></div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160; <span class="keywordtype">double</span>* = <span class="keyword">nullptr</span>, <span class="comment">// knot_scale0[2] - If not nullptr and bPermitKnotScaling,</span></div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160; <span class="comment">// the scaleing applied to the first parameter is</span></div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160; <span class="comment">// returned here.</span></div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160; <span class="keywordtype">double</span>* = <span class="keyword">nullptr</span> <span class="comment">// knot_scale0[2] - If not nullptr and bPermitKnotScaling,</span></div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160; <span class="comment">// the scaleing applied to the second parameter is</span></div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160; <span class="comment">// returned here.</span></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;</div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160;</div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160;<span class="comment">// Use ON_GL( const ON_BrepFace&amp;, nobj ) to render</span></div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>&#160;<span class="comment">// the trimmed NURBS surface that defines a ON_Brep face&#39;s geometry.</span></div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160;<span class="comment">// The call to ON_GL( const ON_BrepFace&amp;, nobj ) should</span></div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>&#160;<span class="comment">// appear inside of a gluBeginSurface( nobj )/gluEndSurface( nobj )</span></div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160;<span class="comment">// pair.</span></div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span>&#160;<span class="keywordtype">void</span> ON_GL( </div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d0/d4c/class_o_n___brep_face.html">ON_BrepFace</a>&amp;, <span class="comment">// </span></div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span>&#160; GLUnurbsObj* <span class="comment">// created with gluNewNurbsRenderer</span></div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>&#160; );</div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160;</div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span>&#160;<span class="comment">// Use ON_GL( const ON_Color ...) to set GL color to OpenNURBS color</span></div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span>&#160;<span class="keywordtype">void</span> ON_GL( <span class="keyword">const</span> <a class="code" href="../../d0/df9/class_o_n___color.html">ON_Color</a>&amp;,</div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160; GLfloat[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;<span class="keywordtype">void</span> ON_GL( <span class="keyword">const</span> <a class="code" href="../../d0/df9/class_o_n___color.html">ON_Color</a>&amp;,</div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160; <span class="keywordtype">double</span>, <span class="comment">// alpha</span></div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span>&#160; GLfloat[4] </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">// Use ON_GL( const ON_Material ...) to set GL material to OpenNURBS material</span></div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160;<span class="keywordtype">void</span> ON_GL( </div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d7/d53/class_o_n___material.html">ON_Material</a>&amp;</div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160; );</div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span>&#160;</div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span>&#160;<span class="keywordtype">void</span> ON_GL( </div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d7/d53/class_o_n___material.html">ON_Material</a>* <span class="comment">// pass nullptr to get OpenNURBS&#39;s default material</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;</div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span>&#160;<span class="comment">// Use ON_GL( const ON_Light, ...) to add OpenNURBS spotlights to</span></div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span>&#160;<span class="comment">// GL lighting model</span></div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span>&#160;<span class="keywordtype">void</span> ON_GL( </div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d0/df3/class_o_n___light.html">ON_Light</a>*, <span class="comment">// pass nullptr to disable the light</span></div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>&#160; GLenum <span class="comment">// GL_LIGHTi where 0 &lt;= i &lt;= GL_MAX_LIGHTS</span></div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span>&#160; <span class="comment">// See glLight*() documentation for details</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="keywordtype">void</span> ON_GL( </div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span>&#160; <span class="keyword">const</span> <a class="code" href="../../d0/df3/class_o_n___light.html">ON_Light</a>&amp;,</div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span>&#160; GLenum <span class="comment">// GL_LIGHTi where 0 &lt;= i &lt;= GL_MAX_LIGHTS</span></div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span>&#160; <span class="comment">// See glLight*() documentation for details</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"></span></div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span>&#160;<span class="comment">//////////////////////////////////////////////////////////////////////////</span></div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span>&#160;<span class="comment"></span><span class="comment">// Use ON_GL( ON_Viewport&amp; ... ) to set the GL projections to match</span></div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span>&#160;<span class="comment">// those used in the OpenNURBS viewport.</span></div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span>&#160;<span class="comment">////////////</span></div><div class="line"><a name="l00209"></a><span class="lineno"> 209</span>&#160;<span class="comment"></span><span class="comment">//</span></div><div class="line"><a name="l00210"></a><span class="lineno"> 210</span>&#160;<span class="comment">// Use ON_GL( ON_Viewport&amp;, in, int, int, int ) to specify the size of the</span></div><div class="line"><a name="l00211"></a><span class="lineno"> 211</span>&#160;<span class="comment">// GL window and loads the GL projection matrix (camera to clip </span></div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span>&#160;<span class="comment">// transformation). If the aspect ratio of the GL window and </span></div><div class="line"><a name="l00213"></a><span class="lineno"> 213</span>&#160;<span class="comment">// ON_Viewport&#39;s frustum do not match, the viewport&#39;s frustum is </span></div><div class="line"><a name="l00214"></a><span class="lineno"> 214</span>&#160;<span class="comment">// adjusted to get things back to 1:1. </span></div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span>&#160;<span class="comment">//</span></div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span>&#160;<span class="comment">// For systems where the upper left corner of a window has </span></div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span>&#160;<span class="comment">// coordinates (0,0) use:</span></div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span>&#160;<span class="comment">// port_left = 0</span></div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span>&#160;<span class="comment">// port_right = width-1</span></div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span>&#160;<span class="comment">// port_bottom = height-1</span></div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span>&#160;<span class="comment">// port_top = 0</span></div><div class="line"><a name="l00222"></a><span class="lineno"> 222</span>&#160;<span class="keywordtype">void</span> ON_GL( <a class="code" href="../../d4/deb/class_o_n___viewport.html">ON_Viewport</a>&amp;,</div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span>&#160; <span class="keywordtype">int</span>, <span class="keywordtype">int</span>, <span class="comment">// port_left, port_right (port_left != port_right)</span></div><div class="line"><a name="l00224"></a><span class="lineno"> 224</span>&#160; <span class="keywordtype">int</span>, <span class="keywordtype">int</span> <span class="comment">// port_bottom, port_top (port_bottom != port_top)</span></div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span>&#160; );</div><div class="line"><a name="l00226"></a><span class="lineno"> 226</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00227"></a><span class="lineno"> 227</span>&#160;<span class="comment">////////////</span></div><div class="line"><a name="l00228"></a><span class="lineno"> 228</span>&#160;<span class="comment"></span><span class="comment">//</span></div><div class="line"><a name="l00229"></a><span class="lineno"> 229</span>&#160;<span class="comment">// Use ON_GL( ON_Viewport&amp; ) to load the GL model view matrix (world to </span></div><div class="line"><a name="l00230"></a><span class="lineno"> 230</span>&#160;<span class="comment">// camera transformation).</span></div><div class="line"><a name="l00231"></a><span class="lineno"> 231</span>&#160;<span class="keywordtype">void</span> ON_GL( <span class="keyword">const</span> <a class="code" href="../../d4/deb/class_o_n___viewport.html">ON_Viewport</a>&amp; );</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;<span class="comment">// Use ON_GL( order, cv_count, knot, bPermitScaling, glknot )</span></div><div class="line"><a name="l00234"></a><span class="lineno"> 234</span>&#160;<span class="comment">// to create knot vectors suitable for GL NURBS rendering.</span></div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span>&#160;<span class="keywordtype">void</span> ON_GL( </div><div class="line"><a name="l00236"></a><span class="lineno"> 236</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span>, <span class="comment">// order, ON_NurbsCurve... order</span></div><div class="line"><a name="l00237"></a><span class="lineno"> 237</span>&#160; <span class="keyword">const</span> <span class="keywordtype">int</span>, <span class="comment">// cv_count, ON_NurbsCurve... cv count</span></div><div class="line"><a name="l00238"></a><span class="lineno"> 238</span>&#160; <span class="keyword">const</span> <span class="keywordtype">double</span>*, <span class="comment">// knot, ON_NurbsCurve... knot vector</span></div><div class="line"><a name="l00239"></a><span class="lineno"> 239</span>&#160; GLfloat*, <span class="comment">// glknot[] - GL knot vector</span></div><div class="line"><a name="l00240"></a><span class="lineno"> 240</span>&#160; <span class="keywordtype">int</span> = 0, <span class="comment">// bPermitScaling - true if re-scaling is allowed</span></div><div class="line"><a name="l00241"></a><span class="lineno"> 241</span>&#160; <span class="keywordtype">double</span>* = <span class="keyword">nullptr</span> <span class="comment">// scale[2] - If not nullptr and bPermitScaling is true,</span></div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span>&#160; <span class="comment">// then the scaling parameters are returned here.</span></div><div class="line"><a name="l00243"></a><span class="lineno"> 243</span>&#160; <span class="comment">// ( glknot = (knot = scale[0])*scale[1] )</span></div><div class="line"><a name="l00244"></a><span class="lineno"> 244</span>&#160; );</div><div class="line"><a name="l00245"></a><span class="lineno"> 245</span>&#160;</div><div class="line"><a name="l00246"></a><span class="lineno"> 246</span>&#160;<span class="preprocessor">#endif</span></div><div class="ttc" id="class_o_n___material_html"><div class="ttname"><a href="../../d7/d53/class_o_n___material.html">ON_Material</a></div><div class="ttdef"><b>Definition:</b> opennurbs_material.h:25</div></div>
<div class="ttc" id="class_o_n___brep_face_html"><div class="ttname"><a href="../../d0/d4c/class_o_n___brep_face.html">ON_BrepFace</a></div><div class="ttdef"><b>Definition:</b> opennurbs_brep.h:917</div></div>
<div class="ttc" id="class_o_n___nurbs_surface_html"><div class="ttname"><a href="../../de/ddc/class_o_n___nurbs_surface.html">ON_NurbsSurface</a></div><div class="ttdef"><b>Definition:</b> opennurbs_nurbssurface.h:62</div></div>
<div class="ttc" id="class_o_n___curve_html"><div class="ttname"><a href="../../d4/d5a/class_o_n___curve.html">ON_Curve</a></div><div class="ttdoc">ON_Curve is a pure virtual class for curve objects </div><div class="ttdef"><b>Definition:</b> opennurbs_curve.h:93</div></div>
<div class="ttc" id="class_o_n___light_html"><div class="ttname"><a href="../../d0/df3/class_o_n___light.html">ON_Light</a></div><div class="ttdef"><b>Definition:</b> opennurbs_light.h:20</div></div>
<div class="ttc" id="class_o_n___color_html"><div class="ttname"><a href="../../d0/df9/class_o_n___color.html">ON_Color</a></div><div class="ttdef"><b>Definition:</b> opennurbs_color.h:24</div></div>
<div class="ttc" id="class_o_n___point_cloud_html"><div class="ttname"><a href="../../df/df2/class_o_n___point_cloud.html">ON_PointCloud</a></div><div class="ttdef"><b>Definition:</b> opennurbs_pointcloud.h:26</div></div>
<div class="ttc" id="class_o_n___mesh_html"><div class="ttname"><a href="../../df/d11/class_o_n___mesh.html">ON_Mesh</a></div><div class="ttdef"><b>Definition:</b> opennurbs_mesh.h:2188</div></div>
<div class="ttc" id="class_o_n___brep_html"><div class="ttname"><a href="../../d9/d96/class_o_n___brep.html">ON_Brep</a></div><div class="ttdef"><b>Definition:</b> opennurbs_brep.h:1472</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___viewport_html"><div class="ttname"><a href="../../d4/deb/class_o_n___viewport.html">ON_Viewport</a></div><div class="ttdef"><b>Definition:</b> opennurbs_viewport.h:31</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___point_html"><div class="ttname"><a href="../../d0/d8d/class_o_n___point.html">ON_Point</a></div><div class="ttdef"><b>Definition:</b> opennurbs_pointgeometry.h:24</div></div>
<div class="ttc" id="class_o_n___surface_html"><div class="ttname"><a href="../../da/da0/class_o_n___surface.html">ON_Surface</a></div><div class="ttdef"><b>Definition:</b> opennurbs_surface.h:57</div></div>
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