Open Inventor Reference
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00001 /* 00002 * 00003 * Copyright (C) 2000 Silicon Graphics, Inc. All Rights Reserved. 00004 * 00005 * This library is free software; you can redistribute it and/or 00006 * modify it under the terms of the GNU Lesser General Public 00007 * License as published by the Free Software Foundation; either 00008 * version 2.1 of the License, or (at your option) any later version. 00009 * 00010 * This library is distributed in the hope that it will be useful, 00011 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00013 * Lesser General Public License for more details. 00014 * 00015 * Further, this software is distributed without any warranty that it is 00016 * free of the rightful claim of any third person regarding infringement 00017 * or the like. Any license provided herein, whether implied or 00018 * otherwise, applies only to this software file. Patent licenses, if 00019 * any, provided herein do not apply to combinations of this program with 00020 * other software, or any other product whatsoever. 00021 * 00022 * You should have received a copy of the GNU Lesser General Public 00023 * License along with this library; if not, write to the Free Software 00024 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 00025 * 00026 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, 00027 * Mountain View, CA 94043, or: 00028 * 00029 * http://www.sgi.com 00030 * 00031 * For further information regarding this notice, see: 00032 * 00033 * http://oss.sgi.com/projects/GenInfo/NoticeExplan/ 00034 * 00035 */ 00036 00037 00038 /* 00039 * Copyright (C) 1990,91,92,93 Silicon Graphics, Inc. 00040 * 00041 _______________________________________________________________________ 00042 ______________ S I L I C O N G R A P H I C S I N C . ____________ 00043 | 00044 | $Revision: 1.1.1.1 $ 00045 | 00046 | Description: 00047 | This file defines the SoNurbsCurve node class. 00048 | 00049 | Author(s) : Dave Immel 00050 | 00051 ______________ S I L I C O N G R A P H I C S I N C . ____________ 00052 _______________________________________________________________________ 00053 */ 00054 00055 #ifndef _SO_NURBS_CURVE_ 00056 #define _SO_NURBS_CURVE_ 00057 00058 #include <Inventor/SbLinear.h> 00059 #include <Inventor/fields/SoMFFloat.h> 00060 #include <Inventor/fields/SoSFFloat.h> 00061 #include <Inventor/fields/SoSFInt32.h> 00062 #include <Inventor/nodes/SoShape.h> 00063 00064 00065 class SoState; 00066 class SoPrimitiveVertex; 00067 class _SoNurbsNurbsTessellator; 00068 00071 00126 00127 00128 class INVENTOR_API SoNurbsCurve : public SoShape { 00129 00130 SO_NODE_HEADER(SoNurbsCurve); 00131 00132 public: 00134 00135 00137 SoSFInt32 numControlPoints; 00138 00140 SoMFFloat knotVector; 00141 00143 00145 SoNurbsCurve(); 00146 00147 SoEXTENDER public: 00148 virtual void GLRender(SoGLRenderAction *action); 00149 virtual void rayPick(SoRayPickAction *action); 00150 00152 virtual void getBoundingBox(SoGetBoundingBoxAction *action); 00153 00154 SoINTERNAL public: 00155 static void initClass(); 00156 00157 void sendPrimitive(SoAction *, SoPrimitiveVertex *); 00158 00159 protected: 00161 virtual void generatePrimitives(SoAction *action); 00162 00164 virtual void computeBBox(SoAction *action, SbBox3f &box, 00165 SbVec3f ¢er); 00166 00167 ~SoNurbsCurve(); 00168 00169 private: 00170 00171 void drawNURBS(_SoNurbsNurbsTessellator *render, SoState *state); 00172 00173 void calcTotalMatrix( SoState *state, SbMatrix &totalMat ); 00174 00175 void multMatrix4d ( SbMatrix &n, SbMatrix left, 00176 SbMatrix right ); 00177 00179 static void primCB(SoAction *, SoPrimitiveVertex *, void *); 00180 }; 00181 00182 #endif /* _SO_NURBS_CURVE_ */