SoIndexedNurbsSurface.h Source File

00001 /**************************************************************************\
00002  *
00003  *  This file is part of the Coin 3D visualization library.
00004  *  Copyright (C) 1998-2002 by Systems in Motion. All rights reserved.
00005  *
00006  *  This library is free software; you can redistribute it and/or
00007  *  modify it under the terms of the GNU Lesser General Public License
00008  *  version 2.1 as published by the Free Software Foundation. See the
00009  *  file LICENSE.LGPL at the root directory of the distribution for
00010  *  more details.
00011  *
00012  *  If you want to use Coin for applications not compatible with the
00013  *  LGPL, please contact SIM to acquire a Professional Edition license.
00014  *
00015  *  Systems in Motion, Prof Brochs gate 6, 7030 Trondheim, NORWAY
00016  *  http://www.sim.no support@sim.no Voice: +47 22114160 Fax: +47 22207097
00017  *
00018 \**************************************************************************/
00019 
00020 #ifndef COIN_SOINDEXEDNURBSSURFACE_H
00021 #define COIN_SOINDEXEDNURBSSURFACE_H
00022 
00023 #include <Inventor/nodes/SoSubNode.h>
00024 #include <Inventor/nodes/SoShape.h>
00025 #include <Inventor/fields/SoSFInt32.h>
00026 #include <Inventor/fields/SoMFInt32.h>
00027 #include <Inventor/fields/SoMFFloat.h>
00028 
00029 
00030 class COIN_DLL_API SoIndexedNurbsSurface : public SoShape {
00031     typedef SoShape inherited;
00032 
00033   SO_NODE_HEADER(SoIndexedNurbsSurface);
00034 
00035 public:
00036   static void initClass(void);
00037   SoIndexedNurbsSurface(void);
00038 
00039   SoSFInt32 numUControlPoints;
00040   SoSFInt32 numVControlPoints;
00041   SoMFInt32 coordIndex;
00042   SoMFFloat uKnotVector;
00043   SoMFFloat vKnotVector;
00044   SoSFInt32 numSControlPoints;
00045   SoSFInt32 numTControlPoints;
00046   SoMFInt32 textureCoordIndex;
00047   SoMFFloat sKnotVector;
00048   SoMFFloat tKnotVector;
00049 
00050   virtual void GLRender(SoGLRenderAction * action);
00051   virtual void rayPick(SoRayPickAction * action);
00052   virtual void getPrimitiveCount(SoGetPrimitiveCountAction * action);
00053   void sendPrimitive(SoAction *,  SoPrimitiveVertex *);
00054 
00055 protected:
00056   virtual ~SoIndexedNurbsSurface();
00057 
00058   virtual void generatePrimitives(SoAction * action);
00059   virtual void computeBBox(SoAction * action, SbBox3f & box, SbVec3f & center);
00060   SoDetail * createTriangleDetail(SoRayPickAction * action,
00061                                   const SoPrimitiveVertex * v1,
00062                                   const SoPrimitiveVertex * v2,
00063                                   const SoPrimitiveVertex * v3,
00064                                   SoPickedPoint * pp);
00065 private:
00066   void * nurbsrenderer;
00067   void doNurbs(SoAction * action, const SbBool glrender);
00068 
00069   static void tessBegin(int , void * data);
00070   static void tessTexCoord(float * texcoord, void * data);
00071   static void tessNormal(float * normal, void * data);
00072   static void tessVertex(float * vertex, void * data);
00073   static void tessEnd(void * data);
00074 
00075 };
00076 
00077 #endif // !COIN_SOINDEXEDNURBSSURFACE_H