SoNurbsSurface.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_SONURBSSURFACE_H
00021 #define COIN_SONURBSSURFACE_H
00022 
00023 #include <Inventor/nodes/SoSubNode.h>
00024 #include <Inventor/nodes/SoShape.h>
00025 #include <Inventor/fields/SoSFInt32.h>
00026 #include <Inventor/fields/SoMFFloat.h>
00027 
00028 class COIN_DLL_API SoNurbsSurface : public SoShape {
00029   typedef SoShape inherited;
00030 
00031   SO_NODE_HEADER(SoNurbsSurface);
00032 
00033 public:
00034   static void initClass(void);
00035   SoNurbsSurface(void);
00036 
00037   SoSFInt32 numUControlPoints;
00038   SoSFInt32 numVControlPoints;
00039   SoSFInt32 numSControlPoints;
00040   SoSFInt32 numTControlPoints;
00041   SoMFFloat uKnotVector;
00042   SoMFFloat vKnotVector;
00043   SoMFFloat sKnotVector;
00044   SoMFFloat tKnotVector;
00045 
00046   virtual void GLRender(SoGLRenderAction * action);
00047   virtual void rayPick(SoRayPickAction * action);
00048   virtual void getPrimitiveCount(SoGetPrimitiveCountAction * action);
00049   void sendPrimitive(SoAction *,  SoPrimitiveVertex *);
00050 
00051 protected:
00052   virtual ~SoNurbsSurface();
00053 
00054   virtual void generatePrimitives(SoAction * action);
00055   virtual void computeBBox(SoAction * action, SbBox3f & box, SbVec3f & center);
00056   SoDetail * createTriangleDetail(SoRayPickAction * action,
00057                                   const SoPrimitiveVertex * v1,
00058                                   const SoPrimitiveVertex * v2,
00059                                   const SoPrimitiveVertex * v3,
00060                                   SoPickedPoint * pp);
00061 private:
00062   void * nurbsrenderer;
00063   void doNurbs(SoAction * action, const SbBool glrender);
00064 
00065   static void tessBegin(int type, void * data);
00066   static void tessTexCoord(float * texcoord, void * data);
00067   static void tessNormal(float * normal, void * data);
00068   static void tessVertex(float * vertex, void * data);
00069   static void tessEnd(void * data);
00070 };
00071 
00072 #endif // !COIN_SONURBSSURFACE_H