SoIndexedNurbsCurve.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_SOINDEXEDNURBSCURVE_H
00021 #define COIN_SOINDEXEDNURBSCURVE_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 SoIndexedNurbsCurve : public SoShape {
00031   typedef SoShape inherited;
00032 
00033   SO_NODE_HEADER(SoIndexedNurbsCurve);
00034 
00035 public:
00036   static void initClass(void);
00037   SoIndexedNurbsCurve(void);
00038 
00039   SoSFInt32 numControlPoints;
00040   SoMFInt32 coordIndex;
00041   SoMFFloat knotVector;
00042 
00043   virtual void GLRender(SoGLRenderAction * action);
00044   virtual void rayPick(SoRayPickAction * action);
00045   virtual void getPrimitiveCount(SoGetPrimitiveCountAction * action);
00046   virtual void getBoundingBox(SoGetBoundingBoxAction * action);
00047   void sendPrimitive(SoAction *,  SoPrimitiveVertex *);
00048 
00049 protected:
00050   virtual ~SoIndexedNurbsCurve();
00051 
00052   virtual void generatePrimitives(SoAction * action);
00053   virtual void computeBBox(SoAction * action, SbBox3f & box, SbVec3f & center);
00054   virtual SoDetail * createLineSegmentDetail(SoRayPickAction * action,
00055                                              const SoPrimitiveVertex * v1,
00056                                              const SoPrimitiveVertex * v2,
00057                                              SoPickedPoint * pp);
00058 private:
00059   void * nurbsrenderer;
00060   void doNurbs(SoAction * action, const SbBool glrender, const SbBool drawaspoints);
00061 
00062   static void tessBegin(int type, void * data);
00063   static void tessTexCoord(float * texcoord, void * data);
00064   static void tessNormal(float * normal, void * data);
00065   static void tessVertex(float * vertex, void * data);
00066   static void tessEnd(void * data);
00067 };
00068 
00069 #endif // !COIN_SOINDEXEDNURBSCURVE_H