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00020 #ifndef COIN_SONURBSCURVE_H
00021 #define COIN_SONURBSCURVE_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 SoNurbsCurve : public SoShape {
00029 typedef SoShape inherited;
00030
00031 SO_NODE_HEADER(SoNurbsCurve);
00032
00033 public:
00034 static void initClass(void);
00035 SoNurbsCurve(void);
00036
00037 SoSFInt32 numControlPoints;
00038 SoMFFloat knotVector;
00039
00040 virtual void GLRender(SoGLRenderAction * action);
00041 virtual void rayPick(SoRayPickAction * action);
00042 virtual void getPrimitiveCount(SoGetPrimitiveCountAction * action);
00043 virtual void getBoundingBox(SoGetBoundingBoxAction * action);
00044 void sendPrimitive(SoAction *, SoPrimitiveVertex *);
00045
00046 protected:
00047 virtual ~SoNurbsCurve();
00048
00049 virtual void generatePrimitives(SoAction * action);
00050 virtual void computeBBox(SoAction * action, SbBox3f & box, SbVec3f & center);
00051 virtual SoDetail * createLineSegmentDetail(SoRayPickAction * action,
00052 const SoPrimitiveVertex * v1,
00053 const SoPrimitiveVertex * v2,
00054 SoPickedPoint * pp);
00055 private:
00056 void * nurbsrenderer;
00057 void doNurbs(SoAction * action, const SbBool glrender, const SbBool drawaspoints);
00058
00059 static void tessBegin(int type, void * data);
00060 static void tessTexCoord(float * texcoord, void * data);
00061 static void tessNormal(float * normal, void * data);
00062 static void tessVertex(float * vertex, void * data);
00063 static void tessEnd(void * data);
00064 };
00065
00066 #endif // !COIN_SONURBSCURVE_H