SoNurbsCurve.h

/*=======================================================================
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**=======================================================================*/
/*=======================================================================
** Author      : Dave Immel (MMM yyyy)
**=======================================================================*/
/*=======================================================================
 *** THE CONTENT OF THIS WORK IS PROPRIETARY TO FEI S.A.S, (FEI S.A.S.),            ***
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 ***  CLAUSE  AT FAR 52.227-19  OR SUBPARAGRAPH  (C)(1)(II)  OF  THE RIGHTS IN      ***
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 ***                        BORDEAUX, FRANCE                                        ***
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**=======================================================================*/
/*=======================================================================
** Modified by : VSG (MMM YYYY)
**=======================================================================*/
 
 
#ifndef  _SO_NURBS_CURVE_
#define  _SO_NURBS_CURVE_
 
#include <Inventor/fields/SoMFFloat.h>
#include <Inventor/fields/SoSFInt32.h>
#include <Inventor/nodes/SoShape.h>
 
SO_PIMPL_PUBLIC_DECLARATION(SoNurbsCurve)
 
 
//
//  Class: SoNurbsCurve
//
//  NURBS curve. The curve consists of a knot vector and order for
//  the U parametric directions.  The control points for the curve
//  are obtained from the current coordinates.
//
 
class  SoNurbsCurve : public SoShape {
  
  SO_NODE_HEADER(SoNurbsCurve);
  SO_PIMPL_PUBLIC_HEADER(SoNurbsCurve)
  
 public:
  SoSFInt32 numControlPoints;
 
  SoMFFloat knotVector;
 
  SoNurbsCurve();
 
 private:
  virtual void GLRender(SoGLRenderAction *action);
  virtual void rayPick(SoRayPickAction *action);
  virtual void getPrimitiveCount(SoGetPrimitiveCountAction *action);
  
  // Redefine this to tell open caches that they contain lines
  virtual void getBoundingBox(SoGetBoundingBoxAction *action);
 
  // Computes bounding box of curve
  virtual void computeBBox(SoAction *action, SbBox3f &box,
                           SbVec3f &center);
  
 private:
  static void initClass();
  static void exitClass();
  
 private:
  // Generates triangles representing a sphere
  virtual void generatePrimitives(SoAction *action);
  
  ~SoNurbsCurve();
 
};
 
#endif /* _SO_NURBS_CURVE_ */