SoIndexedTriangleFanSet.h

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#pragma once
 
#include <Inventor/nodes/SoNode.h>
#include <Inventor/nodes/SoIndexedShape.h>
 
//
//  Class: SoIndexedTriangleFanSet
//
//  Indexed set of triangles fans. Fans are separated by the
//  special index SO_END_FAN_INDEX (-1). The N indices in the fan
//  define N-2 triangles, which are formed by indexing into the
//  current coordinates. Depending on the current material and normal
//  binding values, the materials and normals for the triangles or
//  vertices may be accessed in order or indexed. If they are indexed,
//  the materialIndex and normalIndex fields are used.
//
 
#define SO_END_FAN_INDEX (-1)
 
SO_PIMPL_BASE_PUBLIC_DECLARATION(SoIndexedTriangleFanSet);
 
class  SoIndexedTriangleFanSet : public SoIndexedShape
{
  SO_NODE_HEADER(SoIndexedTriangleFanSet);
  SO_PIMPL_BASE_PUBLIC_HEADER(SoIndexedTriangleFanSet);
 
public:
  SoIndexedTriangleFanSet();
  
  int getNumTriangles();
 
  int getNumFans();
 
private:
  virtual void GLRender(SoGLRenderAction* action);
  virtual void getPrimitiveCount(SoGetPrimitiveCountAction* action);
  virtual int getNumNeededNormals(SoState* state);
  virtual void generateDefaultNormals(SoState* state,
    const SbVec3f* coords,
    int numCoords,
    SoNormalBundle* nb,
    SbBool storeRef = FALSE);
 
  virtual void shouldGenerateTangents( SoGLRenderAction* /*action*/, const SoShapeStyleElement* /*shapeStyle*/ ) {}
 
private:
  static void initClass();
  static void exitClass();
  virtual void notify(SoNotList* list);
 
private:
  virtual ~SoIndexedTriangleFanSet();
  virtual void generatePrimitives(SoAction *action);  
};