Inventor/nodes/SoIndexedPointSet.h

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**=======================================================================*/
/*=======================================================================
** Author      : F. DELLA MAESTRA (Sep 2005)
**=======================================================================*/

#ifndef  _SO_INDEXED_POINT_SET_
#define  _SO_INDEXED_POINT_SET_

#include <Inventor/nodes/SoIndexedShape.h>

//
//  Class: SoIndexedPointSet
//
//  Indexed set of points. Each point consists of one
//  vertex, which is denoted by an integer index (from the
//  coordIndex field) into the current coordinate. Depending on the
//  current material and normal binding values, the materials and
//  normals for the vertices may be accessed in order or
//  indexed. If they are indexed, the materialIndex and normalIndex
//  fields are used. /*Texture coordinates may also be indexed, using
//  the textureCoordIndex field.*/
//
//#define SO_END_POINT_INDEX (-1)

class  SoIndexedPointSet : public SoIndexedShape {

  SO_NODE_HEADER(SoIndexedPointSet);

public:
  // Inherits all fields

  SoIndexedPointSet();

  private:
  virtual void   GLRender(SoGLRenderAction *action);

  virtual void getBoundingBox(SoGetBoundingBoxAction *action);

  virtual void getPrimitiveCount(SoGetPrimitiveCountAction *action);

  // Computes bounding box
  virtual void computeBBox( SoAction *action, SbBox3f &box, SbVec3f &center );

  private:

  static void initClass();
  static void exitClass();

private:
  // Generates points representing point set
  virtual void generatePrimitives(SoAction *action);
  virtual void invokePointCallbacks_(SoAction *action, const SoPrimitiveVertex *v, const uint32_t index);

  // really do the rendering part
  virtual void doRendering(SoGLRenderAction *action, const SoShapeStyleElement* shapeStyle);

  virtual void callSetupIndices(const SoShapeStyleElement* shapeStyle,uint32_t useTexCoordsAnyway);

  // return num points for test  
  virtual int getNumPrim();

  // No normal generation
  virtual void shouldGenerateNormals(SoGLRenderAction *action,const SoShapeStyleElement *shapeStyle);

  // check if glrender should be called
  virtual SbBool shouldGLRender(SoGLRenderAction *action, SbBool isPointsOrLines = FALSE);

  // says that rendering is PointOrLine
  virtual SbBool isRenderingPointsOrLines(SoGLRenderAction *action);

  // Overrides standard method to create an SoPointDetail instance
  virtual SoDetail* createPointDetail(SoRayPickAction *action,
    const SoPrimitiveVertex *v,
    SoPickedPoint *pp);

  virtual ~SoIndexedPointSet();

SoINTERNAL private:

#ifndef HIDDEN_FROM_DOC

  void generatePrimitives_( SoAction *action );
#endif // HIDDEN_FROM_DOC

private:
  // This enum is used to indicate the current material or normal binding
  enum Binding {
    OVERALL,
    PER_VERTEX,
    PER_VERTEX_INDEXED
  };

  // Returns current material or normal binding from action's state
  static Binding getMaterialBinding(SoAction* action);
  static Binding getNormalBinding(SoAction* action);
  SbBool              areMaterialsPerPoint(SoAction *action) const;
  SbBool              areNormalsPerPoint(SoAction *action) const;



  // Number of points to draw
  int   numPoints;

};

inline SbBool 
SoIndexedPointSet::isRenderingPointsOrLines(SoGLRenderAction *)
{
  return TRUE;
}

#endif /* _SO_INDEXED_POINT_SET_ */

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Open Inventor Toolkit reference manual, generated on 12 Feb 2024
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