SoNormalElement.h

#ifndef COIN_SONORMALELEMENT_H
#define COIN_SONORMALELEMENT_H

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#include <Inventor/elements/SoReplacedElement.h>
#include <Inventor/SbVec3f.h>
#include <cassert>

class COIN_DLL_API SoNormalElement : public SoReplacedElement {
  typedef SoReplacedElement inherited;

  SO_ELEMENT_HEADER(SoNormalElement);
public:
  static void initClass(void);
protected:
  virtual ~SoNormalElement();

public:
  virtual void init(SoState * state);

  static void set(SoState * const state, SoNode * const node,
                  const int32_t numNormals, const SbVec3f * const normals,
                  const SbBool normalsAreUnitLength = FALSE);

  static const SoNormalElement * getInstance(SoState * const state);
  int32_t getNum(void) const;
  const SbVec3f & get(const int index) const;
  const SbVec3f *getArrayPtr(void) const;

  SbBool areNormalsUnitLength(void) const;

protected:
  int32_t numNormals;
  const SbVec3f * normals;
  SbBool unitLength;
};

#endif // !COIN_SONORMALELEMENT_H