SoCache.h

#ifndef COIN_SOCACHE_H
#define COIN_SOCACHE_H

/**************************************************************************\
 * Copyright (c) Kongsberg Oil & Gas Technologies AS
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 * this software without specific prior written permission.
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class SoState;
class SoElement;
class SoCacheP;

#include <Inventor/SbBasic.h>
#include <cstddef> // for NULL

class COIN_DLL_API SoCache {
public:
  SoCache(SoState * const state);

  void ref(void);
  void unref(SoState * state = NULL);

  void addElement(const SoElement * const elem);

  virtual void addCacheDependency(const SoState * state,
                                  SoCache * cache);
  virtual SbBool isValid(const SoState * state) const;
  const SoElement * getInvalidElement(const SoState * const state) const;
  void invalidate(void);

protected:
  virtual void destroy(SoState * state);
  virtual ~SoCache();

private:
  SoCacheP * pimpl;
};

#endif // !COIN_SOCACHE_H