GLDepthBufferElement.h

#ifndef SMALLCHANGE_GLDEPTHBUFFERELEMENT_H
#define SMALLCHANGE_GLDEPTHBUFFERELEMENT_H
 
/**************************************************************************\
 * Copyright (c) Kongsberg Oil & Gas Technologies AS
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 * 
 * Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 * 
 * Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 * 
 * Neither the name of the copyright holder nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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\**************************************************************************/
 
#include <Inventor/elements/SoElement.h>
#include <Inventor/elements/SoSubElement.h>
 
#if defined(WIN32) || defined(_WIN32) || defined(__WIN32__) || defined(__NT__)
#include <SoWinLeaveScope.h>
#endif // win
 
#include <SmallChange/basic.h>
 
 
class SMALLCHANGE_DLL_API GLDepthBufferElement : public SoElement {
  typedef SoElement inherited;
 
  SO_ELEMENT_HEADER(GLDepthBufferElement);
public:
  static void initClass(void);
protected:
  virtual ~GLDepthBufferElement();
 
public:
  enum Func {
    NEVER,
    ALWAYS,
    LESS,
    LEQUAL,
    EQUAL,
    GEQUAL,
    GREATER,
    NOTEQUAL
  };
 
  static void set(SoState * state, const Func func, const SbBool enable);
  virtual void init(SoState * state);
  virtual void push(SoState * state);
  virtual void pop(SoState * state,
                   const SoElement * prevTopElement);
 
  virtual SbBool matches(const SoElement * element) const;
  virtual SoElement * copyMatchInfo(void) const;
 
private:
  void updategl(void) const;
  SbBool enable;
  Func func;
};
 
#if defined(WIN32) || defined(_WIN32) || defined(__WIN32__) || defined(__NT__)
#include <SoWinEnterScope.h>
#endif
 
#endif // !SMALLCHANGE_GLDEPTHBUFFERELEMENT_H