Inventor/elements/SoDepthBufferElement.h

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**=======================================================================*/
/*=======================================================================
** Author      : VSG (Apr 2009)
**=======================================================================*/

#ifndef _SO_DEPTH_BUFFER_ELEMENT_
#define _SO_DEPTH_BUFFER_ELEMENT_

#include <Inventor/SbBasic.h>
#include <Inventor/SbVec.h>
#include <Inventor/elements/SoSubElement.h>

class SoDepthBuffer;

class  SoDepthBufferElement : public SoElement
{
  SO_ELEMENT_HEADER(SoDepthBufferElement);

public:
  enum DepthWriteFunction {
    NEVER,
    LESS,
    EQUAL,
    LEQUAL,
    GREATER,
    NOTEQUAL,
    GEQUAL,
    ALWAYS
  };

  static void set(SoState* state, const SbBool test, const SbBool write, const DepthWriteFunction function, const SbVec2f range);

  static void set(SoState* state, SoDepthBuffer* depthBuffer,  const SbBool test, const SbBool write, const DepthWriteFunction function, const SbVec2f range);

  static void get(SoState* state, SbBool& test, SbBool& write, DepthWriteFunction& function, SbVec2f& range);

  virtual void print(FILE *fp) const;

  virtual void push(SoState *state);

  virtual void pop(SoState *state, const SoElement *prevTopElement);

private:

  virtual void init(SoState *state);

  virtual SbBool matches(const SoElement* elt) const;

  virtual SoElement* copyMatchInfo() const;


private:

  static void initClass();

  static void exitClass();

  static SbBool getTestEnable(SoState * state);

  static SbBool getWriteEnable(SoState * state);

  static DepthWriteFunction getFunction(SoState * state);

  static SbVec2f getRange(SoState * state);

  static SoDepthBuffer* getDepthBuffer(SoState * state);

private:

  virtual ~SoDepthBufferElement();

  virtual void setElt(SoDepthBuffer* depthBuffer, const SbBool enable, const SbBool write, const DepthWriteFunction function, const SbVec2f range);

private:
  SbBool test;
  SbBool write;
  DepthWriteFunction function;
  SbVec2f range;

  SoDepthBuffer* m_depthBuffer;
};

#endif /* _SO_DEPTH_BUFFER_ELEMENT_ */

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Open Inventor Toolkit reference manual, generated on 12 Feb 2024
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