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SoDepthBufferElement.h
00001 #ifndef COIN_SODEPTHBUFFERELEMENT_H
00002 #define COIN_SODEPTHBUFFERELEMENT_H
00003 
00004 /**************************************************************************\
00005  *
00006  *  This file is part of the Coin 3D visualization library.
00007  *  Copyright (C) by Kongsberg Oil & Gas Technologies.
00008  *
00009  *  This library is free software; you can redistribute it and/or
00010  *  modify it under the terms of the GNU General Public License
00011  *  ("GPL") version 2 as published by the Free Software Foundation.
00012  *  See the file LICENSE.GPL at the root directory of this source
00013  *  distribution for additional information about the GNU GPL.
00014  *
00015  *  For using Coin with software that can not be combined with the GNU
00016  *  GPL, and for taking advantage of the additional benefits of our
00017  *  support services, please contact Kongsberg Oil & Gas Technologies
00018  *  about acquiring a Coin Professional Edition License.
00019  *
00020  *  See http://www.coin3d.org/ for more information.
00021  *
00022  *  Kongsberg Oil & Gas Technologies, Bygdoy Alle 5, 0257 Oslo, NORWAY.
00023  *  http://www.sim.no/  sales@sim.no  coin-support@coin3d.org
00024  *
00025 \**************************************************************************/
00026 
00027 #include <Inventor/elements/SoElement.h>
00028 #include <Inventor/elements/SoSubElement.h>
00029 #include <Inventor/SbVec2f.h>
00030 
00031 class COIN_DLL_API SoDepthBufferElement : public SoElement {
00032   typedef SoElement inherited;
00033   SO_ELEMENT_HEADER(SoDepthBufferElement);
00034 
00035 public:
00036   static void initClass(void);
00037 
00038   enum DepthWriteFunction {
00039     NEVER,
00040     ALWAYS,
00041     LESS,
00042     LEQUAL,
00043     EQUAL,
00044     GEQUAL,
00045     GREATER,
00046     NOTEQUAL
00047   };
00048 
00049   static void set(SoState * state, SbBool test, SbBool write,
00050                   DepthWriteFunction function, SbVec2f range);
00051 
00052   static void get(SoState * state, SbBool & test_out, SbBool & write_out,
00053                   DepthWriteFunction & function_out, SbVec2f & range_out);
00054 
00055   static SbBool getTestEnable(SoState * state);
00056   static SbBool getWriteEnable(SoState * state);
00057   static DepthWriteFunction getFunction(SoState * state);
00058   static SbVec2f getRange(SoState * state);
00059 
00060   virtual void init(SoState * state);
00061   virtual void push(SoState * state);
00062   virtual void pop(SoState * state,
00063                    const SoElement * prevTopElement);
00064 
00065   virtual SbBool matches(const SoElement * element) const;
00066   virtual SoElement * copyMatchInfo(void) const;
00067 
00068 protected:
00069   virtual ~SoDepthBufferElement();
00070 
00071   virtual void setElt(SbBool test, SbBool write,
00072                       DepthWriteFunction function, SbVec2f range);
00073 
00074   SbBool test;
00075   SbBool write;
00076   DepthWriteFunction function;
00077   SbVec2f range;
00078 
00079 }; // SoDepthBufferElement
00080 
00081 #endif // !COIN_SODEPTHBUFFERELEMENT_H

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