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SoState.h

00001 /**************************************************************************\
00002  *
00003  *  This file is part of the Coin 3D visualization library.
00004  *  Copyright (C) 1998-2002 by Systems in Motion. All rights reserved.
00005  *
00006  *  This library is free software; you can redistribute it and/or
00007  *  modify it under the terms of the GNU Lesser General Public License
00008  *  version 2.1 as published by the Free Software Foundation. See the
00009  *  file LICENSE.LGPL at the root directory of the distribution for
00010  *  more details.
00011  *
00012  *  If you want to use Coin for applications not compatible with the
00013  *  LGPL, please contact SIM to acquire a Professional Edition license.
00014  *
00015  *  Systems in Motion, Prof Brochs gate 6, 7030 Trondheim, NORWAY
00016  *  http://www.sim.no support@sim.no Voice: +47 22114160 Fax: +47 22207097
00017  *
00018 \**************************************************************************/
00019 
00020 #ifndef COIN_SOSTATE_H
00021 #define COIN_SOSTATE_H
00022 
00023 #include <Inventor/SbBasic.h>
00024 #include <stdio.h>
00025 
00026 class SoAction;
00027 class SoTypeList;
00028 class SoElement;
00029 
00030 class COIN_DLL_API SoState {
00031 public:
00032   SoState(SoAction * action,
00033           const SoTypeList & enabledelements);
00034   ~SoState(void);
00035 
00036   SoAction * getAction(void) const;
00037 
00038   SoElement * getElement(const int stackindex);
00039   const SoElement * getConstElement(const int stackindex) const;
00040 
00041   void push(void);
00042   void pop(void);
00043 
00044   void print(FILE * const file = stdout) const;
00045 
00046   SbBool isElementEnabled(const int stackindex) const;
00047 
00048   int getDepth(void) const;
00049 
00050   void setCacheOpen(const SbBool flag);
00051   SbBool isCacheOpen(void) const;
00052 
00053   void lazyEvaluate(void) const;
00054 
00055   SoElement * getElementNoPush(const int stackindex) const;
00056 
00057 private:
00058   SoElement ** stack;
00059   class SoStateP * pimpl;  
00060 };
00061 
00062 // used very often, and is therefore inlined
00063 inline const SoElement *
00064 SoState::getConstElement(const int stackindex) const
00065 {
00066   return this->stack[stackindex];
00067 }
00068 
00069 #endif // !COIN_SOSTATE_H

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