Open Inventor Reference
|
00001 /* 00002 * 00003 * Copyright (C) 2000 Silicon Graphics, Inc. All Rights Reserved. 00004 * 00005 * This library is free software; you can redistribute it and/or 00006 * modify it under the terms of the GNU Lesser General Public 00007 * License as published by the Free Software Foundation; either 00008 * version 2.1 of the License, or (at your option) any later version. 00009 * 00010 * This library is distributed in the hope that it will be useful, 00011 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00013 * Lesser General Public License for more details. 00014 * 00015 * Further, this software is distributed without any warranty that it is 00016 * free of the rightful claim of any third person regarding infringement 00017 * or the like. Any license provided herein, whether implied or 00018 * otherwise, applies only to this software file. Patent licenses, if 00019 * any, provided herein do not apply to combinations of this program with 00020 * other software, or any other product whatsoever. 00021 * 00022 * You should have received a copy of the GNU Lesser General Public 00023 * License along with this library; if not, write to the Free Software 00024 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 00025 * 00026 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, 00027 * Mountain View, CA 94043, or: 00028 * 00029 * http://www.sgi.com 00030 * 00031 * For further information regarding this notice, see: 00032 * 00033 * http://oss.sgi.com/projects/GenInfo/NoticeExplan/ 00034 * 00035 */ 00036 00037 00038 /* 00039 * Copyright (C) 1990,91 Silicon Graphics, Inc. 00040 * 00041 _______________________________________________________________________ 00042 ______________ S I L I C O N G R A P H I C S I N C . ____________ 00043 | 00044 | $Revision: 1.1.1.1 $ 00045 | 00046 | Classes: 00047 | SoCacheElement 00048 | 00049 | Author(s) : Paul S. Strauss, Gavin Bell 00050 | 00051 ______________ S I L I C O N G R A P H I C S I N C . ____________ 00052 _______________________________________________________________________ 00053 */ 00054 00055 #ifndef _SO_CACHE_ELEMENT_ 00056 #define _SO_CACHE_ELEMENT_ 00057 00058 #include <Inventor/elements/SoSubElement.h> 00059 00060 class SoCache; 00061 00070 00071 SoEXTENDER class INVENTOR_API SoCacheElement : public SoElement { 00072 00073 SO_ELEMENT_HEADER(SoCacheElement); 00074 00075 public: 00077 virtual void init(SoState *state); 00078 00080 static void set(SoState *state, SoCache *cache); 00081 00083 SoCache * getCache() const { return cache; } 00084 00086 static SbBool anyOpen(SoState *state); 00087 00090 static void invalidate(SoState *state); 00091 00093 virtual void pop(SoState *state, const SoElement *prevTopElement); 00094 00098 virtual SbBool matches(const SoElement *elt) const; 00099 00101 virtual SoElement *copyMatchInfo() const; 00102 00104 SoCacheElement * getNextCacheElement() const 00105 { return (SoCacheElement *) getNextInStack(); } 00106 00107 SoINTERNAL public: 00109 static void initClass(); 00110 00113 static void addElement(SoState *state, const SoElement *elt); 00114 00117 static void addCacheDependency(SoState *state, SoCache *cache); 00118 00121 static SbBool setInvalid(SbBool newValue); 00122 00125 static SoCache * getCurrentCache(SoState *state) 00126 {return ((SoCacheElement*)(state->getElementNoPush(classStackIndex)))->cache;} 00127 00128 virtual ~SoCacheElement(); 00129 00130 private: 00131 SoCache *cache; 00132 00133 static SbBool invalidated; 00134 00135 friend class SoElement; 00136 }; 00137 00138 #endif /* _SO_CACHE_ELEMENT_ */