Open Inventor Reference
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00001 /* 00002 * 00003 * Copyright (C) 2003 MeVis gGmbH 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: MeVis, Center for Medical Diagnostic Systems and 00027 * Visualization GmbH, Universitätsallee 29, D-28359 Bremen, GERMANY, or: 00028 * 00029 * http://www.mevis.de 00030 * 00031 */ 00032 00033 /* 00034 * Copyright (C) 2003 MeVis Research GmbH 00035 * 00036 _______________________________________________________________________ 00037 _______________ M E V I S R E S E A R C H G M B H _______________ 00038 | 00039 | Description: 00040 | Manages stencil bits of the OpenGL stencil buffer 00041 | 00042 | Author(s) : Felix Ritter 00043 | 00044 _______________ M E V I S R E S E A R C H G M B H _______________ 00045 _______________________________________________________________________ 00046 */ 00047 00048 #ifndef _SO_STENCIL_BITS_ELEMENT_ 00049 #define _SO_STENCIL_BITS_ELEMENT_ 00050 00051 #include <Inventor/system/SbSystem.h> 00052 #include <Inventor/elements/SoInt32Element.h> 00053 00054 SoEXTENDER class INVENTOR_API SoStencilBitsElement : public SoInt32Element 00055 { 00056 typedef SoInt32Element inherited; 00057 00058 SO_ELEMENT_HEADER(SoStencilBitsElement); 00059 00060 public: 00061 00063 virtual void init(SoState *state); 00064 00068 static uint32_t acquireBits(SoState *state, SoNode *node, int num); 00069 00071 static void releaseBits(SoState *state, uint32_t mask); 00072 00077 static void clearBitsInUse(SoState *state); 00078 00080 static uint32_t get(SoState *state) { 00081 return (uint32_t)SoInt32Element::get(classStackIndex, state); 00082 } 00083 00085 static uint32_t getDefault() { 00086 return 0x0; 00087 } 00088 00090 static int getNumRemainingBits(SoState *state); 00091 00093 virtual void push(SoState *state); 00094 00095 protected: 00096 00098 static int getNumBitPositionsToShift(uint32_t mask, SoState *state); 00099 00101 virtual ~SoStencilBitsElement(); 00102 00104 int getNumGLBits() const; 00105 00106 SoINTERNAL public: 00107 00109 static void initClass(); 00110 00111 private: 00112 00114 mutable int numGLBits; 00115 }; 00116 00117 #endif // _SO_STENCIL_BITS_ELEMENT_