83 lines
1.7 KiB
C++
83 lines
1.7 KiB
C++
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef __FREESTYLE_SCENE_HASH_H__
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#define __FREESTYLE_SCENE_HASH_H__
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/** \file
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* \ingroup freestyle
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*/
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#include "IndexedFaceSet.h"
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#include "NodeViewLayer.h"
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#include "NodeCamera.h"
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#include "SceneVisitor.h"
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#include "BLI_sys_types.h"
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#ifdef WITH_CXX_GUARDEDALLOC
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# include "MEM_guardedalloc.h"
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#endif
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namespace Freestyle {
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class SceneHash : public SceneVisitor {
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public:
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inline SceneHash() : SceneVisitor()
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{
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_sum = 1;
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}
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virtual ~SceneHash()
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{
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}
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VISIT_DECL(NodeCamera);
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VISIT_DECL(NodeViewLayer);
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VISIT_DECL(IndexedFaceSet);
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string toString();
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inline bool match()
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{
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return _sum == _prevSum;
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}
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inline void store()
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{
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_prevSum = _sum;
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}
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inline void reset()
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{
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_sum = 1;
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}
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private:
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void adler32(unsigned char *data, int size);
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uint32_t _sum;
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uint32_t _prevSum;
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#ifdef WITH_CXX_GUARDEDALLOC
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MEM_CXX_CLASS_ALLOC_FUNCS("Freestyle:SceneHash")
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#endif
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};
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} /* namespace Freestyle */
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#endif // __FREESTYLE_SCENE_HASH_H__
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