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