#pragma region License
/******************************************************************************
This file is part of the PolyVox library
Copyright (C) 2006  David Williams

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.
******************************************************************************/
#pragma endregion

#ifndef __PolyVoxImpl_DecimatedSurfaceExtractor_H__
#define __PolyVoxImpl_DecimatedSurfaceExtractor_H__

#pragma region Headers
#include "../PolyVoxForwardDeclarations.h"
#include "TypeDef.h"

#include "CPlusPlusZeroXSupport.h"
#pragma endregion

namespace PolyVox
{
	uint32_t getDecimatedIndex(uint32_t x, uint32_t y, uint32_t regionWidth);

	void extractDecimatedSurfaceImpl(Volume<uint8_t>* volumeData, uint8_t uLevel, Region region, IndexedSurfacePatch* singleMaterialPatch);
	uint32_t computeInitialDecimatedBitmaskForSlice(VolumeIterator<uint8_t>& volIter, uint8_t uLevel, const Region& regSlice, const Vector3DFloat& offset, uint8_t *bitmask);
	uint32_t computeDecimatedBitmaskForSliceFromPrevious(VolumeIterator<uint8_t>& volIter, uint8_t uLevel, const Region& regSlice, const Vector3DFloat& offset, uint8_t *bitmask, uint8_t *previousBitmask);
	void generateDecimatedIndicesForSlice(VolumeIterator<uint8_t>& volIter, uint8_t uLevel, const Region& regSlice, IndexedSurfacePatch* singleMaterialPatch, const Vector3DFloat& offset, uint8_t* bitmask0, uint8_t* bitmask1, int32_t vertexIndicesX0[],int32_t vertexIndicesY0[],int32_t vertexIndicesZ0[], int32_t vertexIndicesX1[],int32_t vertexIndicesY1[],int32_t vertexIndicesZ1[]);
	void generateDecimatedVerticesForSlice(VolumeIterator<uint8_t>& volIter, uint8_t uLevel, Region& regSlice, const Vector3DFloat& offset, uint8_t* bitmask, IndexedSurfacePatch* singleMaterialPatch,int32_t vertexIndicesX[],int32_t vertexIndicesY[],int32_t vertexIndicesZ[]);
}

#endif