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0ad/source/renderer/AlphaMapCalculator.h

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/**
* =========================================================================
* File : AlphaMapCalculator.h
* Project : 0 A.D.
* Description : Determine which alpha blend map fits a given shape.
* =========================================================================
*/
#ifndef INCLUDED_ALPHAMAPCALCULATOR
#define INCLUDED_ALPHAMAPCALCULATOR
#include <string.h>
#include "BlendShapes.h"
// defines for blendmap flipping/rotating
#define BLENDMAP_FLIPV 0x01
#define BLENDMAP_FLIPU 0x02
#define BLENDMAP_ROTATE90 0x04
#define BLENDMAP_ROTATE180 0x08
#define BLENDMAP_ROTATE270 0x10
///////////////////////////////////////////////////////////////////////////////
// CAlphaMapCalculator: functionality for calculating which alpha blend map
// fits a given shape
namespace CAlphaMapCalculator {
// Calculate: return the index of the blend map that fits the given shape,
// and the set of flip/rotation flags to get the shape correctly oriented
int Calculate(BlendShape8 shape,unsigned int& flags);
}
#endif