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/*
* Copyright (C) 2010 University of Szeged
* Copyright (C) 2010 Zoltan Herczeg
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY UNIVERSITY OF SZEGED ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL UNIVERSITY OF SZEGED OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef FELighting_h
#define FELighting_h
#if ENABLE(FILTERS)
#include "Color.h"
#include "Filter.h"
#include "FilterEffect.h"
#include "LightSource.h"
#include <wtf/ByteArray.h>
// Common base class for FEDiffuseLighting and FESpecularLighting
namespace WebCore {
class FELighting : public FilterEffect {
public:
virtual void apply();
virtual void determineAbsolutePaintRect() { setAbsolutePaintRect(maxEffectRect()); }
protected:
enum LightingType {
DiffuseLighting,
SpecularLighting
};
struct LightingData {
// This structure contains only read-only (SMP safe) data
ByteArray* pixels;
float surfaceScale;
int widthMultipliedByPixelSize;
int widthDecreasedByOne;
int heightDecreasedByOne;
inline void topLeft(int offset, IntPoint& normalVector);
inline void topRow(int offset, IntPoint& normalVector);
inline void topRight(int offset, IntPoint& normalVector);
inline void leftColumn(int offset, IntPoint& normalVector);
inline void interior(int offset, IntPoint& normalVector);
inline void rightColumn(int offset, IntPoint& normalVector);
inline void bottomLeft(int offset, IntPoint& normalVector);
inline void bottomRow(int offset, IntPoint& normalVector);
inline void bottomRight(int offset, IntPoint& normalVector);
};
FELighting(Filter*, LightingType, const Color&, float, float, float, float, float, float, PassRefPtr<LightSource>);
bool drawLighting(ByteArray*, int, int);
inline void inlineSetPixel(int offset, LightingData&, LightSource::PaintingData&,
int lightX, int lightY, float factorX, float factorY, IntPoint& normalVector);
// Not worth to inline every occurence of setPixel.
void setPixel(int offset, LightingData&, LightSource::PaintingData&,
int lightX, int lightY, float factorX, float factorY, IntPoint& normalVector);
LightingType m_lightingType;
RefPtr<LightSource> m_lightSource;
Color m_lightingColor;
float m_surfaceScale;
float m_diffuseConstant;
float m_specularConstant;
float m_specularExponent;
float m_kernelUnitLengthX;
float m_kernelUnitLengthY;
};
} // namespace WebCore
#endif // ENABLE(FILTERS)
#endif // FELighting_h
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