xref: /external/webkit/Source/WebCore/platform/graphics/filters/SpotLightSource.h

/*
 * Copyright (C) 2008 Alex Mathews <possessedpenguinbob@gmail.com>
 * Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org>
 * Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
 * Copyright (C) 2005 Eric Seidel <eric@webkit.org>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#ifndef SpotLightSource_h
#define SpotLightSource_h

#if ENABLE(FILTERS)
#include "LightSource.h"

namespace WebCore {

class SpotLightSource : public LightSource {
public:
    static PassRefPtr<SpotLightSource> create(const FloatPoint3D& position,
        const FloatPoint3D& direction, float specularExponent, float limitingConeAngle)
    {
        return adoptRef(new SpotLightSource(position, direction, specularExponent, limitingConeAngle));
    }

    const FloatPoint3D& position() const { return m_position; }
    bool setX(float);
    bool setY(float);
    bool setZ(float);
    const FloatPoint3D& direction() const { return m_direction; }
    bool setPointsAtX(float);
    bool setPointsAtY(float);
    bool setPointsAtZ(float);

    float specularExponent() const { return m_specularExponent; }
    bool setSpecularExponent(float);
    float limitingConeAngle() const { return m_limitingConeAngle; }
    bool setLimitingConeAngle(float);

    virtual void initPaintingData(PaintingData&);
    virtual void updatePaintingData(PaintingData&, int x, int y, float z);

    virtual TextStream& externalRepresentation(TextStream&) const;

private:
    SpotLightSource(const FloatPoint3D& position, const FloatPoint3D& direction,
        float specularExponent, float limitingConeAngle)
        : LightSource(LS_SPOT)
        , m_position(position)
        , m_direction(direction)
        , m_specularExponent(specularExponent)
        , m_limitingConeAngle(limitingConeAngle)
    {
    }

    FloatPoint3D m_position;
    FloatPoint3D m_direction;

    float m_specularExponent;
    float m_limitingConeAngle;
};

} // namespace WebCore

#endif // ENABLE(FILTERS)

#endif // SpotLightSource_h