| /* |
| * 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> |
| * Copyright (C) 2010 Zoltan Herczeg <zherczeg@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. |
| */ |
| |
| #pragma once |
| |
| #include "FloatPoint3D.h" |
| #include <wtf/RefCounted.h> |
| |
| namespace WTF { |
| class TextStream; |
| } |
| |
| namespace WebCore { |
| |
| enum LightType { |
| LS_DISTANT, |
| LS_POINT, |
| LS_SPOT |
| }; |
| |
| class FilterEffect; |
| |
| class LightSource : public RefCounted<LightSource> { |
| public: |
| struct ComputedLightingData { |
| FloatPoint3D lightVector; |
| FloatPoint3D colorVector; |
| float lightVectorLength; |
| }; |
| |
| struct PaintingData { |
| ComputedLightingData initialLightingData; |
| FloatPoint3D directionVector; |
| float coneCutOffLimit; |
| float coneFullLight; |
| int specularExponent; |
| }; |
| |
| LightSource(LightType type) |
| : m_type(type) |
| { } |
| |
| virtual ~LightSource() = default; |
| |
| LightType type() const { return m_type; } |
| virtual WTF::TextStream& externalRepresentation(WTF::TextStream&) const = 0; |
| |
| virtual void initPaintingData(const FilterEffect&, PaintingData&) = 0; |
| // z is a float number, since it is the alpha value scaled by a user |
| // specified "surfaceScale" constant, which type is <number> in the SVG standard. |
| // x and y are in the coordinates of the FilterEffect's buffer. |
| virtual ComputedLightingData computePixelLightingData(const PaintingData&, int x, int y, float z) const = 0; |
| |
| virtual bool setAzimuth(float) { return false; } |
| virtual bool setElevation(float) { return false; } |
| |
| // These are in user space coordinates. |
| virtual bool setX(float) { return false; } |
| virtual bool setY(float) { return false; } |
| virtual bool setZ(float) { return false; } |
| virtual bool setPointsAtX(float) { return false; } |
| virtual bool setPointsAtY(float) { return false; } |
| virtual bool setPointsAtZ(float) { return false; } |
| |
| virtual bool setSpecularExponent(float) { return false; } |
| virtual bool setLimitingConeAngle(float) { return false; } |
| |
| private: |
| LightType m_type; |
| }; |
| |
| } // namespace WebCore |
| |
| #define SPECIALIZE_TYPE_TRAITS_LIGHTSOURCE(ClassName, Type) \ |
| SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::ClassName) \ |
| static bool isType(const WebCore::LightSource& source) { return source.type() == WebCore::Type; } \ |
| SPECIALIZE_TYPE_TRAITS_END() |