/* * 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> * Copyright (C) 2011 University of Szeged * Copyright (C) 2011 Renata Hodovan <reni@webkit.org> * * 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. */ #include "config.h" #include "PointLightSource.h" #include "FilterEffect.h" #include <wtf/text/TextStream.h> namespace WebCore { void PointLightSource::initPaintingData(const FilterEffect& filterEffect, PaintingData&) { m_bufferPosition.setXY(filterEffect.mapPointFromUserSpaceToBuffer(m_userSpacePosition.xy())); // To scale Z, map a point offset from m_userSpacePosition in the x direction by z. FloatPoint mappedZ = filterEffect.mapPointFromUserSpaceToBuffer({ m_userSpacePosition.x() + m_userSpacePosition.z(), m_userSpacePosition.y() }); m_bufferPosition.setZ(mappedZ.x() - m_bufferPosition.x()); } LightSource::ComputedLightingData PointLightSource::computePixelLightingData(const PaintingData& paintingData, int x, int y, float z) const { FloatPoint3D lightVector = { m_bufferPosition.x() - x, m_bufferPosition.y() - y, m_bufferPosition.z() - z }; return { lightVector, paintingData.initialLightingData.colorVector, lightVector.length() }; } bool PointLightSource::setX(float x) { if (m_userSpacePosition.x() == x) return false; m_userSpacePosition.setX(x); return true; } bool PointLightSource::setY(float y) { if (m_userSpacePosition.y() == y) return false; m_userSpacePosition.setY(y); return true; } bool PointLightSource::setZ(float z) { if (m_userSpacePosition.z() == z) return false; m_userSpacePosition.setZ(z); return true; } TextStream& PointLightSource::externalRepresentation(TextStream& ts) const { ts << "[type=POINT-LIGHT] "; ts << "[position=\"" << position() << "\"]"; return ts; } }; // namespace WebCore