| /* |
| * 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&) const |
| { |
| 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 |
