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      1 /*
      2  * Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann (at) kde.org>
      3  * Copyright (C) 2004, 2005 Rob Buis <buis (at) kde.org>
      4  * Copyright (C) 2005 Eric Seidel <eric (at) webkit.org>
      5  * Copyright (C) 2010 Zoltan Herczeg <zherczeg (at) webkit.org>
      6  * Copyright (C) 2011 University of Szeged
      7  * Copyright (C) 2011 Renata Hodovan <reni (at) webkit.org>
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY UNIVERSITY OF SZEGED ``AS IS'' AND ANY
     19  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     21  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL UNIVERSITY OF SZEGED OR
     22  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     23  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     24  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     25  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     26  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #include "config.h"
     32 
     33 #include "core/platform/graphics/filters/PointLightSource.h"
     34 
     35 #include "core/platform/text/TextStream.h"
     36 
     37 namespace WebCore {
     38 
     39 void PointLightSource::initPaintingData(PaintingData&)
     40 {
     41 }
     42 
     43 void PointLightSource::updatePaintingData(PaintingData& paintingData, int x, int y, float z)
     44 {
     45     paintingData.lightVector.setX(m_position.x() - x);
     46     paintingData.lightVector.setY(m_position.y() - y);
     47     paintingData.lightVector.setZ(m_position.z() - z);
     48     paintingData.lightVectorLength = paintingData.lightVector.length();
     49 }
     50 
     51 bool PointLightSource::setX(float x)
     52 {
     53     if (m_position.x() == x)
     54         return false;
     55     m_position.setX(x);
     56     return true;
     57 }
     58 
     59 bool PointLightSource::setY(float y)
     60 {
     61     if (m_position.y() == y)
     62         return false;
     63     m_position.setY(y);
     64     return true;
     65 }
     66 
     67 bool PointLightSource::setZ(float z)
     68 {
     69     if (m_position.z() == z)
     70         return false;
     71     m_position.setZ(z);
     72     return true;
     73 }
     74 
     75 static TextStream& operator<<(TextStream& ts, const FloatPoint3D& p)
     76 {
     77     ts << "x=" << p.x() << " y=" << p.y() << " z=" << p.z();
     78     return ts;
     79 }
     80 
     81 TextStream& PointLightSource::externalRepresentation(TextStream& ts) const
     82 {
     83     ts << "[type=POINT-LIGHT] ";
     84     ts << "[position=\"" << position() << "\"]";
     85     return ts;
     86 }
     87 
     88 }; // namespace WebCore
     89