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SVGFESpotLightElement.cpp

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00001 /*
00002      Copyright (C) 2005 Oliver Hunt <ojh16@student.canterbury.ac.nz>
00003      
00004      This library is free software; you can redistribute it and/or
00005      modify it under the terms of the GNU Library General Public
00006      License as published by the Free Software Foundation; either
00007      version 2 of the License, or (at your option) any later version.
00008      
00009      This library is distributed in the hope that it will be useful,
00010      but WITHOUT ANY WARRANTY; without even the implied warranty of
00011      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012      Library General Public License for more details.
00013      
00014      You should have received a copy of the GNU Library General Public License
00015      along with this library; see the file COPYING.LIB.  If not, write to
00016      the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00017      Boston, MA 02110-1301, USA.
00018  */
00019 
00020 #include "config.h"
00021 
00022 #if ENABLE(SVG) && ENABLE(SVG_FILTERS)
00023 #include "SVGFESpotLightElement.h"
00024 #include "SVGSpotLightSource.h"
00025 
00026 namespace WebCore {
00027 
00028 SVGFESpotLightElement::SVGFESpotLightElement(const QualifiedName& tagName, Document* doc)
00029     : SVGFELightElement(tagName, doc)
00030 {
00031 }
00032 
00033 SVGFESpotLightElement::~SVGFESpotLightElement()
00034 {
00035 }
00036 
00037 SVGLightSource* SVGFESpotLightElement::lightSource() const
00038 {
00039     FloatPoint3D pos(x(), y(), z());
00040 
00041     // convert lookAt to a direction
00042     FloatPoint3D direction(pointsAtX() - pos.x(), 
00043                            pointsAtY() - pos.y(), 
00044                            pointsAtZ() - pos.z());
00045 
00046     direction.normalize();
00047     return new SVGSpotLightSource(pos, direction, specularExponent(), limitingConeAngle());
00048 }
00049 
00050 }
00051 
00052 #endif // ENABLE(SVG)
00053 
00054 // vim:ts=4:noet

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