WebCore/svg/SVGFESpotLightElement.cpp

   1 /*
   2      Copyright (C) 2005 Oliver Hunt <ojh16@student.canterbury.ac.nz>
   3
   4      This library is free software; you can redistribute it and/or
   5      modify it under the terms of the GNU Library General Public
   6      License as published by the Free Software Foundation; either
   7      version 2 of the License, or (at your option) any later version.
   8
   9      This library is distributed in the hope that it will be useful,
  10      but WITHOUT ANY WARRANTY; without even the implied warranty of
  11      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12      Library General Public License for more details.
  13
  14      You should have received a copy of the GNU Library General Public License
  15      along with this library; see the file COPYING.LIB.  If not, write to
  16      the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  17      Boston, MA 02110-1301, USA.
  18  */
  19
  20 #include "config.h"
  21
  22 #if ENABLE(SVG) && ENABLE(FILTERS)
  23 #include "SVGFESpotLightElement.h"
  24 #include "SVGSpotLightSource.h"
  25
  26 namespace WebCore {
  27
  28 SVGFESpotLightElement::SVGFESpotLightElement(const QualifiedName& tagName, Document* doc)
  29     : SVGFELightElement(tagName, doc)
  30 {
  31 }
  32
  33 SVGFESpotLightElement::~SVGFESpotLightElement()
  34 {
  35 }
  36
  37 PassRefPtr<LightSource> SVGFESpotLightElement::lightSource() const
  38 {
  39     FloatPoint3D pos(x(), y(), z());
  40
  41     // convert lookAt to a direction
  42     FloatPoint3D direction(pointsAtX() - pos.x(),
  43                            pointsAtY() - pos.y(),
  44                            pointsAtZ() - pos.z());
  45
  46     direction.normalize();
  47     return SpotLightSource::create(pos, direction, specularExponent(), limitingConeAngle());
  48 }
  49
  50 }
  51
  52 #endif // ENABLE(SVG)
  53
  54 // vim:ts=4:noet