WebCore/ksvg2/svg/SVGFESpotLightElementImpl.cpp

/*
     Copyright (C) 2005 Oliver Hunt <ojh16@student.canterbury.ac.nz>
     
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
     version 2 of the License, or (at your option) any later version.
     
     This library is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     Library General Public License for more details.
     
     You should have received a copy of the GNU Library General Public License
     along with this library; see the file COPYING.LIB.  If not, write to
     the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
     Boston, MA 02111-1307, USA.
 */

#include "config.h"
#if SVG_SUPPORT
#include "SVGFESpotLightElementImpl.h"

#include "SVGAnimatedNumberImpl.h"

namespace WebCore {

SVGFESpotLightElementImpl::SVGFESpotLightElementImpl(const QualifiedName& tagName, DocumentImpl *doc) : 
SVGFELightElementImpl(tagName, doc)
{
}

SVGFESpotLightElementImpl::~SVGFESpotLightElementImpl()
{
}

KCLightSource *SVGFESpotLightElementImpl::lightSource() const
{
    KCanvasPoint3F pos(x()->baseVal(), y()->baseVal(), z()->baseVal());
    //convert lookAt to a direction
    KCanvasPoint3F direction(pointsAtX()->baseVal() - pos.x(), 
                             pointsAtY()->baseVal() - pos.y(), 
                             pointsAtZ()->baseVal() - pos.z());
    direction.normalize();
    return new KCSpotLightSource(pos, direction, specularExponent()->baseVal(), limitingConeAngle()->baseVal());
}

}
#endif // SVG_SUPPORT