KHtml

SVGFESpotLightElement.cpp
1 /*
2  Copyright (C) 2005 Oliver Hunt <[email protected]>
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 #if ENABLE(SVG) && ENABLE(SVG_FILTERS)
21 #include "SVGFESpotLightElement.h"
22 #include "SVGSpotLightSource.h"
23 
24 namespace WebCore
25 {
26 
27 SVGFESpotLightElement::SVGFESpotLightElement(const QualifiedName &tagName, Document *doc)
28  : SVGFELightElement(tagName, doc)
29 {
30 }
31 
32 SVGFESpotLightElement::~SVGFESpotLightElement()
33 {
34 }
35 
36 SVGLightSource *SVGFESpotLightElement::lightSource() const
37 {
38  FloatPoint3D pos(x(), y(), z());
39 
40  // convert lookAt to a direction
41  FloatPoint3D direction(pointsAtX() - pos.x(),
42  pointsAtY() - pos.y(),
43  pointsAtZ() - pos.z());
44 
45  direction.normalize();
46  return new SVGSpotLightSource(pos, direction, specularExponent(), limitingConeAngle());
47 }
48 
49 }
50 
51 #endif // ENABLE(SVG)
52 
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