1/*
2 * Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org>
3 * Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
4 * Copyright (C) 2005 Eric Seidel <eric@webkit.org>
5 * Copyright (C) 2010 Zoltan Herczeg <zherczeg@webkit.org>
6 * Copyright (C) 2011 University of Szeged
7 * Copyright (C) 2011 Renata Hodovan <reni@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#include "platform/graphics/filters/DistantLightSource.h"
33
34#include "platform/text/TextStream.h"
35
36namespace blink {
37
38void DistantLightSource::initPaintingData(PaintingData& paintingData) const
39{
40    float azimuth = deg2rad(m_azimuth);
41    float elevation = deg2rad(m_elevation);
42    paintingData.lightVector.setX(cosf(azimuth) * cosf(elevation));
43    paintingData.lightVector.setY(sinf(azimuth) * cosf(elevation));
44    paintingData.lightVector.setZ(sinf(elevation));
45    paintingData.lightVectorLength = 1;
46}
47
48void DistantLightSource::updatePaintingData(PaintingData&, int, int, float) const
49{
50}
51
52bool DistantLightSource::setAzimuth(float azimuth)
53{
54    if (m_azimuth == azimuth)
55        return false;
56    m_azimuth = azimuth;
57    return true;
58}
59
60bool DistantLightSource::setElevation(float elevation)
61{
62    if (m_elevation == elevation)
63        return false;
64    m_elevation = elevation;
65    return true;
66}
67
68TextStream& DistantLightSource::externalRepresentation(TextStream& ts) const
69{
70    ts << "[type=DISTANT-LIGHT] ";
71    ts << "[azimuth=\"" << azimuth() << "\"]";
72    ts << "[elevation=\"" << elevation() << "\"]";
73    return ts;
74}
75
76} // namespace blink
77