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/*
* Copyright (C) 2007 Eric Seidel <eric@webkit.org>
*
* 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., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include "core/svg/ColorDistance.h"
#include "platform/graphics/Color.h"
namespace WebCore {
Color ColorDistance::addColors(const Color& first, const Color& second)
{
return Color(first.red() + second.red(), first.green() + second.green(), first.blue() + second.blue());
}
float ColorDistance::distance(const Color& fromColor, const Color& toColor)
{
int redDiff = toColor.red() - fromColor.red();
int greenDiff = toColor.green() - fromColor.green();
int blueDiff = toColor.blue() - fromColor.blue();
// This is just a simple distance calculation, not respecting color spaces
return sqrtf(redDiff * redDiff + blueDiff * blueDiff + greenDiff * greenDiff);
}
}
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