| /* |
| * 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); |
| } |
| |
| } |