1 /** @file color.cpp Color
2 *
3 * @authors Copyright © 2007-2013 Daniel Swanson <danij@dengine.net>
4 *
5 * @par License
6 * GPL: http://www.gnu.org/licenses/gpl.html
7 *
8 * <small>This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version. This program is distributed in the hope that it
12 * will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
13 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
14 * Public License for more details. You should have received a copy of the GNU
15 * General Public License along with this program; if not, write to the Free
16 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
17 * 02110-1301 USA</small>
18 */
19
20 #include "de_platform.h"
21 #include "misc/color.h"
22
ColorRawf_AverageColor(ColorRawf * c)23 float ColorRawf_AverageColor(ColorRawf* c)
24 {
25 DENG_ASSERT(c);
26 return (c->red + c->green + c->blue) / 3;
27 }
28
ColorRawf_AverageColorMulAlpha(ColorRawf * c)29 float ColorRawf_AverageColorMulAlpha(ColorRawf* c)
30 {
31 DENG_ASSERT(c);
32 return (c->red + c->green + c->blue) / 3 * c->alpha;
33 }
34