2 * Copyright (C) 2009-2011 Andy Spencer <andy753421@gmail.com>
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
9 * This program 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
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 #ifndef __AWEATHER_COLORMAP_H__
19 #define __AWEATHER_COLORMAP_H__
25 gint type; // From RSL e.g. DZ_INDEX
26 gchar *file; // Basename of the colors file
27 gchar name[64]; // Name of the colormap (line 1)
28 gfloat scale; // Map values to color table idx (line 2)
29 gfloat shift; // index = value*scale + shift (line 3)
30 gint len; // Length of data
31 guint8 (*data)[4]; // The actual colormap (line 4..)
34 extern AWeatherColormap colormaps[];
36 static inline guint8 *colormap_get(AWeatherColormap *colormap, float value)
38 int idx = value * colormap->scale + colormap->shift;
39 return colormap->data[CLAMP(idx, 0, colormap->len)];