Add color definitions

graphs/colors.py

@@ -0,0 +1,37 @@
+# =============================================================================
+# Copyright (C) 2010 Diego Duclos
+#
+# This file is part of pyfa.
+#
+# pyfa is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# pyfa 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with pyfa.  If not, see <http://www.gnu.org/licenses/>.
+# =============================================================================
+
+
+# In HSL format
+BASE_COLORS = (
+    (0 / 360.0, 1.0, 0.5, 'Red'),
+    (120 / 360.0, 1.0, 0.5, 'Green'),
+    (240 / 360.0, 1.0, 0.5, 'Blue'),
+    (56 / 360.0, 1.0, 0.5, 'Yellow'),
+    (180 / 360.0, 1.0, 0.5, 'Cyan'),
+    (300 / 360.0, 1.0, 0.5, 'Magenta'),
+    (40 / 360.0, 1.0, 0.5, 'Orange'),
+    (275 / 360.0, 1.0, 0.5, 'Purple'))
+
+
+def hsl_to_hsv(hsl):
+    h, s, l = hsl
+    s *= l if (l < 0.5) else (1 - l)
+    l += s
+    return (h, 2 * s / l, l)