# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1444579679 -7200
# Node ID 904b2295aca58e32e8eef4378028065140ed81dd
# Parent  a879c7d1d28e7f47144169d350ace2ea3e341880# Parent  854421107591382a6160f85f09a1c09792024e56
Attempt to use alternative colour combinations supplying the most pixels.

diff -r a879c7d1d28e -r 904b2295aca5 optimiser.py
diff -r a879c7d1d28e -r 904b2295aca5 optimiserlib.py
--- a/optimiserlib.py	Sun Oct 11 15:34:12 2015 +0200
+++ b/optimiserlib.py	Sun Oct 11 18:07:59 2015 +0200
@@ -258,17 +258,27 @@
     for y in range(0, height):
         c = get_colours(im, y)
 
+        suggestions = []
+
         for l in get_combinations(c, colours):
             most = [value for f, value in l]
+            missing = 0
+
             for x in range(0, width):
                 rgb = im.getpixel((x, y))
                 value = get_value(rgb, most, True)
                 if value is None:
-                    break # try next combination
-            else:
+                    missing += 1
+
+            if not missing:
                 break # use this combination
+            suggestions.append((missing, l))
+
+        # Find the most accurate suggestion.
+
         else:
-            most = [value for f, value in c[:colours]] # use the first colours
+            suggestions.sort()
+            most = [value for f, value in suggestions[0][1]] # get the combination
 
         for x in range(0, width):
             rgb = im.getpixel((x, y))