# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1441735055 -7200
# Node ID ed365be00a6077f7012f4521ea35f1053be04b25
# Parent  3e68ec96af01a616782a4e8a0d93573ddfdd03ab
Fixed light/dark row switching.

diff -r 3e68ec96af01 -r ed365be00a60 optimiser.py
--- a/optimiser.py	Tue Sep 08 19:52:24 2015 +0200
+++ b/optimiser.py	Tue Sep 08 19:57:35 2015 +0200
@@ -121,8 +121,8 @@
 
     chosen = []
 
-    light = True
-    for u, bu in zip(usage, base_usage):
+    for row, (u, bu) in enumerate(zip(usage, base_usage)):
+        light = row % 2
         best = 0
         best_bases = None
         best_missing = None
@@ -144,11 +144,11 @@
                 best_map = tone_map
                 best = count
         chosen.append((best, best_bases or bases, best_map or tone_map, best_missing or missing))
-        light = not light
 
     output = []
 
     for row, (tr, ch) in enumerate(zip(toned, chosen)):
+        light = row % 2
         o = []
         for column, t in enumerate(tr):
             best, bases, tone_map, missing = ch