# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1443659874 -7200
# Node ID aabad380ed5941da6bfa64f40abb2d671613aa18
# Parent  d33be469e542d053c25ae5ef48b4bd9131782e01
Permit stronger saturation and desaturation using multiple option flags.

diff -r d33be469e542 -r aabad380ed59 optimiser.py
--- a/optimiser.py	Thu Oct 01 02:24:13 2015 +0200
+++ b/optimiser.py	Thu Oct 01 02:37:54 2015 +0200
@@ -117,8 +117,8 @@
 
     input_filename, output_filename = sys.argv[1:3]
     rotate = "-r" in sys.argv[3:]
-    saturate = "-s" in sys.argv[3:]
-    desaturate = "-d" in sys.argv[3:]
+    saturate = sys.argv[3:].count("-s")
+    desaturate = sys.argv[3:].count("-d")
 
     x = EXIF.process_file(open(input_filename))
     im = PIL.Image.open(input_filename)
@@ -133,7 +133,7 @@
         for x in range(0, width):
             rgb = im.getpixel((x, y))
             if saturate or desaturate:
-                rgb = saturate_rgb(rgb, saturate and 0.5 or 2)
+                rgb = saturate_rgb(rgb, saturate and math.pow(0.5, saturate) or math.pow(2, desaturate))
             value = get_value((x, y), rgb, width, height)
             im.putpixel((x, y), value)
             if not c.has_key(value):