less parameters for manual.lines

diff --git a/manual.py b/manual.py
index c5b702d..83e024e 100644 (file)
--- a/manual.py
+++ b/manual.py
@@ -61,10 +61,10 @@ def find_lines(im_orig):
                                   width=line_width)
                         draw.line((corners[3], corners[0]), fill=color,
                                   width=line_width)
-                        l_vert = lines(corners, 0)
+                        l_vert = lines(corners)
                         for l in l_vert:
                             draw.line(l, fill=color, width=line_width)
-                        l_hor = lines(corners[1:4] + [corners[0]], 0)
+                        l_hor = lines(corners[1:4] + [corners[0]])
                         for l in l_hor:
                             draw.line(l, fill=color, width=line_width)
                         l_vert += [(corners[0], corners[3]),
@@ -83,11 +83,14 @@ def find_lines(im_orig):
         screen.display_picture(im)
         clock.tick(15)
 
-def lines(corners, n):
+def lines(corners):
+    return _lines(corners, 0)
+
+def _lines(corners, n):
     if n == 0:
         x = half_line(corners)
-        return (lines([corners[0], x[0], x[1], corners[3]], n + 1) + [x] + 
-                lines([x[0], corners[1], corners[2], x[1]], n + 1))
+        return (_lines([corners[0], x[0], x[1], corners[3]], n + 1) + [x] + 
+                _lines([x[0], corners[1], corners[2], x[1]], n + 1))
     else:
         x = half_line(corners)
         c = intersection(line(x[0], corners[2]), line(corners[1], corners[3]))
@@ -96,9 +99,9 @@ def lines(corners, n):
              intersection(line(corners[2], corners[3]), line(c,d)))
         l2 = half_line([corners[0], l[0], l[1], corners[3]])
         if n == 1:
-            return ([l, l2] + lines([l[0], l2[0], l2[1], l[1]], 2)
-                    + lines([corners[0], l2[0], l2[1], corners[3]], 2)
-                    + lines([l[0], corners[1], corners[2], l[1]], 2))
+            return ([l, l2] + _lines([l[0], l2[0], l2[1], l[1]], 2)
+                    + _lines([corners[0], l2[0], l2[1], corners[3]], 2)
+                    + _lines([l[0], corners[1], corners[2], l[1]], 2))
         if n == 2:
             return [l, l2]