manual mode -- arbitrary order of corners

diff --git a/manual.py b/manual.py
index 83e024e..55dfdd0 100644 (file)
--- a/manual.py
+++ b/manual.py
@@ -53,24 +53,12 @@ def find_lines(im_orig):
                     corners.append(pygame.mouse.get_pos())
                     draw.point(corners[:-1], fill=color)
                     if len(corners) == 4:
-                        draw.line((corners[0], corners[1]), fill=color,
-                                  width=line_width)
-                        draw.line((corners[1], corners[2]), fill=color,
-                                  width=line_width)
-                        draw.line((corners[2], corners[3]), fill=color,
-                                  width=line_width)
-                        draw.line((corners[3], corners[0]), fill=color,
-                                  width=line_width)
-                        l_vert = lines(corners)
+                        l_vert, l_hor = lines(corners)
                         for l in l_vert:
                             draw.line(l, fill=color, width=line_width)
-                        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]),
-                                   (corners[1], corners[2])]
-                        l_hor += [(corners[0], corners[1]),
-                                   (corners[2], corners[3])]
+                        #TODO sort by distance
                         l_vert.sort()
                         l_hor.sort()
                         for i in [3, 9, 15]:
@@ -84,7 +72,13 @@ def find_lines(im_orig):
         clock.tick(15)
 
 def lines(corners):
-    return _lines(corners, 0)
+    cor_d = sorted([(corners[0][0] * c[1] - c[0] * corners[0][1], c) for c in
+                    corners[1:]])
+    corners = [corners[0]] + [c for _, c in cor_d]
+    return (_lines(corners, 0) + [(corners[0], corners[3]),
+                                  (corners[1], corners[2])],
+            _lines(corners[1:4] + [corners[0]], 0) + 
+            [(corners[0], corners[1]), (corners[2], corners[3])])
 
 def _lines(corners, n):
     if n == 0: