much better manual mode

diff --git a/src/manual.py b/src/manual.py
index 67f58e0..9b22316 100644 (file)
--- a/src/manual.py
+++ b/src/manual.py
@@ -22,6 +22,9 @@ class Screen:
         self._screen.blit(pg_img, (0, 0))
         pygame.display.flip()
 
+def dst((x1, y1), (x2, y2)):
+    return (x1 - x2) ** 2 + (y1 - y2) ** 2
+
 def find_lines(im_orig):
     # TODO rename, refactor, comment
 
@@ -34,7 +37,7 @@ def find_lines(im_orig):
     hoshi = lambda c: draw.ellipse((c[0] - 1, c[1] - 1, c[0] + 1, c[1] + 1),
                  fill=(255, 64, 64))
     corners = []
-    color = (64, 64, 255)
+    color = (32, 255, 32)
     line_width = 1
     lines_r = []
 
@@ -47,29 +50,31 @@ def find_lines(im_orig):
                 else:
                     raise UserQuitError 
             if event.type == pygame.MOUSEBUTTONDOWN:
+                np = pygame.mouse.get_pos()
                 if len(corners) >= 4: 
-                    corners = []
+                    corners.sort(key=lambda p: dst(p, np))
+                    corners = corners[1:]
+                corners.append(np)
+                (x, y) = corners[-1]
+                draw.line((x-2, y, x + 2, y), fill=color)
+                draw.line((x, y+2, x, y-2), fill=color)
+                if len(corners) == 4:
                     im = im_orig.copy()
                     draw = ImageDraw.Draw(im)
-
-                if len(corners) < 4:
-                    corners.append(pygame.mouse.get_pos())
-                    draw.point(corners[:-1], fill=color)
-                    if len(corners) == 4:
-                        l_vert, l_hor = lines(corners)
-                        for l in l_vert:
-                            draw.line(l, fill=color, width=line_width)
-                        for l in l_hor:
-                            draw.line(l, fill=color, width=line_width)
-                        # TODO sort by distance
-                        l_vert.sort()
-                        l_hor.sort()
-                        for i in [3, 9, 15]:
-                            for j in [3, 9, 15]:
-                                hoshi(intersection(line(l_vert[i][0], l_vert[i][1]),
-                                                   line(l_hor[j][0], l_hor[j][1])))
-                        lines_r = [[l2ad(l, im.size) for l in l_vert], 
-                                   [l2ad(l, im.size) for l in l_hor]]
+                    l_vert, l_hor = lines(corners)
+                    for l in l_vert:
+                        draw.line(l, fill=color, width=line_width)
+                    for l in l_hor:
+                        draw.line(l, fill=color, width=line_width)
+                    # TODO sort by distance
+                    l_vert.sort()
+                    l_hor.sort()
+                    for i in [3, 9, 15]:
+                        for j in [3, 9, 15]:
+                            hoshi(intersection(line(l_vert[i][0], l_vert[i][1]),
+                                               line(l_hor[j][0], l_hor[j][1])))
+                    lines_r = [[l2ad(l, im.size) for l in l_vert], 
+                               [l2ad(l, im.size) for l in l_hor]]
 
         screen.display_picture(im)
         clock.tick(15)