lines cache

[imago.git] / linef.py

diff --git a/linef.py b/linef.py
old mode 100755 (executable)
new mode 100644 (file)
index ebfdbea..dae08e3
--- a/linef.py
+++ b/linef.py
@@ -1,9 +1,7 @@
-#!/usr/bin/env python
-
 """Go image recognition lines-finding module"""
 
 import sys
-import math
+from math import sin, cos, pi
 
 try:
     import Image, ImageDraw
@@ -83,6 +81,7 @@ def find_lines(image, show_all, do_something, verbose):
     lines = []
     im_c = im_h2.convert('RGB').convert('RGB', (1, 0.5, 0.5, 0))
     draw_c = ImageDraw.Draw(im_c)
+    bounds = []
 
     for line_l in lines_m:
         im_line = Image.new('L', im_h2.size)
@@ -96,6 +95,9 @@ def find_lines(image, show_all, do_something, verbose):
         for point in line_points:
             draw_c.point(point, fill=(120, 255, 120))
         lines.append(hough1.lines_from_list(line_points))
+        line_points = list(line_points)
+        line_points.sort()
+        bounds += [line_points[0], line_points[-1]]
 
     if show_all:
         do_something(im_c, "hough x lines")
@@ -105,9 +107,9 @@ def find_lines(image, show_all, do_something, verbose):
     for line in [l for s in lines for l in s]:
         draw.line(line_from_angl_dist(line, image.size), fill=(120, 255, 120))
     if show_all:
-        do_something(image_g, "the grid")
-    
-    return lines
+        do_something(image_g, "lines")
+   
+    return lines, lines_m[0][0], lines_m[1][0], bounds, hough1, im_h
 
 def combine(image1, image2):
     im_l1 = image1.load()
@@ -122,8 +124,15 @@ def combine(image1, image2):
     return on_both
 
 def line_from_angl_dist((angle, distance), size):
-    x1 = - size[0] / 2
-    y1 = int(round((x1 * math.sin(angle) - distance) / math.cos(angle))) + size[1] / 2
-    x2 = size[0] / 2 
-    y2 = int(round((x2 * math.sin(angle) - distance) / math.cos(angle))) + size[1] / 2
-    return [(0, y1), (size[0] - 1, y2)]
+    if pi / 4 < angle < 3 * pi / 4:
+        y1 = - size[1] / 2
+        x1 = int(round((y1 * cos(angle) + distance) / sin(angle))) + size[0] / 2
+        y2 = size[1] / 2 
+        x2 = int(round((y2 * cos(angle) + distance) / sin(angle))) + size[0] / 2
+        return [(x1, 0), (x2, size[1])]
+    else:
+        x1 = - size[0] / 2
+        y1 = int(round((x1 * sin(angle) - distance) / cos(angle))) + size[1] / 2
+        x2 = size[0] / 2 
+        y2 = int(round((x2 * sin(angle) - distance) / cos(angle))) + size[1] / 2
+        return [(0, y1), (size[0], y2)]