added generation of jigsaw puzzle shape

prototype/circles.py

@@ -19,6 +19,50 @@ def svg_circle(id, name, c, r):
 
     return text
 
+def svg_puzzle(p, size, angle):
+    # convert angle to radians
+    angle = angle / 360.0 * 2.0 * np.pi
+
+
+    # compute points
+    """
+        v1 and v2 are orthogonal vectors
+        
+        construction of points (starting at p):
+        
+           p3 <------   -2 v1  ------ p2
+                                      ^
+                                      |
+                                      v2
+                                      |
+                                      |
+           p4 <-- -v1 --  p -- v1 --> p1
+    
+        then between points p2 and p3 with draw an arc
+    """
+    v1 = np.array([np.cos(angle), np.sin(angle)])
+    v2 = np.array([v1[1], -v1[0]])
+    p1 = p + size * v1
+    p2 = p1 + size * v2
+    p3 = p2 - 2.0 * size * v1
+    p4 = p - size * v1
+
+    # convert to svg units
+    p1 *= scale
+    p2 *= scale
+    p3 *= scale
+    p4 *= scale
+
+    radius_scaled = 1.25 * size * scale
+
+    text = ['      <path \n     '
+            '        id="path666" \n       '
+            '        style="fill:none;stroke:#ff0000;stroke-width:1.60000002" \n'
+            '        d="M {} {} L {} {} A {} {} 0 1 0 {} {} L {} {}"'
+            '      />\n'.format(p1[0], p1[1], p2[0], p2[1], radius_scaled, radius_scaled, p3[0], p3[1], p4[0], p4[1])]
+
+    return text
+
 def svg_half_circle(id, name, c, r, angle, orientation_flag=1):
     # draws half a circle centered at c with radius r
     # angle specifies how the half circle should be rotated
@@ -601,8 +645,8 @@ class PlateLayout:
         outer_point_2 = p4
 
         # truncate gear path
-        for k in range(len(f_lines)):
+        for j in range(len(f_lines)):
-            current_line = f_lines[k]
+            current_line = f_lines[j]
 
             if 'd="m ' in current_line:
                 # remove center whole drawn by gear-dev
@@ -630,6 +674,11 @@ class PlateLayout:
                 pass
                 #f_lines[k] = gear_data[0:index+1] + gear_data[-2:]
 
+        c = self.tube_1_coords[k]
+        angle = self.tube_1_angles[k]
+        text = svg_puzzle(c, 4, angle)
+        f_lines = f_lines + text
+
         return f_lines
 
     def output_whole(self, f_lines):