added code for cutting center hole and lines for assembling from multiple parts

prototype/circles.py

@@ -193,7 +193,8 @@ class PlateLayout:
 
         # compute coordinates and various measurements for fixed radii of plate and tubes
         self.target_plate_radius = 160.0
-        self.target_radius_1 = 50.0
+        self.target_center_hole_radius = 7.5
+        self.target_radius_1 = 50.2
         self.target_radius_2 = 20.0
         teeth = 200
 
@@ -397,6 +398,32 @@ class PlateLayout:
         f_lines = f.readlines()
         f.close()
 
+
+        circle_found = False
+        for k in range(len(f_lines)):
+            current_line = f_lines[k]
+
+            if 'transform' in current_line:
+                # rotate gear such that teeth match the cut lines
+                index = current_line.find('"\n')
+                f_lines[k] = current_line[0:index] + " rotate(0.9)" + current_line[-2:]
+
+            if 'd="m ' in current_line:
+                # remove center whole drawn by gear-dev
+                gear_data = current_line
+                index = gear_data.find('z') # end of path containing gear outline coordinates
+
+                f_lines[k] = gear_data[0:index+1] + gear_data[-2:]
+
+
+            if '<circle' in current_line:
+                circle_found = True
+
+            if circle_found and 'r=' in current_line:
+                # adjust center hole radius
+                f_lines[k] = '       r="{}mm"\n'.format(self.target_center_hole_radius)
+
+        # delete last line with </svg> command
         f_lines.remove(f_lines[-1])
 
         # output plate as svg
@@ -444,7 +471,6 @@ class PlateLayout:
             f_lines = f_lines + text
             pass
 
-
         # output cuts for big circles
         for k, c in self.tube_1_cuts.items():
             text = svg_rectangle(k, 'cut', c['center'], c['length'], c['width'], c['angle_deg'])
@@ -462,8 +488,8 @@ class PlateLayout:
             a = a/360.0 * 2.0 * np.pi
             r1 = np.linalg.norm(np.array(self.tube_1_coords[k])) - self.target_radius_1
             vunit = np.array([np.cos(a), np.sin(a)])
-            p1 = np.zeros(2)
-            p2 = p1 + vunit * r1
+            p1 = vunit * self.target_center_hole_radius
+            p2 = vunit * r1
             text = svg_line(p1, p2, 0.1)
             f_lines = f_lines + text
 
@@ -476,7 +502,6 @@ class PlateLayout:
 
             pass
 
-
         f_lines.append('</svg>\n')
 
         # write new svg image