debugged conversion to python3

now accepts file through python not stdin
now returns a list of commands instead of printing them
still not modified for grbl

svg2gcode.py

@@ -6,56 +6,113 @@ import shapes as shapes_pkg
 from shapes import point_generator
 from config import *
 
-def generate_gcode():
+path = "./svg/example.svg"
+path = "./svg/big_example.svg"
+tree = ET.parse(path)
+
+debug = False
+
+
+def generate_gcode(tree):
     svg_shapes = set(['rect', 'circle', 'ellipse', 'line', 'polyline', 'polygon', 'path'])
-    
-    tree = ET.parse(sys.stdin)
+
+    commands = []
+
+    # tree = ET.parse(sys.stdin)
     root = tree.getroot()
-    
+
+    # print("\n printing root.iter")
+    # for i in root.iter():
+    #     print(i.tag)
+    #
+    # print("\n printing root with tag and attrib")
+    # for i in root:
+    #     print(i.tag, i.attrib)
+
     width = root.get('width')
     height = root.get('height')
+
+
+
     if width == None or height == None:
         viewbox = root.get('viewBox')
         if viewbox:
             _, _, width, height = viewbox.split()                
 
     if width == None or height == None:
-        print "Unable to get width and height for the svg"
+        print("Unable to get width and height for the svg")
         sys.exit(1)
 
+
+    print("\n width / height")
+    print(width, height)
+
     width = float(width)
     height = float(height)
 
     scale_x = bed_max_x / max(width, height)
     scale_y = bed_max_y / max(width, height)
 
-    print preamble 
-    
+    print("\npreamble")
+    print(preamble)
+    commands.append(preamble)
+
+    print("\n begin main loop")
+
     for elem in root.iter():
-        
+
+        if debug:
+            print("\nelem")
+            print(elem)
+
         try:
             _, tag_suffix = elem.tag.split('}')
         except ValueError:
             continue
 
+
         if tag_suffix in svg_shapes:
+
+            if debug:
+                print("\ntag_suffix")
+                print(tag_suffix)
+
             shape_class = getattr(shapes_pkg, tag_suffix)
             shape_obj = shape_class(elem)
             d = shape_obj.d_path()
             m = shape_obj.transformation_matrix()
 
             if d:
-                print shape_preamble 
+                if debug:
+                    print("\nshape preamble")
+                    print(shape_preamble)
+                commands.append(shape_preamble)
                 p = point_generator(d, m, smoothness)
+                # print("\npoint_generator\n", p)
+                # for i in p:
+                #     print(i)
                 for x,y in p:
-                    if x > 0 and x < bed_max_x and y > 0 and y < bed_max_y:  
-                        print "G1 X%0.1f Y%0.1f" % (scale_x*x, scale_y*y) 
-                print shape_postamble
+                    #if x > 0 and x < bed_max_x and y > 0 and y < bed_max_y:
+                    if debug:
+                        print("G1 X%0.1f Y%0.1f" % (scale_x*x, scale_y*y))
+                    commands.append("G1 X%0.1f Y%0.1f" % (scale_x*x, scale_y*y))
 
-    print postamble 
+                    # else:
+                    #     print("out of bed")
+
+                if debug:
+                    print(shape_postamble)
+                commands.append(shape_postamble)
+
+
+    print(postamble)
+    commands.append(postamble)
+    return commands
 
 if __name__ == "__main__":
-    generate_gcode()
+    c = generate_gcode(tree)
+    for i in c:
+        print(i)