Do not copy anchor points (for now)

Anchor points turn out to be more complex to copy: they rely on lookup
subtables, which are hard to copy. We'll be refactoring this code to
restore the ability to copy anchor points soon, but for now we'll just
disable the feature.

Author: rmunn

src/extractpoints.py

@@ -654,10 +654,11 @@ def copy_glyph(orig_glyph, new_glyph):
     for dot in dots:
         contour = circle_at(dot, size=args.radius)
         new_glyph.foreground += contour
-    for anchor in orig_glyph.anchorPoints:
-        new_glyph.addAnchorPoint(*anchor)
-    # Or can we just do this?
-    # new_glyph.anchorPoints = orig_glyph.anchorPoints
+    # Commented out because lookup subtables need to be copied before anchor
+    # points can be copied, and lookup subtables are a bit complex.
+    # TODO: Implement copying lookup subtables, then uncomment this.
+    #for anchor in orig_glyph.anchorPoints:
+    #    new_glyph.addAnchorPoint(*anchor)
     return new_glyph  # Probably not needed as the font now contains it
 
 def make_triangles(polygon_data, holes = None):