rig-generation from metadata, the idea is to input a simple rig with metadata matching preset definitions

these are applied by adding constraints, drivers, control bones etc. making it possible to re-apply changes & improvements to many rigs at once.

testcase makes a finger rig (like in BBB) from 3 bones, the base tagged with an id property "type":"finger".

still missing is a way to update the driver dep's


also fixed an error  in the property UI when the active bone is not on the active layer.

release/scripts/modules/rna_prop_ui.py

@@ -69,6 +69,10 @@ def draw(layout, context, context_member, use_edit = True):
             pass
 
     rna_item = eval("context." + context_member)
+    
+    # poll should really get this...
+    if not rna_item:
+        return
 
     items = rna_item.items()
     items.sort()