mesh_show_vgroup_weights.py 文件源码

def avail_vgroups(self, context):
        if context is None:
            return []
        ob = context.active_object
        bm = bmesh.from_edit_mesh(ob.data)
        dvert_lay = bm.verts.layers.deform.active
        items = []
        self.vertex = bm.select_history.active.index

        dvert = bm.select_history.active[dvert_lay]

        #XXX since we need an identifier here, user won't be able to add a vgroup with that name ('-1')
        #XXX could check against vgroup names and find an unused name, but it's a rare case after all.
        items.append(("-1", "New Vertex Group", "Add a new vertex group to the active object", -1))

        for i in ob.vertex_groups:
            if i.index not in dvert.keys():
                items.append((i.name, i.name, str(i.index), i.index))

        return items