ex_copygroups.py

import Rhino
from Rhino.Commands import *
from scriptcontext import doc

def RhinoUpdateObjectGroups(obj, group_map):
  if obj == None: return

  attrib_group_count = obj.Attributes.GroupCount
  if attrib_group_count == 0: return

  doc = obj.Document
  if doc == None: return

  groups = doc.Groups

  group_count = groups.Count
  if group_count == 0: return

  if group_map.Count == 0:
    for i in range(0, group_count):
      group_map.append(-1)

  attributes = obj.Attributes
  group_list = attributes.GetGroupList()
  if group_list == None: return
  attrib_group_count = group_list.Length

  for i in range(0, attrib_group_count):
    old_group_index = group_list[i]
    new_group_index = group_map[old_group_index]
    if new_group_index == -1:
      new_group_index = doc.Groups.Add()
      group_map[old_group_index] = new_group_index
    group_list[i] = new_group_index

  attributes.RemoveFromAllGroups()
  for i in range(0, attrib_group_count):
    attributes.AddToGroup(group_list[i])

  obj.CommitChanges()

def RunCommand():
  go = Rhino.Input.Custom.GetObject()
  go.SetCommandPrompt("Select objects to copy in place")
  go.GroupSelect = True
  go.SubObjectSelect = False
  go.GetMultiple(1, 0)
  if go.CommandResult() != Result.Success:
    return go.CommandResult()

  xform = Rhino.Geometry.Transform.Identity
  group_map = []

  for obj_ref in go.Objects():
    if obj_ref != None:
      obj = obj_ref.Object()
      duplicate = doc.Objects.Transform(obj_ref.ObjectId, xform, False)
      RhinoUpdateObjectGroups(obj, group_map)
  doc.Views.Redraw()
  return Result.Success
  
if __name__ == "__main__":
    RunCommand()