Is Group.definition.entities the same as Group.entities?

nekitu · October 30, 2016, 2:02pm

Is Group.definition.entities the same as Group.entities ?
Are they kept in sync or are they different ? (didnt had time to test)
Thanks!

slbaumgartner · October 30, 2016, 2:17pm

Yes, they are the same. Group.entities is just a convenience alias for Group.definition.entities.

nekitu · October 30, 2016, 2:18pm

thanks

nekitu · October 30, 2016, 2:20pm

well, it would be nice to kill Group.entities in the future. This way you have a clear image of the data model.I guess its hard to do it because of backwards compat.

slbaumgartner · October 30, 2016, 2:26pm

I think it wasn’t always so, but for a while now Group has been implemented as a special case of Component, with some convenience methods such as this and traps to assure uniqueness on edit.

jim_foltz · October 30, 2016, 2:30pm

Why doesn’t SketchUp return the same object?

grp = Sketchup.active_model.selection[0]
p grp.entities
p grp.definition.entities

#<Sketchup::Entities:0x000000214285d0>
#<Sketchup::Entities:0x0000002163df28>

nekitu · October 30, 2016, 2:34pm

can you print the entities for both ? what do they list

slbaumgartner · October 30, 2016, 2:34pm

That’s strange. The API must create an alias reference to the same actual collection. If you examine the contents they are identical, down to the objects contained.

nekitu · October 30, 2016, 2:35pm

ah ok, then that’s the reason for different ptrs

slbaumgartner · October 30, 2016, 2:38pm

Try

p grp.entities.to_a.join("\n")
p grp.definition.to_a.join("\n")