Add_group API returns component instance?

[rknmag]

Hi

I am using Sketchup 8.0.14346. In my ruby code when I use add_group API Call, the returned object's class seems to be component instance as shown in the error message here.

model = Sketchup.active_model ent = model.entities tgp = ent.add_group temp_entity_list = tgp.entities
......
==> undefined method `entities' for #Sketchup::ComponentInstance:0x5269634

---

When I try the same code in Ruby console add_group return value class is "Group", this problem comes up only when I use this code in a script. Any help please ?

TIA
rknmag

[thomthom]

I have never experienced that.

Is that your full example? If you add only that to a .rb file - does that happen?
Have you tried with all other plugins not loaded?

[rknmag]

Hi

Thanks for the reply.

This code is part of bigger ruby code, I am not sure, where I am messing up. I created simple ruby file with above code and it works without any problem. I stop loading all other plugin that is not helping. Next I will isolate rest of my code to see why it is happening, in case you have any pointers to look for please let me know.

BTW : My OS is Win 7, I hope it will not have any impact on this issue.

Thanks
rknmag

[thomthom]

I'm afraid I don't know what it could be.

You use the reference to the newly created group immaterially? Or is there code in between?
Is there any code that converts groups to components?

[TIG]

This won't happen unless the base classes have been interfered with - either within your code or some third-party code - OR your code makes the new group into a component before you try to get its entities.
Can you supply more code/context etc...

[rknmag]

Hi

I am checking the class of the add_group() return value immediately, no other code in-between.

Thanks
rknmag

[thomthom]

I think I saw another thread where unexpected entities was returned - think it was fixed by a reinstallation.

Have you tried on another machine?

[rknmag]

Yes, I tried in two different machines. I also uninstalled Sketchup, download latest version and reinstalled but no luck

Thanks
rknmag

[TIG]

If you use this line of code in the Ruby Console what do you get?
tgroup=Sketchup.active_model.active_entities.add_group()
It should return a reference to a Group, something like:
#<Sketchup::Group:0x11379d24>
Then
tents=tgroup.entities
It should return something like:
#<Sketchup::Entities:0x112964ac>
Now try something like:
tents.add_cpoint([1,2,3])
It should now add things to the group ?
If it fails, then at which step??

[rknmag]

Hi

I tried in Ruby console as suggested by you and it works without any issue. For that matter, If I have only this part of the code in a .rb file and load into Sketchup that also works. My problem comes up in my main program where some more rb files are loaded. Unfortunately those files are too many and inter-related, so now I am trying to separate them and load one by one to isolate the offending code.

[rknmag]

Hi

This issue seems to be related to removing "Susan" definition. Please refer the following code, in this If I remove the code, which erases Susan, then the temp_group creation is success else it return ComponentInstance.
And also, I get this error only when I put this code in a rb file and put in "Plugin" directory , if I save the rb file in some other directory and load that file from Ruby console, I don't face this issue.

` component_list = Sketchup.active_model.definitions
cm = component_list["Susan"]
if(cm != nil && cm.count_instances > 0)

If I comment out following line, it works

cm.instances.each { | entity | entity.erase! }
end
entity_list = Sketchup.active_model.entities
temp_group = entity_list.add_group
UI.messagebox("temp_group class: #{temp_group.class}\n")
temp_entity_list = temp_group.entities`

Thanks
rknmag

[TIG]

Why are you working with a template that includes 'Susan' in the first place ??
That template is just an example - make your own to suit your needs...
If this is anything like a reusable script it needs to work with ANY skp...

Is this code inside at least a def xxx()...end method? [I'm not insisting on a module or a class... here]
If your script is loading just 'raw' code at startup it could well make a mess...

[thomthom]

I second TIG's question why you're removing the Susan definition? Why is that essential for the plugin to work?