You need to look in the API methods for various bits... it's all there... Make a list of the loop's vertices. You get a vertex. You get its point in 3D You get the vertex's edges. For the two edges get its other end's vertex and thence its point. You get the vector between the vertex-point and that end-point in turn. You see if vertor1==vertor2 [or its 'reverse']. If they're not 'equal' then it's a corner... .

I think this post might help.. http://www.sketchucation.com/forums/scf/viewtopic.php?f=289&t=14390

Cool, Merci Matt!

Yes, I remember now figuring this out when I wrote the 3D Text Tool.

Thanks TIG! I just found an easiest way on the forum. ... pages.selected_page = pages["Scene 2"] It was on an older post answered by Jim. http://www.sketchucation.com/forums/scf/viewtopic.php?f=180&t=8704&p=52285

@unknownuser said: Hi, Again... But the start/commit_operation do not undo the variable that changes? It only undo "actions" on the screen, on the model. Then is there a way to act on the variable and undo the new value? Emmanuel, That is sort of an odd request. Can you elaborate on what you want to do, or post some code?

Great Macs! I'll test it as soon I'll go back to my codes. Thanks A lot.

fantastic plugin. extremely useful. thanks

Not realy clear for me yet. If I understand well, that means "transformation" is usefull for add_instance (f.e.) A kind of insert definition transform1 = Geom;;Transformation.new inspoint instance = entities.add_instance componentdefinition, transform1 and "transform!" to modify this instance. instance.transform!(transform2) But I'll get use to it. Thanks both of you for your help.

@unknownuser said: Thanks Jim! Once again, you hit the mark. First, I missed the ".collect" and get a bug on sketchup. Have you got any idea what scan order is prefered in the 'do' loop? Any way to sort the collection? Collect is a Ruby method that just makes a copy of the selections in an Array. There isn't any order to the entities returned (that I am aware of.) You'll need to sort them manually, possibly by building another array of only the instances. Then, you'll need to decide what to sort on: definition name, color, position, size?

Try something like (bmaxz+$startcoord).to_cm - SUp uses the 'inch' as its units and that's what the bmax returns - if you want it to return dims in other units try things like .to_cm ...

Although the SUp Ruby API doesn't stress it, I think it's safer to put things into () after a method: So UI.messagebox "A message..." becomes UI.messagebox("A message..."), you are then more likely to spot errors like missing quote closing. If you are using Notepad++ (I do too) then set up your Ruby format defaults to say have any strings in red - then if you miss off a closing " everything afterwards is coloured red and stands out as wrong...

Sorry, was a response to this post ...... Jim Global Moderator Posts: 2091 Joined: Mon Nov 12, 2007 10:13 pm Name: Jim Foltz Operating system: XP Pro SP3 SketchUp version: Google Pro 7.1 .....but the thoughts are free - also my finewood

Try this search argument: http://groups.google.com/group/Ruby-API/search?group=Ruby-API&q=webdialog&qt_g=Search+this+category Todd