Better understand. Thanks slb for these explanation. I Cant use scaling in this case as the points are the result of crossing lines, so at any scale the resulting point of two lines crossing can be very close to any other point in the model. This gave me an idea for a very bad workaround. Do not like it, but it works. this way SU does not seem to try sharing same vertex... pt1 = Geom::Point3d.new(0.98787,0.926013,0) pt2 = Geom::Point3d.new(0.988135,0.925025,0) pt3 = Geom::Point3d.new(0.977696,0.924673,0) grp1 = Sketchup.active_model.entities.add_group grp1.entities.add_line(pt3,pt2) grp2 = Sketchup.active_model.entities.add_group grp2.entities.add_line(pt2,pt1) grp1.explode grp2.explode Thks again Pascal

@jolran said: As a continuation of Thomthoms advice. Should you ever want to create a C-extension easily for distance between Points the code is already written and available https://bitbucket.org/thomthom/sketchup-ruby-c-extension/src/e2fe0f2e43e43ebae568535b6d7a98e160b4624c/src/Example%20-%20Basics/SXBasics.c?at=default Note: That example is OLD! You can refer to it for how I resolve the distance calculation, but had I done that today I would have done it in C++ using Visual Studio and Xcode: https://github.com/SketchUp/ruby-c-extension-examples

Thanks for your comments. It's very usefull for me to know what is your perception of this kind of picture to improve the realism of trees and plants and try to integrate this into the tree plugin. Thanks Pascal

@chris fullmer said: I do this with my plugins. They all get installed in a submenu called "CLF Tools" or something. This is what I would like to achieve. @chris fullmer said: It is possible because I know how to check to see if that submenu object exists. Then add to it if it does exist, or create it if it does not exist. Do not understand how you do this if the other plugin is not installed or not already loaded by SU ? But I will have a look at Edge to see if I understand how it works. Thanks for your answer Pascal

FYI => just some thoughts; Typically windows explorer does not support file tree printing but you can down a small app from MS that allows to do that and avoids typing in long path. There is also a tree command but you get a lots of paper then; windows XP , vista, w7 and w8 do not by default show the administrator logon at the welcome screen so I doubt you are logged on as admin and normally do not want to be. You have to separately activate it and that activation is different vs version of the OS see this http://www.raymond.cc/blog/display-administrator-account-on-windows-xp-welcome-screen/; Initially when the SU2013 released the plugin folder "Plugin" would not show in the menu bar. It required both su_examples dir and assocated rb file or a plugin that activated. Those are not in your file tree maybe not needed now. https://productforums.google.com/forum/#!mydiscussions/sketchup/wgHev0V84Gg Are the two PCs exactly the same; Compare file tree of both since one works and other does not;

Thanks a lot for your answer. F.....g doc and su apis.

The native 'select' tool will often return its array in the order of picking, BUT this is not guaranteed, and of course if you pick a curve, then all of its edges are added in the curves edges' order... You can make a Tool class... where the selection is initially cleared and the user is prompted to select things - these can be added to the model.selection, and also in that case each selected object can be pushed into your own array, so you can be sure of the order of that array's order of picking... What is it exactly your seek to achieve ?

But remember : @thomthom said: It will work on all systems that have IE10 or newer installed.

Annoying, why don't you state out this plugin is not actually free and price for full version? It felt disgusted after install it and literally use it during work and it just freezes your SketchUp only because you don't pay money and your website for buying also only shows a blank box in the middle without any way to actually purchase or price. You are really not a pleasant way to do business at all.