[Plugin] Exploded Arc Centerpoint Finder UPDATE May 23, 2013

RunnerPack

Hey, EarthMover,

It was my request on this Google Group post that (partially?) inspired Chris F. to make his plugin. Using his idea from that discussion, I made code to find the center-point of two Edges... which I promply discarded when he made his implementation that didn't look like a train-wreck

So, I took his code (without permission; sorry, Chris! ) and made my own tool with a different interface (context menu) that I think adds (some of) the functionality you want. Since you probably wouldn't find it otherwise, here is the thread where I attached mine.

The readme header in the file also explains how other coders can use the new methods for finding the center of a Curve or of any two Edges. I also wanted to add a radius method and the "convert Curve to ArcCurve" function discussed above, but they're still on the todo list. BTW, my plugin also works on Circles and Polygons.

c.plassais

Hi Chris,
Arc Centerpoint Finder translated into French and the attached link http://biblio3d.1fr1.net/plug-in-sketchup-f19/plugin-arc-centerpoint-finder-en-francais-retrouver-le-point-central-d-un-arc-t448.htm#3004

at the next

Christophe

Chris Fullmer

Great, thanks Christophe! I've updated the first post to also include a link to the French version.

Chris

jeff hammond

@chris fullmer said:

Name: Arc Centerpoint Finder
Version: v1.0

wow! nice one.
perfect little timesaver.
thank you

thomthom

There's a wee bug. It adds the CPoint in model.entities instead of model.active_entities - so if you use this inside a group/component it's not added to the correct context.

Panga

Chris, you're a mind reader...I was looking for this function for a long time. Thanks for your help in our sketchup's lives !!

Chris Fullmer

@thomthom said:

There's a wee bug. It adds the CPoint in model.entities instead of model.active_entities - so if you use this inside a group/component it's not added to the correct context.

Oh darn, there was a little while there where I think I forgot about .active_entities and just added everything to the .entities collection. I'll fix it and get it uploaded later today,

Chris

Chris Fullmer

ok, now updated so that when it is used in group/component edit mode, it will add the construction point inside the group that is being edited. Thanks for pointing that out Thom.

So re-download it from the first post in the thread.

Chris

thomthom

August

Thanks Chris,

I found this to be a very readable script for learning a little more Ruby. It's pretty clear from context what it's doing as far as finding a perpendicular direction, creating a temporary "z" from the original two edges, etc. I assume the ".cross" function is the Cross-product from vector algebra, which I vaguely remember, but I'll have to look up what that actually is and why it's called "cross".

Thanks again,
August

kostas_designer

i know it may seem stupid, but why can't i see the context "point at center" menu when i right-click on an arc?

Chris Fullmer

You have to first enable the sketchup ruby script examples from Window > Preferences > Extensions > Ruyb Script Examples (or might be the one called Utilities tools). Enable them both, then you should get the point at center option.

Chris

jeff hammond

@chris fullmer said:

You have to first enable the sketchup ruby script examples from Window > Preferences > Extensions > Ruyb Script Examples (or might be the one called Utilities tools). Enable them both, then you should get the point at center option.

Chris

ha!
i never knew this function came with SU.. i've been using jim f's arc_centerpoint.rb for a couple of years now.

Jim

Hehe, and I wrote that before I realized Point at Center came with SketchUp!

kostas_designer

@unknownuser said:

@chris fullmer said:

You have to first enable the sketchup ruby script examples from Window > Preferences > Extensions > Ruyb Script Examples (or might be the one called Utilities tools). Enable them both, then you should get the point at center option.

Chris

ha!
i never knew this function came with SU.. i've been using jim f's arc_centerpoint.rb for a couple of years now.

Me too, seems that the ways of SU are infinite!

Thanks for the tip, Chris.

boofredlay

I just wanted to thank you again for this Chris. It is a very useful tool.

Chris Fullmer

Oh good, glad its helpful!

Chris

baz

Great tool, thanks Chris.
baz

watkins

Dear Chris,

I made a request a little time ago for an icon to go with this script. I use your centrepoint finder so often that an icon would be very useful (and yes, TIG, I know I could assign a shortcut...)

Many thanks,

Bob

jamalito

hello Chris thank for this Plugin but after I updated my SU8 to SU8m2 it was not work when I run in form plugin menu show to me this window I don't know what is meaning ?
note I removed it and instal it again but same problem