I sometimes have problems too. I wrote them off to not restarting (Mac) often enough, because that often helps. Jim

Hi to All Thanks Jeffe, Thanks Simon Really some Rubies are well-hidden. A multi-entries glossary of all plugins is a necessity to avoid such idiot questions. I am not a database specialist but I think it's feasable. Of course I will be fired (By who knows) for saying that. Thanks ThomThom for your generosity.

Hi All, Hi Fredo I don't have the pretention to modele a ship. I only exercise on spline curves. In fact I exercise on curves because I would "design/dessiner" (for the fun) eyeglasses. In the beginning I underestimated the task and it appears to be a big one. No books related to that and no one talk about it: a secret or so. I imagine that specialize softwares exists but are not offer for sale. Eyeglasses are spline curves by excellence. Thanks for your answer. [image: ax6N_Frame-ClassicBezier.jpg]

@larsen said: Please, is this api diagram correct? NO (you should remove it.) Thanks for taking it down Larsen There are links to the available diagrams: SketchUp Ruby API - Class Diagram http://code.google.com/apis/sketchup/docs/diagram.html Sketchup Ruby API Class Diagrams by Jim Foltz http://sketchuptips.blogspot.com/2008/08/sketchup-ruby-api-class-diagrams.html

TIG's "volumecalculator21" is invaluable!

Veeeery thanks to all.

Thanks, the link you provided is straightforward.

http://www.youtube.com/watch?v=nElUfcaZpy8&feature=related Thankx for your kindness.

Perhaps what makes problem is the word "snippet".

"may not be very practical" that what all woodworkers have said to me. I'll retouch it for sure. Thanks.