CNC articulated triangles with hinges

HI everybody,

I work on a GH able to work on the CNC fabrication of hinge articulated triangulated surfaces.

- I have a nice tagging script optimised from for tools (thanks to Benjamin Golder)

- a customisable definition to drill hinge holes to articulate each triangles

- I use rhinonest to optimise the CNC files

Is someone have a solution to group triangles+holes+tags together in order to nest each elements together ?

I've tried with containment (holes+tags inside triangles) without success, here is the file.

Thanks

Attachments:

Replies to This Discussion

Permalink Reply by Chris Tietjen on January 31, 2013 at 8:44pm

Here's a screencast that shows you how to use the Rhinoscript below to achieve the grouping you want.

Attachments:

GroupingForHingeHoles.rvb, 1 KB

Permalink Reply by paulcoudamy on February 1, 2013 at 3:47am

Thnaks Chris it works great !

Is anybody knows how to us the script in GH ?

thanks

Paul

Permalink Reply by paulcoudamy on February 1, 2013 at 4:13am

Hi Chris,

after a test on my file I got this error message :

source : rhinoScript

Error : Type mismatch in parameter. String requiered.

Line : 50

Char : 3

any idea why ?

Thanks

Paul

Permalink Reply by Chris Tietjen on February 1, 2013 at 6:41am

I didn't put as much error trapping in the script as I might have but all of your curves need to be planar and on the XY world plane. Is the file you tested the script on different from the file you posted above? I need the file you're using to really debug any problems.

Chris

Permalink Reply by paulcoudamy on February 1, 2013 at 7:02am

Here is the final geometr.

I do not understand why it do not works on all curves shape, the csript would be really usefull if it works on different geometries..

thanks

Attachments:

group-contained2.3dm, 704 KB

Permalink Reply by Chris Tietjen on February 1, 2013 at 7:09am

I won't have time to look at it until later in the day.

As long as I know what those geometries are it might be possible to include them in the functionality. I'm always working from specific examples only.

Permalink Reply by Chris Tietjen on February 1, 2013 at 12:20pm

It turns out that you changed the font style from an outline curve to a stick font in your current file and this was causing a problem when the font element was a straight line as for example the vertical stroke in a 4. The script below can handle stick fonts. I also added a count down counter in the command line so you can see where you are in the parsing process. With 70 triangles each triangle is taking about 5 seconds to group. The script is inefficient in the sense that it doesn't eliminate already grouped elements from the next loop. Let me know if you still have problems. Again I haven't put in any error trapping to test for planarity of curves.

Attachments:

GroupingForHingeHoles.rvb, 2 KB

Permalink Reply by Chris Tietjen on February 1, 2013 at 12:49pm

The script below will automatically pick the objects by layer. As long as you have the layers set up with the correct objects on the corresponding named layers: "surfaces", "holes", "numbers", it should work correctly. I question somewhat the use of the word surfaces when in fact you're using curves but as long as you know what it's about you should be ok.

Attachments: