Truncated octahedron

Hi!

I am getting plenty of errors in this definition:

unknown variable encountered: rxd (on the rotAx)

data conversion failed from text to integer (on Item)

https://explodebreps.wordpress.com/grasshopper-definitions/truncate...

Anyone who can help? Or can propose a different method to construct a Truncated octahedron.

Thanks.

Attachments:

Screen Shot 2017-03-24 at 11.10.10.png, 123 KB
Screen Shot 2017-03-24 at 11.10.21.png, 359 KB
Screen Shot 2017-03-24 at 11.10.23.png, 351 KB

Replies to This Discussion

Permalink Reply by David Rutten on March 24, 2017 at 4:31am

I wonder if your download application modified the XML in some way. The expression imported fine here.

You can fix it by replacing the expression with 'rad(x)' (where you get the unknown variable error). Also the panel contains an empty string, which will fail to convert to integer. You can just remove that empty line.

Permalink Reply by Leonoor Leus on March 24, 2017 at 4:45am

Thank you for the quick response!

Yes, I had managed to find the empty line.

Not sure I understand the rad(x) expression...

Currently it looks rather warped.

Do you have any other info on how to write this kind of shape?

Thank a lot.

Attachments:

Screen Shot 2017-03-24 at 11.42.37.png, 160 KB

Permalink Reply by Anders Holden Deleuran on March 24, 2017 at 5:04am

There are also other examples of how to model a truncated octahedron on the forum, that might offer a faster/easier solution than attempting to fix your current definition. Also, there's a Rhino plugin for modelling a whole host of Polyhedra that might be an option.

Permalink Reply by Leonoor Leus on March 24, 2017 at 5:25am

I was looking for that but I can't seem to find a clear enough example.

Unfortunately the plug-in doesn't work on Mac.

Thank you anyways!

Permalink Reply by Anders Holden Deleuran on March 24, 2017 at 5:47am

Ah I see. If the Mac version allows you to use Grasshopper plugins, you could use the "Platonic Octahedron" component that comes with the LunchBox plugin. It has an truncation input:

Edit: On the other hand, it might actually be more fun and useful to construct it from scratch, in the long run of things..

Permalink Reply by Leonoor Leus on March 24, 2017 at 6:21am

Yeah. No Lunchbox for Mac.

I have very little knowledge in Rhino. But I will give it a try...

Any tutorials/things you can recommend?

Thanks.

Permalink Reply by Anders Holden Deleuran on March 24, 2017 at 7:03am

The Learn menu above is a great starting point. I particularly would recommend the ModeLab primer.

Permalink Reply by Leonoor Leus on March 24, 2017 at 9:18am

Any chance you could give it a look?

I can't figure out how to fill the square shapes.

In a second stage, I would need to group all shapes into one geometry and apply moves like in my first example...

Thanks!

Attachments:

Poly flat.gh, 23 KB

Permalink Reply by Laurent DELRIEU on March 24, 2017 at 12:27pm

It didn't worked on your definition because there are sometimes 2 same brep ... but worked on the first link you gave. Your definition has many other problems.

Permalink Reply by Leonoor Leus on March 27, 2017 at 4:26am

Hmmm that doesn't work on my version of the first definition.

Permalink Reply by Laurent DELRIEU on March 27, 2017 at 5:17am

As I said your definition has some duplicate faces so explore each component to search the duplicate or cull the duplicate. You can do it with cull duplicate points, points are center of faces (area component)

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