Bounding box not displaying 'u' input

Hi, I'm new to grasshopper and I was trying to use the bounding box tool and input something into input 'u' because on all the demonstrations the left hand side of the box has 'C' U' P' but mine is missing the 'u' input. COuld some please tell me how I can fix this or if I'm using the wrong setting or tool?

Thanks heaps!

Replies to This Discussion

Permalink Reply by Kory on March 18, 2013 at 10:48am

Well my teacher and I have been trying to figure this problem out for some time now and so he told me to post definition in hopes of coming up with a solution... We are trying to create a 3d voronoi skeleton but obviously unable to come up with the defintion. I have followed a definition from online and still unable to figure it out! please help!!!

Attachments:

help.png, 788 KB

Permalink Reply by David Rutten on March 18, 2013 at 12:50pm

Please post the actual definition (*.gh file) so I don't have to spend a half hour recreating it from an image.

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by David Rutten on March 18, 2013 at 12:53pm

Also, why do you need both a union box and a per-object boundingbox? Since it's Voronoi3D, you already know what the union box is as that is one of the inputs.

I think you need to delete 3 of those BBox components, only keep one that is set to 'Per Object' and plug that into the Volume component.

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by Kory on March 18, 2013 at 1:37pm

My apologizes, I completely forgot that sending you the grasshopper file that you would be able to open it. I have attached the grasshopper definition and tried your advise.

Attachments:

vornoni skeleton.gh, 16 KB

Permalink Reply by Brig George on February 8, 2017 at 10:07pm

I am wondering if you all were able to resolve this problem? Four years later and I am trying to do the exact same definition and am having the exact same problem.

I have tried your solution of setting the BBox to 'Per Object' and plugging it into the volume (I have attached a screen shot of this). The error says 'Data conversion failed from boolean to geometry.'

I've also attached a copy of definition that I am trying to follow.

In sum, the issue I am trying to resolve is how to workaround there not being a U input in the BBBox

Thanks

Attachments:

IMG_0103.JPG, 132 KB
IMG_0104.JPG, 574 KB

Permalink Reply by David Rutten on February 14, 2017 at 2:20am

You've plugged the boolean output of the Voronoi component into the Geometry input of the boundingbox component. You need to provide the [C] output instead.

Booleans are just true/false values that have no location or shape. In this case they are used to specify for each voronoi cell whether it is on the boundary or the interior of the diagram.