Expanding Sphere with attractor points

Replies to This Discussion

Permalink Reply by lucas cañada on January 4, 2013 at 4:21pm

Hello Tim. You will need kangaroo to open the deff. Hope it helps. This is an example file from the plugin (ballcluster) ;)

Attachments:

• ExpandingSpheres_1.gh, 14 KB

Permalink Reply by Tim Clare on January 5, 2013 at 1:55am

Hey Lucas. Thanks for the reply! I cant seem to get it working. I have reset the Bolean and timer in kangeroo, there are no errors anywhere and nothing happens. Not even a starting geometry I must be doing something wrong.

A quick image of what it does please?

Many thanks Tim

Permalink Reply by lucas cañada on January 5, 2013 at 5:37am

Im sorry i cant adjust the size of my images...

Permalink Reply by Tim Clare on January 5, 2013 at 6:02am

No worries. I just downloaded the script again and its working. Looks cool. Now to combine it with the mornings experiments.

I have been playing around with Arthur Manu's inflation script this morning. Got a sphere to expand, if your interested i'll attach the script. Cannot get more than one to work thou. frustrating! 

I think it the weaverbird component that preforms the inflation pressure doesn't like multiple mesh inputs. If you have some time please have a look :D Its a fun script!

Thanks so much

Attachments:

• Expanding Spheres 2.gh, 17 KB

Permalink Reply by lucas cañada on January 7, 2013 at 1:36pm

You are welcome!! sorry for delay... I manage to work two spheres, see attached.

The problem is, after explode, the path mapper is not doing what we need ;)

Attachments:

• ExpandingSpheres3.gh, 19 KB

Permalink Reply by lucas cañada on January 7, 2013 at 4:23pm

One way to do it. Look a the file attached ;)

Attachments:

• ExpandingSpheres4.gh, 28 KB

Permalink Reply by Tim Clare on January 9, 2013 at 2:27am

Thanks again Lucas. Any time you can spare is invaluable to me. 

Had a bit of trouble loading it at first. It doesnot work on rhino 4.0 old grasshopper for some reason. So i have joined the world of rhino 5.0 and upgraded my grasshopper. All working great now!

My understanding of how data travels through grasshopper is not so good, yet. Would you mind explaining expandingspehres4 as hopefully i will be able to redevelop the script a little further.

Permalink Reply by lucas cañada on January 9, 2013 at 4:41pm

Hello Tim! The script aplies an unary force (0,0,-30) to every point on the sphere, creates conections between every edge in each sphere and aplies a presure force, here was the problem because after explode curves the data is (0;0;0;0)....(0;2;0;383) and here Arthur Mamou used Path mapper or flip matrix but no one of this solutions is posible in this case because: path mapper extracts (A;B;C;D) and we have items on  (A;B;C;D), and flip matrix doesnt work... I have create a subset of list N=4 to get a list with the points of the spheres and flip the matrix to get four branches in order to get the points to input in the pressure force. Sorry but i´m not a teacher and there is, for sure, a better way to do it. Cheers. ; )

Permalink Reply by Tim Clare on January 10, 2013 at 9:44am

hey Lucas. Your definitely a teacher i am learning loads about grasshopper!! Many thanks for all your time. 

I thought I had understood how to adapt the matrix to suit all solutions but something has gone wrong. I have tried to add in the pop random to create spheres and adapt the matrix accordingly but something funny is happening. Hopefully you will have some time to have a look. Or anyone else?

MANY THANKS Tim

Attachments:

• ExpandingSpheres5.gh, 28 KB

Permalink Reply by lucas cañada on January 10, 2013 at 2:15pm

Hey Tim! What´s happening is that when you are using loop subdivision with 2 iterations on each face the data seams to be the same in all the process, except the number of force objects (of course) but then happens this curious behaviour. Use 1 instead 2 and it works... When you´r stranger...;)