Grasshopper

algorithmic modeling for Rhino

staggered grid points + image sampler

Really simple question that I'm having a hard time answering! Here goes:

I am trying to make a staggered grid to imput into the image sampler but the only thing that seems to be working is using a square grid/rectangular/triangular grid non of which give me staggered points. Ive tried just making a grid of point myself in rhino then inputting them into the image sampler but the sample doesnt seem to work any longer. by this i mean the circles no longer change in diamiter.

 

heres a link to how i want the points to be like

http://www.wire-mesh.biz/images/products/perforated_metal_3.jpg

 

here is how the points are now

http://www.istockphoto.com/file_thumbview_approve/7122811/2/istockp...

 

any help with this would be amazing!

thanks

Views: 3420

Replies to This Discussion

Permalink Reply by Dedackelzucht on July 14, 2011 at 2:05am

hey,

how about this one?

 

Best Regards

 

DeDackel

Attachments:
Permalink Reply by Danny Boyes on July 14, 2011 at 2:39am

Don't know if its a tolerance thing but the Kangaroo DupPts Component isn't behaving.

And an alternative using shift and cull.

 

Permalink Reply by Dedackelzucht on July 14, 2011 at 2:46am

mh?

 

I did not check the dupPtcomponent (it worked until now). But anyway, your solutions seems to be clear and easy to understand.

 

Best Regards

 

DeDackel

Permalink Reply by Daniel Piker on July 14, 2011 at 3:26am

Yes, it's a tolerance thing - works fine if it is set to 0.0001 instead of zero.

Those points are not exactly identical so not being detected as duplicates.

I guess I should set the default tolerance for the DuplicatePts component to some small but non-zero default value to avoid this sort of thing.

Permalink Reply by alma jauregui on July 14, 2011 at 3:49pm

worked great thank you 

 

Danny I was looking for a 60 degree angle staggered grid  so Dedackelzucht definition worked with Daniels fix. 

Good job guys

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