"reverse" attractor effect

been investigating several attractor deff, but am trying to do the reverse effect of what they all do. that is, have the density around the point and decays with distance.

basically the reverse effect as this : http://designreform.net/2008/06/rhino-patterning-based-on-point-dis...

any ideas on how to accomplish this?

Tags: attractor, reverse

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Permalink Reply by Stu on February 8, 2010 at 12:13pm: so this is where i'm at :http://www.grasshopper3d.com/photo/album/show?id=2985220%3AAlbum%3A...

kinda able to keep highlight the area where the pt is located, then decay as the circles get farther from the pt.

seeing if anyone has any alt ideas for making this work w/ a crv AND/OR w/ less fall off decay.

thanks!; ▶ Reply to This

Permalink Reply by Mikhail Orlov on March 24, 2010 at 1:03pm: can u please share a part of the code where you invert it?; ▶ Reply to This

Permalink Reply by Evan Chakroff on February 8, 2010 at 2:42pm: looks like you got it. for a curve just use 'closest pt on curve' to control falloff try a graph mapper.; ▶ Reply to This

Permalink Reply by Stu on February 8, 2010 at 3:36pm

awesome! got the curve to work now.

but not sure where the graph mapper gets plugged in.

Attachments:

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Permalink Reply by Evan Chakroff on February 9, 2010 at 7:26am

the graph mapper lets you control the falloff. give it a list of numbers between 0 & 1 and it will output numbers between 0 & 1, remapped based on the graph. it's a handy tool.

take a look at the attached def. also, note how I use domain components to get the max/min distance values.

Attachments:

graphmap_example.ghx, 110 KB

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Permalink Reply by Stu on February 9, 2010 at 1:45pm: dude, you rock! cheers for the help!; ▶ Reply to This

Permalink Reply by Evan Chakroff on February 10, 2010 at 1:51am: no problem. i just figured this out myself, happy to pass it on.; ▶ Reply to This