How to change a point grid's density with an attractor?

Hello all,

I am trying to use an attractor point to manipulate the density of a point grid. Basically, I want to generate more points when the point grid is close to an attractor point, and less, when the points are farther away.

So, in the attached image, instead of creating larger boxes around the attractor point, I want to create more points.

Eventually, this will have to work on a three dimensional point grid, but let's start in two dimensions.

Any insight or solutions come greatly appreciated. Thanks!

Replies to This Discussion

Permalink Reply by Michael Pryor on July 21, 2011 at 9:09am

I'm not sure how or if u can create "more" points with an attractor, but you can pull the points to the attractor making it more / less dense near the attractor. I think this is what you are looking for http://livecomponents-ny.com/2009/09/19/1-1-points-concentration-2/

Permalink Reply by David Rutten on July 21, 2011 at 10:15am

One approach is to generate a very dense cloud of points (basically, your highest desired density everywhere). Then you remove points from this cloud based on attractor distance plus a certain random component. I cannot give you a file as you won't be able to open ghx files written with the internal development version, but here's a screenshot of my test:

And for 3 different values of the slider, this gives:

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by Katerina K on September 11, 2013 at 12:03pm

brandon, did you find a solution to your problem concerning the smooth deletion of points? i digged up this ancient thread, as i seem to be having the same problem with you. any suggestions would be welcome!

Permalink Reply by Luke M on July 20, 2018 at 2:06am

Ive tried to re-create the script below but it didnt seem to work. Is there a way to create this?

my goal is to input a surface with a series of points to show people density in certain locations

Love some help.
Luke

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