Random points within a circle or sphere

I am new to Grasshopper and have a simple question:

How do I plot random points within a unit circle or sphere?

I already downloaded a script that can plot random points within a cube or square, but don't know how to apply the technique to circles.

Thanks!

Replies to This Discussion

Permalink Reply by David Lister on September 30, 2013 at 12:37am

The PopGeo component.

Permalink Reply by David Rutten on September 30, 2013 at 3:21am

You have to create a surface (or mesh) from your circle, then use the [Populate Geometry] geometry component.

David Rutten

david@mcneel.com

Tirol, Austria

Permalink Reply by posfan12 on September 30, 2013 at 6:54am

I just tried that and encountered two issues:

1. the PopGeo component only populates the perimeter of the circle, not the inside.

2. (if it does not already do so by default) I would like the population to occur based on the parametric function for a circle. I.e. the points should be denser toward the middle.

Thanks again!

Permalink Reply by Hyungsoo Kim on March 22, 2016 at 10:46am

Hi.

This could be one way. Try this out. Best.

Attachments:

PopPt_in_Circle.gh, 14 KB

Permalink Reply by Manuel Montoro on March 24, 2016 at 9:36am

Hello Mira!

I can see your rectangles´radius grow from the center of the circle, so I assume their radius follows the same function as the random point generator.

Only thing that comes to my mind is trying to use the "cull duplicated points" with a tolerance according to the radius you have used.

Anyway, there are some threads which I think will be usefull to you:

http://www.grasshopper3d.com/forum/topics/removing-overlapping-lines

Regards,

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