Equal spacing of points on a sphere

Hello,

I am trying to distribute 270 points on a sphere with as regular a spacing between each as possible.

I am trying to get a more regular spacing than a geodesic will give, but am not an expert with Kangaroo, is there an easy way of doing this using forces??

Any help would be much appreciated, thanks.

Attachments:

POINTS.jpg, 27 KB

Replies to This Discussion

Permalink Reply by Daniel Piker on August 4, 2014 at 10:04am

Here's a simple way to do it.

It attaches all points to a central anchor point with a spring of length r, where r is the radius of the sphere (Alternatively you can use PullToMesh here, which would allow you to distribute points on surfaces other than spheres, but with springs is slightly faster).

Then it uses SphereCollide to push all particles away from each other when they get closer than a certain distance. It uses the Proximity3d component to get an estimate for a good starting distance here.

To run the simulation just double click on the Kangaroo component to bring up the remote control.

Attachments:

point_distribution_on_sphere.gh, 13 KB

Permalink Reply by Helmut Bell on August 4, 2014 at 12:29pm

Hello Daniel, thanks for this!

Very much appreciated, works perfectly.

-HB

Permalink Reply by 2DCube on June 14, 2016 at 11:02am

Hi Daniel,

I can't get the points to align and remain equidistant. I've plugged in some of my own sliders to drive the sphere diameter and also to drive the smaller sphere diameters in order to stop them falling below the surface of the overall sphere... Is there a way to constrain the centre of the smaller spheres to remain on the surface of the larger overall sphere?

I'm basically trying to divide the sphere by a set number of points so that I can create a number of poles/rods perpendicular to the surface, spaced equidistantly.

Kind of going round and round in circles with my lack of Grasshopper knowledge, trying to learn on the job which I find is the best way!

Thanks for any help in advance.

Permalink Reply by J on March 3, 2017 at 1:06pm

Can we get an updated script for this routine for Kangaroo 2.0 or above?

I can't get this gh to run says "unrecognized objects"

Thanks!

Permalink Reply by Mohamed Naeim on March 4, 2017 at 12:31am

Try this one

Attachments:

point_distribution_on_sphere.gh, 1.2 MB

Permalink Reply by Marco Vitali on February 25, 2016 at 2:55am

Sorry I'm newbie with grasshopper and i found this post because i've to put some small spheres on a great one... Using the .gh file found here i'm not able to allocate the points on the main sphere with an equal distance. The image is the result that i obtain...with a random distribution. My ignorance don't let me understand where is the mistake. Maybe i should have to start from easier projects....

Permalink Reply by Bob Mackay on June 14, 2016 at 5:07pm

I'm coming late to this thread, but if you go to https://en.wikipedia.org/wiki/Goldberg_polyhedron and search for 270 you will find a couple of solids that have 270 edges. Putting a point at the middle of each edge would perhaps suit your purpose?

270 does not divide exactly by 12 or 20, so you are going to have trouble getting a solid with 270 vertexes!

Bob

Permalink Reply by 2DCube on June 14, 2016 at 5:10pm

I installed kangaroo 1 and the .gh Daniel put together works really well. It's not prefect but it's pretty damn close :)

Permalink Reply by Rossignol on March 12, 2017 at 9:33am

Hello,
I'm a little late on the thread also, I hope this discussion is the right on to post this question.
I'm trying to map a surface with points and have them at an equal distance with kangaroo, so far no problem.
Yet I'd like to insert anchor points that will not move but will be considered in the repartition.
How can I proceed?

On this example you can see the points equaly reparted with my three anchor points...