Electrostatic Repulsion - Tutorial/Advice

[Pranay Mowji]

I am currently enrolled in a Grasshopper course at school, and we have
been assigned to investigate different plug-ins for Rhino. My partner
and I are investigating Kangaroo. We are interested in a video we saw
online, http://vimeo.com/13850936, and were wondering if anyone could
help us start.

We understand that the nodes have some sort of repulsion forces that
force them to start combined and then spread along the surface.
Looking at the Kangaroo button on Grasshopper, we understand that the
nodes will either have to be constrained to the surface, or stuck to
the surface. Then the repulsion force can force them away from each
other. It also seems that at some point, the nodes must connect with
each other, and form a sort of equal distribution across the surface.

Any help on starting this assignment would be appreciated, as would
any related tutorial or example files that anyone may have.

Thanks again

-Pranay

[Erick Katzenstein]

I'm pretty new with kangaroo, but I assume the video you posted is a
more complex version of this video: http://vimeo.com/10248733

I think you are almost there with what you've described...those points
probably repel from a unary force while constrained to the surface
generated in rhino.

As far as the truss-like connection, I would guess that the set of
points are plugged into delauney edges (grasshopper battery) and then
those curves are piped (with a sphere around each point).

Hope this helps.

-Erick

On Nov 22, 4:09 pm, Pranay Mowji <pmo...@gmail.com> wrote:
> I am currently enrolled in a Grasshopper course at school, and we have
> been assigned to investigate different plug-ins for Rhino. My partner
> and I are investigating Kangaroo. We are interested in a video we saw

> online,http://vimeo.com/13850936, and were wondering if anyone could

[Erick Katzenstein]

k, I set something up. Download here: http://erick-katzenstein.com/delauney.html

Remember to connect the timer to the kangaroo engine.

Erick

On Nov 28, 11:53 pm, Erick Katzenstein <erick.katzenst...@gmail.com>
wrote:

[lyonster]

Erick,

i'm using an earlier version of grasshopper what was the input into
your line component?
On Nov 29, 12:53 am, Erick Katzenstein <erick.katzenst...@gmail.com>
wrote:

> > > -Pranay- Hide quoted text -
>
> - Show quoted text -

[Erick Katzenstein]

I posted the image at the same url. The line component is just a way
to project points onto a surface.

You'll have to play around with the definition to get even
distribution.

[lyonster]

did you use a grid of lines or one point?

On Nov 29, 2:24 pm, Erick Katzenstein <erick.katzenst...@gmail.com>

> > > - Show quoted text -- Hide quoted text -

[lyonster]

Erick,

So as I undertand what you've set up:

There is a spring coefficient that basically distributes points across
a given surface.
It's not quite the electrostatic repulsion that Daniel is showing.

yeah?

On Nov 29, 2:24 pm, Erick Katzenstein <erick.katzenst...@gmail.com>

> > > - Show quoted text -- Hide quoted text -

[Erick Katzenstein]

Right, sorry if I was unclear. I'm working backwards from the
video...and it seems the points were connected by delaunay edges, so
that's what I set up.