Fill a surface with circles using an attractor in the center

[etia.1 (etia)]

hi,
I was wondering if there is any way to fill a flat surface with circles that touch each other (not overlaps) of fixed radius.
I was thinking using circle packing studies and an attractor like this:

Circle packing in grasshopper (of fixed radius)

Simulating an attractor point in the center of the surface, and slowly filling it while the surface is not filled fully.

I try to download it, but it is using an old kangaroo and I can’t find it.

Thanks

[maje90 (Riccardo Majewski)]

Old kangaroo is here: https://www.food4rhino.com/app/kangaroo-physics
Pick the 0.099 version, down in the list.

[DanielPiker]

Here are various circle packing examples using the current Kangaroo:

In particular the first two there - CirclePackOnSurface, and CircleFill_Dome_tangentboundary
The discussion where that second one was first posted is here:

Circle packing with fixed radius and fixed number of circle for each radius

Forgot to mention - When making this I noticed a small error causing an instability in the collisions component, so the definition above includes a scripted fix for this. When you first open it, you’ll be prompted to set the location of the referenced file and will need to tell it where your copy of KangarooSolver.dll is. [circsizes]

[cricri]

Thanks, where I should specify the location of the KangarooSolver?. Because when I open it, it does not ask me where to place the location.

[DanielPiker]

Right click the SphereCurveCollide component and select ManageAssemblies
If you are using Rhino 5, the KangarooSolver dll will probably be somewhere like:
C:\Users\YourName\AppData\Roaming\Grasshopper\Libraries
but if you are using Rhino 6, it will be something like:
C:\Program Files\Rhino 6\Plug-ins\Grasshopper\Components