Circle packing is almost always an iterative problem. Unless if you want to get a crystalline packing, in which case the position of each circle is governed by an equation.
Paul Bourke has an interesting application on his site regarding circle collisions: http://local.wasp.uwa.edu.au/~pbourke/miscellaneous/fluid/index.html (It's got source code as well, but only in Windows C, so it's pretty hard to read.) Packing is almost never a straightforward succession of commands, so it will be difficult to accomplish in Grasshopper. If I had to do this today, I'd use either RhinoScript or the Rhino SDK to make a tool for this. -- David Rutten Robert McNeel & Associates On Oct 23, 8:02 pm, sabrina <[EMAIL PROTECTED]> wrote: > i'm a student and just started working in rhino and grasshopper this > semester to explore circle packing as well. (so there is a lot out > there i don't know). but I did something similar where I offset the > circles I wanted to pack and then set the points of intersection of > the offset circles as the centerpoints for the next circle I wanted to > pack whose radii is equal to the offset amount. (I think it would be > much easier with a tangent-tangent-radius circle in grasshopper...but > this still wouldn't solve the problem of more than 2 tangencies. The > solution i've come up with is on a very small scale, and when i > increase the number of circles whose radii vary, then i'm struggling > maintaning points of tangency beyond 4 circles (they start to overlap > at somepoints...and i don't know how to prevent this). And then i > wanted to explore this pheonomenon 3 dimensionally as well. Is there > any suggestions on sphere packing...I don't know how to generate the > 3d close-packing lattices (hexagonal and cubic)...much less looking at > randomized close packing of spheres with changing radii (what i've > been working on with circles). thanks! > sabrina > On Oct 20, 3:21 am, David Rutten <[EMAIL PROTECTED]> wrote: > > > Hi Leaf, > > > then yes, you need to measure the radius (or the circumference, > > whatever fits best into your maths) of the large circle, then use that > > value to control the number and radii of the small circles. I'm not > > quite sure which equation is simplest, but it sounds like you already > > have one. > > > -- > > David Rutten > > Robert McNeel & Associates > > > On Oct 17, 10:12 pm, tealeaf <[EMAIL PROTECTED]> wrote: > > > > I use a big circle and make smaller circle inside using the bigger > > > circle's tangent points by dividing the circle curve. > > > > On Oct 16, 4:06 am, David Rutten <[EMAIL PROTECTED]> wrote: > > > > > How do you pack them? > > > > > -- > > > > David Rutten > > > > Robert McNeel & Associates > > > > > On Oct 15, 9:29 pm, tube <[EMAIL PROTECTED]> wrote: > > > > > > what is a good way to make packed circles adjust proportionaly when > > > > > the either the packed cirlces or outer cirlce have thier radii > > > > > changed. > > > > > > -Thanks- Hide quoted text - > > > - Show quoted text -
