Wom! sac3′s digital plastic
Thx Google. I find it. 
Sanghoon Yoon is a designer in Seoul. He has been kind enough to share many script and expertise on his blog sac3′s digital plastic.
You may be interested in  some of the topic.
* GrasshooperÂ
* RhinoScript
*Â HyperShot
* Other
Grasshopper version 0.5 available
Grasshopper 0.5.0050 is now available for download from:
http://download.rhino3d.com/download_rel.asp?rel=400
This is quite a major new release (it’s been 3 months after all) which undoubtedly has many fresh bugs.
Patterning with 2 attractive Points
Url:Design Reform
===Description===
Software : Rhinoceros & Grasshopper (Explicit History)
Basically the idea is to drive the radius of the circles with the distance between the point(s). The circles then use the MIN component and a range factor to limit how big the circles can get as well as the area of influence of each point.