January 30, 2008

Claytronics Mentioned on Engadget

This Claytronics demo was a Carnegie Mellon / Entertainment Technology Center project that I was a member of. We produced a video to explore what could be done with this technology.




From Engadget.com:

Research is still in the early stages, but the concept renders are straight out of science fiction. Some friendly folks at Carnegie Mellon University are working towards electromagnetic microscopic bots that cling together and can assume virtually any shape...

more...

January 25, 2008

Claytronics Car Design

Claytronics demo made for Intel Lab:

Graffiti on Facebook





I always want to draw something in spare time. And now I found that Facebook is the perfect place. Its Graffiti application enable me to draw on any computer. Even the functionality is very primitive, but that's all I need to do some simple sketching.

Re-open

Updated to new blogger system...

August 18, 2006

Fast square root tricks:

2D:
If dy > dx, approximated distance is
0.41 dx + 0.941246 dy
(If dy < dx, swap these values.) The difference from the exact distance is between -6% and +3%; more than 85% of all possible differences are between −3% to +3%.

3D:
in decreasing length dx, dy, dz
0.9398 dx + 0.3893 dy + 0.2987 dz
This has a max error of 6.0%, quite accurate, and can
be computed quickly with only shifts and adds (no
multiplies).

August 15, 2006

Portable Applications

aka green softwares...
here is a web site collect and host some green applications
most of them are well maintained:

PortableApps.com


enjoy it...

August 14, 2006

Ragdoll physics

Here are some resources about ragdoll physics:
I'll keep updating this list when I find anything new.

Paper:
Thomas Jakobsen
Advanced Character Physics

Forum:
Angular constraints

Maya plugin:
Nima