January 31, 2008
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 29, 2008
January 25, 2008
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).
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...
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
I'll keep updating this list when I find anything new.
Paper:
Thomas Jakobsen
Advanced Character Physics
Forum:
Angular constraints
Maya plugin:
Nima
August 06, 2006
Some simple water simulation
http://homepage1.nifty.com/kaneko/water3.htm
http://www.codecolony.de/opengl.htm
Here are some water simulation demos and source code.
Should be easy to implement.
http://www.codecolony.de/opengl.htm
Here are some water simulation demos and source code.
Should be easy to implement.
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