Interactive Deformation Using Modal Analysis with Constraints
Abstract
Modal analysis provides a powerful tool for efficiently simulating the behavior of deformable objects. This paper shows how manipulation, collision, and other constraints may be implemented easily within a modal framework. Results are presented for several example simulations. These results demonstrate that for many applications the errors introduced by linearization are acceptable, and that the resulting simulations are fast and stable even for complex objects and stiff materials.
Supplemental Material
Paper video on YouTube
YouTube
ps2.mpg
Video
dodoall.mpg
A rubber dodo medley!
Video
dodostack.mpg
Three rubber dodos fall from the sky.
Video
dodoball.mpg
A rubber dodo is blasted in the stomach by a hurtling bouncy ball.
Video
batbrain.mpg
A brain is smashed to left field by a (invisible) batter.
Video
ballcollide.mpg
Two balls bounce and collide.
Video
sheetbounce.mpg
Four balls bounce on a sheet.
Video
sheetroll.mpg
A ball rolls across a sheet.
Video
pendulum.mpg
A stretchy pendulum made of elastic spheres knocks a gelatinous cube.
Video
bunny.mpg
A rubbery Stanford bunny hops along.
VideoSource Code
The source code for this project (modified for public release) is available here. Note that there are a few bugs as well as a mysterious speed loss from our internally used program. The reasons for this are not yet found, but we will be sure to try our best to fix these problems as soon as possible. Version 0.5, May 18 2003.
Source CodeCitation
Kris K. Hauser, Chen Shen, and James F. O'Brien. "Interactive Deformation Using Modal Analysis with Constraints". In Graphics Interface, pages 247–256. CIPS, Canadian Human-Computer Commnication Society, June 2003.