Author Archives: christopherbatty

We present a discrete treatment of adapted framed curves, parallel transport, and holonomy, thus establishing the language for a discrete geometric model of thin flexible rods with arbitrary cross section and undeformed configuration. Our approach differs from existing simulation techniques … Continue reading →

We introduce a method for efficiently animating a wide range of deformable materials. We combine a high resolution surface mesh with a tetrahedral finite element simulator that makes use of frequent re-meshing. This combination allows for fast and detailed simulations … Continue reading →

We present a new discretization for the physics-based animation of developable surfaces. Constrained to not deform at all in-plane but free to bend out-of-plane, these are an excellent approximation for many materials, including most cloth, paper, and stiffer materials. Unfortunately … Continue reading →

Recently, many techniques using computational fluid dynamics have been proposed for the simulation of natural phenomena such as smoke and fire. Traditionally, a single grid is used for computing the motion of fluids. When an object interacts with a fluid, … Continue reading →

From Erwin Coumans: Bullet 2.68 adds rope, cloth, deformable volumes interacting with rigid bodies, and officlal iPhone SDK support. See http://bulletphysics.com for more info, download precompiled Windows and Mac OSX demos and iPhone video.

The slides for Erwin Coumans’ Game Developers Conference Physics Tutorial on parallel SPU physics are available for download and on-line here: http://www.bulletphysics.com/Bullet/wordpress/uncategorized/gdc-2008-physics-tutorial-on-parallel-game-physics-for-spu They cover parallelizing a typical collision detection and rigid body dynamics pipeline and provide links for further reading. … Continue reading →

Phun is an educational, entertaining and somewhat addictive piece of software for designing and exploring 2D multi-physics simulations in a cartoony fashion. Phun

 We perform a detailed flop and bandwidth analysis of Jos Stam’s Stable Fluids algorithm on the CPU, GPU, and Cell. In all three cases, we find that the algorithm is bandwidth bound, with the cores sitting idle up to 96% … Continue reading →

We present a new approach to accelerate collision detection for deformable models. Our formulation applies to all triangulated models and significantly reduces the number of elementary tests between features of the mesh, i.e., vertices, edges and faces. We introduce the … Continue reading →

The 2008 Symposium on Computer Animation will be in Dublin, Ireland from July 7-9, with paper deadline April 18. SCA 2008 Eurographics 2008 is in Crete, Greece April 14-18. Eurographics 2008 And of course SIGGRAPH 2008 is once again in … Continue reading →