Efficient Simulation of Inextensible Cloth

How to read this

Category

Method: inextensible cloth simulation

Contributions

• A Constrained Lagrangian Mechanics formulation that enforces low strain along warp and weft instead of integrating stiff spring forces.
• A fast projection method that acts as a velocity filter, dropping easily into existing solvers alongside bending, damping, and collision passes.
• Demonstrated asymptotic speed advantage over strain-limiting and stiff-spring methods as permissible strain vanishes and resolution increases.

Context

Addresses cloth inextensibility within an existing simulation stack, relating to robust cloth-collision pipelines such as Bridson et al.'s work by integrating as an additional filtering pass.Builds on: Robust Treatment of Collisions, Contact and Friction for a Skinned Cloth Simulation

Correctness

Shown on chains and draped cloth with an asymptotic efficiency argument; the inextensibility target fits textiles that barely stretch, so the benefit is clearest for low-strain materials and high resolutions rather than deliberately stretchy fabrics.

Clarity

Accessible to a simulation reader; a first pass conveys the velocity-filter idea and where it plugs in, a second pass for the constrained-mechanics and fast-projection derivation.

How to read it

First pass for the constraint-versus-stiff-spring framing and the drop-in filter design; second pass on the fast projection math if you are implementing or comparing strain-limiting approaches.