Cloth

Report by LIANG Cheng

Stitch Meshes for Modeling Knitted Clothing with Yarn-Level Detail(SIG12)

Cem Yuksely1,2 Jonathan M. Kaldorz1,3 Doug L. James1 Steve Marschner1

1Cornell University 2University of Utah 3Facebook

Two steps

interactive modeling offline relaxation

Stitch Mesh

Traditional work:Yarn loop

This paper:Stich polygon wal

e ed

gecourse edge

course edge

wal

e ed

ge

Different Types

Common types

Special types

Details

Borders Mismatched Wale Direction

Cables

Interactive Modeling

• Labeling the Input Mesh Model– labeled as either a wale edge or a course edge– User select borders as rows and they will be connected as wale edges

• Generating the Stitch Mesh– Tessellation according to the wale edges and the course edges

• Editing the Stitch Pattern– Edit the topology and attributes of the stitch mesh such as cables

Offline-Relaxation

stitch mesh model

mesh-based relaxation

yarn curves

yarn-level relaxation

Mesh-based Relaxation

• Use three types of spring forces– stretch– shear– a wale strut

Yarn-level Relaxation

• An anisotropic, biphasic force• Detection of Yarn Pull-through– Limit the max movement– Lod technic– Compute the safe bounds

Inspiration

• Use “CG” structure present the physical object• Combine physical and geometry function?

This paper builds the knitwear using stitch polygon instead of traditional yarn loops. The result is stunning but the method is too slow. It implies that we can try some computer graphics structure to simulate the complex objects.

33 hours…