A Survey of Cloth Simulation Techniques Presented by Mave T. Houston for Comp 290 - Computational Geometry Fall 1998.

A Survey of Cloth Simulation Techniques

Presented by Mave T. Houston

for

Comp 290 - Computational GeometryFall 1998

Presentation Outline

• Introduction

• Textile v. Computer Graphics Industry

• Various Approaches to Cloth Simulation

• Collision Detection

• Conclusion

• Future Work

Introduction

• Aesthetic Considerations

• Interested Parties

• Complexities of Cloth Simulation

Interested Parties

• Computer graphics community concerns– Appearance– Speed

• Textile/Apparel community concerns– Appearance– Behavior– Speed

Approaches

• Geometric

• Physical

• Hybrid

• Advantages/Disadvantages of above Approaches

Geometric

• Weil (1986) - Curve fitting, subdivision, relaxation

• Agui (1990) - Polygonization, relaxation

• Hinds (1990-92) - 3D interaction, interpolation

• Ng (1995) - Mapping

Physical

• Feyman (1986) - Energy minimization, Multigrid method

• Ng (1995) - extension of Feyman’s work• Thalmann (1991-95) - Deformable model,

Newtonian dynamics• Breen (1992-94) - Energy minimization,

Elasticity theory• Baraff/Witkin (1998) - Implicit Integration

Thalmann Contribution

• Tailor approach to cloth visualization

• Focus on managing interaction between the garment and the body

Thalmann cont’d.

Breen’s Contribution

• Cloth as a mechanical mechanism

• Draping simulations• Woven cloth• Kawabata Evolution

System

Baroff & Witkin

• Large time steps

• Increased speed

• Implicit integration method

Hybrid

• Rudomin (1990) - Convex Hull, Deformable model

• Kunii (1990) - Energy minimization, singularity theory, curve fitting

• Taillefer (1990) - Curve fitting, relaxation

• Tsopelas (1991) - Thin wall deformation, elastica, NURBS fitting

• Dhande (1993) - Swept surface generation

Collision Detection

• Self Collision

• Interference detection

• Frame to frame Coherence

• Collision detection with Planes

Collision Considerations

• A surface self-colliding

• A surface and a sphere colliding

Conclusion

• Non-general Approaches

• Methods Constrained by Specifics of Cloth

• Satisfying Textile/Apparel and Computer Graphics Community

• Degrees of Accuracy

• Macroscopic v. Microscopic Cloth Behavior

Future Work

• Speed

• Aesthetics

• Unified Model to simulate cloth in all situations

References• David E. Breen. Computer graphics in textiles and apparel modeling. IEEE Computer

Graphics and Applications, 16(5):26-27, September, 1996.

• David E. Breen, Donald H. House, and Philip H. Getto. A particle-based model for simulating the draping behavior of woven cloth. In Computer Graphics Proceedings, Annual Conference Series, 1994, pages 365-372, New York, August 1994. ACM SIGGRAPH.

• Michael Carignan, Ying Yang, Nadia Magnenat Thalmann, and Daniel Thalmann. Dressing animated synthetic actors with complex deformable clothes. In Computer Graphics Proceedings, Annual Conference Series, 1992, pages 92-104, New York, July 1992. ACM SIGGRAPH.

• Hing N. Ng and Richard L. Grimsdale. Computer graphics techniques for modeling cloth. IEEE Computer Graphics and Applications, 16(5):28-41, September 1996.

• Merlin Hughes, Christopher DiMattia, Ming C. Lin, Dinesh Manocha. Efficient and Accurate Interference Detection for Polynomial Deformation. UNC - Chapel Hill Department of Computer Science.

• David Baraff, Andrew Witkin. Large Steps in Cloth Simulation. In Computer Graphics Proceedings, Annual Conference Series, 1998, pages 43-54 New York, July 1992. ACM SIGGRAPH.