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A Non-consecutive Cloth Draping Simulation Algorithm using Conjugate Harmonic Functions  

Kang Moon Koo (서울대학교 전기컴퓨터공학부)
Publication Information
Journal of KIISE:Software and Applications / v.32, no.3, 2005 , pp. 181-191 More about this Journal
Abstract
This article describes a simplified mathematical model and the relevant numerical algorithm to simulate the draped cloth on virtual human body. The proposed algorithm incorporates an elliptical, or non-consecutive, method to simulate the cloth wrinkles on moving bodies without resorting to the result of the past time-steps of drape simulation. A global-local analysis technique was employed to decompose the drape of cloths into the global deformation and the local wrinkles that will be superposed linearly The global deformation is determined directly by the rotation and the translation of body parts to generate a wrinkle-free yet globally deformed shape of cloth. The local wrinkles are calculated by solving simple elliptical equations based on the orthogonality between conjugate harmonic functions representing the wrinkle amplitude and the direction of wrinkles. The proposed method requires no interpolative time frames even for discontinuous body postures. Standing away from the incremental approach of time integration in conventional methods, the proposed method yields a remarkable reduction of CPU time and an enhanced stability. Also, the transient motion of cloth could be achieved by interpolating between the deformations corresponding to each static posture.
Keywords
cloth draping simulation; global-local analysis; non-consecutive analysis; conjugate; harmonic functions;
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