1An Overview of Physically Based ModelingAn Overview of Physically Based ModelingReferencesReferencesWe started with some detailed notes on integration and on setting up and simulating particle systems. These notes can be found in the third reference below. The other references may also be of interest! Many of the movies later in these slides can be found online, if you would like to see them again. (Search for the web pages of the authors.)• W. T. Reeves, Particle Systems - a Technique for Modeling a Class of Fuzzy Objects, ACM Transactions on Graphics, 2(2), pp. 91-108, 1983.– http://portal.acm.org/citation.cfm?id=357320&dl=ACM&coll=portal&CFID=12858257&CFTOKEN=79986367• Karl Sims, Particle animation and rendering using data parallel computation, ACM SIGGRAPH Computer Graphics, v.24 n.4, p.405-413, Aug. 1990 – http://portal.acm.org/citation.cfm?id=97923&dl=ACM&coll=portal&CFID=12858257&CFTOKEN=79986367• A. Witkin, D. Baraff, M. Kass: Physically-Based Modeling, SIGGRAPH tutorial course notes. 2001– http://www.pixar.com/companyinfo/research/pbm2001/• Partial slide credit: Thomas Funkhouser2More Particle SystemsMore Particle Systems• With some adjustments to the particle and spring-mass systems we have see so far, we can handle– large numbers of rigid bodies– cloth– hair and furHandling Lots of CollisionsHandling Lots of Collisions• B. Mirtich, Time-warp technique (SIGGRAPH 2000)3Guendelman, E., Bridson, R. and Fedkiw, R.,"Nonconvex Rigid Bodies with Stacking",SIGGRAPH 2003, ACM TOG 22, 871-878 (2003). Guendelman, Bridson, and Fedkiw (Stanford), SIGGRAPH 2003Guendelman, E., Bridson, R. and Fedkiw, R.,"Nonconvex Rigid Bodies with Stacking",SIGGRAPH 2003, ACM TOG 22, 871-878 (2003). James and Pai, SIGGRAPH 2004Handling Lots of CollisionsHandling Lots of Collisions4ClothClothBridson, Fedkiw, and Anderson, SIGGRAPH 2002Baraff and Witkin,SIGGRAPH 1998ClothClothChoi and Ko, SIGGRAPH 2002stable and responsivecloth….…with buckling5ClothClothClothing with wrinklesBridson, Marino, and Fedkiw (Stanford), SCA 2003Dealing with self-intersectionBaraff, Witkin, and Kass (Pixar), SIGGRAPH 2003Estimating Cloth Parameters from VideoEstimating Cloth Parameters from VideoKiran S. Bhat, Christopher D. Twigg, Jessica K. Hodgins, Pradeep K. Khosla, Zoran Popovic and Steven M. Seitz. SIGGRAPH 2003.6Hair, Fur and other StrandsHair, Fur and other StrandsHair, Fur and other StrandsHair, Fur and other StrandsChang, Jin, and Yu, SCA 20027Beyond Particle SystemsBeyond Particle Systems• Many natural phenomena are based on approximations of the Navier-Stokes equations characterizing fluid flow– water– smoke– steam– fire– explosions!Smoothed ParticlesSmoothed ParticlesStam & Fiume, Turbulent Wind Fields for Gaseous Phenomena, 19938FluidsFluidsMark Carlson, Peter J. Mucha and Greg Turk. SIGGRAPH 2004interaction with rigid bodiesdirectablesmokeRaanan Fattal and DaniLischinski. SIGGRAPH 2004directablefluidAntoine McNamara, AdrienTreuille, Zoran Popovi, JosStam. SIGGRAPH 2004goopGoktekin, Bargteil, O'Brien. SIGGRAPH 2004ExplosionsExplosionsExplosionsFeldman, O’Brien, and Arikan (Berkeley), SIGGRAPH 20039Finite Element ModelsFinite Element Models• Fracture• DeformationFractureFracture10Multiresolution SimulationMultiresolution SimulationDebunne, Desbrun, Cani, and Barr, SIGGRAPH 2001 Multiresolution SimulationMultiresolution SimulationCapell et al., SCA 200211Multimodal Aspects: SoundMultimodal Aspects: Soundvan den Doel, Kry, and Pai, SIGGRAPH 2001Appearance from VideoAppearance from VideoKiran S. Bhat, Steven Seitz, Jessica Hodgins and Pradeep Khosla. SIGGRAPH
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