Fluid Simulation and Control for Computer Graphics

Fluid Simulation and Control forComputer GraphicsMichael Bang NielsenAarhus UniversityWhat is Computer Graphics?• Modeling– Geometry– Appearance• Animation– Keyframes– Motion Capture– Simulation/Synthesis• Rendering– Offline– RealtimeWhat is Physically BasedAnimation?• Rigid bodies• Deformable objects• Cloth• Hair• Fluids– Water– Smoke– Fire– Air Important for games, but what about movies and commercials?Why Computer Generated Effectsfor Movies and Commercials?Real world smoke and water phenomena are very complexWhy Computer Generated Effectsfor Movies and Commercials?Ivan Aivazovsky, ”The Ninth Wave”, 1850.It requires remarkable talent and a lot of time to do..Why Computer Generated Effectsfor Movies and Commercials?From Rikitt: Special EffectsAnd real phenomena have scale…Why Computer Generated Effectsfor Movies and Commercials?From Rikitt: Special EffectsAnd real phenomena have scale…Why Computer Generated Effectsfor Movies and Commercials?Copyright Cinefex.But sometimes physical effects work.State of the Art in Fluid Simulation for Computer Graphics1: http://www.scanlinevfxla.com/la/en/reels.html2: Sequence from Golden CompassMolemaker et al.State of the Art in Fluid Simulation for Computer GraphicsSequence from Day After Tomorrow:Copyright Twentieth Century Fox.But don’t be fooled: Artists spenda lot of time making raw simulations look good