Nvidia Corporation

Matthias Heinz Muller-Fischer

Nuttapong Chentanez

Tae-Yong Kim

Bruno Heidelberger

Markus H Gross

Matthias Teschner

A simulation engine performs a mass-conserving Eulerian fluid simulation by manipulating the distribution of density between nodes associated with the fluid simulation. The simulation engine traces a velocity field upstream to identify the source of mass that currently resides at a given node. The simulation engine then adjusts (i) the density contributions to that source from adjacent nodes and (ii) the density contributions provided by that source to the given node. In doing so, the simulation engine maintains conservation of mass at a local level between nodes within a given neighborhood. As a result, mass is conserved at a global level. One advantage of the disclosed technique is that a fluid interface associated with the fluid simulation may appear physically realistic, because numerical errors typically caused by violations of conservation of mass may be eliminated.

Mass conserving eulerian fluid simulation

A method and system of representing and simulating an object by representing using with velocity-dependent particles.

Method and system for representing objects with velocity-dependent particles

A simulation engine is configured to generate a physical simulation of a chain of particles by implementing a physics-based algorithm. The simulation engine is configured to generate a predicted position for each particle and to then adjust the predicted position of each particle based on a set of constraints associated with the physics-based algorithm. The simulation engine may then generate a predicted velocity for a given particle based on the adjusted, predicted position of that particle and based on the adjusted, predicted position of an adjacent particle.

Technique for simulating the dynamics of hair

A method is provided for depicting on a display, an object within a simulated environment having clothing. In this method, the clothing is represented as a series of vertices that include vertices that are attached to the object and vertices that are not attached to the object. The method improves upon position based dynamics algorithm by constraining unattached vertices to be a predefined distance away from attached vertices that are connected thereto to compensate for overstretching in the simulated clothing.

Method of simulating clothing using long range attachments

A method of executing a physics simulation is performed in a system comprising a computational platform, a main application stored in the computational platform, a secondary application stored in the computational platform, and a cloth application programming interface (API) implemented in the computational platform. The method defines a cloth simulation call in the cloth API, and by operation of the main application, invokes a software routine using the cloth simulation call. Additionally, by operation of the secondary application, a state of the physics simulation is updated in response to the software routine.

Cloth application programmer interface

A method of stimulating a deformable object comprises modeling deformable elasticity for the object by defining an actual shape and a goal shape and pulling points in the goal shape towards corresponding points in the goal shape.

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Mannedorf, Switzerland

Matthias Heinz Muller-Fischer