Nvidia Corporation

Matthias Müller

Bruno Heidelberger

Nuttapong Chentanez

Miles Macklin

Marcus Hennix

Embodiments of the present invention provide a position-based dynamics approach for simulating objects using a set of points and constraints, applied as equations that restrict the relative motion of bodies. Forces are applied to the points to move them, and the constraints ensure that the points will not move in a way that is inconsistent with rules of the simulation. The present invention improves upon existing PBD approaches by using regularized constraints that directly correspond to well-defined energy potentials, and which can advantageously be solved independent of time step and iteration count.

Position-based dynamics simulation

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

Disclosed is a method of simulating a dynamic object comprising a plurality of vertices. The method comprises defining a current position and a current velocity for a vertex 'v' among the plurality of vertices, generating an estimated next position for vertex 'v' based on the current position and current velocity, updating the estimated next position based on a plurality of constraints, and after updating the estimated next position, computing a next position and a next velocity for vertex &#x201c;v&#x201d; based on the current position and estimated next position.

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Männedorf, Switzerland

Matthias Müller