Particle-based cloth simulation using verlet integration with fixed and stiff-spring constraints supporting collision detection and reaction with projectiles in sports video games

摘要

Techniques for simulating the behavior of nets in a real time three dimensional simulation are provided. In a simulated environment, a net is constructed from plurality of particles, and the particles may be laid out in a grid-like pattern. Verlet Integration is used to provide the net with cloth-like behavior in response to collisions. Adjacent particles may be constrained by fixed or stiff-spring constraints, and these constraints are used to determine the behavior of the particles in the event that one or both of the constrained particles are displaced by a collision of an object with the net. Post-integration processing is also performed to prevent ball-through-net phenomena where a ball or other object appears to pass through the net rather than merely colliding with and bounding off of the net.