Method and apparatus for interactively painting volumetric particle flow paths and controlling a flow of the flow paths

摘要

A system that allows a user to interactively paint volumetric particles using a brush stroke. The particles are emitted from an area around the stroke path as the stroke is being made. As each stroke input event occurs, the system emits new particles from the new stroke segment and adds a segment to the particles that have already been emitted. This allows the user to interact with the particles as they are being “grown” and change a direction of a stroke thereby affecting the final image. As the particles are growing they can be affected by forces and displacements which change the position of the volumetric particle segments. The user can set or designate the stroke itself as a force which allows the user to control the flow of the generated particles.