A. Stomakhin, A.Selle. Fluxed Animated Boundary Method. ACM SIGGRAPH 2017.
We present a novel approach to guiding physically
based particle simulations using boundary
conditions. Unlike commonly used ad hoc particle
techniques for adding and removing the material
from a simulation, our approach is principled by
utilizing the concept of volumetric flux. Artists
are provided with a simple yet powerful primitive
called a fluxed animated boundary (FAB), allowing
them to specify a control shape and a material
flow field. The system takes care of enforcing the
corresponding boundary conditions and necessary
particle reseeding. We show how FABs can be used
artistically or physically. Finally, we
demonstrate production examples that show the
efficacy of our method.