Physically Based Animation and Rendering of Lightning

Authors:
Theodore Kim;Ming C. Lin
Affiliations:
University of North Carolina at Chapel Hill;University of North Carolina at Chapel Hill
Venue:
PG '04 Proceedings of the Computer Graphics and Applications, 12th Pacific Conference
Year:
2004

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Abstract

We present a physically-based method for animating and rendering lightning and other electric arcs. For the simulation, we present the dielectric breakdown model, an elegant formulation of electrical pattern formation. We then extend the model to animate a sustained, 'dancing' electrical arc, by using a simplified Helmholtz equation for propagating electromagnatic waves. For rendering, we use a convolution kernel to produce results competitive with Monte Carlo ray tracing. Lastly, we present user parameters for manipulation of the simulation patterns.