Dynamic cloud simulation using cellular automata and texture splatting

  • Authors:
  • Eric M. Upchurch;Sudhanshu K. Semwal

  • Affiliations:
  • Cobham Analytic Solutions;University of Colorado at Colorado Springs

  • Venue:
  • Proceedings of the 2010 Summer Computer Simulation Conference
  • Year:
  • 2010

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Abstract

Visually convincing simulation of natural environments and natural phenomena has been a goal of computer graphics for decades, and has broad applications in both modeling environments and entertainment venues. Natural phenomena have a wide scope, ranging from water surfaces, fire, smoke, and clouds, to individual flora and forests of trees. Clouds in particular represent a challenge for modelers, since their formation, extinction, and movement are amorphous and dynamic in nature. This paper outlines a computationally inexpensive, real-time method for the simulation of clouds using cellular automata. The base model, as put forth by Dobashi et al. [1] is extended to incorporate cloud textures sampled from actual images of cloud systems. The simulation model is also extended with an enhanced wind model for more organic cloud movement. Furthermore, a graphical user interface for manipulating simulation and cloud model rendering parameter values is provided, so that users may interactively control the simulation and its rendered results.