1. Real-Time Artistically Inspired Cloud Simulation and Rendering Noah Brickman David Olsen Gillian Smith

2. Problem Hard to render Important scene element Artistic control

3. Solution Specify cloud shapes Artistically inspired Physically based Realtime rendering

4. Related Work Simple Non-Interactive Solutions Imposters, Skybox Pros: –Fast rendering –Simple solution Cons: –Not interactive –Limited control

5. Related Work Artistic Control Pros: –Artistic manipulation Cons: –Not physically based animation –Non-interactive

6. Related Work Cellular Automata Pros: –Physically based simulation –Simplistic simulation system –Interactive Cons: –Limited control

7. Method Overview Specify 3D model Voxelize Cellular automata Rendering

8. Voxelization

10. Cellular Automata Rules –Growth –Extinction Bounded voxel grid

11. Rendering Point cloud Billboards Variable size Variable shading Evolving cloud structure

12. Results

13. Conclusions Direct artist control Cloudify 3D models Physically based simulation within bounding volumes