Efficient modeling and rendering of turbulent water over natural terrain

  • Authors:
  • Nathan Holmberg;Burkhard C. Wünsche

  • Affiliations:
  • University of Auckland, Auckland, New Zealand;University of Auckland, Auckland, New Zealand

  • Venue:
  • Proceedings of the 2nd international conference on Computer graphics and interactive techniques in Australasia and South East Asia
  • Year:
  • 2004

Quantified Score

Hi-index 0.00

Visualization

Abstract

Water phenomena are some of the most visually spectacular effects found in nature. This paper presents an efficient hybrid method to model turbulent water such as fast flowing rivers and waterfalls with the intent that the model can be used as part of a larger environment or scene. The model presented uses hydrostatic theory to incorporate a 2D height field and a particle system to model respectively the main volume and spray of turbulent water. The user is able to submit any environment formed from spheres and panels making the solution very flexible and adaptable.A smooth representation of the water surface is obtained by fitting a uniform B-Spline surface to the height field. Foam, spray and other turbulent effects are represented by particles which are rendered as spheres or billboards. Our results show that the model provides a nearly realistic simulation of turbulent water and for simple scenes nearly interactive speeds are possible which compares favorably with alternative techniques. For non-interactive applications ray tracing can be used to obtain higher quality results.