Quantum mechanics

Computer science

Physics

Optics

Tracing

Ray tracing (physics)

Programming language

Volume (thermodynamics)

This paper presents new algorithms to trace objects represented by densities within a volume grid, e.g. clouds, fog, flames, dust, particle systems. We develop the light scattering equations, discuss previous methods of solution, and present a new approximate solution to the full three-dimensional radiative scattering problem suitable for use in computer graphics. Additionally we review dynamical models for clouds used to make an animated movie.

Ray tracing volume densities