My colleague Alex made this awasome tool to generate previews by using graphs only loading the info from the particles stored in the hard disk. It means we don’t need to load any particle in the RealFlow viewport and also that we can generate the preview by using the command line in local or network. This graph is based on the normal of particles so we can add shadows for our previews!!! Take a look.
Point Projector Normal tool part1
Point Projector Normal tool part2
Waterfall test rendered from RealFlow with the Point Projection Tool
The graph can be downloaded from RealFlow resources .
Enjoy RealFlow 2013!