Alexis Wajsbrot is a technical film director specializing in the simulation of movement of fluids and textiles.
Sound sexy so far?
Well, here’s some of the projects Alexis has worked on:
- Harry Potter and the Half-blood Prince
- Harry Potter and the Order of Phoenix
- Tim Burton’s Sweeney Todd, The Demon Barber of Fleet Street
- Prince of Persia
- GI Joe: The Rise of Cobra
- Your Highness
- Red Balloon
Here’s a Vimeo link to some of Alexis’ film effects.
Alexis approximates a moving fluid or textile by a large number of particles in a 3-dimensional co-ordinate system.
The software he uses allows him to choose how the particles move in space – controlling their speed and acceleration.
Another way Alexis simulates a fluid is to dissect the region of the fluid into a 3-dimensional grid of voxels (from volume & pixel). He then uses the mathematics of fluid dynamics to calculate the velocity in each voxel at each time step, to create a realistic fluid motion.
More details of Alexis’ work and Quicktime movies of his simulations can be found at +plus magazine, from which this information was taken.
Finally, here’s Alexis describing some of his work on Red Balloon (en Francais):