Posted by: Gary Ernest Davis on: May 6, 2012

Alexis

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.

AlexisÂ approximates a moving fluid or textile Â by a large number of particles Â in a 3-dimensional co-ordinate system.

The software he uses allows him Â to choose how the particles move in space – controlling their speed and acceleration.

Another way Alexis simulates a fluid is to dissect Â the region of the fluid into a 3-dimensional grid of Â voxels (from Â **vo**lume & pi**xel**). 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):

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