Status: May ’10

What a crazy month. Green lantern gig interrupted by family member injured in an accident, happily recovery going well and I should be back at it soon. Meanwhile Adobe releases an interesting video about Avatar featuring PLF’s Stephen Lawes who went straight from Avatar onto Iron Man 2 which had to have been exhausting. You see some glimpses of the studio and Stephen’s team, who have done some amazing work!

On location

Working on location at Green Lantern for a bit, and having fun with ICE as a happy by product. I’ve been putting together some interesting deformation compounds which I’ll eventually put online, but currently too busy to do much besides this quick note. Back to work!

I am really getting tired of the color green, BTW...

Diffusion limited aggregation redux

Over time people have been asking me to share the DLA compound I wrote waaay back. So here it is.


The compound can be found in the downloads section.

Diffusion limited aggregation is a natural phenomena in which particles in solution build up over time – as particles are deposited they limit the locations where subsequent particles can be deposited, resulting in a pseudo-random growth of deposits with characteristic nodules and ‘fjords’. You can see examples of DLA systems in nature all over, from veins of copper to urban growth patterns. In this simple ICE implementation particles are emitted from geometry and then pulled towards a “seed” point, namely the point cloud the compound is applied to. If there are no existing points in the cloud the first will be deposited at the origin. This causes DLA structures to build towards the provided surface and then to spread across it or inside it’s volume. The compound has a turbulence node which adds a random tropisim as well as a vector input for user-directed tropisims. Please be aware this was never intended as more than an experiment: it works fine but is a pretty simple implementation.

To use: apply the compound to a point cloud (typically with a single point) in a simulated ice tree… …

MSpro from XSI

Models in .obj format into XSI, then to MSpro for materials, lighting and a 5k render. The sculpture mesh is a full res scan, about as thick as a zbrush export with several hundred thousand polys.

Screen capture