I knew it for old stuff by Danwills
Here its noncommercial version that support import of .VTI files Direct to Houdini
github.com/GollyGang/ready/tree/gh-pages/Scripts
Ready is a program for exploring continuous and discrete cellular automata, including reaction-diffusion systems, on grids and arbitrary meshes. OpenCL is used as the computation engine, to take advantage of the many-core architectures on graphics cards and modern CPUs. OpenCL also allows rules to be written in a text format and compiled on the fly. Ready supports a compact XML-based file format so that images and rules can be shared easily.
Ready supports 1D, 2D and 3D data, as well as polygonal and polyhedral meshes.
Endless Possibility now for patterns Yupiiii ..Have Fun