Rendering Voids in a Molecular Dynamics Simulation

It's been a while since I've posted. I still need to make that post about X-ray scattering but in the mean time, I'd like to share a picture that I helped make. Katherine Sebeck wanted to render the voids in her epoxy simulation in smooth organic way. I generalized the way Kirke handles grids and my metaball code to handle density grids. The density grid for her epoxy simulation was generated from my smoothed meshing code in Kirke. I talk a bit more about it here. I'll show a movie if Katie says it's okay, but for now here is a large picture (~41 MiB):