I mocked this up in potatoshop using one of Jimmy’s voronoi tests. This was just to get a feeling of how the voronoi mesh might look with other landscape features added – the worlds will end up having much larger radii than this.
Jimmy’s been doing some amazing work with Voronoi mesh generation:
Here are some experiments using voro++. The code generates a 3D voroni diagram, then marks a subset of the Voronoi cells as solid. Imagine voxels, but instead of using a tiled space (eg. Minecraft) we use arbitrarily shaped 3D cells.