AutoModeller imitator for Maya
There should be a tool for Maya similar to the AutoModeller Pro plugin for 3ds Max but with some differences. http://www.automodeller.com/
1. Use of 2d patterns like a voronoi pattern
2. Use of maps like density maps
3. Use of boundary regions
4. Use of flows.
5. Parameters for generated meshes.
Here are other references. https://www.youtube.com/watch?v=RcOfhcVSoJg Watch at 19:18 https://www.youtube.com/watch?v=FCqtlS9FnBQ