It works by accepting a Grasshopper mesh and writing it to disk as an OBJ file, then incorporates ZBrush settings for a given command into a text format ZScript file, also written to disk from Python based on Grasshopper inputs, then ZBrush is told to run the script via Windows command line, and the exported OBJ output is read back from disk back into a Rhino Grasshopper mesh, in about a hundred lines of code.ĭespite a change in mesh definition in Rhinocommon from version 5 to 6, I made it work on both versions. This is a general toolkit to expose myriad very advanced features of ZBrush into being just another Grasshopper plug-in like the rest. It keeps running though, for fast iterations with no program startup time. The ZBrush program itself pops up while it works, and is then automatically backgrounded to bring you back to Grasshopper. There is no complicated installation of anything since it's all done in Python. But with $800 ZBrush 4R8, the latest version, that I can create English language ZScripts for, I suddenly have, often in the blink of an eye, or at worst a few seconds, right back into Rhino Grasshopper, a perfectly joined, airtight and smoothed mesh blending of upwards of thousands of input mesh pieces that overlap in ways Rhino will never Boolean union. IntraLattice was a step in a good direction but it can't merge fattened lines that merely cross each other with no breaks or that physically overlap on purpose to have many curve on in to a hub. on Grasshopper) that tended to bog down or blow up. I needed a replacement for slow and especially non-robust marching cubes (Cocoon/Monolith/Dodo/Aether etc. However, it has the world's most powerful quad remeshing and now mesh Booleans too. ZBrush has a very high initial learning curve because of its non-standard interface. It takes some work to create a ZScript macro for custom routines, but you can record those in ZBrush and then merely need to edit them into my script, inline, as bulk multiple-lines you just paste in, no problem as long as you strip the ZBrush button definition at the beginning.
Work in progress, but I wrote a little Python script that can command the astoundingly powerful mesh modeler ZBrush to operate on meshes from within Grasshopper.
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