I’m afraid building a new gcode creator is beyond my current abilities or inclination to pursue.
I found a web site that describes using PNG bitmaps with CandyFab. They actually start with an STL file and convert it to a POV-Ray file, then produce a stack of PNG bitmaps representing the voxels to be printed.
I also found an article from 2012 at engineering.com claiming that voxel-based printing was the way of the future. Apparently there were a few printers available at the time that worked this way.
A more recent article at 3dprintingindustry.com concerns a project at Arizona State University to do voxel printing with plastic and metal.
I’d love to be able to print this object, which is produced using the POV-Ray “spheresweep” object. However, I’m not sure I’m up to the task of building my own 3d printer, and the ready-to-use devices I’ve found seem to depend on downloading or learning to create STL files. The search continues…