fit extremes

Every garment and hairstyle, on the bodies at the sliders' corners. A character is judged on its worst screenshot, and the worst ones are at the extremes: the heaviest, most muscular, tallest, oldest bodies, the ancestry corners, the local shapes pushed all the way. This sweep morphs each of those bodies, fits everything that can be worn as the character builder fits it, and measures:

• penetration: garment and hair vertices inside the body, raw (inside the bare skin) and VISIBLE (deeper than the builder tucks the skin there, so skin would show through the cloth);
• bone sanity: the skeleton humanRig fits each body, against the default body's (scale after height, left against right, chain order, joints inside the skin);
• and draws a contact sheet of the worst cases, headless (a software rasteriser into a PNG).

It runs with no engine and no DOM:

bun run extremes                 # the full sweep: 133 bodies, about half an hour
bun run extremes --quick         # the default body and 32 macro corners
bun run extremes --only casual   # only the garments whose names match
bun run extremes --sheet         # also draw the contact sheet

It reads MakeHuman's pack and Quaternius' hair library from ../static-assets when that is checked out (else from the CDN), and writes reviews/extremes/extremes.md (each item's verdict: holds, fails at the extremes, or broken at the default), extremes.json and the sheet.

The same parts are a library (tosijs-3d/fit-extremes): sweepCorners lists the bodies, runSweep({ pack, corners, proxies, hair }) measures them, summarise and renderMarkdown report, contactSheet draws. penetration and checkBones work on any body, with mesh-sdf as the inside test.

The bodies (sweepCorners, 133): the default; every corner of the six macros that blend as corners (gender, age from 25 to 90, muscle, weight, height, proportions: 64), because they interact and only the full product finds the bad combinations; each pure ancestry on eight gender, weight and muscle corners (24); and each local shape (bust size and firmness, waist, chest depth, pecs) at each end on four bases, plus the four with all of them out at once (44). Children are not swept.