nx_rigbench_lib_t21.nx

nx_rigbench_lib.nx -- LIB: THE REAL-CHARACTER REFEREE FOR THE AUTO-RIG (dcc DC16 rung M2): score the sovereign auto-rig against an ARTIST rig on the same mesh, in the artist's own units, with the artist's own pose. Three legs, each a number no story can replace: A. SKELETON -- the bare mesh (VERT+TRIS only) goes through nx_curveskel; every artist joint's distance to the nearest joint of ours is measured, and an artist joint counts as COVERED when one of ours lies within the artist rig's OWN mean bone length (derived from that rig, never picked). The reverse names our SPURIOUS joints (farther than a bone length from every artist joint). Our limb count is reported beside the artist's leaf count. B. WEIGHTS -- the artist SKELETON is held fixed and nx_boneheat re-weights the mesh (bh_run REPLACES the SKIN section in place and keeps every other section); per-vertex L1 between our four influences and the artist's, as a permil of the NXA weight scale, plus the fraction of vertices whose strongest joint agrees. C. DEFORMATION, the referee-grade number -- the artist's own POSE is played by the SERVED nx_nxa_play twice, once with the artist's weights and once with ours, and md_measure (the estate's one mesh ruler) judges the two posed skins against each other: max and p95 surface deviation. When the rig carries no POSE this leg ABSTAINS (exit 3) rather than acquits; A and B still print. UNITS: NXA 0.01 mm; md_measure reports 0.1 mm for a mesh fed in millimetres (measured 2026-09-06); the report says which. Usage: nx_rigbench <rigged.nxa> <workdir> [pose_id] [cells] Exits: 0 ok | 2 usage | 3 abstain | 4 refuse license_tier: ORIGINAL expect_exit: 0