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fix(mesh): require exact pool coverage -- found by rendering, not by a metric

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Rendering assembled e106 from Stage_S02 showed the old slab: e106_bdy_03 spanning
600x1600x998 where three other containers give 276x236x941. Its anchor had slack
3, and the coverage gate tolerated up to three unreferenced tail vertices --
tolerance that was hiding a mis-anchor, since real blocks reach their last vertex
exactly (8580 of 8629). Requiring exact coverage moves it to the block the other
containers agree on and the slab disappears.

Costs 3 resources (6212 -> 6209), inconsistency 39 -> 38, capture oracle
unchanged at 46/46, suite green. Evidence: captures/e106-cover-slack-before-after.png

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
This commit is contained in:
Claude (auto-RE)
2026-08-12 06:56:49 +00:00
parent 9d33345560
commit f340815db6
4 changed files with 58 additions and 4 deletions
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14
crates/sylpheed-formats/examples/submesh_dump.rs
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@@ -11,13 +11,23 @@ fn main() {
println!("{} — {} sub-meshes decoded, {} markers declared", m.name, m.meshes.len(), markers.len());
for (i, s) in m.meshes.iter().enumerate() {
let max_idx = s.indices.iter().max().copied().unwrap_or(0) as usize;
let (mut lo, mut hi) = ([f32::MAX; 3], [f32::MIN; 3]);
for q in &s.positions {
for k in 0..3 {
lo[k] = lo[k].min(q[k]);
hi[k] = hi[k].max(q[k]);
}
}
println!(
" #{i:<2} at 0x{:<9x} verts {:<6} idx {:<6} max_idx {:<6} slack {}",
" #{i:<2} at 0x{:<9x} verts {:<6} idx {:<6} max_idx {:<6} slack {} span [{:.0} {:.0} {:.0}]",
s.vbuf_offset.unwrap_or(0),
s.positions.len(),
s.indices.len(),
max_idx,
s.positions.len() as i64 - 1 - max_idx as i64
s.positions.len() as i64 - 1 - max_idx as i64,
hi[0] - lo[0],
hi[1] - lo[1],
hi[2] - lo[2]
);
}
}