solidcraft-upstream/tests/robustness/goldens.json

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 "about": "What each robustness seed builds (crates/engine/src/tests/robustness_goldens.rs, docs/robustness.md). Record changes with ROBUSTNESS_GOLDENS_BLESS=\"why\".",
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 "notes": [
  {"reason":"First record: what each seed builds on main at 1a0100cd","seeds":[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95]},
  {"reason":"seed 0 meshes differently since display tessellation plans (#805), which landed alongside these goldens (#826)","seeds":[0]},
  {"reason":"the kernel fixes merged together on 13 October (#838, #839, #841, #855, #856) change what these seeds build: several joins that used to fail now succeed, small volume and area shifts, and shell now refuses seeds 6, 14, 43 and 73 with an offset corner error (seed 14 built before: #897)","seeds":[2,6,14,22,36,43,50,63,71,73,94]},
  {"reason":"#936: a fillet or chamfer of a smooth seam is refused as an invalid pick (no corner to round) instead of as unsupported","seeds":[72]},
  {"reason":"the model's body mesh is the reference mesher's again (the display plan's since #805, which moved these seeds rather than the kernel fixes above): they build as they did before #805, and seed 14 builds again (#897)","seeds":[0,2,14,36,43,71,94]},
  {"reason":"a fillet that used to be refused as unsupported on seed 64's extruded profile now builds, so the design goes on differently: rounds that meet at corners on curved faces (#851)","seeds":[64]},
  {"reason":"#936: fillets and chamfers of smooth seams are refused as invalid picks (rejected) instead of unsupported; nothing else changes","seeds":[10,15,20,21,37,41,50,53,68,81,84,91]},
  {"reason":"#946: small tools in large bodies are traced at their own scale; seeds 26 and 85 now build, 18, 43, 61, 63 and 71 fail with a different message, 19 builds two fewer faces (its fillet pick is also refused as in #936)","seeds":[18,19,26,43,61,63,71,85]},
  {"reason":"#921 with its grid lines kept to display and export meshes (Booleans mesh as before #921): measured volume and area move by about 1e-6 (seed 94 also as in #936)","seeds":[22,78,94]},
  {"reason":"a hole placed on a face without a direction drills into that face (it took the direction from any face whose plane passed through the point, the last one found, such as a side of a patterned box standing on the point's plane): the holes on these seeds now go straight in (#950)","seeds":[7,21,85]},
  {"reason":"the last-resort tool nudge is tried the other way when it fails or leaves sliver faces the operands didn't have: seed 43's join builds and the design runs to the end, 31 and 78 come out with fewer faces (#827, #897)","seeds":[31,43,78]},
  {"reason":"main's fillet changes since the last record (#926, #949) move seeds 33 and 91: a fillet step builds differently or is picked differently","seeds":[33,91]},
  {"reason":"hole tangent inside a stepped boss: touching sews split zero-thickness curved walls, so a pattern of holes spaced by their diameter (touching) in a stepped body cuts exactly instead of by a tool nudge: 42 builds more faces (the walls split where the holes touch), 51 picks other edges afterwards","seeds":[42,51]},
  {"reason":"corner blends on curved faces (#854): seed 33's last fillet (its second body) is built differently; its display-plan and measured volumes now agree (4442.73 mm³; on main they read 4439.42 and 4443.51)","seeds":[33]},
  {"reason":"#952: a hole placed on a face drills into the material; seed 81's hole moves its volume by 0.1 mm³ (area by 0.04 mm²)","seeds":[81]},
  {"reason":"Cuts join the straight edges they used to leave split along untouched walls (#1049). Replaying each changed seed's new commands on the build before and after gives the same volume, area and faces at every step, and the same refusals (seeds 2 and 95 end on a cut the old build refuses too), except: seed 94's final join was 1.7 mm³ too large before (the box adds 875 − 2.5 × 97.967 = 630.08 mm³ to 5270.48; now 5900.56, before 5902.27), and seed 71's hole differs only in the coarse measuring mesh (identical at 2e-4 mm). Every other volume change is the generator picking other edges by index for fillets and chamfers, some of which are now accepted; seed 71's join now builds.","seeds":[2,4,7,12,13,17,25,31,38,42,45,51,52,56,65,67,69,71,72,74,82,93,94,95]},
  {"reason":"#1164: a pattern copy of a box sitting flush on the half-ring's top face (a 27 mm2 contact patch) now joins the ring instead of staying a separate shell, so the later random steps pick different edges and positions","seeds":[13]},
  {"reason":"#1213: a round or chamfer on an edge chain that runs on across a curved seam now builds (it was refused with 'a curved seam where the edge chain turns'). Seed 41's second fillet (three edges, radius 1) was one of those refusals and is now built. Replaying the seed's commands on the build before and after gives the same volume, area, faces and edges after each of steps 1 to 6; step 7, the fillet, is refused before and builds after (5292.19 to 5289.17 mm³, area 7395.26 to 7381.22 mm²); the run then reaches its eight steps one step sooner, so its last step is a cut sphere (5185.22 mm³) where it was a join cylinder (the generator draws its later steps from the new state).","seeds":[41]}
 ]
}