OneCAD-Simulation/docs/meshing/corpus.md

Meshing test corpus

Generated by cargo xtask corpus; do not edit. The parts are our own: SolidCraft recipes in tests/corpus/<name>/recipe.json and analytic shapes generated in code (crates/testkit/src/corpus.rs). Each run rebuilds every part, tessellates it at a chordal tolerance of 1e-3 of its bounding-box diagonal and runs every stage on it. Times are wall clock on the machine that ran it; every other column is deterministic.

Results

part	categories	bodies	faces	triangles	tol. mm	build ms	enclosed mm³	SolidCraft mm³	rel. diff	exact mm³	boundary	genus	feature edges	check ms	CDT tets	Steiner	cavities	tet gate	CDT ms	quality tets	min dihedral °	max dihedral °	min radius ratio	slivers CDT → mesh	quality gate	quality ms	hex	hex elements	hex8 min SJ	hex20 min SJ	hex ms	octree hexes	min SJ	mean SJ	hex vol. diff	octree ms
bent-tube	sweepable, thin-wall, genus	1	18	4296	0.121	458	4213.1	4159.4	1.3e-2	4159.8	ok, 2148 vertices	1	268	14.5	15300	2338	0	20 flat	600	25100	27.4	149.0	0.091	3208 → 0	pass	3687	sweep	192	0.859	0.997	65	no: Tube: meshing failed: octree hex meshing failed after 2 builds: the core's boundary has components of genus [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,				2565
bolted-assembly	assembly, blocky	3	22	284	0.117	57	33004.7	32999.0	1.7e-4	32998.9	ok, 144 vertices	0, 1, 1	104	0.7	687	181	0	pass	34	14750	33.0	143.2	0.236	189 → 0	pass	1270	extrude	377	0.446	0.446	2462	41344	0.323	0.961	2.0e-4	11596
cantilever-i-beam	sweepable, thin-wall	1	14	44	0.208	4	61600.0	61600.0	0.0e0	61600.0	ok, 24 vertices	0	36	0.2	90	24	0	pass	3	6357	29.9	149.4	0.070	70 → 0	pass	1373	extrude	480	0.308	0.308	55	351220	0.308	0.977	-9.1e-14	208396
cross-cylinders	boolean, sharp	1	10	1539	0.087	6789	32196.4	32357.4	-5.0e-3	32365.8	error: Cross: invalid boundary surface: 28 defects; triangles 142 and 254 are oriented inconsistently across edge 0–396 at (-15.488656021315903, 4.577998041166734, 7.853092194999726); triangles 251 and 254 are oriented inconsistently across edge 0–553 at (-18.75000000000002, 5.634596901641276, 7.632255089815496); edge 103–108 at (-0.16007784063084018, 0.03984236936862052, 9.998639270596865) is shared by 3 triangles; …				error: Cross: invalid boundary surface: 28 defects; triangles 142 and 254 are oriented inconsistently across edge 0–396 at (-15.488656021315903, 4.577998041166734, 7.853092194999726); triangles 251 and 254 are oriented inconsistently across edge 0–553 at (-18.75000000000002, 5.634596901641276, 7.632255089815496); edge 103–108 at (-0.16007784063084018, 0.03984236936862052, 9.998639270596865) is shared by 3 triangles; …					error: Cross: invalid boundary surface: 28 defects; triangles 142 and 254 are oriented inconsistently across edge 0–396 at (-15.488656021315903, 4.577998041166734, 7.853092194999726); triangles 251 and 254 are oriented inconsistently across edge 0–553 at (-18.75000000000002, 5.634596901641276, 7.632255089815496); edge 103–108 at (-0.16007784063084018, 0.03984236936862052, 9.998639270596865) is shared by 3 triangles; …							error: Cross: invalid boundary surface: 28 defects; triangles 142 and 254 are oriented inconsistently across edge 0–396 at (-15.488656021315903, 4.577998041166734, 7.853092194999726); triangles 251 and 254 are oriented inconsistently across edge 0–553 at (-18.75000000000002, 5.634596901641276, 7.632255089815496); edge 103–108 at (-0.16007784063084018, 0.03984236936862052, 9.998639270596865) is shared by 3 triangles; …					error: Cross: invalid boundary surface: 28 defects; triangles 142 and 254 are oriented inconsistently across edge 0–396 at (-15.488656021315903, 4.577998041166734, 7.853092194999726); triangles 251 and 254 are oriented inconsistently across edge 0–553 at (-18.75000000000002, 5.634596901641276, 7.632255089815496); edge 103–108 at (-0.16007784063084018, 0.03984236936862052, 9.998639270596865) is shared by 3 triangles; …
filleted-bracket	fillet, genus, sweepable	1	13	544	0.088	453	32162.3	32145.0	5.4e-4	32144.8	ok, 270 vertices	2	135	1.9	5576	1613	0	pass	206	15665	28.4	149.2	0.097	2158 → 0	pass	2757	no: Bracket: not supported yet: no structured hex method fits this body (extrude: cylindrical face 8 is not parallel to the direction; sweep: from face 1: linking face 6 has 2 boundary loops (periodic or holed linking faces are not swept); from face 6:				5	30676	0.305	0.963	8.3e-4	16975
filleted-bracket-blocks	fillet, genus, partitioned	30	190	712	0.088	2081	32169.8	32145.1	7.7e-4	32144.8	ok, 416 vertices	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0	474	3.9	1414	349	0	2 flat	93	176280	33.6	142.7	0.190	282 → 0	pass	15596	blocks (30 cells, 45 shared faces)	4986	0.705	0.705	836	149898	0.157	0.935	9.7e-4	44280
i-beam	sweepable, thin-wall	1	14	44	0.208	3	61600.0	61600.0	0.0e0	61600.0	ok, 24 vertices	0	36	0.1	91	24	0	1 flat	4	6154	26.4	153.6	0.053	71 → 0	pass	1514	extrude	480	0.308	0.308	59	351220	0.308	0.977	2.3e-13	116641
loft-transition	organic	1	6	292	0.075	60	56390.2	56450.6	-1.1e-3	–	ok, 148 vertices	0	40	0.8	1328	256	1	pass	37	9691	31.2	140.6	0.133	591 → 0	pass	1116	sweep	2873	0.189	0.189	339	67188	0.210	0.959	-1.2e-3	16530
perforated-plate	genus, thin-wall, sweepable	1	54	1644	0.144	236	26822.2	26764.6	2.2e-3	26764.2	ok, 776 vertices	24	828	5.2	33560	9798	0	1 flat	1293	44028	27.8	148.7	0.126	11707 → 0	pass	8434	extrude	768	0.496	0.496	224	185128	0.300	0.958	2.5e-3	72087
pinhole-block	small-feature, genus	1	38	4044	0.073	903	49919.4	49909.6	2.0e-4	49909.5	ok, 1992 vertices	16	1548	14.4	96203	30221	0	17 flat	6474	843460	14.0	166.0	0.000	65489 → 0	pass	124949	extrude	5236	0.408	0.392	1368	no: Block: limit reached: the grid has 675798 elements; the limit is 500000				2246
rounded-box	fillet	1	26	2540	0.054	157	23325.7	23340.5	-6.3e-4	23340.8	ok, 1272 vertices	0	216	7.2	11348	1906	0	18 flat	385	62949	24.8	160.2	0.001	8780 → 0	pass	24516	no: Box: not supported yet: no structured hex method fits this body (extrude: cylindrical face 7 is not parallel to the direction; sweep: from face 0: 12 faces are not on the sweep path; from face 5: 12 faces are not on the sweep path; revolve: plan				21	76430	0.561	0.985	-1.3e-3	39852
shallow-groove	near-tangent, boolean	1	8	62	0.075	41	47795.2	47782.3	2.7e-4	47781.5	ok, 33 vertices	0	24	0.2	266	87	0	pass	14	6318	37.8	136.6	0.297	85 → 0	pass	811	extrude	1960	0.991	0.986	295	2926	0.301	0.920	3.4e-4	1525
sharp-wedge	sharp, thin-wall, sweepable	1	5	8	0.083	10	3200.0	3200.0	0.0e0	3200.0	ok, 6 vertices	0	9	0.1	11	3	0	pass	1	1273	2.9	176.6	0.003	3 → 24	pass	544	extrude	1674	0.014	0.014	415	84952	0.003	0.980	-3.5e-2	35349
sphere-on-plate	near-tangent, boolean	1	12	2826	0.098	1306	69353.3	69509.0	-2.2e-3	69509.7	ok, 1415 vertices	0	124	7.9	4370	309	9	pass	298	11792	32.7	141.3	0.235	3001 → 0	pass	2893	no: Plate: not supported yet: no structured hex method fits this body (extrude: face 6 is curved across the direction; sweep: from face 0: 6 faces are not on the sweep path; from face 5: linking face 11 has 2 boundary loops (periodic or holed linking				17	25194	0.065	0.945	4.3e-2	31594
spline-vase	organic	1	11	3890	0.106	214	94891.2	94948.5	-6.0e-4	–	ok, 1947 vertices	0	243	10.3	11859	1512	0	72 flat	468	38225	29.1	150.8	0.033	7206 → 0	pass	15955	sweep	4536	0.665	0.665	555	43579	0.387	0.927	-1.5e-3	18037
stepped-block	blocky, sharp	1	14	52	0.078	556	47000.0	47000.0	0.0e0	47000.0	ok, 26 vertices	1	36	0.3	143	32	0	pass	7	5063	38.3	139.2	0.225	15 → 0	pass	677	extrude	1416	1.000	1.000	342	no: Steps: meshing failed: octree hex meshing failed after 2 builds: 4 elements fail the certified validity check; refining for another build needs more than 250000 grid cells (the grid needs more than 250000 cells)				15666
thin-ribs	thin-wall, blocky	1	26	92	0.119	619	32000.0	32000.0	-4.5e-16	32000.0	ok, 48 vertices	0	72	0.7	171	33	0	pass	13	23922	24.2	155.7	0.058	141 → 0	pass	9970	extrude	1659	0.124	0.124	351	no: Plate: limit reached: the part has walls 0.8000 thick, which 3 cells across need cells of 0.2667: 3 levels below a size of 4.7625, more than 2588948 grid cells by level 3; or 2 levels below a size of 2.4000, more than 1284890 grid cells by level 2				234
thin-wall-enclosure	thin-wall, blocky	1	11	28	0.108	54	15564.0	15564.0	0.0e0	15564.0	ok, 16 vertices	0	24	0.1	80	18	4	pass	3	19237	23.8	153.6	0.037	78 → 0	pass	6188	extrude	926	0.707	0.707	118	no: Enclosure: limit reached: the part has walls 1.0000 thick, which 3 cells across need cells of 0.3333: 3 levels below a size of 4.3081, more than 3945836 grid cells by level 3; or 2 levels below a size of 3.0000, more than 1023496 grid cells by level 2				183
analytic-sphere	analytic	1	6	2784	0.069	309	33353.4	33507.9	-4.6e-3	33510.3	ok, 1394 vertices	0	96	7.7	3671	58	0	pass	334	10074	37.0	140.1	0.230	2448 → 0	pass	1958	no: Sphere: not supported yet: no structured hex method fits this body (extrude: no direction to try; sweep: no planar face to sweep from; revolve: no axis to try; mapped: meshing failed: meshing failed: mesh validity gate: 8 inverted or degenerate ele				28	2400	0.538	0.866	-1.3e-2	1033
analytic-torus	analytic, genus	1	6	7230	0.109	317	37644.1	37893.7	-6.6e-3	37899.3	ok, 3615 vertices	1	180	18.5	18528	466	0	9 flat	812	22988	33.4	145.0	0.154	12988 → 0	pass	4503	revolve	1080	0.834	0.834	165	18814	0.460	0.881	-1.2e-2	5674
analytic-cylinder	analytic, sweepable	1	4	1004	0.049	26	12533.1	12564.7	-2.5e-3	12566.4	ok, 504 vertices	0	106	3.0	7382	1568	0	pass	269	20056	26.2	152.2	0.089	4373 → 0	pass	6907	extrude	3200	0.850	0.850	346	2424	0.532	0.919	-9.1e-3	701
analytic-pipe	analytic, genus, sweepable	1	6	1448	0.104	44	94150.9	94238.0	-9.3e-4	94247.8	ok, 724 vertices	1	220	4.3	6193	1340	0	pass	280	16627	31.4	145.5	0.150	1445 → 0	pass	2490	extrude	1288	0.998	0.998	149	53680	0.520	0.944	-7.8e-4	21679
analytic-plate-hole	analytic, genus, sweepable	1	8	112	0.224	65	98449.1	98429.5	2.0e-4	98429.2	ok, 56 vertices	1	62	0.9	1848	543	0	pass	87	2394	31.4	145.3	0.230	342 → 0	pass	904	extrude	488	0.642	0.655	403	163664	0.309	0.989	2.2e-4	112185

Categories

category	stresses	parts
thin-wall	walls thin against the part's size	7
small-feature	features much smaller than the part	1
fillet	blends between faces	3
genus	through holes (genus > 0)	8
sharp	sharp edges and acute dihedral angles	3
near-tangent	faces meeting at a shallow angle	2
boolean	intersection curves from booleans	3
sweepable	extrusions and sweeps (one-to-one sweep meshing)	9
blocky	axis-aligned blocks (polycube-friendly)	4
organic	free-form, lofted or revolved spline surfaces	2
assembly	several bodies placed by component transforms	1
partitioned	split into cells that each mesh as a mapped block (conforming multi-block hex)	1
analytic	closed-form geometry for solver verification	5

Parts

• bent-tube: A 10 mm tube with a 1 mm wall, bent through R30: a thin-walled sweep along a line-arc-line path.
• bolted-assembly: A base plate with a clamp block component placed twice, once turned 90 degrees: bodies placed by component transforms.
• cantilever-i-beam: The 200 mm I-beam of i-beam lying along X with its web upright (Z up): a sweep along a horizontal axis, and the cantilever of the README demo.
• cross-cylinders: Two orthogonal R10 cylinders joined: equal radii, so the intersection curves cross at two singular points.
• filleted-bracket: An 8 mm L-bracket with an R6 inside fillet and a hole through each leg: a blend beside holes.
• filleted-bracket-blocks: The filleted bracket split into 30 cells with SolidCraft's Split Body (three slabs across its width, the corner halved along its diagonal, an O-grid of four cells round each hole) so that every cell is a mapped block: conforming multi-block hex meshing.
• i-beam: A 200 mm I-beam with 3 mm flanges and a 2 mm web: a long sweepable prism with thin walls.
• loft-transition: A 40 mm square lofted to an R15 circle 50 mm above: a ruled free-form surface between unlike sections.
• perforated-plate: A 3 mm plate perforated by a 6 x 4 grid of 6 mm holes: genus 24 in a thin sheet.
• pinhole-block: A 50 mm block drilled through by sixteen 0.6 mm pinholes: features 80 times smaller than the part, genus 16.
• rounded-box: A 40 x 30 x 20 box with every edge rounded R3: cylinder and sphere blends meeting at the corners.
• shallow-groove: A block with a 0.5 mm deep groove cut by an R30 cylinder: groove walls 10 degrees off the top face.
• sharp-wedge: A wedge whose faces meet at under 3 degrees: a sharp edge with a needle-thin cross-section.
• sphere-on-plate: A sphere sunk 0.1 mm into a plate: the faces meet at under 6 degrees around a 2 mm circle.
• spline-vase: A vase revolved from a spline profile: doubly curved faces of varying curvature around a closed axis.
• stepped-block: Three stacked blocks with a slot cut through the base: axis-aligned steps for polycube and octree meshers.
• thin-ribs: A 4 mm plate carrying five 0.8 mm ribs 20 mm tall: thin walls standing on a thicker base.
• thin-wall-enclosure: An 80 x 60 x 40 box shelled to 1 mm walls, open on top: thin walls over a large span.
• analytic-sphere: Sphere r 20: curvature everywhere, no edges.
• analytic-torus: Torus 30/8: genus 1 with doubly curved faces and no edges.
• analytic-cylinder: Cylinder r 10, h 40: the round bar of beam and torsion checks.
• analytic-pipe: Thick-walled pipe 20/30, length 60: the Lamé cylinder.
• analytic-plate-hole: Plate 200 x 100 x 5 with a 20 mm hole: the Kirsch plate.