Mesh Tuning Parameters

Every mesh-generation parameter, its range, and where the same name works

Mesh tuning parameters

This page lists every tunable mesh-generation parameter. The same names work in four places:

The Mesh Lab Sweep tab (the rows of the parameter table).
The post-process chain string, as named parameters: remesh(iterations=5, smoothLambda=0.3).
Pipeline definition JSON (the extraction-level fields).
The mesh.sweep.run OPAL task (paramSetJson entries by id).

A value left at its default never overrides the base definition. Only a changed row applies.

Id	Range	Default	Meaning
`cellSize`	0.001 – 10	0.1	Sampling lattice cell, world units. Smaller = finer surface, more triangles.
`extractor`	MC, DC, DC-octree	DC-octree	Surface extractor family.
`backend`	CPU, Native, GPU	Native	Field evaluator. CPU is the interpreter and is 100–1000× slower.
`sealed`	on / off	on	Cap the domain boundary so the mesh is watertight.
`adaptiveOctree`	on / off	on	Allow adaptive QEF collapse (DC-octree). A box clip still forces full depth near the cut.
`residualTolerance`	0 – 10	0 (derived)	QEF collapse tolerance. 0 = the derived default `0.01 × cellSize²`.

Id	Range	Default	Meaning
`sdfProject.iterations`	1 – 8	2	Outer relax-project rounds.
`sdfProject.newtonSteps`	1 – 3	2	Newton steps per projection pass.
`sdfProject.featureAngleDeg`	5 – 90	30	Dihedral crease threshold, degrees.
`sdfProject.smoothLambda`	0 – 1	0.5	Tangential relaxation damping.
`sdfProject.creaseSnap`	on / off	off	Two-constraint crease Newton snap. Wins crease sharpness, costs sliver triangles.

Id	Range	Default	Meaning
`remesh.targetEdgeLength`	0 – 10	0 (auto)	Target edge length, world units. 0 = the input mesh's mean edge.
`remesh.iterations`	1 – 10	3	Structural pass rounds (split / collapse / flip / smooth).
`remesh.featureAngleDeg`	5 – 90	45	Dihedral feature threshold, degrees.
`remesh.smoothLambda`	0 – 1	0.5	Tangential relaxation damping.
`remesh.defectPass`	on / off	on	Fold-over flap cleanup. Turn off only for A/B attribution.

A chain step that the definition does not contain ignores its parameters. The default chain is weld, sdfProject(2), remesh.