conftest Namespace Reference

Functions
	_write_groups_msh (path, dim, coords, groups)
	_tet_grid (nx, ny, nz)
	make_two_boxes_3d (path)
	make_jagged_2d (path, nx=16, ny=8)
	boxes3d (tmp_path)
	jagged2d (tmp_path)

Variables
str	cand = up / "build" / "bin"
	POLYFEM_BIN = os.environ.get("POLYFEM_BIN")
	needs_polyfem

Detailed Description

Fixtures: synthetic multi-tag meshes and PolyFEM discovery.

Meshes are built directly with gmsh (Freudenthal/Kuhn tet grids, conforming
across cells) so tests are deterministic and need no external data.

Function Documentation

_tet_grid()

conftest._tet_grid (   nx,   ny,   nz  )

protected

Freudenthal 6-tet-per-cube grid. Returns (coords, cube_tets) where
cube_tets[(i,j,k)] = list of 4-tuples of 1-based node tags. Conforming
across cubes (consistent main diagonal).

_write_groups_msh()

conftest._write_groups_msh (   path,   dim,   coords,   groups  )

protected

Write a physical-groups .msh: coords (n,3) 1-based-node-tag order,
groups = {name: [prim vertex tuples]} written in insertion order
(first group owns the node block, matching wmtk's convention).

make_jagged_2d()

conftest.make_jagged_2d	(		path,
			nx = 16,
			ny = 8
	)

2D triangle grid with a staircase tag_0/ambient interface: tag_0 =
squares with i < 4 + (j % 2). The interface zigzags between x=4 and
x=5 — high turning angle, ideal smoothing target.

make_two_boxes_3d()

conftest.make_two_boxes_3d

(

path

)

7x4x4 unit-cube tet grid: tag_0 = box x in [1,2], tag_1 = box x in
[3,4] (both y,z in [1,3]), ambient elsewhere. The bodies are fully
interior, separated by a 1-unit ambient gap along x.

Variable Documentation

needs_polyfem

conftest.needs_polyfem

Initial value:

=  pytest.mark.skipif(
    POLYFEM_BIN is None,
    reason="export POLYFEM_BIN=/path/to/PolyFEM_bin to run the polyfem tests")