geo Namespace Reference

Functions
	_split_surfaces (msh_path, sel_a, sel_b)
float	min_separation_3d (msh_path, sel_a, sel_b)
	interface_polyline_2d (msh_path, selection)
float	roughness_2d (coords, edges)
float	polyline_length (coords, edges)
	signed_volumes (msh_path)

Detailed Description

Geometry measurements used by the tests: body-to-body separation,
2D interface roughness/length, and element-inversion checks.

Function Documentation

_split_surfaces()

geo._split_surfaces (   msh_path,   sel_a,   sel_b  )

protected

Extract the two selected surfaces; returns (coords, faces_a, faces_b)
with faces as (n,3) global-index triangle arrays (3D only).

interface_polyline_2d()

geo.interface_polyline_2d	(		msh_path,
			selection
	)

Return (coords (n,2), edges (m,2) global indices) of a 2D interface.

min_separation_3d()

float geo.min_separation_3d	(		msh_path,
			sel_a,
			sel_b
	)

Minimum vertex-to-surface distance between the two selected surfaces
(checked in both directions). Exact for flat facing surfaces; a tight
upper bound in general.

roughness_2d()

float geo.roughness_2d	(		coords,
			edges
	)

Total turning of the interface: sum over 2-valent nodes of
|pi - angle between incident edges|. A straight line scores 0.

signed_volumes()

geo.signed_volumes

(

msh_path

)

Signed volumes (3D tets) or signed areas (2D triangles) of every
primitive, deduplicated across multi-tag copies, in a stable order
(sorted vertex tuples). Comparing signs pre/post detects inversions.