2.3.3.3.54. NXcg_alpha_complex

Status:

base class, extends NXcg_primitive_set

Description:

Computational geometry of alpha shapes or alpha wrappings about primitives. ...

Computational geometry of alpha shapes or alpha wrappings about primitives.

For details see:

in CGAL, the Computational Geometry Algorithms Library. As a starting point, we follow the conventions of the CGAL library.

Symbols:

No symbol table

Groups cited:

NXcg_point_set, NXcg_tetrahedron_set, NXcg_triangle_set

Structure:

type: (optional) NX_CHAR

Type of alpha complex following the terminology used by CGAL for now. ...

Type of alpha complex following the terminology used by CGAL for now.

Basic means (unweighted) alpha shapes. Alpha_wrapping means meshes created using the alpha_wrapping algorithm.

Any of these values: convex_hull | alpha_shape | alpha_wrapping

regularize_alpha_complex: (optional) NX_BOOLEAN

Are singular faces removed, i.e. has the alpha complex ...

Are singular faces removed, i.e. has the alpha complex been regularized or not.

alpha: (optional) NX_NUMBER {units=NX_LENGTH}

The alpha parameter, i.e. the radius of the alpha-sphere that ...

The alpha parameter, i.e. the radius of the alpha-sphere that is used when computing the alpha complex.

offset: (optional) NX_NUMBER {units=NX_LENGTH}

The offset distance parameter used when computing alpha_wrappings.

point_setID: (optional) NXcg_point_set

Point cloud for which the alpha shape or wrapping has been computed.

triangle_setID: (optional) NXcg_triangle_set

Triangle soup for which the alpha wrapping has been computed.

triangle_meshID: (optional) NXcg_triangle_set

Triangle mesh representing the alpha complex.

interior_cellsID: (optional) NXcg_tetrahedron_set

Set of tetrahedra representing the volume inside the alpha complex.

Hypertext Anchors

List of hypertext anchors for all groups, fields, attributes, and links defined in this class.

NXDL Source:

https://github.com/FAIRmat-NFDI/nexus_definitions/tree/fairmat/contributed_definitions/NXcg_alpha_complex.nxdl.xml