3.3.1.46. NXcg_tetrahedron¶
Status:
base class, extends NXcg_primitive
Description:
Computational geometry description of a set of tetrahedra. …
Computational geometry description of a set of tetrahedra.
Among hexahedral elements, tetrahedral elements are one of the most frequently used geometric primitive for meshing and describing volumetric objects in continuum-field simulations.
Symbols:
The symbols used in the schema to specify e.g. dimensions of arrays.
c: The cardinality of the set, i.e. the number of tetrahedra.
- Groups cited:
NXcg_face_list_data_structure, NXcg_half_edge_data_structure
Structure:
@NX_class: (required) NX_CHAR
Type of the NeXus group: the name of its class. …
Type of the NeXus group: the name of its class.
Obligatory value:
NXcg_tetrahedronface_area: (optional) NX_NUMBER (Rank: 2, Dimensions: [c, 4]) {units=NX_AREA}
Area of each of the four triangular faces of each tetrahedron.
edge_length: (optional) NX_NUMBER (Rank: 2, Dimensions: [c, 6]) {units=NX_LENGTH}
Length of each edge of each tetrahedron.
tetrahedra: (optional) NXcg_face_list_data_structure
Combined storage of all primitives of all tetrahedra.
tetrahedronID: (optional) NXcg_face_list_data_structure
Individual storage of each tetrahedron.
tetrahedron_half_edgeID: (optional) NXcg_half_edge_data_structure
Individual storage of each tetrahedron as a graph.
Hypertext Anchors¶
List of hypertext anchors for all NeXus groups, fields, attributes and links documented in this class.