IGLMeshDS
Module: meshvs
A finite element mesh data structure with geometry and group information.
This class manages mesh topology, node coordinates, element connectivity,
and element grouping for visualization and FEA analysis.
__init__
method
__init__(self, mesh_id: int, name: str)
Initializes the mesh data structure.
Args
| Name | Type | Description |
|---|---|---|
| mesh_id | Unique identifier for the mesh. | |
| name | Display name for the mesh. |
SetMeshData
method
SetMeshData(self, impmesh)
Populates mesh data from an imported mesh object.
Copies node coordinates, element connectivity, element metadata,
and group information from the source mesh.
Copies node coordinates, element connectivity, element metadata,
and group information from the source mesh.
Args
| Name | Type | Description |
|---|---|---|
| impmesh | Source mesh object containing nodes, connectivity, element types, | dimensions, triangles, edges, and group data. |
GetElements
method
GetElements(self)
Returns the element connectivity array.
Returns
np.ndarray: Element connectivity with shape (M, 3) for triangular meshes.
GetNormals
method
GetNormals(self)
Returns the vertex normal vectors.
Returns
np.ndarray: Normal vectors with shape (N, 3) in float32, or None if not computed.
ComputeNormals
method
ComputeNormals(self)
Computes per-vertex normals from triangle geometry.
Calculates normal vectors for each vertex by averaging cross products
of edge vectors from all incident triangles. Results are normalized
and stored as float32.
GetNumNodes
method
GetNumNodes(self)
Returns the number of nodes in the mesh.
Returns
int: Number of vertices, or 0 if mesh is empty.
GetProperties
method
GetProperties(self)
Returns a formatted dictionary of mesh properties and statistics.
Includes mesh summary (node/element counts), element type distribution,
bounding box coordinates, and physical group information.
Includes mesh summary (node/element counts), element type distribution,
bounding box coordinates, and physical group information.
Returns
dict: Properties dictionary with hierarchical string keys and string values.
GetMshGrps
method
GetMshGrps(self)
Returns the list of mesh group names.
Returns
list: Physical group identifiers from the mesh.
GetNodeIdToIdx
method
GetNodeIdToIdx(self)