COMSOL 6.2 - Geometric Model Information Methods

	For a GeomSequence whose component’s geometric model is defined by a MeshSequence, the GeomInfo methods return information about that geometric model, not about the GeomSequence. The behavior in this case might change in a future version.

Table 3-13: General Geometry Information Methods.
method	Description
check	Throw an exception if the geometry or mesh is invalid.
getBoundingBox	Return bounding box as the bounding-box coordinates (xmin, xmax, ymin, ymax, ...).
getSDim	Get the space dimension.
getType	Get the geometry object type (solid, surface, curve, point, mixed, or empty).
hasCadRep	Check if this is a 3D geometry represented using the CAD kernel.
isAssembly	Check if this is a geometry of assembly type (originating from a Form Assembly feature), including virtual geometries based on a real assembly geometry.
isMesh	Return true if this geometric model is represented by a mesh (rather than a geometry).
isVirtual	Return true if this is a virtual geometry.

Table 3-13: General Geometry Information Methods.

method

Description

check

Throw an exception if the geometry or mesh is invalid.

getBoundingBox

Return bounding box as the bounding-box coordinates (xmin, xmax, ymin, ymax, ...).

getSDim

Get the space dimension.

getType

Get the geometry object type (solid, surface, curve, point, mixed, or empty).

hasCadRep

Check if this is a 3D geometry represented using the CAD kernel.

isAssembly

Check if this is a geometry of assembly type (originating from a Form Assembly feature), including virtual geometries based on a real assembly geometry.

isMesh

Return true if this geometric model is represented by a mesh (rather than a geometry).

isVirtual

Return true if this is a virtual geometry.

Table 3-14: Geometric Entity Counters.
method	Description
getNEntities	Get number of entities of different dimensions
getNVertices	Get number of vertices
getNEdges	Get number of edges
getNFaces	Get number of faces
getNBoundaries	Get number of boundaries
getNDomains	Get number of domains
getNEntitiesMesh	Get number of entities of different dimensions in the geometry used for meshing

Table 3-14: Geometric Entity Counters.

method

Description

getNEntities

Get number of entities of different dimensions

getNVertices

Get number of vertices

Get number of boundaries

getNDomains

Get number of domains

getNEntitiesMesh

Get number of entities of different dimensions in the geometry used for meshing

Table 3-15: Adjacency Between Geometric Entities.
method	Description
getStartEnd	Get start and end vertices of edges
getUpDown	Get up and down domain indices
getUpDownExt	Get up and down extended domain indices
getVertexDomain	Get domain index for isolated vertices
getSD	Get domain index for isolated vertices
getAdj	Get adjacency matrices
getAdjOrient	Get adjacency orientation

Table 3-15: Adjacency Between Geometric Entities.

method

Description

getStartEnd

Get start and end vertices of edges

getUpDown

Get up and down domain indices

getUpDownExt

Get up and down extended domain indices

getVertexDomain

Get domain index for isolated vertices

getSD

Get domain index for isolated vertices

getAdj

Get adjacency matrices

getAdjOrient

Get adjacency orientation

Table 3-16: Edge Evaluation Methods.
method	Notes	Description
edgeParamRange		Get parameter range of edge
edgeX	1	Evaluate coordinates.
edgeDX	1	Evaluate first derivative.
edgeDDX	1	Evaluate second derivative.
edgeNormal	1	Evaluate normal vector in 2D.
edgeCurvature	1	Evaluate curvature. Not supported for geometric models defined by a mesh.
edgeTorsion	1	Evaluate torsion in 3D. Not supported for geometric models defined by a mesh.
1 Not supported for geometric models defined by a mesh.

Table 3-16: Edge Evaluation Methods.

Get parameter range of edge

edgeX

Evaluate coordinates.

edgeDX

Evaluate first derivative.

edgeDDX

Evaluate second derivative.

edgeNormal

Evaluate normal vector in 2D.

edgeCurvature

Evaluate curvature. Not supported for geometric models defined by a mesh.

edgeTorsion

Evaluate torsion in 3D. Not supported for geometric models defined by a mesh.

1 Not supported for geometric models defined by a mesh.

Table 3-17: Face Evaluation Methods.
method	Notes	Description
faceParamRange	1,2	Get parameter ranges of face.
faceX	1,2	Evaluate coordinates.
faceDX	1,2	Evaluate first derivatives.
faceDDX	1,2	Evaluate second derivatives.
faceNormal	1,2	Evaluate normal vector.
faceFF1	1,2	Evaluate first fundamental form.
faceFF2	1,2	Evaluate second fundamental form.
faceGaussCurvature	1,2	Evaluate Gauss curvature.
faceMeanCurvature	1,2	Evaluate mean curvature.
1 Not supported for geometric models defined by a mesh. 2 Only supported for faces that are not virtual.

Table 3-17: Face Evaluation Methods.

Get parameter ranges of face.

faceX

1,2

Evaluate coordinates.

faceDX

1,2

Evaluate first derivatives.

faceDDX

1,2

Evaluate second derivatives.

faceNormal

1,2

Evaluate normal vector.

faceFF1

1,2

Evaluate first fundamental form.

faceFF2

1,2

Evaluate second fundamental form.

faceGaussCurvature

1,2

Evaluate Gauss curvature.

faceMeanCurvature

1,2

Evaluate mean curvature.

1 Not supported for geometric models defined by a mesh.

2 Only supported for faces that are not virtual.

Table 3-18: Get Arrays in Geometry Representation.
method	Notes	Description
getVertex	1,3	Get vertex matrix.
getEdges	1,3	Get edge matrix.
getFaces	1,3	Get face matrix.
getPVertex	1,3	Get parameter vertices (embeddings of vertices in faces).
getPEdge	1,3	Get parameter edges (embeddings of edges in faces).
getVertexCoord		Get vertex coordinates.
1 Not supported for geometric models defined by a mesh. 3 Only supported on geometry objects using the COMSOL kernel, and not for assembly geometries or virtual geometries.

Table 3-18: Get Arrays in Geometry Representation.

Get parameter vertices (embeddings of vertices in faces).

getPEdge

1,3

Get parameter edges (embeddings of edges in faces).

getVertexCoord

Get vertex coordinates.

1 Not supported for geometric models defined by a mesh.

3 Only supported on geometry objects using the COMSOL kernel, and not for assembly geometries or virtual geometries.

	In the GeomSequence interface, the GeomInfo methods give information about the finalized geometry of the geometry sequence. However, for a GeomSequence whose component's geometric model is defined by a MeshSequence, the GeomInfo methods instead return information about that geometric model. The behavior in this case might change in a future version. GeomSequence.obj gives information about a geometry object resulting from a geometry feature. You can use GeomSequence.axisymmetric(boolean) to change its axisymmetry status.

In the GeomSequence interface, the GeomInfo methods give information about the finalized geometry of the geometry sequence. However, for a GeomSequence whose component's geometric model is defined by a MeshSequence, the GeomInfo methods instead return information about that geometric model. The behavior in this case might change in a future version.

GeomSequence.obj gives information about a geometry object resulting from a geometry feature.

You can use GeomSequence.axisymmetric(boolean) to change its axisymmetry status.