Geometric Model Information Methods
Every geometry object in a geometry sequence, as well as the finalized geometry, have an associated GeomInfo object for which you can get information about the geometric model.
To get the GeomInfo object for a geometry object <objtag>, use:
GeomInfo info = model.component(<ctag>).geom(<tag>).obj(<objtag>);
To get the GeomInfo object for the finalized geometry or for the geometric model of a component that is defined by a mesh, use:
GeomInfo info = model.component(<ctag>).geom(<tag>).info();
For more information about getting information for meshes, see Information on the Geometric Model.
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.
General Information
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.
Geometric Entity Counters
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
Adjacency
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
Edge Evaluation
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.
Face Evaluation
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.
Geometry Representation Arrays
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.
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.