module gmsh.model.geo.mesh

Built-in CAD kernel meshing constraints

gmsh.model.geo.mesh.setSize(dimTags, size)

Set a mesh size constraint on the entities dimTags in the built-in CAD kernel representation. Currently only entities of dimension 0 (points) are handled.

gmsh.model.geo.mesh.setTransfiniteCurve(tag, nPoints, meshType = "Progression", coef = 1.)

Set a transfinite meshing constraint on the curve tag in the built-in CAD kernel representation, with numNodes nodes distributed according to meshType and coef. Currently supported types are "Progression" (geometrical progression with power coef) and "Bump" (refinement toward both extremities of the curve).

gmsh.model.geo.mesh.setTransfiniteSurface(tag, arrangement = "Left", cornerTags = Cint[])

Set a transfinite meshing constraint on the surface tag in the built-in CAD kernel representation. arrangement describes the arrangement of the triangles when the surface is not flagged as recombined: currently supported values are "Left", "Right", "AlternateLeft" and "AlternateRight". cornerTags can be used to specify the (3 or 4) corners of the transfinite interpolation explicitly; specifying the corners explicitly is mandatory if the surface has more that 3 or 4 points on its boundary.

gmsh.model.geo.mesh.setTransfiniteVolume(tag, cornerTags = Cint[])

Set a transfinite meshing constraint on the surface tag in the built-in CAD kernel representation. cornerTags can be used to specify the (6 or 8) corners of the transfinite interpolation explicitly.

gmsh.model.geo.mesh.setRecombine(dim, tag, angle = 45.)

Set a recombination meshing constraint on the entity of dimension dim and tag tag in the built-in CAD kernel representation. Currently only entities of dimension 2 (to recombine triangles into quadrangles) are supported.

gmsh.model.geo.mesh.setSmoothing(dim, tag, val)

Set a smoothing meshing constraint on the entity of dimension dim and tag tag in the built-in CAD kernel representation. val iterations of a Laplace smoother are applied.

gmsh.model.geo.mesh.setReverse(dim, tag, val = true)

Set a reverse meshing constraint on the entity of dimension dim and tag tag in the built-in CAD kernel representation. If val is true, the mesh orientation will be reversed with respect to the natural mesh orientation (i.e. the orientation consistent with the orientation of the geometry). If val is false, the mesh is left as-is.

gmsh.model.geo.mesh.setAlgorithm(dim, tag, val)

Set the meshing algorithm on the entity of dimension dim and tag tag in the built-in CAD kernel representation. Currently only supported for dim == 2.

gmsh.model.geo.mesh.setSizeFromBoundary(dim, tag, val)

Force the mesh size to be extended from the boundary, or not, for the entity of dimension dim and tag tag in the built-in CAD kernel representation. Currently only supported for dim == 2.