concepts::Import3dMesh Class Reference

#include <meshImport3D.hh>

Inheritance diagram for concepts::Import3dMesh:

Classes
class	NodeCell
class	NodeHexahedron
class	NodeTetrahedron

Public Member Functions
	Import3dMesh (const std::string coord, const std::string elms, const std::string boundary, const uint idxStart=1, const bool leftHand=false, const uint elmtyp=0)
virtual uint	ncell () const
	Returns the number of cells in the mesh.
virtual Scan3 *	scan ()

Protected Member Functions
virtual std::ostream &	info (std::ostream &os) const
	Returns information in an output stream.

Detailed Description

Imports 3D mesh with tetrahedra and hexahedra. They can be mixed in the mesh—the only problem is, that tetrahedra and hexahedra cannot connect to each other, but this importer can be enhanced to support prisms or pyramids as well.

The notation for the meshes is used in [1] for instance.

Author

Philipp Frauenfelder, 2002

Test:

test::DeadLock1

test::DeadLock3

See also

[1] Alberty, Carstensen, Funken, Remarks Around 50 Lines of MATLAB: Finite Element Implementation, 1998

Examples

hpFEM3d-EV.cc.

Definition at line 94 of file meshImport3D.hh.

Constructor & Destructor Documentation

Import3dMesh()

concepts::Import3dMesh::Import3dMesh	(	const std::string	coord,
		const std::string	elms,
		const std::string	boundary,
		const uint	idxStart = 1,
		const bool	leftHand = false,
		const uint	elmtyp = 0
	)

Constructor. Reads the data from three files and creates a mesh from it. The vertices, faces and cells should be number in striclty increasing order, ie. 1, 2, 3 etc.

Parameters

coord	File with coordinates of vertices. Format: <node> <x> <y> <z> For instance: 1 1.0 1.0 2.0 2 0.0 0.5 1.0 3 0.0 0.0 0.0 4 -1.0 2.0 3.0
elms	File with node numbers of tetrahedra or hexahedra. Format: <tetrahedron> <node0> <node1> <node2> <node3> or <hexahedron> <node0> <node1> <node2> <node3> <node4> <node5> <node6> <node7> For instance: 1 1 2 3 4 or 1 1 2 3 4 5 6 7 8
boundary	File with node numbers of edges with boundary conditions and attribute number. Format for a triangle: <face> <node0> <node1> <node2> <attr> Format for a quad: <face> <node0> <node1> <node2> <node3> <attr> Format for an edge: <edge> <node0> <node1> <attr> Format for a vertex: <vtx> <node> <attr> For instance: 1 2 33 2 1 2 66 3 1 2 3 44 4 1 2 3 4 55 Vertices should come first in the list of boundary attributes, then edges and triangle or quads last.
idxStart	Starting point of indices in the files (1 or 0)
leftHand	Indicates if the order of the points in a tet follow the left hand rule
elmtyp	only for hexahedras (0: Hexahedron3d is used, 1: Parallelepiped3d is used)

Member Function Documentation

info()

virtual std::ostream & concepts::Import3dMesh::info ( std::ostream &  os ) const

protectedvirtual

Returns information in an output stream.

Reimplemented from concepts::Mesh.

ncell()

virtual uint concepts::Import3dMesh::ncell ( ) const

inlinevirtual

Returns the number of cells in the mesh.

Implements concepts::Mesh.

Definition at line 140 of file meshImport3D.hh.

scan()

virtual Scan3 * concepts::Import3dMesh::scan ( )

inlinevirtual

Returns a scanner over the cells of the mesh.

Postcondition

The scanner must be deleted after usage. This has to be done by the user.

Implements concepts::Mesh3.

Definition at line 141 of file meshImport3D.hh.

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The documentation for this class was generated from the following file:

• geometry/meshImport3D.hh