Edge.h

Note

The documentation on this page was automatically extracted from the DOLFIN C++ code and may need to be edited or expanded.

class Edge

Parent class(es)

• MeshEntity

An Edge is a MeshEntity of topological dimension 1.

Edge(const Mesh& mesh, std::size_t index)

Create edge on given mesh

Arguments

mesh (Mesh)

The mesh.

index (std::size_t)

Index of the edge.

Edge(MeshEntity& entity)

Create edge from mesh entity

Arguments

entity (MeshEntity)

The mesh entity to create an edge from.

double length() const

Compute Euclidean length of edge

Returns

double

Euclidean length of edge.

Example

UnitSquare mesh(2, 2);
Edge edge(mesh, 0);
info("%g", edge.length());

output:

0.5

double dot(const Edge& edge) const

Compute dot product between edge and other edge

Arguments

edge (Edge)

Another edge.

Returns

double

The dot product.

Example

UnitSquare mesh(2, 2);
Edge edge1(mesh, 0);
Edge edge2(mesh, 1);
info("%g", edge1.dot(edge2));

output:

0.25

class EdgeFunction

Parent class(es)

• MeshFunction

An EdgeFunction is a MeshFunction of topological dimension 1.