net.von_gagern.martin.confoo.mesh.flat
Class Mesh2D

java.lang.Object
  net.von_gagern.martin.confoo.mesh.flat.Mesh2D

All Implemented Interfaces:

Iterable<Triangle2D>, CombinatoricMesh<Vertex2D>, LocatedMesh<Vertex2D>, MetricMesh<Vertex2D>

public class Mesh2D
extends Object
implements LocatedMesh<Vertex2D>, Iterable<Triangle2D>

A 2D triangle mesh.

Vertices of this mesh are identified by their coordinates, not object identity.

Since:

1.0

Author:

Martin von Gagern

Constructor Summary

Mesh2D(Collection<? extends CorneredTriangle<? extends Point2D>> mesh)
Construct 2D mesh from collection of triangles.

Mesh2D(LocatedMesh<V> mesh)
Construct 2D mesh from a located mesh.

Method Summary

double	edgeLength(Vertex2D v1, Vertex2D v2) Determine edge length.
Shape	getBoundary() Retrieve boundary shape.
Set<Edge2D>	getBoundaryEdges() Retrieve collection of all boundary edges.
Set<Edge2D>	getEdges() Retrieve collection of all edges.
Set<Edge2D>	getInteriorEdges() Retrieve collection of all interior edges.
List<Triangle2D>	getTriangles() Retrieve collection of triangles.
double	getX(Vertex2D v) Get x coordinate of vertex.
double	getY(Vertex2D v) Get y coordinate of vertex.
double	getZ(Vertex2D v) Get z coordinate of vertex.
Iterator<Triangle2D>	iterator() Return iterator over all triangles.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Mesh2D

public Mesh2D(LocatedMesh<V> mesh)

Construct 2D mesh from a located mesh. The z coordinates of the input mesh will be simply ignored. After construction the two meshes will be independent.

Parameters:

mesh - the mesh to be copied

Mesh2D

public Mesh2D(Collection<? extends CorneredTriangle<? extends Point2D>> mesh)

Construct 2D mesh from collection of triangles. After construction the mesh will be independent.

Parameters:

mesh - the triangles making up the mesh

Method Detail

iterator

public Iterator<Triangle2D> iterator()

Return iterator over all triangles.

Specified by:

iterator in interface Iterable<Triangle2D>

Specified by:

iterator in interface CombinatoricMesh<Vertex2D>

Returns:

an iterator over the triangles of the mesh

See Also:

Iterable.iterator(), MeshIterator

edgeLength

public double edgeLength(Vertex2D v1,
                         Vertex2D v2)

Determine edge length.

Specified by:

edgeLength in interface MetricMesh<Vertex2D>

Parameters:

v1 - one vertex

v2 - a second vertex

Returns:

the distance between the vertices

getX

public double getX(Vertex2D v)

Get x coordinate of vertex.

Specified by:

getX in interface LocatedMesh<Vertex2D>

Parameters:

v - a vertex

Returns:

the x coordinate of v

getY

public double getY(Vertex2D v)

Get y coordinate of vertex.

Specified by:

getY in interface LocatedMesh<Vertex2D>

Parameters:

v - a vertex

Returns:

the y coordinate of v

getZ

public double getZ(Vertex2D v)

Get z coordinate of vertex. As this is a 2D mesh, this method will always return zero.

Specified by:

getZ in interface LocatedMesh<Vertex2D>

Parameters:

v - a vertex

Returns:

zero

getTriangles

public List<Triangle2D> getTriangles()

Retrieve collection of triangles.

Returns:

the list of all triangles

getEdges

public Set<Edge2D> getEdges()

Retrieve collection of all edges.

Returns:

the set of all edges

getInteriorEdges

public Set<Edge2D> getInteriorEdges()

Retrieve collection of all interior edges. Interior edges are edges incident to more than one triangle.

Returns:

the set of all interior edges

getBoundaryEdges

public Set<Edge2D> getBoundaryEdges()

Retrieve collection of all boundary edges. Boundary edges are edges incident to only one triangle.

Returns:

the set of all boundary edges

getBoundary

public Shape getBoundary()

Retrieve boundary shape. This is the shape consisting of all polygones made up by boundary edges.

Returns:

the boundary shape