fr.inria.zvtm.layout.delaunay

Class Simplex<V>

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractSet<V>

fr.inria.zvtm.layout.delaunay.Simplex<V>

All Implemented Interfaces:

Iterable<V>, Collection<V>, Set<V>

public class Simplex<V>
extends AbstractSet<V>
implements Set<V>

A Simplex is an immutable set of vertices (usually Pnts).

Author:

Paul Chew Created July 2005. Derived from an earlier, messier version.

Field Summary

Fields

Modifier and Type	Field and Description
static boolean	moreInfo

Constructor Summary

Constructors

Constructor and Description
Simplex(Collection<? extends V> collection) Constructor.
Simplex(V... vertices) Constructor.

Method Summary

Modifier and Type	Method and Description
static <V> Set<Set<V>>	boundary(Set<? extends Simplex<V>> simplexSet) Report the boundary of a Set of Simplices.
int	dimension() Dimension of the Simplex.
boolean	equals(Object o) We want to allow for different simplices that share the same vertex set.
List<Set<V>>	facets() Report the facets of this Simplex.
int	hashCode()
boolean	isNeighbor(Simplex<V> simplex) True iff simplices are neighbors.
Iterator<V>	iterator()
int	size()
String	toString() String representation.

Methods inherited from class java.util.AbstractSet

removeAll

Methods inherited from class java.util.AbstractCollection

add, addAll, clear, contains, containsAll, isEmpty, remove, retainAll, toArray, toArray

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Set

add, addAll, clear, contains, containsAll, isEmpty, remove, removeAll, retainAll, spliterator, toArray, toArray

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream

Methods inherited from interface java.lang.Iterable

forEach

Field Detail

moreInfo

public static boolean moreInfo

Constructor Detail

Simplex

public Simplex(Collection<? extends V> collection)

Constructor.

Parameters:

collection - a Collection holding the Simplex vertices

Throws:

IllegalArgumentException - if there are duplicate vertices

Simplex

public Simplex(V... vertices)

Constructor.

Parameters:

vertices - the vertices of the Simplex.

Throws:

IllegalArgumentException - if there are duplicate vertices

Method Detail

toString

public String toString()

String representation.

Overrides:

toString in class AbstractCollection<V>

Returns:

the String representation of this Simplex

dimension

public int dimension()

Dimension of the Simplex.

Returns:

dimension of Simplex (one less than number of vertices)

isNeighbor

public boolean isNeighbor(Simplex<V> simplex)

True iff simplices are neighbors. Two simplices are neighbors if they are the same dimension and they share a facet.

Parameters:

simplex - the other Simplex

Returns:

true iff this Simplex is a neighbor of simplex

facets

public List<Set<V>> facets()

Report the facets of this Simplex. Each facet is a set of vertices .

Returns:

an Iterable for the facets of this Simplex

boundary

public static <V> Set<Set<V>> boundary(Set<? extends Simplex<V>> simplexSet)

Report the boundary of a Set of Simplices. The boundary is a Set of facets where each facet is a Set of vertices .

Returns:

an Iterator for the facets that make up the boundary

iterator

public Iterator<V> iterator()

Specified by:

iterator in interface Iterable<V>

Specified by:

iterator in interface Collection<V>

Specified by:

iterator in interface Set<V>

Specified by:

iterator in class AbstractCollection<V>

Returns:

Iterator for Simplex's vertices.

size

public int size()

Specified by:

size in interface Collection<V>

Specified by:

size in interface Set<V>

Specified by:

size in class AbstractCollection<V>

Returns:

the size (# of vertices) of this Simplex

hashCode

public int hashCode()

Specified by:

hashCode in interface Collection<V>

Specified by:

hashCode in interface Set<V>

Overrides:

hashCode in class AbstractSet<V>

Returns:

the hashCode of this Simplex

equals

public boolean equals(Object o)

We want to allow for different simplices that share the same vertex set.

Specified by:

equals in interface Collection<V>

Specified by:

equals in interface Set<V>

Overrides:

equals in class AbstractSet<V>

Returns:

true for equal Simplices