com.vividsolutions.jts.triangulate

Class ConstraintVertex

java.lang.Object

com.vividsolutions.jts.triangulate.quadedge.Vertex

com.vividsolutions.jts.triangulate.ConstraintVertex

public class ConstraintVertex
extends Vertex

A vertex in a Constrained Delaunay Triangulation. The vertex may or may not lie on a constraint. If it does it may carry extra information about the original constraint.

Author:

Martin Davis

Field Summary

Fields inherited from class com.vividsolutions.jts.triangulate.quadedge.Vertex

BEHIND, BETWEEN, BEYOND, DESTINATION, LEFT, ORIGIN, RIGHT

Constructor Summary

Constructors

Constructor and Description
ConstraintVertex(Coordinate p) Creates a new constraint vertex

Method Summary

Methods

Modifier and Type	Method and Description
Object	getConstraint() Gets the external constraint object
boolean	isOnConstraint() Tests whether this vertex lies on a constraint.
protected void	merge(ConstraintVertex other) Merges the constraint data in the vertex other into this vertex.
void	setConstraint(Object constraint) Sets the external constraint information
void	setOnConstraint(boolean isOnConstraint) Sets whether this vertex lies on a constraint.

Methods inherited from class com.vividsolutions.jts.triangulate.quadedge.Vertex

circleCenter, circumRadiusRatio, classify, equals, equals, getCoordinate, getX, getY, getZ, interpolateZ, interpolateZ, interpolateZValue, isCCW, isInCircle, leftOf, midPoint, rightOf, setZ, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

ConstraintVertex

public ConstraintVertex(Coordinate p)

Creates a new constraint vertex

Parameters:

p - the location of the vertex

Method Detail

setOnConstraint

public void setOnConstraint(boolean isOnConstraint)

Sets whether this vertex lies on a constraint.

Parameters:

isOnConstraint - true if this vertex lies on a constraint

isOnConstraint

public boolean isOnConstraint()

Tests whether this vertex lies on a constraint.

Returns:

true if the vertex lies on a constraint

setConstraint

public void setConstraint(Object constraint)

Sets the external constraint information

Parameters:

constraint - an object which carries information about the constraint this vertex lies on

getConstraint

public Object getConstraint()

Gets the external constraint object

Returns:

the external constraint object

merge

protected void merge(ConstraintVertex other)

Merges the constraint data in the vertex other into this vertex. This method is called when an inserted vertex is very close to an existing vertex in the triangulation.

Parameters:

other - the constraint vertex to merge