com.revolsys.jts.triangulate

Class Segment

java.lang.Object

com.revolsys.jts.triangulate.Segment

public class Segment
extends Object

Models a constraint segment in a triangulation. A constraint segment is an oriented straight line segment between a start point and an end point.

Author:

David Skea, Martin Davis

Constructor Summary

Constructors

Constructor and Description
Segment(double x1, double y1, double z1, double x2, double y2, double z2) Creates a new instance for the given ordinates.
Segment(double x1, double y1, double z1, double x2, double y2, double z2, Object data) Creates a new instance for the given ordinates, with associated external data.
Segment(Point p0, Point p1) Creates a new instance for the given points.
Segment(Point p0, Point p1, Object data) Creates a new instance for the given points, with associated external data.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equalsTopo(Segment s) Determines whether two segments are topologically equal.
Object	getData() Gets the external data associated with this segment
Point	getEnd() Gets the end coordinate of the segment
double	getEndX() Gets the end X ordinate of the segment
double	getEndY() Gets the end Y ordinate of the segment
double	getEndZ() Gets the end Z ordinate of the segment
LineSegment	getLineSegment() Gets a LineSegmentDouble modelling this segment.
Point	getStart() Gets the start coordinate of the segment
double	getStartX() Gets the start X ordinate of the segment
double	getStartY() Gets the start Y ordinate of the segment
double	getStartZ() Gets the start Z ordinate of the segment
Point	intersection(Segment s) Computes the intersection point between this segment and another one.
void	setData(Object data) Sets the external data to be associated with this segment
String	toString() Computes a string representation of this segment.

Methods inherited from class java.lang.Object

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

Constructor Detail

Segment

public Segment(double x1,
       double y1,
       double z1,
       double x2,
       double y2,
       double z2)

Creates a new instance for the given ordinates.

Segment

public Segment(double x1,
       double y1,
       double z1,
       double x2,
       double y2,
       double z2,
       Object data)

Creates a new instance for the given ordinates, with associated external data.

Segment

public Segment(Point p0,
       Point p1)

Creates a new instance for the given points.

Parameters:

p0 - the start point

p1 - the end point

Segment

public Segment(Point p0,
       Point p1,
       Object data)

Creates a new instance for the given points, with associated external data.

Parameters:

p0 - the start point

p1 - the end point

data - an external data object

Method Detail

equalsTopo

public boolean equalsTopo(Segment s)

Determines whether two segments are topologically equal. I.e. equal up to orientation.

Parameters:

s - a segment

Returns:

true if the segments are topologically equal

getData

public Object getData()

Gets the external data associated with this segment

Returns:

a data object

getEnd

public Point getEnd()

Gets the end coordinate of the segment

Returns:

a Coordinate

getEndX

public double getEndX()

Gets the end X ordinate of the segment

Returns:

the X ordinate value

getEndY

public double getEndY()

Gets the end Y ordinate of the segment

Returns:

the Y ordinate value

getEndZ

public double getEndZ()

Gets the end Z ordinate of the segment

Returns:

the Z ordinate value

getLineSegment

public LineSegment getLineSegment()

Gets a LineSegmentDouble modelling this segment.

Returns:

a LineSegmentDouble

getStart

public Point getStart()

Gets the start coordinate of the segment

Returns:

a Coordinate

getStartX

public double getStartX()

Gets the start X ordinate of the segment

Returns:

the X ordinate value

getStartY

public double getStartY()

Gets the start Y ordinate of the segment

Returns:

the Y ordinate value

getStartZ

public double getStartZ()

Gets the start Z ordinate of the segment

Returns:

the Z ordinate value

intersection

public Point intersection(Segment s)

Computes the intersection point between this segment and another one.

Parameters:

s - a segment

Returns:

the intersection point, or null if there is none

setData

public void setData(Object data)

Sets the external data to be associated with this segment

Parameters:

data - a data object

toString

public String toString()

Computes a string representation of this segment.

Overrides:

toString in class Object

Returns:

a string