Package eu.woolplatform.utils.geom

Class LineSegment

java.lang.Object

eu.woolplatform.utils.geom.LineSegment

public class LineSegment
extends Object

This class defines a line segment. It consists of a start point and end point.

Constructor Summary

Constructors

Constructor	Description
LineSegment(double startX, double startY, double endX, double endY)	Constructs a new line segment.
LineSegment(Point start, Point end)	Constructs a new line segment.
LineSegment(Point start, Vector vector)	Constructs a new line segment.

Method Summary

Modifier and Type	Method	Description
Point	getEnd()	Returns the end point.
double	getLength()	Returns the length of this line segment.
Point	getStart()	Returns the start point.
void	offset(double dx, double dy)	Moves this line segment by the specified offset.
void	rotate(double angle)	Rotates this line segment by the specified number of degrees around the start point.
void	setEnd(Point end)	Sets the end point.
void	setStart(Point start)	Sets the start point.
String	toString()
Vector	toVector()	Returns the vector from the start point to the end point.

Methods inherited from class java.lang.Object

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

Constructor Detail

LineSegment

public LineSegment(Point start,
                   Point end)

Constructs a new line segment.

Parameters:

start - the start point

end - the end point

LineSegment

public LineSegment(double startX,
                   double startY,
                   double endX,
                   double endY)

Constructs a new line segment.

Parameters:

startX - the X position of the start point

startY - the Y position of the start point

endX - the X position of the end point

endY - the Y position of the end point

LineSegment

public LineSegment(Point start,
                   Vector vector)

Constructs a new line segment.

Parameters:

start - the start point

vector - the vector from the start point to the end point

Method Detail

getStart

public Point getStart()

Returns the start point.

Returns:

the start point

setStart

public void setStart(Point start)

Sets the start point.

Parameters:

start - the start point

getEnd

public Point getEnd()

Returns the end point.

Returns:

the end point

setEnd

public void setEnd(Point end)

Sets the end point.

Parameters:

end - the end point

toVector

public Vector toVector()

Returns the vector from the start point to the end point.

Returns:

the vector from the start point to the end point

getLength

public double getLength()

Returns the length of this line segment.

Returns:

the length of this line segment

rotate

public void rotate(double angle)

Rotates this line segment by the specified number of degrees around the start point.

Parameters:

angle - the angle in degrees

offset

public void offset(double dx,
                   double dy)

Moves this line segment by the specified offset.

Parameters:

dx - the offset along the X axis

dy - the offset along the Y axis

toString

public String toString()

Overrides:

toString in class Object