org.vectomatic.common.model.geometry
Class Segment

java.lang.Object
  org.vectomatic.common.model.geometry.Segment

All Implemented Interfaces:

com.google.gwt.user.client.rpc.IsSerializable

Direct Known Subclasses:

BezierSegment, LineSegment

public abstract class Segment
extends Object
implements com.google.gwt.user.client.rpc.IsSerializable

Base class for path segments (line segment, bezier spline segments)

Author:

Lukas Laag

Field Summary

protected BoundingBox	_bbox
protected Point[]	_pts

Constructor Summary

Segment()

Segment(Point[] pts)
Constructor

Segment(Segment segment)
Copy constuctor

Method Summary

abstract Segment	clone()
BoundingBox	getBoundingBox() Gets the bounding box of the segment
Point	getEndPoint() Return the segment last point
Point	getStartPoint() Returns the segment first point
Point[]	getVertices()
abstract void	nearestPointOnSegment(Point p, Point dest) Returns the closest point on the segment to the specified point
float	squaredDistanceToPoint(Point p) Returns the squared distance from an arbitrary point p to the nearest point on the segment

Methods inherited from class java.lang.Object

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

Field Detail

_pts

protected Point[] _pts

_bbox

protected BoundingBox _bbox

Constructor Detail

Segment

public Segment()

Segment

public Segment(Point[] pts)

Constructor

Parameters:

pts - An array of points defining the segment

Segment

public Segment(Segment segment)

Copy constuctor

Parameters:

segment - A segment to duplicate

Method Detail

getStartPoint

public Point getStartPoint()

Returns the segment first point

Returns:

getEndPoint

public Point getEndPoint()

Return the segment last point

Returns:

getBoundingBox

public BoundingBox getBoundingBox()

Gets the bounding box of the segment

Returns:

the bounding box of the segment

squaredDistanceToPoint

public float squaredDistanceToPoint(Point p)

Returns the squared distance from an arbitrary point p to the nearest point on the segment

Parameters:

p - An arbitrary point p

Returns:

The squared distance from the closest point on the segment to p

nearestPointOnSegment

public abstract void nearestPointOnSegment(Point p,
                                           Point dest)

Returns the closest point on the segment to the specified point

Parameters:

p - An arbitrary point p

dest - The closest point on the segment to p

clone

public abstract Segment clone()

Overrides:

clone in class Object

getVertices

public Point[] getVertices()