jdsl.geomobj.api
Interface Segment2D

All Superinterfaces:

Curve2D, GeomObject, GeomObject2D, LinearCurve2D, OpenCurve2D

All Known Implementing Classes:

IntSegment2D, RealSegment2D, RatSegment2D

public interface Segment2D

extends LinearCurve2D

This interface describes a two-dimensional segment. It only provides methods that return the endpoints of the segment. Geometric tests should be performed through methods of GeomTester2D.

Version:

$Id: Segment2D.java,v 1.1 2000/03/06 21:30:44 lv Exp $

Author:

Luca Vismara (lv)

Inner classes inherited from class jdsl.geomobj.api.GeomObject2D

GeomObject2D.NoneGeomObject2D

Fields inherited from interface jdsl.geomobj.api.GeomObject2D

NONE

Method Summary

Point2D	bottomPoint()
Point2D	leftPoint()
Point2D	rightPoint()
Line2D	supportingLine()
Point2D	topPoint()

Methods inherited from interface jdsl.geomobj.api.LinearCurve2D

direction, isDecreasing, isHorizontal, isIncreasing, isVertical

Methods inherited from interface jdsl.geomobj.api.OpenCurve2D

points

Methods inherited from interface jdsl.geomobj.api.GeomObject

arithmeticType, dim

Method Detail

bottomPoint

public Point2D bottomPoint()

Returns:

the bottom endpoint of this; any endpoint if this is horizontal

topPoint

public Point2D topPoint()

Returns:

the top endpoint of this; any endpoint if this is horizontal

leftPoint

public Point2D leftPoint()

Returns:

the leftmost endpoint of this; any endpoint if this is vertical

rightPoint

public Point2D rightPoint()

Returns:

the rightmost endpoint of this; any endpoint if this is vertical

supportingLine

public Line2D supportingLine()

Returns:

the line passing through the endpoints and with the same direction of this