math.geom2d.line
Class LineSegment2D

java.lang.Object
  math.geom2d.line.StraightObject2D
      math.geom2d.line.LineArc2D
          math.geom2d.line.LineSegment2D

All Implemented Interfaces:

java.awt.Shape, ContinuousCurve2D, ContinuousOrientedCurve2D, Curve2D, OrientedCurve2D, SmoothCurve2D, SmoothOrientedCurve2D, Shape2D

public class LineSegment2D
extends LineArc2D

Straight Edge defined by two points.

Field Summary

Fields inherited from class math.geom2d.line.LineArc2D

t0, t1

Fields inherited from class math.geom2d.line.StraightObject2D

dx, dy, x0, y0

Fields inherited from interface math.geom2d.curve.ContinuousCurve2D

CIRCLE, CLOSED_EDGE, LOOP, OPEN_EDGE

Fields inherited from interface math.geom2d.Shape2D

ACCURACY, defaultClipWindow, EMPTY_SET

Constructor Summary

LineSegment2D(double x1, double y1, double x2, double y2)
Define a new Edge with two extremities.

LineSegment2D(java.awt.geom.Point2D point1, java.awt.geom.Point2D point2)
Define a new Edge with two extremities.

Method Summary

static double	getEdgeAngle(LineSegment2D edge1, LineSegment2D edge2) Returns angle between two edges sharing one vertex.
StraightLine2D	getMedian() Return the median of the edge, that is the locus of points located at equal distance of each vertex.
static StraightLine2D	getMedian(LineSegment2D edge)
Point2D	getOtherPoint(Point2D point) Return the opposite vertex of the edge.
LineSegment2D	getReverseCurve() Returns the LineSegment which start from last point of this line segment, and which ends at the fist point of this last segment.
void	setLineSegment(double x1, double y1, double x2, double y2)
void	setLineSegment(Point2D p1, Point2D p2)
LineSegment2D	transform(AffineTransform2D trans) Transforms the curve by an affine transform.

Methods inherited from class math.geom2d.line.LineArc2D

appendPath, clip, contains, contains, equals, equals, getAsPolyline, getBoundingBox, getBounds, getBounds2D, getContinuousCurves, getCurvature, getDistance, getDistance, getFirstPoint, getInnerPath, getLastPoint, getLength, getPathIterator, getPathIterator, getPoint, getPoint, getPoint1, getPoint2, getPosition, getSmoothPieces, getSubCurve, getT0, getT1, getTangent, getWindingAngle, getX1, getX2, getY1, getY2, intersects, intersects, isBounded, isInside, project, toString

Methods inherited from class math.geom2d.line.StraightObject2D

contains, contains, getCartesianEquation, getDistance, getHorizontalAngle, getIntersection, getIntersection, getIntersections, getOrigin, getParallel, getParametric, getPerpendicular, getPolarCoefficients, getPositionOnLine, getPositionOnLine, getProjectedPoint, getProjectedPoint, getSignedDistance, getSignedDistance, getSignedPolarCoefficients, getSupportLine, getSymmetric, getSymmetric, getVector, isClosed, isColinear, isColinear, isInside, isParallel, isParallel

Methods inherited from class java.lang.Object

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

Methods inherited from interface math.geom2d.curve.ContinuousCurve2D

isClosed

Methods inherited from interface math.geom2d.curve.OrientedCurve2D

getSignedDistance, getSignedDistance

Methods inherited from interface math.geom2d.curve.Curve2D

getIntersections

Methods inherited from interface java.awt.Shape

contains, contains

Constructor Detail

LineSegment2D

public LineSegment2D(java.awt.geom.Point2D point1,
                     java.awt.geom.Point2D point2)

Define a new Edge with two extremities.

LineSegment2D

public LineSegment2D(double x1,
                     double y1,
                     double x2,
                     double y2)

Define a new Edge with two extremities.

Method Detail

getMedian

public static final StraightLine2D getMedian(LineSegment2D edge)

getEdgeAngle

public static final double getEdgeAngle(LineSegment2D edge1,
                                        LineSegment2D edge2)

Returns angle between two edges sharing one vertex.

getOtherPoint

public Point2D getOtherPoint(Point2D point)

Return the opposite vertex of the edge.

Parameters:

point - : one of the vertices of the edge

Returns:

the other vertex

setLineSegment

public void setLineSegment(Point2D p1,
                           Point2D p2)

setLineSegment

public void setLineSegment(double x1,
                           double y1,
                           double x2,
                           double y2)

getReverseCurve

public LineSegment2D getReverseCurve()

Returns the LineSegment which start from last point of this line segment, and which ends at the fist point of this last segment.

Specified by:

getReverseCurve in interface ContinuousCurve2D

Specified by:

getReverseCurve in interface ContinuousOrientedCurve2D

Specified by:

getReverseCurve in interface Curve2D

Specified by:

getReverseCurve in interface OrientedCurve2D

Specified by:

getReverseCurve in interface SmoothCurve2D

Specified by:

getReverseCurve in interface SmoothOrientedCurve2D

Overrides:

getReverseCurve in class LineArc2D

getMedian

public StraightLine2D getMedian()

Return the median of the edge, that is the locus of points located at equal distance of each vertex.

transform

public LineSegment2D transform(AffineTransform2D trans)

Description copied from interface: Curve2D

Transforms the curve by an affine transform. The result is an instance of Curve2D.

Specified by:

transform in interface ContinuousCurve2D

Specified by:

transform in interface ContinuousOrientedCurve2D

Specified by:

transform in interface Curve2D

Specified by:

transform in interface OrientedCurve2D

Specified by:

transform in interface SmoothCurve2D

Specified by:

transform in interface SmoothOrientedCurve2D

Specified by:

transform in interface Shape2D

Overrides:

transform in class LineArc2D

Parameters:

trans - an affine transform

Returns:

the transformed shape