org.jgraph.util

Class Bezier

java.lang.Object

org.jgraph.util.Bezier

public class Bezier
extends java.lang.Object

Interpolates given points by a bezier curve. The first and the last two points are interpolated by a quadratic bezier curve; the other points by a cubic bezier curve. Let p a list of given points and b the calculated bezier points, then one get the whole curve by: sharedPath.moveTo(p[0]) sharedPath.quadTo(b[0].x, b[0].getY(), p[1].x, p[1].getY()); for(int i = 2; i < p.length - 1; i++ ) { Point b0 = b[2*i-3]; Point b1 = b[2*i-2]; sharedPath.curveTo(b0.x, b0.getY(), b1.x, b1.getY(), p[i].x, p[i].getY()); } sharedPath.quadTo(b[b.length-1].x, b[b.length-1].getY(), p[n - 1].x, p[n - 1].getY());

Constructor Summary

Constructors

Constructor and Description
Bezier(java.awt.geom.Point2D[] points) Creates a new Bezier curve.

Method Summary

Modifier and Type	Method and Description
java.awt.geom.Point2D	getPoint(int i) Returns the bezier points at position i.
int	getPointCount() Returns the number of bezier points.
java.awt.geom.Point2D[]	getPoints() Returns the calculated bezier points.

Methods inherited from class java.lang.Object

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

Constructor Detail

Bezier

public Bezier(java.awt.geom.Point2D[] points)

Creates a new Bezier curve.

Parameters:

points -

Method Detail

getPoints

public java.awt.geom.Point2D[] getPoints()

Returns the calculated bezier points.

Returns:

the calculated bezier points

getPointCount

public int getPointCount()

Returns the number of bezier points.

Returns:

number of bezier points

getPoint

public java.awt.geom.Point2D getPoint(int i)

Returns the bezier points at position i.

Parameters:

i -

Returns:

the bezier point at position i