Package org.jgraph.util
Class Bezier
- java.lang.Object
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- org.jgraph.util.Bezier
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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());
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Constructor Summary
Constructors Constructor Description Bezier(java.awt.geom.Point2D[] points)
Creates a new Bezier curve.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method 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.
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Method Detail
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getPoints
public java.awt.geom.Point2D[] getPoints()
Returns the calculated bezier points.- Returns:
- the calculated bezier points
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getPointCount
public int getPointCount()
Returns the number of bezier points.- Returns:
- number of bezier points
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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
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