org.wilmascope.view
Class SplineMethods

java.lang.Object
  org.wilmascope.view.SplineMethods

public class SplineMethods
extends java.lang.Object

Author:

dwyer Methods for drawing spline curves

Constructor Summary

SplineMethods()

Method Summary

static java.awt.geom.Point2D.Float	evalBezier(java.awt.geom.Point2D.Float[] arr, float t) evaluates a bezier defined by the control polygon which points are given in the array at the value t returns the point on the curve (which is also returned in the first point in the input array, the line from that point to the second point in the array gives a tangent vector)
static java.awt.geom.Point2D.Float	interpolate(java.awt.geom.Point2D.Float p0, java.awt.geom.Point2D.Float p1, float t) This method and the next together implement The de-Casteljau Algorithm.

Methods inherited from class java.lang.Object

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

Constructor Detail

SplineMethods

public SplineMethods()

Method Detail

interpolate

public static java.awt.geom.Point2D.Float interpolate(java.awt.geom.Point2D.Float p0,
                                                      java.awt.geom.Point2D.Float p1,
                                                      float t)

This method and the next together implement The de-Casteljau Algorithm. I've modelled them on the example code at: this site Thanks!

Returns:

the linear interpolation of two points

evalBezier

public static java.awt.geom.Point2D.Float evalBezier(java.awt.geom.Point2D.Float[] arr,
                                                     float t)

evaluates a bezier defined by the control polygon which points are given in the array at the value t returns the point on the curve (which is also returned in the first point in the input array, the line from that point to the second point in the array gives a tangent vector)