/*******************************************************************************
* Copyright (c) 2006-2009 Nicolas Richeton.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors :
* Nicolas Richeton (nicolas.richeton@gmail.com) - initial API and implementation
*******************************************************************************/
package org.eclipse.nebula.cwt.animation.movement;
/**
* This is not an easing equation. This movement goes from f(0)=0 to f(t)=0 with
* intermediate values between -amplitude and amplitude.
*
* @author Nicolas Richeton
*
*/
public class SinusVariation extends AbstractMovement {
int variations = 1;
double amplitude;
public SinusVariation(int nb, double amplitude) {
super();
variations = nb;
this.amplitude = amplitude;
}
public double getValue(double step) {
return amplitude * Math.sin(step / duration * Math.PI * (double) variations);
}
}