com.alee.managers.animation.easing.Elastic Maven / Gradle / Ivy
The newest version!
/*
* Copyright © 2008 George McGinley Smith
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of the author nor the names of contributors may be used to endorse
* or promote products derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.alee.managers.animation.easing;
/**
* Elastic easing implementation.
*
* @author George McGinley Smith
* @author Mikle Garin
* @see How to use AnimationManager
* @see com.alee.managers.animation.AnimationManager
* @see jQuery Easing Plugin
*/
public abstract class Elastic extends AbstractEasing
{
@Override
public String getTitle ()
{
return "Elastic";
}
/**
* Accelerating from zero velocity.
*/
public static final class In extends Elastic
{
@Override
public String getTitle ()
{
return super.getTitle () + " In";
}
@Override
protected double calculateImpl ( final double start, final double distance, double current, final double total )
{
double a = distance;
if ( current == 0 )
{
return start;
}
if ( ( current /= total ) == 1 )
{
return start + distance;
}
final double p = total * 0.3;
final double s;
if ( a < Math.abs ( distance ) )
{
a = distance;
s = p / 4;
}
else
{
s = p / ( 2 * Math.PI ) * Math.asin ( distance / a );
}
return -( a * Math.pow ( 2, 10 * ( current -= 1 ) ) * Math.sin ( ( current * total - s ) * ( 2 * Math.PI ) / p ) ) + start;
}
}
/**
* Decelerating to zero velocity.
*/
public static final class Out extends Elastic
{
@Override
public String getTitle ()
{
return super.getTitle () + " Out";
}
@Override
protected double calculateImpl ( final double start, final double distance, double current, final double total )
{
double a = distance;
if ( current == 0 )
{
return start;
}
if ( ( current /= total ) == 1 )
{
return start + distance;
}
final double p = total * 0.3;
final double s;
if ( a < Math.abs ( distance ) )
{
a = distance;
s = p / 4;
}
else
{
s = p / ( 2 * Math.PI ) * Math.asin ( distance / a );
}
return a * Math.pow ( 2, -10 * current ) * Math.sin ( ( current * total - s ) * ( 2 * Math.PI ) / p ) + distance + start;
}
}
/**
* Accelerating until halfway, then decelerating.
*/
public static final class InOut extends Elastic
{
@Override
public String getTitle ()
{
return super.getTitle () + " InOut";
}
@Override
protected double calculateImpl ( final double start, final double distance, double current, final double total )
{
double a = distance;
if ( current == 0 )
{
return start;
}
if ( ( current /= total / 2 ) == 2 )
{
return start + distance;
}
final double p = total * ( 0.3 * 1.5 );
final double s;
if ( a < Math.abs ( distance ) )
{
a = distance;
s = p / 4;
}
else
{
s = p / ( 2 * Math.PI ) * Math.asin ( distance / a );
}
if ( current < 1 )
{
return -.5 * ( a * Math.pow ( 2, 10 * ( current -= 1 ) ) * Math.sin ( ( current * total - s ) * ( 2 * Math.PI ) / p ) ) +
start;
}
return a * Math.pow ( 2, -10 * ( current -= 1 ) ) * Math.sin ( ( current * total - s ) * ( 2 * Math.PI ) / p ) * 0.5 +
distance + start;
}
}
}