/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to you under the Apache License,
* Version 2.0 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package gwt.mosaic.client.effects.easing;
/**
* Quartic easing operation.
*/
public class Quartic implements Easing {
public double easeIn(double time, double begin, double change,
double duration) {
return change * (time /= duration) * time * time * time + begin;
}
public double easeOut(double time, double begin, double change,
double duration) {
return -change
* ((time = time / duration - 1) * time * time * time - 1)
+ begin;
}
public double easeInOut(double time, double begin, double change,
double duration) {
if ((time /= duration / 2f) < 1) {
return change / 2f * time * time * time * time + begin;
}
return -change / 2f * ((time -= 2) * time * time * time - 2) + begin;
}
}
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