| //////////////////////////////////////////////////////////////////////////////// |
| // |
| // 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 mx.effects.easing |
| { |
| |
| /** |
| * The Spark effects provided as of Flex 4 use classes which implement the |
| * IEaser interface instead of the easing functions in classes like Quintic for |
| * the earlier Flex 3 effects. To achieve the same functionality of Quintic, |
| * create a Power instance with an <code>exponent</code> of 5 and set the |
| * <code>easeInFraction</code> appropriately to get the desired result. |
| */ |
| [Alternative(replacement="spark.effects.easing.Power", since="4.0")] |
| |
| /** |
| * The Quintic class defines three easing functions to implement |
| * motion with Flex effect classes. The acceleration of motion for a Quintic easing |
| * equation is greater than for a Quadratic, Cubic, or Quartic easing equation. |
| * |
| * For more information, see http://www.robertpenner.com/profmx. |
| * |
| * @langversion 3.0 |
| * @playerversion Flash 9 |
| * @playerversion AIR 1.1 |
| * @productversion Flex 3 |
| */ |
| public class Quintic |
| { |
| include "../../core/Version.as"; |
| |
| //-------------------------------------------------------------------------- |
| // |
| // Class methods |
| // |
| //-------------------------------------------------------------------------- |
| |
| /** |
| * The <code>easeIn()</code> method starts motion from zero velocity, |
| * and then accelerates motion as it executes. |
| * |
| * @param t Specifies time. |
| * |
| * @param b Specifies the initial position of a component. |
| * |
| * @param c Specifies the total change in position of the component. |
| * |
| * @param d Specifies the duration of the effect, in milliseconds. |
| * |
| * @return Number corresponding to the position of the component. |
| * |
| * @langversion 3.0 |
| * @playerversion Flash 9 |
| * @playerversion AIR 1.1 |
| * @productversion Flex 3 |
| */ |
| public static function easeIn(t:Number, b:Number, |
| c:Number, d:Number):Number |
| { |
| return c * (t /= d) * t * t * t * t + b; |
| } |
| |
| /** |
| * The <code>easeOut()</code> method starts motion fast, |
| * and then decelerates motion to a zero velocity as it executes. |
| * |
| * @param t Specifies time. |
| * |
| * @param b Specifies the initial position of a component. |
| * |
| * @param c Specifies the total change in position of the component. |
| * |
| * @param d Specifies the duration of the effect, in milliseconds. |
| * |
| * @return Number corresponding to the position of the component. |
| * |
| * @langversion 3.0 |
| * @playerversion Flash 9 |
| * @playerversion AIR 1.1 |
| * @productversion Flex 3 |
| */ |
| public static function easeOut(t:Number, b:Number, |
| c:Number, d:Number):Number |
| { |
| return c * ((t = t / d - 1) * t * t * t * t + 1) + b; |
| } |
| |
| /** |
| * The <code>easeInOut()</code> method combines the motion |
| * of the <code>easeIn()</code> and <code>easeOut()</code> methods |
| * to start the motion from a zero velocity, accelerate motion, |
| * then decelerate to a zero velocity. |
| * |
| * @param t Specifies time. |
| * |
| * @param b Specifies the initial position of a component. |
| * |
| * @param c Specifies the total change in position of the component. |
| * |
| * @param d Specifies the duration of the effect, in milliseconds. |
| * |
| * @return Number corresponding to the position of the component. |
| * |
| * @langversion 3.0 |
| * @playerversion Flash 9 |
| * @playerversion AIR 1.1 |
| * @productversion Flex 3 |
| */ |
| public static function easeInOut(t:Number, b:Number, |
| c:Number, d:Number):Number |
| { |
| if ((t /= d / 2) < 1) |
| return c / 2 * t * t * t * t * t + b; |
| |
| return c / 2 * ((t -= 2) * t * t * t * t + 2) + b; |
| } |
| } |
| |
| } |