// COPYRIGHT (C) Tom. ALL RIGHTS RESERVED.
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// THE AntdUI PROJECT IS AN WINFORM LIBRARY LICENSED UNDER THE Apache-2.0 License.
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// LICENSED UNDER THE Apache License, VERSION 2.0 (THE "License")
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// YOU MAY NOT USE THIS FILE EXCEPT IN COMPLIANCE WITH THE License.
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// YOU MAY OBTAIN A COPY OF THE LICENSE AT
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING, SOFTWARE
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// DISTRIBUTED UNDER THE LICENSE IS DISTRIBUTED ON AN "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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// SEE THE LICENSE FOR THE SPECIFIC LANGUAGE GOVERNING PERMISSIONS AND
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// LIMITATIONS UNDER THE License.
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// GITEE: https://gitee.com/antdui/AntdUI
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// GITHUB: https://github.com/AntdUI/AntdUI
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// CSDN: https://blog.csdn.net/v_132
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// QQ: 17379620
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using System;
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namespace AntdUI
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{
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/// <summary>
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/// 动画
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/// </summary>
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public static class Animation
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{
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/// <summary>
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/// 返回总帧数
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/// </summary>
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/// <param name="interval">动画间隔</param>
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/// <param name="lastTime">动画时长（ms）</param>
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/// <returns>动画总帧数</returns>
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public static int TotalFrames(int interval, int lastTime)
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{
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return lastTime % interval > 0 ? lastTime / interval + 1 : lastTime / interval;
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}
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/// <summary>
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/// 执行动画
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/// </summary>
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/// <param name="currentFrames">当前帧</param>
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/// <param name="totalFrames">总帧</param>
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/// <param name="maxValue">最大值</param>
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/// <param name="type">动画类型</param>
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/// <returns>当前数值</returns>
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public static float Animate(double currentFrames, double totalFrames, float maxValue, AnimationType type)
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{
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return Animate(currentFrames / totalFrames, maxValue, type);
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}
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/// <summary>
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/// 执行动画
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/// </summary>
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/// <param name="progress">帧进度</param>
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/// <param name="maxValue">最大值</param>
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/// <param name="type">动画类型</param>
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/// <returns>当前数值</returns>
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public static float Animate(double progress, float maxValue, AnimationType type)
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{
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return (float)(maxValue * type.CalculateValue(progress));
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}
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public static double Animate(double progress, double maxValue, AnimationType type)
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{
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return maxValue * type.CalculateValue(progress);
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}
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internal static double CalculateValue(this AnimationType type, double v)
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{
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switch (type)
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{
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case AnimationType.Liner:
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return v;
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case AnimationType.Ease:
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return Math.Sqrt(v);
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case AnimationType.Ball:
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return Math.Sqrt(1.0 - Math.Pow(v - 1, 2));
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case AnimationType.Resilience:
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return -10.0 / 6.0 * v * (v - 1.6);
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default: return 1;
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}
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}
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}
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/// <summary>
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/// 动画类型
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/// </summary>
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public enum AnimationType
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{
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/// <summary>
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/// 以同一速度移动
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/// </summary>
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Liner,
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/// <summary>
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/// 逐渐减速
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/// </summary>
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Ease,
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/// <summary>
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/// 加速并减速
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/// </summary>
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Ball,
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/// <summary>
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/// 弹性一样的动画
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/// </summary>
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Resilience
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}
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}
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