/**
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* Tencent is pleased to support the open source community by making QMUI_iOS available.
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* Copyright (C) 2016-2021 THL A29 Limited, a Tencent company. All rights reserved.
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* Licensed under the MIT License (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
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* http://opensource.org/licenses/MIT
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* 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.
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*/
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//
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// QMUIAnimationHelper.h
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// WeRead
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//
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// Created by zhoonchen on 2018/9/3.
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//
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#import <UIKit/UIKit.h>
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#import "QMUIEasings.h"
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@interface QMUIAnimationHelper : NSObject
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typedef NS_ENUM(NSInteger, QMUIAnimationEasings) {
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QMUIAnimationEasingsLinear,
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QMUIAnimationEasingsEaseInSine,
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QMUIAnimationEasingsEaseOutSine,
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QMUIAnimationEasingsEaseInOutSine,
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QMUIAnimationEasingsEaseInQuad,
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QMUIAnimationEasingsEaseOutQuad,
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QMUIAnimationEasingsEaseInOutQuad,
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QMUIAnimationEasingsEaseInCubic,
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QMUIAnimationEasingsEaseOutCubic,
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QMUIAnimationEasingsEaseInOutCubic,
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QMUIAnimationEasingsEaseInQuart,
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QMUIAnimationEasingsEaseOutQuart,
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QMUIAnimationEasingsEaseInOutQuart,
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QMUIAnimationEasingsEaseInQuint,
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QMUIAnimationEasingsEaseOutQuint,
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QMUIAnimationEasingsEaseInOutQuint,
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QMUIAnimationEasingsEaseInExpo,
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QMUIAnimationEasingsEaseOutExpo,
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QMUIAnimationEasingsEaseInOutExpo,
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QMUIAnimationEasingsEaseInCirc,
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QMUIAnimationEasingsEaseOutCirc,
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QMUIAnimationEasingsEaseInOutCirc,
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QMUIAnimationEasingsEaseInBack,
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QMUIAnimationEasingsEaseOutBack,
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QMUIAnimationEasingsEaseInOutBack,
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QMUIAnimationEasingsEaseInElastic,
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QMUIAnimationEasingsEaseOutElastic,
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QMUIAnimationEasingsEaseInOutElastic,
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QMUIAnimationEasingsEaseInBounce,
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QMUIAnimationEasingsEaseOutBounce,
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QMUIAnimationEasingsEaseInOutBounce,
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QMUIAnimationEasingsSpring, // 自定义任意弹簧曲线
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QMUIAnimationEasingsSpringKeyboard // 系统键盘动画曲线
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};
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/**
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* 动画插值器
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* 根据给定的 easing 曲线，计算出初始值和结束值在当前的时间 time 对应的值。value 目前现在支持 NSNumber、UIColor 以及 NSValue 类型的 CGPoint、CGSize、CGRect、CGAffineTransform、UIEdgeInsets
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* @param fromValue 初始值
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* @param toValue 结束值
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* @param time 当前帧时间
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* @param easing 曲线，见`QMUIAnimationEasings`
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*/
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+ (id)interpolateFromValue:(id)fromValue
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toValue:(id)toValue
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time:(CGFloat)time
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easing:(QMUIAnimationEasings)easing;
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/**
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* 动画插值器，支持弹簧参数
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* mass|damping|stiffness|initialVelocity 仅在 QMUIAnimationEasingsSpring 的时候才生效
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*/
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+ (id)interpolateSpringFromValue:(id)fromValue
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toValue:(id)toValue
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time:(CGFloat)time
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mass:(CGFloat)mass
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damping:(CGFloat)damping
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stiffness:(CGFloat)stiffness
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initialVelocity:(CGFloat)initialVelocity
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easing:(QMUIAnimationEasings)easing;
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/**
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类似系统 UIScrollView 在拖拽到内容尽头时会越拖越难拖的效果。
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@param fromValue 初始值，一般为 0。
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@param toValue 目标值，也即你希望拖拽到的极限距离。
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@param time 当前拖拽距离相对于极限距离的百分比，0 表示在 fromValue，1 表示拖拽到与极限距离相同的大小，大于1表示拖拽得比极限距离还远。
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@param coeff 取值范围-1~+∞。值越大，拖拽的初期越容易拖动。例如 0.1 表示从头到尾都很难拖动，9表示一开始稍微拖一下就可以动很长距离（也可以理解为只需要很短的拖拽动作就可以很快接近极限距离）。-1 表示用默认的 0.55，也即系统的 UIScrollView 的系数。
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@return 返回当前 time 对应的移动距离，返回值大于等于 fromValue，小于 toValue（只会无限接近，不可能等于）。
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*/
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+ (CGFloat)bounceFromValue:(CGFloat)fromValue
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toValue:(CGFloat)toValue
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time:(CGFloat)time
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coeff:(CGFloat)coeff;
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@end
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