tweenjs/tween.js

Help add new easing functions

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#507 创建于 2019年11月6日

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 (5 评论) (0 反应) (0 负责人)TypeScript (9,450 star) (1,458 fork)batch import
Featuregood first issuehelp wanted

描述

We could always use more easing functions.

An easing function is single-variable function that maps values in the range [0, 1] to a numeric value. Generally, we require that f(0) = 0 and f(1) = 1, but otherwise there are no constraints.

If you want to help out feel free to submit a PR, and don't worry about code style. If you need help I can provide a template for your PR.

Tests aren't required for easing functions, but if you want to you can add the new easing function to the graphs example.

贡献者指南

技术栈
typescriptjavascript
领域
frontend
议题类型
feature
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
2
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
under 1 hour
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
fresh
清晰度议题是否清楚说明期望改动、验收标准和下一步。
clear
前置要求
basic mathJavaScript/TypeScript
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
85
研究方向
Look at existing easing functions in the source code (e.g., src/Easing.ts) to understand the pattern. Implement a new function that takes a number t (0 to 1) and returns a number. Ensure f(0)=0 and f(1)=1. The maintainer offers a template, so feel free to ask for help.