├── .eslintrc.js ├── .github └── workflows │ ├── check.yml │ └── publish.yml ├── .gitignore ├── CHANGELOG.md ├── LICENSE ├── README.md ├── doc └── example.gif ├── package.json ├── release.config.js ├── src ├── BallIndicator.tsx ├── DotIndicator.tsx ├── index.ts └── utils │ ├── array.ts │ ├── easing.ts │ └── get-loop-interpolate-range.ts └── tsconfig.json /.eslintrc.js: -------------------------------------------------------------------------------- 1 | module.exports = { 2 | extends: ["@ken0x0a/eslint-config"], 3 | rules: { 4 | camelcase: 0, 5 | "react/require-default-props": 0, 6 | "react/react-in-jsx-scope": 0, 7 | "@typescript-eslint/naming-convention": 0, 8 | }, 9 | }; 10 | -------------------------------------------------------------------------------- /.github/workflows/check.yml: -------------------------------------------------------------------------------- 1 | name: PR Check 2 | 3 | on: 4 | pull_request: 5 | types: [opened, synchronize, reopened] 6 | branches: [main] 7 | 8 | jobs: 9 | typecheck: 10 | name: Type check 11 | runs-on: ubuntu-latest 12 | steps: 13 | - uses: actions/checkout@v3 14 | - uses: actions/setup-node@v3 15 | with: 16 | node-version: 16 17 | - name: Get yarn cache directory path 18 | id: yarn-cache-dir-path 19 | run: echo "::set-output name=dir::$(yarn cache dir)" 20 | 21 | - uses: actions/cache@v3 22 | id: yarn-cache # use this to check for `cache-hit` (`steps.yarn-cache.outputs.cache-hit != 'true'`) 23 | with: 24 | path: ${{ steps.yarn-cache-dir-path.outputs.dir }} 25 | key: ${{ runner.os }}-yarn-${{ hashFiles('**/package.json') }} 26 | restore-keys: | 27 | ${{ runner.os }}-yarn- 28 | 29 | - name: Install dependencies 30 | run: yarn install 31 | 32 | - name: Type Check 33 | run: yarn run type-check 34 | 35 | lint: 36 | name: Lint 37 | runs-on: ubuntu-latest 38 | steps: 39 | - uses: actions/checkout@v3 40 | - uses: actions/setup-node@v3 41 | with: 42 | node-version: 16 43 | - name: Get yarn cache directory path 44 | id: yarn-cache-dir-path 45 | run: echo "::set-output name=dir::$(yarn cache dir)" 46 | 47 | - uses: actions/cache@v3 48 | id: yarn-cache # use this to check for `cache-hit` (`steps.yarn-cache.outputs.cache-hit != 'true'`) 49 | with: 50 | path: ${{ steps.yarn-cache-dir-path.outputs.dir }} 51 | key: ${{ runner.os }}-yarn-${{ hashFiles('**/package.json') }} 52 | restore-keys: | 53 | ${{ runner.os }}-yarn- 54 | 55 | - name: Install dependencies 56 | run: yarn install 57 | 58 | - name: Lint 59 | run: yarn run lint 60 | -------------------------------------------------------------------------------- /.github/workflows/publish.yml: -------------------------------------------------------------------------------- 1 | name: Publish 2 | 3 | on: 4 | push: 5 | branches: [main] 6 | 7 | jobs: 8 | typecheck: 9 | name: Type check 10 | runs-on: ubuntu-latest 11 | steps: 12 | - uses: actions/checkout@v3 13 | - uses: actions/setup-node@v3 14 | with: 15 | node-version: 16 16 | - name: Get yarn cache directory path 17 | id: yarn-cache-dir-path 18 | run: echo "::set-output name=dir::$(yarn cache dir)" 19 | 20 | - uses: actions/cache@v3 21 | id: yarn-cache # use this to check for `cache-hit` (`steps.yarn-cache.outputs.cache-hit != 'true'`) 22 | with: 23 | path: ${{ steps.yarn-cache-dir-path.outputs.dir }} 24 | key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }} 25 | restore-keys: | 26 | ${{ runner.os }}-yarn- 27 | 28 | - name: Install dependencies 29 | run: yarn install --frozen-lockfile 30 | 31 | - name: Type Check 32 | run: yarn run type-check 33 | 34 | lint: 35 | name: Lint 36 | runs-on: ubuntu-latest 37 | steps: 38 | - uses: actions/checkout@v3 39 | - uses: actions/setup-node@v3 40 | with: 41 | node-version: 16 42 | - name: Get yarn cache directory path 43 | id: yarn-cache-dir-path 44 | run: echo "::set-output name=dir::$(yarn cache dir)" 45 | 46 | - uses: actions/cache@v3 47 | id: yarn-cache # use this to check for `cache-hit` (`steps.yarn-cache.outputs.cache-hit != 'true'`) 48 | with: 49 | path: ${{ steps.yarn-cache-dir-path.outputs.dir }} 50 | key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }} 51 | restore-keys: | 52 | ${{ runner.os }}-yarn- 53 | 54 | - name: Install dependencies 55 | run: yarn install --frozen-lockfile 56 | 57 | - name: Lint 58 | run: yarn run lint 59 | 60 | release: 61 | name: Release 62 | needs: 63 | - typecheck 64 | - lint 65 | runs-on: ubuntu-latest 66 | steps: 67 | - uses: actions/checkout@v3 68 | with: 69 | token: ${{ secrets.GH_TOKEN }} 70 | - uses: actions/setup-node@v3 71 | with: 72 | node-version: 16 73 | - name: Get yarn cache directory path 74 | id: yarn-cache-dir-path 75 | run: echo "::set-output name=dir::$(yarn cache dir)" 76 | 77 | - uses: actions/cache@v3 78 | id: yarn-cache # use this to check for `cache-hit` (`steps.yarn-cache.outputs.cache-hit != 'true'`) 79 | with: 80 | path: ${{ steps.yarn-cache-dir-path.outputs.dir }} 81 | key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }} 82 | restore-keys: | 83 | ${{ runner.os }}-yarn- 84 | 85 | - name: Install dependencies 86 | run: yarn install --frozen-lockfile 87 | 88 | - name: Release (semantic release) 89 | run: npx semantic-release 90 | env: # https://help.github.com/en/articles/workflow-syntax-for-github-actions#jobsjob_idstepsenv 91 | NPM_TOKEN: ${{ secrets.NPM_TOKEN }} 92 | # GH_TOKEN: ${{ secrets.GITHUB_TOKEN }} 93 | GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} 94 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | # See https://help.github.com/ignore-files/ for more about ignoring files. 2 | 3 | 4 | ######################################### 5 | ######### Generated by scripts ######## 6 | ######################################### 7 | # for production 8 | /lib 9 | /build 10 | /public/assets 11 | 12 | # others 13 | __generated__/** 14 | src/__generated__/** 15 | !src/__generated__/.gitkeep 16 | 17 | src/graphql/__synced__/** 18 | !.gitkeep 19 | 20 | ############################ 21 | ######### Secrets ######## 22 | ############################ 23 | # env 24 | .env 25 | .env.* 26 | !.env.example 27 | .env.local 28 | .env.development.local 29 | .env.test.local 30 | .env.production.local 31 | .env.secret 32 | 33 | ############################ 34 | ######### Secrets ######## 35 | ############################ 36 | # expo 37 | .expo/ 38 | 39 | # dependencies 40 | node_modules 41 | 42 | npm-debug.log* 43 | yarn-debug.log* 44 | yarn-error.log* 45 | 46 | ######################## 47 | ######## Test ######## 48 | ######################## 49 | # Jest 50 | .jest/ 51 | 52 | # detox 53 | e2e/*.app 54 | e2e/detox_artifacts 55 | e2e/screenshot 56 | # THIS SHOULD BE RENAMED TO 57 | # `e2e/__generated__/detox_artifacts` 58 | # `e2e/__generated__/screenshot` 59 | 60 | # 61 | # Linter 62 | # 63 | 64 | # eslint 65 | .eslintcache 66 | 67 | # Mac 68 | .DS_Store 69 | -------------------------------------------------------------------------------- /CHANGELOG.md: -------------------------------------------------------------------------------- 1 | # [4.0.0](https://github.com/ken0x0a/react-native-reanimated-indicators/compare/v3.0.0...v4.0.0) (2023-06-23) 2 | 3 | 4 | ### Features 5 | 6 | * enable v3 (replace v1 syntax) ([#36](https://github.com/ken0x0a/react-native-reanimated-indicators/issues/36)) ([c3c20d7](https://github.com/ken0x0a/react-native-reanimated-indicators/commit/c3c20d78f505961103f71f3e8529f4bf9f6bc495)) 7 | 8 | 9 | ### BREAKING CHANGES 10 | 11 | * not work with v1 anymore 12 | 13 | * chore: disable eslint rule "react/react-in-jsx-scope" 14 | 15 | * chore: add `declarationMap` for dev experience 16 | 17 | This enables jump to src code 18 | 19 | * doc: add example 20 | 21 | * chore(ci): remove yarn.lock for monorepo dev 22 | 23 | * chore: rm eslint cache 24 | 25 | # [3.0.0](https://github.com/ken0x0a/react-native-reanimated-indicators/compare/v2.0.0...v3.0.0) (2022-11-11) 26 | 27 | 28 | ### Features 29 | 30 | * RNReanimated v2 ([#29](https://github.com/ken0x0a/react-native-reanimated-indicators/issues/29)) ([511db88](https://github.com/ken0x0a/react-native-reanimated-indicators/commit/511db88679526c2e90d3875f4bad6be4df51371f)) 31 | 32 | 33 | ### BREAKING CHANGES 34 | 35 | * drop reanimated v1 36 | 37 | * chore(ci): setup GitHub Actions 38 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | MIT License 2 | 3 | Copyright (c) 2019 Ken Owada 4 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy 6 | of this software and associated documentation files (the "Software"), to deal 7 | in the Software without restriction, including without limitation the rights 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 9 | copies of the Software, and to permit persons to whom the Software is 10 | furnished to do so, subject to the following conditions: 11 | 12 | The above copyright notice and this permission notice shall be included in all 13 | copies or substantial portions of the Software. 14 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 | SOFTWARE. 22 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | [![GitHub Action](https://github.com/ken0x0a/react-native-reanimated-indicators/actions/workflows/publish.yml/badge.svg)](https://github.com/ken0x0a/react-native-reanimated-indicators/actions) 2 | [![npm version](https://img.shields.io/npm/v/react-native-reanimated-indicators?color=%234FC73C)](https://www.npmjs.com/package/react-native-reanimated-indicators) 3 | 4 | Non JS thread blocking indicator components for React Native. 5 | 6 |

7 | 8 |

9 | 10 | 11 | 12 | The code for this example is [here](#example). 13 | 14 | 15 | 16 | --- 17 | 18 | - [Usage](#usage) 19 | - [Components](#components) 20 | - [1. ``](#1-ballindicator-) 21 | - [2. ``](#2-dotindicator-) 22 | - [Example](#example) 23 | - [Status](#status) 24 | - [Why I created this library](#why-i-created-this-library) 25 | 26 | --- 27 | 28 | ## Usage 29 | 30 | ```sh 31 | yarn add react-native-reanimated-indicators 32 | ``` 33 | 34 | 35 | ## Components 36 | 37 | ### 1. `` 38 | 39 | Looks almost the same as the original. 40 | 41 | ```tsx 42 | 43 | ``` 44 | 45 | ### 2. `` 46 | 47 | Looks like the indicator at "Messages" at "mac os" or "iOS", but I couldn't create the same. 48 | 49 | ```tsx 50 | 51 | ``` 52 | 53 | ## Example 54 | 55 | ```tsx 56 | import React from "react"; 57 | import { StyleSheet, Text, View } from "react-native"; 58 | import { BallIndicator, DotIndicator } from "react-native-reanimated-indicators"; 59 | 60 | export const IndicatorScreen: React.FC = () => { 61 | return ( 62 | 63 | IndicatorScreen 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72 | 73 | 74 | 75 | ); 76 | }; 77 | 78 | const styles = StyleSheet.create({ 79 | container: { 80 | flex: 1, 81 | backgroundColor: "black", 82 | }, 83 | rect: { 84 | flex: 1, 85 | alignItems: "center", 86 | justifyContent: "center", 87 | flexDirection: "row", 88 | }, 89 | ball: { 90 | flex: 1, 91 | flexDirection: "row", 92 | }, 93 | }); 94 | ``` 95 | 96 | ## Status 97 | 98 | If anyone is interested in adding new indicators, I appreciate the PR 🙌 99 | 100 | ## Why I created this library 101 | 102 | There is [an awesome indicators library (react-native-indicators)][react-native-indicators] from a long time ago. 103 | But, as `Animated` from `react-native` contact with JS thread when animation is finished, it makes `InteractionManager.runAfterInteraction` never run... 104 | 105 | I was using [the awesome library (react-native-indicators)][react-native-indicators], until use it with `InteractionManager.runAfterInteraction()`. 106 | 107 | As `Animated` from `react-native` contact with JS thread when animation is finished, `InteractionManager.runAfterInteraction` never runs... 108 | I didn't understand for a while, and I switch to `ActivityIndicator` at that moment. 109 | 110 | After that, 111 | I got to know [Can it be done in React Native?](https://www.youtube.com/user/wcandill/videos) and I started to think "CAN IT BE DONE? by using `react-native-reanimated`" 112 | 113 | 114 | 115 | 116 | 117 | [react-native-indicators]: https://github.com/n4kz/react-native-indicators 118 | -------------------------------------------------------------------------------- /doc/example.gif: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/ken0x0a/react-native-reanimated-indicators/b2ba4ac030c52f8c5d7c1768dfa11a7a3a3332a1/doc/example.gif -------------------------------------------------------------------------------- /package.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "react-native-reanimated-indicators", 3 | "version": "4.0.0", 4 | "description": "non ui blocking indicators for react-native using reanimated", 5 | "main": "lib/commonjs/index.js", 6 | "module": "lib/module/index.js", 7 | "react-native": "lib/module/index.js", 8 | "types": "lib/typescript/index.d.ts", 9 | "files": [ 10 | "lib/", 11 | "src/" 12 | ], 13 | "repository": { 14 | "type": "git", 15 | "url": "https://github.com/ken0x0a/react-native-reanimated-indicators.git" 16 | }, 17 | "homepage": "https://github.com/ken0x0a/react-native-reanimated-indicators#readme", 18 | "author": "Ken Owada", 19 | "license": "MIT", 20 | "prettier": "@ken0x0a/prettier-config", 21 | "scripts": { 22 | "lint": "eslint --ext .ts,.tsx --report-unused-disable-directives src --cache", 23 | "type-check": "tsc --noEmit", 24 | "type-check-ci": "tsc --incremental --outDir './build'", 25 | "test": "yarn run type-check && yarn run lint", 26 | "prepare": "bob build", 27 | "tsw": "tsc --noEmit --watch", 28 | "semantic-release": "semantic-release" 29 | }, 30 | "peerDependencies": { 31 | "react": "*", 32 | "react-native": "*", 33 | "react-native-reanimated": ">2.0.0" 34 | }, 35 | "dependencies": { 36 | "react-native-reanimated-hooks": "^4.0.0" 37 | }, 38 | "devDependencies": { 39 | "@ken0x0a/configs": "^2.8.5", 40 | "@ken0x0a/eslint-config-react-deps": "^6.3.2", 41 | "@react-native-community/bob": "0.17.1", 42 | "@semantic-release/changelog": "^6.0.3", 43 | "@semantic-release/git": "^10.0.1", 44 | "@types/react": "^18.2.13", 45 | "@types/react-native": "0.70", 46 | "react": "18.2.0", 47 | "react-native": "0.72.0", 48 | "react-native-reanimated": "^3.3.0", 49 | "semantic-release": "^19.0.5", 50 | "typescript": "5.1.3" 51 | }, 52 | "@react-native-community/bob": { 53 | "source": "src", 54 | "output": "lib", 55 | "targets": [ 56 | "commonjs", 57 | "module", 58 | "typescript" 59 | ] 60 | } 61 | } 62 | -------------------------------------------------------------------------------- /release.config.js: -------------------------------------------------------------------------------- 1 | module.exports = { 2 | branches: ["main"], 3 | // https://github.com/semantic-release/semantic-release/blob/master/docs/usage/plugins.md 4 | // https://github.com/semantic-release/semantic-release/blob/master/docs/extending/plugins-list.md 5 | plugins: [ 6 | "@semantic-release/commit-analyzer", 7 | "@semantic-release/release-notes-generator", 8 | "@semantic-release/changelog", 9 | "@semantic-release/npm", 10 | "@semantic-release/github", 11 | "@semantic-release/git", 12 | ], 13 | }; 14 | -------------------------------------------------------------------------------- /src/BallIndicator.tsx: -------------------------------------------------------------------------------- 1 | import type { ReactNode } from "react"; 2 | import { useMemo } from "react"; 3 | import type { StyleProp, ViewProps, ViewStyle } from "react-native"; 4 | import { StyleSheet, View } from "react-native"; 5 | import Animated, { Easing, interpolate, useAnimatedStyle } from "react-native-reanimated"; 6 | import { useLoop } from "react-native-reanimated-hooks"; 7 | import { range } from "./utils/array"; 8 | import { getLoopInterpolateRanges } from "./utils/get-loop-interpolate-range"; 9 | 10 | type BallIndicatorProps = ViewProps & { 11 | animating?: boolean; 12 | /** 13 | * @default 'black' 14 | */ 15 | color?: string; 16 | containerStyle?: StyleProp; 17 | /** 18 | * @default 8 19 | */ 20 | count?: number; 21 | /** 22 | * @default 10 23 | */ 24 | dotSize?: number; 25 | /** 26 | * @default Easing.linear 27 | */ 28 | easing?: Animated.EasingFunction; 29 | /** 30 | * @default 1000 31 | */ 32 | interval?: number; 33 | /** 34 | * size of the indicator 35 | * @default 52 36 | */ 37 | size?: number; 38 | }; 39 | 40 | export function BallIndicator({ 41 | animating, 42 | interval = 1000, 43 | easing = Easing.linear, 44 | // dot 45 | color: backgroundColor = "black", 46 | size = 52, 47 | dotSize = 10, 48 | count = 8, 49 | // container View 50 | containerStyle, 51 | // inner View 52 | style, 53 | ...viewProps 54 | }: BallIndicatorProps) { 55 | const animation = useLoop({ animating, interval, easing }); 56 | 57 | const balls = useMemo(() => { 58 | const ballStyle = { 59 | backgroundColor, 60 | borderRadius: dotSize / 2, 61 | height: dotSize, 62 | width: dotSize, 63 | }; 64 | 65 | return range(count).map((_, index) => { 66 | return ; 67 | }); 68 | }, [backgroundColor, dotSize, count, animation.value]); 69 | 70 | return ( 71 | 72 | 73 | {balls} 74 | 75 | 76 | ); 77 | } 78 | 79 | type BallProps = { 80 | style: StyleProp>>; 81 | index: number; 82 | count: number; 83 | value: Animated.SharedValue; 84 | }; 85 | function Ball({ style, index, count, value }: BallProps) { 86 | const angle = (index * 360) / count; 87 | 88 | const rotate = { 89 | transform: [{ rotateZ: `${angle}deg` }], 90 | alignItems: "center" as const, 91 | }; 92 | 93 | const ballAnimStyle = useAnimatedStyle(() => { 94 | const count_m1 = count - 1; 95 | const interpolationRanges = getLoopInterpolateRanges({ 96 | count, 97 | calcOutputRange: (idx) => 1.0 - (0.46 / count_m1) * ((idx + count_m1 - index) % count), 98 | }); 99 | return { 100 | transform: [ 101 | { scale: interpolate(value.value, interpolationRanges.inputRange, interpolationRanges.outputRange) }, 102 | ], 103 | }; 104 | }, [value]); 105 | return ( 106 | 107 | 108 | 109 | ); 110 | } 111 | 112 | const styles = StyleSheet.create({ 113 | container: { 114 | flex: 1, 115 | justifyContent: "center", 116 | alignItems: "center", 117 | }, 118 | }); 119 | -------------------------------------------------------------------------------- /src/DotIndicator.tsx: -------------------------------------------------------------------------------- 1 | import type { ReactNode } from "react"; 2 | import React, { useMemo } from "react"; 3 | import type { StyleProp, ViewProps, ViewStyle } from "react-native"; 4 | import { StyleSheet } from "react-native"; 5 | import Animated, { Easing, interpolate, useAnimatedStyle } from "react-native-reanimated"; 6 | import { useLoop } from "react-native-reanimated-hooks"; 7 | import { range } from "./utils/array"; 8 | import { 9 | getLoopInterpolateInputRange, 10 | getLoopInterpolateOutputRange, 11 | } from "./utils/get-loop-interpolate-range"; 12 | 13 | const defaultEasing = Easing.bezier(0.3, 0.01, 0.3, 0.15).factory(); 14 | 15 | type IndicatorEnableProps = { 16 | opacityEnabled?: boolean; 17 | scaleEnabled?: boolean; 18 | }; 19 | type DotIndicatorProps = ViewProps & 20 | IndicatorEnableProps & { 21 | animating?: boolean; 22 | /** 23 | * @default 'black' 24 | */ 25 | color?: string; 26 | containerStyle?: StyleProp; 27 | /** 28 | * @default 3 29 | */ 30 | count?: number; 31 | /** 32 | * @default 4 33 | */ 34 | dotMargin?: number; 35 | /** 36 | * @default 9 37 | */ 38 | dotSize?: number; 39 | /** 40 | * @default Easing.bezier(0.3, 0.01, 0.3, 0.15) 41 | */ 42 | easing?: Animated.EasingFunction; 43 | /** 44 | * @default 1000 45 | */ 46 | interval?: number; 47 | }; 48 | 49 | export function DotIndicator({ 50 | // animating 51 | animating, 52 | interval = 1000, 53 | easing = defaultEasing, 54 | // dot 55 | color: backgroundColor = "black", 56 | dotMargin = 4, 57 | dotSize = 9, 58 | count = 3, 59 | // switch 60 | opacityEnabled = true, 61 | scaleEnabled = false, 62 | // container View 63 | containerStyle, 64 | // inner View 65 | ...viewProps 66 | }: DotIndicatorProps) { 67 | const animation = useLoop({ animating, interval, easing }); 68 | 69 | const dots = useMemo(() => { 70 | const dotStyle = { 71 | backgroundColor, 72 | marginHorizontal: dotMargin / 2, 73 | borderRadius: dotSize / 2, 74 | height: dotSize, 75 | width: dotSize, 76 | }; 77 | 78 | return range(count).map((_, index) => { 79 | const inputRange = getLoopInterpolateInputRange({ count }); 80 | return ( 81 | 87 | ); 88 | }); 89 | }, [backgroundColor, dotMargin, dotSize, count, scaleEnabled, opacityEnabled, animation.value]); 90 | 91 | return ( 92 | 93 | {dots} 94 | 95 | ); 96 | } 97 | 98 | type DotProps = { 99 | style: StyleProp>>; 100 | index: number; 101 | count: number; 102 | value: Animated.SharedValue; 103 | scaleEnabled: boolean; 104 | opacityEnabled: boolean; 105 | inputRange: number[]; 106 | }; 107 | function Dot({ style, index, count, value, scaleEnabled, opacityEnabled, inputRange }: DotProps) { 108 | const animStyle = useAnimatedStyle(() => { 109 | const count_m1 = count - 1; 110 | 111 | const transform: Animated.AnimateStyle>["transform"] = []; 112 | if (scaleEnabled) 113 | transform.push({ 114 | scale: interpolate( 115 | value.value, 116 | inputRange, 117 | getLoopInterpolateOutputRange({ 118 | count, 119 | calcRange: (idx) => 1.0 - (0.46 / count_m1) * ((count_m1 + index - idx) % count), 120 | }), 121 | ), 122 | }); 123 | 124 | return { 125 | opacity: opacityEnabled 126 | ? interpolate( 127 | value.value, 128 | inputRange, 129 | getLoopInterpolateOutputRange({ 130 | count, 131 | calcRange: (idx) => 1 - 0.55 * (((count_m1 + index - idx) % count) / count) ** 0.14, 132 | }), 133 | ) 134 | : undefined, 135 | transform, 136 | } satisfies Animated.AnimateStyle>; 137 | }, []); 138 | 139 | return ; 140 | } 141 | 142 | const styles = StyleSheet.create({ 143 | container: { 144 | flex: 1, 145 | justifyContent: "center", 146 | alignItems: "center", 147 | flexDirection: "row", 148 | }, 149 | }); 150 | -------------------------------------------------------------------------------- /src/index.ts: -------------------------------------------------------------------------------- 1 | export * from "./BallIndicator"; 2 | export * from "./DotIndicator"; 3 | -------------------------------------------------------------------------------- /src/utils/array.ts: -------------------------------------------------------------------------------- 1 | /** 2 | * Range 3 | */ 4 | export function range(size: number): 0[] { 5 | "worklet"; 6 | 7 | return Array(size).fill(0) as 0[]; 8 | } 9 | -------------------------------------------------------------------------------- /src/utils/easing.ts: -------------------------------------------------------------------------------- 1 | // import { Easing } from 'react-native-reanimated' 2 | 3 | // export const easeInOut = Easing.inOut(Easing.ease) 4 | // export const easeIn = Easing.in(Easing.ease) 5 | // export const easeOut = Easing.out(Easing.ease) 6 | -------------------------------------------------------------------------------- /src/utils/get-loop-interpolate-range.ts: -------------------------------------------------------------------------------- 1 | import { range } from "./array"; 2 | 3 | interface GetLoopInterpolateInputRangesOptions { 4 | count: number; 5 | } 6 | /** 7 | * @return [0..count] 8 | */ 9 | export function getLoopInterpolateInputRange({ count }: GetLoopInterpolateInputRangesOptions): number[] { 10 | "worklet"; 11 | 12 | return range(count + 1).map((_, idx) => idx / count); 13 | } 14 | 15 | interface GetLoopInterpolateOutputRangesOptions { 16 | /** 17 | * - number 18 | * - ~~string => color | degrees~~ 19 | */ 20 | calcRange: (positionIndex: number) => number; // string 21 | count: number; 22 | } 23 | 24 | /** 25 | * [] 26 | */ 27 | export function getLoopInterpolateOutputRange({ 28 | count, 29 | calcRange, 30 | }: GetLoopInterpolateOutputRangesOptions): number[] { 31 | "worklet"; 32 | 33 | const outputRange = range(count).map((_, idx) => calcRange(idx)); 34 | outputRange.unshift(outputRange.slice(-1)[0]); 35 | 36 | return outputRange; 37 | } 38 | 39 | type GetLoopInterpolateRangesOptions = { 40 | /** 41 | * - number 42 | * - ~~string => color | degrees~~ 43 | */ 44 | calcOutputRange: (positionIndex: number) => number; // string 45 | count: number; 46 | }; 47 | 48 | type GetLoopInterpolateRangesResult = { 49 | inputRange: number[]; 50 | outputRange: number[]; 51 | }; 52 | export function getLoopInterpolateRanges({ 53 | count, 54 | calcOutputRange, 55 | }: GetLoopInterpolateRangesOptions): GetLoopInterpolateRangesResult { 56 | "worklet"; 57 | 58 | const inputRange = getLoopInterpolateInputRange({ count }); 59 | 60 | const outputRange = getLoopInterpolateOutputRange({ count, calcRange: calcOutputRange }); 61 | 62 | return { inputRange, outputRange }; 63 | } 64 | -------------------------------------------------------------------------------- /tsconfig.json: -------------------------------------------------------------------------------- 1 | { 2 | "extends": "@ken0x0a/tsconfig/bob", 3 | "compilerOptions": { 4 | "declaration": true, 5 | "declarationMap": true, 6 | }, 7 | } --------------------------------------------------------------------------------