react / react/react-native

transformOrigin produces incorrect results on android

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API: Transforms Issue: Author Provided Repro Platform: Android
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描述

Description

Transforming a view with perspective and transformOrigin to achieve 3d-effects is working perfectly on iOS, but not on android.

This has probably something to do with the normalization of camera perspectives: https://github.com/facebook/react-native/blob/7b7c45030ba6ae196b89f0fb8615d184a261cd4a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/BaseViewManager.java#L599

I would be very thankful for possible workarounds.

Steps to reproduce
  1. Create a RN App using cli or Expo
  2. Add a View which is transformed with origin and perspective

const {width, height} = Dimensions.get('window');

export default function App() {
  return (
    <View
      style={{
        width,
        height,
        backgroundColor: 'red',
        transformOrigin: [0, height / 2, 0],
        transform: [
          {perspective: width},
          {rotateY: '45deg'}],
      }}>
      <Text>test</Text>
    </View>
  );
}```

### React Native Version

0.77.0

### Affected Platforms

Runtime - Android

### Output of `npx react-native info`

```text
System:
  OS: macOS 15.3
  CPU: (14) arm64 Apple M3 Max
  Memory: 101.89 MB / 36.00 GB
  Shell:
    version: "5.9"
    path: /bin/zsh
Binaries:
  Node:
    version: 21.4.0
    path: ~/.nodenv/versions/21.4.0/bin/node
  Yarn:
    version: 1.22.21
    path: ~/.nodenv/versions/21.4.0/bin/yarn
  npm:
    version: 10.2.4
    path: ~/.nodenv/versions/21.4.0/bin/npm
  Watchman:
    version: 2024.12.02.00
    path: /opt/homebrew/bin/watchman
Managers:
  CocoaPods:
    version: 1.16.2
    path: /opt/homebrew/bin/pod
SDKs:
  iOS SDK:
    Platforms:
      - DriverKit 24.2
      - iOS 18.2
      - macOS 15.2
      - tvOS 18.2
      - visionOS 2.2
      - watchOS 11.2
  Android SDK:
    API Levels:
      - "31"
      - "33"
      - "34"
      - "35"
    Build Tools:
      - 30.0.3
      - 31.0.0
      - 33.0.0
      - 33.0.1
      - 34.0.0
      - 35.0.0
    System Images:
      - android-34 | Google APIs ARM 64 v8a
      - android-34 | Google Play ARM 64 v8a
    Android NDK: Not Found
IDEs:
  Android Studio: 2024.2 AI-242.23726.103.2422.12816248
  Xcode:
    version: 16.2/16C5032a
    path: /usr/bin/xcodebuild
Languages:
  Java:
    version: 17.0.10
    path: /Users/take/.sdkman/candidates/java/current/bin/javac
  Ruby:
    version: 2.6.10
    path: /usr/bin/ruby
npmPackages:
  "@react-native-community/cli":
    installed: 15.0.1
    wanted: 15.0.1
  react:
    installed: 18.3.1
    wanted: 18.3.1
  react-native:
    installed: 0.77.0
    wanted: 0.77.0
  react-native-macos: Not Found
npmGlobalPackages:
  "*react-native*": Not Found
Android:
  hermesEnabled: true
  newArchEnabled: true
iOS:
  hermesEnabled: Not found
  newArchEnabled: false
Stacktrace or Logs
no stacktrace
Reproducer

https://snack.expo.dev/TUuheLubQqqLvtaHBxTR8

Screenshots and Videos

iOS: Image android: Image

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调研方向

使用 React Native 0.77.0,通过链接的 Expo Snack 重现 Android 和 iOS 之间的差异。首先检查 ReactAndroid/src/main/java/com/facebook/react/uimanager/BaseViewManager.java 第 599 行附近的位置,这里疑似存在 perspective 规范化处理。比较各平台上的变换行为;当 transformOrigin 和 perspective 在 Android 上产生匹配的 3D 结果时,即表示完成。

由索引模型根据 Issue 内容生成。

评估

技术栈
java, javascript, react-native
领域
mobile
Issue 类型
缺陷
难度
4/5
预计耗时
3-5 天
活跃度
停滞
描述清晰度
基本清楚
新手友好度
35/100

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