[Impeller] When the stroke width is equal to the diameter of the circle, the result of the drawn arc is incorrect #133032
Description
Is there an existing issue for this?
- I have searched the existing issues
- I have read the guide to filing a bug
Steps to reproduce
run the sample code on master channel
Expected results
The center point of the arc is displayed correctly
Actual results
The center point of the arc is displayed incorrectly
Code sample
Code sample
import 'dart:math';
import 'package:flutter/material.dart';
void main() {
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({super.key});
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
colorSchemeSeed: Colors.deepPurple,
useMaterial3: true,
),
home: const MyWidget(),
);
}
}
class MyWidget extends StatefulWidget {
const MyWidget({super.key});
@override
State<MyWidget> createState() => _MyWidgetState();
}
class _MyWidgetState extends State<MyWidget>
with SingleTickerProviderStateMixin {
@override
void initState() {
super.initState();
}
@override
void dispose() {
// controller.dispose();
super.dispose();
}
@override
Widget build(BuildContext context) {
return Scaffold(
body: CustomPaint(
size: Size(MediaQuery.of(context).size.width,
MediaQuery.of(context).size.width),
painter: MyPaint(),
),
);
}
}
class MyPaint extends CustomPainter {
@override
void paint(Canvas canvas, Size size) {
final center = Offset(size.width / 2, size.height / 2);
var paint = Paint()
..color = Colors.orangeAccent
..style = PaintingStyle.stroke;
paint.strokeWidth = 1;
canvas.drawRect(Rect.fromCenter(center: center, width: 200, height: 200), paint);
paint.strokeWidth = 200;
paint.color = Colors.blue;
canvas.drawArc(Rect.fromCenter(center: center, width: 200, height: 200), 0, 1.5, false, paint);
}
@override
bool shouldRepaint(MyPaint oldDelegate) => false;
}
Screenshots or Video
Screenshots / Video demonstration
| expected | actual |
|---|---|
 |
 |
Logs
Logs
[Paste your logs here]Flutter Doctor output
Doctor output
[✓] Flutter (Channel main, 3.14.0-9.0.pre.26, on macOS 13.3.1 22E261 darwin-arm64, locale zh-Hans-CN)
• Flutter version 3.14.0-9.0.pre.26 on channel main at /Users/bytedance/Develop/upstream/flutter
• Upstream repository [email protected]:flutter/flutter.git
• Framework revision 5b20988483 (3 hours ago), 2023-08-22 01:26:25 -0400
• Engine revision 454e0e35f8
• Dart version 3.2.0 (build 3.2.0-94.0.dev)
• DevTools version 2.26.1
• Pub download mirror https://dart-pub.byted.org
[✓] Android toolchain - develop for Android devices (Android SDK version 33.0.0)
• Android SDK at /Users/bytedance/Library/Android/sdk
• Platform android-33, build-tools 33.0.0
• ANDROID_HOME = /Users/bytedance/Library/Android/sdk
• Java binary at: /Applications/Android Studio.app/Contents/jre/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build 11.0.13+0-b1751.21-8125866)
• All Android licenses accepted.
[✓] Xcode - develop for iOS and macOS (Xcode 14.1)
• Xcode at /Applications/Xcode.app/Contents/Developer
• Build 14B47b
• CocoaPods version 1.12.1
[✓] Chrome - develop for the web
• Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome
[✓] Android Studio (version 2021.3)
• Android Studio at /Applications/Android Studio.app/Contents
• Flutter plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/6351-dart
• Java version OpenJDK Runtime Environment (build 11.0.13+0-b1751.21-8125866)
[✓] VS Code (version 1.78.2)
• VS Code at /Applications/Visual Studio Code.app/Contents
• Flutter extension version 3.70.0
[✓] Connected device (3 available)
• iPhone SE (2nd generation) (mobile) • 00008030-0018042E2E46802E • ios • iOS 15.0 19A346
• macOS (desktop) • macos • darwin-arm64 • macOS 13.3.1 22E261 darwin-arm64
• Chrome (web) • chrome • web-javascript • Google Chrome 116.0.5845.96
[✓] Network resources
• All expected network resources are available.
• No issues found!Metadata
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Labels
High-priority issues at the top of the work listUI glitches reported at the engine/skia or impeller rendering levelImpeller rendering backend issues and features requestsflutter/engine related. See also e: labels.Found to occur in 3.13Found to occur in 3.14The issue has been confirmed reproducible and is ready to work onIssue is closed as already fixed in a newer versionOwned by Engine teamTriaged by Engine team