Update launch config and use a custom painter

Signed-off-by: Hans Kokx <hans.d.kokx@gmail.com>

.vscode/launch.json

@@ -1,18 +1,38 @@
 {
+  // Use IntelliSense to learn about possible attributes.
+  // Hover to view descriptions of existing attributes.
+  // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
   "version": "0.2.0",
   "configurations": [
     {
-      "name": "clang - Build and debug active file",
+      "name": "Flutter",
+      "request": "launch",
+      "type": "dart"
+    },
+    {
+      "name": "Flutter (profile mode)",
+      "request": "launch",
+      "type": "dart",
+      "flutterMode": "profile"
+    },
+    {
+      "name": "Flutter (release mode)",
+      "request": "launch",
+      "type": "dart",
+      "flutterMode": "release"
+    },
+    {
+      "name": "Raycaster (C)",
       "type": "cppdbg",
       "request": "launch",
-      "program": "${fileDirname}/${fileBasenameNoExtension}",
+      "program": "${workspaceFolder}/raycaster",
       "args": [],
       "stopAtEntry": false,
-      "cwd": "${fileDirname}",
+      "cwd": "${workspaceFolder}",
       "environment": [],
       "externalConsole": false,
       "MIMode": "lldb",
-      "preLaunchTask": "C/C++: clang build active file"
+      "preLaunchTask": "Build raycaster"
     }
   ]
 }

.vscode/tasks.json

@@ -1,6 +1,30 @@
 {
   "version": "2.0.0",
   "tasks": [
+    {
+      "type": "cppbuild",
+      "label": "Build raycaster",
+      "command": "/usr/bin/clang",
+      "args": [
+        "-g",
+        "${workspaceFolder}/raycaster.c",
+        "-o",
+        "${workspaceFolder}/raycaster",
+        "-framework",
+        "OpenGL",
+        "-framework",
+        "GLUT",
+        "-Wno-deprecated-declarations"
+      ],
+      "options": {
+        "cwd": "${workspaceFolder}"
+      },
+      "problemMatcher": [
+        "$gcc"
+      ],
+      "group": "build",
+      "detail": "Builds raycaster.c explicitly"
+    },
     {
       "type": "cppbuild",
       "label": "C/C++: clang build active file",

analysis_options.yaml

@@ -1,4 +1,4 @@
-include: package:flutter_lints/flutter.yaml
+include: package:arcane_analysis/analysis_options.yaml
 
 analyzer:
   exclude:

lib/main.dart

@@ -1,4 +1,5 @@
-import 'package:flutter/material.dart';
+import "package:flutter/material.dart";
+import "package:flutter/rendering.dart";
 
 void main() {
   runApp(const MainApp());
@@ -9,8 +10,57 @@ class MainApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return const MaterialApp(
+    return LayoutBuilder(
-      home: Scaffold(body: Center(child: Text('Hello World!'))),
+      builder: (context, constraints) => CustomPaint(
+        size: constraints.biggest,
+        painter: Sky(),
+      ),
     );
   }
 }
+
+class Sky extends CustomPainter {
+  @override
+  void paint(Canvas canvas, Size size) {
+    final Rect rect = Offset.zero & size;
+    const RadialGradient gradient = RadialGradient(
+      center: Alignment(0.7, -0.6),
+      radius: 0.2,
+      colors: <Color>[Color(0xFFFFFF00), Color(0xFF0099FF)],
+      stops: <double>[0.4, 1.0],
+    );
+    canvas.drawRect(rect, Paint()..shader = gradient.createShader(rect));
+  }
+
+  @override
+  SemanticsBuilderCallback get semanticsBuilder {
+    return (Size size) {
+      // Annotate a rectangle containing the picture of the sun
+      // with the label "Sun". When text to speech feature is enabled on the
+      // device, a user will be able to locate the sun on this picture by
+      // touch.
+      Rect rect = Offset.zero & size;
+      final double width = size.shortestSide * 0.4;
+      rect = const Alignment(0.8, -0.9).inscribe(Size(width, width), rect);
+      return <CustomPainterSemantics>[
+        CustomPainterSemantics(
+          rect: rect,
+          properties: const SemanticsProperties(
+            label: "Sun",
+            textDirection: TextDirection.ltr,
+          ),
+        ),
+      ];
+    };
+  }
+
+  // Since this Sky painter has no fields, it always paints
+  // the same thing and semantics information is the same.
+  // Therefore we return false here. If we had fields (set
+  // from the constructor) then we would return true if any
+  // of them differed from the same fields on the oldDelegate.
+  @override
+  bool shouldRepaint(Sky oldDelegate) => false;
+  @override
+  bool shouldRebuildSemantics(Sky oldDelegate) => false;
+}

pubspec.yaml

@@ -1,6 +1,6 @@
 name: raycaster
 description: "A new Flutter project."
-publish_to: 'none'
+publish_to: "none"
 version: 0.1.0+1
 
 environment:
@@ -11,9 +11,9 @@ dependencies:
     sdk: flutter
 
 dev_dependencies:
+  arcane_analysis: ^1.0.5
   flutter_test:
     sdk: flutter
-  flutter_lints: ^6.0.0
 
 flutter:
   uses-material-design: true