Removed late modifiers from stars bg

Author: bhivam

lib/weather/bg/weather_bg.dart

@@ -1,8 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:hackru/weather/bg/weather_color_bg.dart';
 import 'package:hackru/weather/bg/weather_night_star_bg.dart';
-import 'package:hackru/weather/bg/weather_rain_snow_bg.dart';
-import 'package:hackru/weather/bg/weather_thunder_bg.dart';
 
 import '../utils/weather_type.dart';
 
@@ -103,28 +101,6 @@ class WeatherItemBg extends StatelessWidget {
     return Container();
   }
 
-  /// 构建雷暴效果
-  Widget _buildThunderBg() {
-    if (weatherType == WeatherType.thunder) {
-      return WeatherThunderBg(
-        weatherType: weatherType,
-      );
-    }
-    return Container();
-  }
-
-  /// 构建雨雪背景效果
-  Widget _buildRainSnowBg() {
-    if (WeatherUtil.isSnowRain(weatherType)) {
-      return WeatherRainSnowBg(
-        weatherType: weatherType,
-        viewWidth: width,
-        viewHeight: height,
-      );
-    }
-    return Container();
-  }
-
   @override
   Widget build(BuildContext context) {
     return Container(
@@ -136,8 +112,6 @@ class WeatherItemBg extends StatelessWidget {
             WeatherColorBg(
               weatherType: weatherType,
             ),
-            _buildRainSnowBg(),
-            _buildThunderBg(),
             _buildNightStarBg(),
           ],
         ),

lib/weather/bg/weather_night_star_bg.dart

@@ -23,16 +23,16 @@ class _WeatherNightStarBgState extends State<WeatherNightStarBg>
   List<_StarParam> _starParams = [];
   List<_MeteorParam> _meteorParams = [];
   WeatherDataState _state = WeatherDataState.init;
-  late double width;
-  late double height;
-  late double widthRatio;
+  double? width;
+  double? height;
+  double? widthRatio;
 
   /// 准备星星的参数信息
   void fetchData() async {
     Size? size = SizeInherited.of(context)?.size;
     width = size?.width ?? double.infinity;
     height = size?.height ?? double.infinity;
-    widthRatio = (height * 2) / width;
+    widthRatio = (height! * 2) / width!;
     print("width ratio $widthRatio");
     weatherPrint("开始准备星星参数");
     _state = WeatherDataState.loading;
@@ -150,10 +150,10 @@ class _StarPainter extends CustomPainter {
       <Color>[const Color(0xFFFFFFFF), const Color(0x00FFFFFF)],
     );
     _meteorPaint.shader = gradient;
-    canvas.rotate(pi * param.radians);
+    canvas.rotate(pi * param.radians!);
     canvas.scale(widthRatio);
     canvas.translate(
-        param.translateX, tan(pi * 0.1) * _meteorWidth + param.translateY);
+        param.translateX!, tan(pi * 0.1) * _meteorWidth + param.translateY!);
     canvas.drawRRect(
         RRect.fromLTRBAndCorners(0, 0, _meteorWidth, _meteorHeight,
             topLeft: _radius,
@@ -191,8 +191,8 @@ class _StarPainter extends CustomPainter {
       0,
     ]);
     _paint.colorFilter = identity;
-    canvas.scale(param.scale);
-    canvas.drawCircle(Offset(param.x, param.y), 0.8, _paint);
+    canvas.scale(param.scale!);
+    canvas.drawCircle(Offset(param.x!, param.y!), 0.8, _paint);
     canvas.restore();
     param.move();
   }
@@ -204,11 +204,11 @@ class _StarPainter extends CustomPainter {
 }
 
 class _MeteorParam {
-  late double translateX;
-  late double translateY;
-  late double radians;
+  double? translateX;
+  double? translateY;
+  double? radians;
 
-  late double width, height, widthRatio;
+  double? width, height, widthRatio;
 
   /// 初始化数据
   void init(width, height, widthRatio) {
@@ -220,53 +220,53 @@ class _MeteorParam {
 
   /// 重置数据
   void reset() {
-    translateX = width + Random().nextDouble() * 20.0 * width;
+    translateX = width! + Random().nextDouble() * 20.0 * width!;
     radians = -Random().nextDouble() * 0.07 - 0.05;
-    translateY = Random().nextDouble() * 0.5 * height * widthRatio;
+    translateY = Random().nextDouble() * 0.5 * height! * widthRatio!;
   }
 
   /// 移动
   void move() {
-    translateX -= 20;
-    if (translateX <= -1.0 * width / widthRatio) {
+    translateX = translateX! + 20;
+    if (translateX! <= -1.0 * width! / widthRatio!) {
       reset();
     }
   }
 }
 
 class _StarParam {
   /// x 坐标
-  late double x;
+  double? x;
 
   /// y 坐标
-  late double y;
+  double? y;
 
   /// 透明度值，默认为 0
   double alpha = 0.0;
 
   /// 缩放
-  late double scale;
+  double? scale;
 
   /// 是否反向动画
   bool reverse = false;
 
   /// 当前下标值
   int index;
 
-  late double width;
+  double? width;
 
-  late double height;
+  double? height;
 
-  late double widthRatio;
+  double? widthRatio;
 
   _StarParam(this.index);
 
   void reset() {
     alpha = 0;
     double baseScale = index == 0 ? 0.7 : 0.5;
-    scale = (Random().nextDouble() * 0.1 + baseScale) * widthRatio;
-    x = Random().nextDouble() * 1 * width / scale;
-    y = Random().nextDouble() * max(0.3 * height, 150);
+    scale = (Random().nextDouble() * 0.1 + baseScale) * widthRatio!;
+    x = Random().nextDouble() * 1 * width! / scale!;
+    y = Random().nextDouble() * max(0.3 * height!, 150);
     reverse = false;
   }
 
@@ -278,7 +278,7 @@ class _StarParam {
     alpha = Random().nextDouble();
     double baseScale = index == 0 ? 0.7 : 0.5;
     scale = (Random().nextDouble() * 0.1 + baseScale) * widthRatio;
-    x = Random().nextDouble() * 1 * width / scale;
+    x = Random().nextDouble() * 1 * width / scale!;
     y = Random().nextDouble() * max(0.3 * height, 150);
     reverse = false;
   }