books

2023-12-16 12:40:32 +08:00
parent ab2778a22b
commit 01fdf966c5
593 changed files with 8995 additions and 27753 deletions
--- a/assets/draw/p08/s02.dart
+++ b/assets/draw/p08/s02.dart
@@ -0,0 +1,111 @@
+
+import 'package:flutter/material.dart';
+
+import 'dart:ui' as ui;
+
+import '../components/coordinate_pro.dart';
+
+
+/// create by 张风捷特烈 on 2020-03-19
+/// contact me by email 1981462002@qq.com
+/// 说明: 纸
+
+class Paper extends StatelessWidget {
+  const Paper({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      color: Colors.white,
+      child: CustomPaint(
+        painter: PaperPainter(),
+      ),
+    );
+  }
+}
+
+class PaperPainter extends CustomPainter {
+  Coordinate coordinate = Coordinate();
+  @override
+  void paint(Canvas canvas, Size size) {
+    coordinate.paint(canvas, size);
+    canvas.translate(size.width / 2, size.height / 2);
+
+    drawShaderRadial(canvas);
+  }
+
+  void drawShaderRadial(Canvas canvas) {
+    var colors = [
+      Color(0xFFF60C0C),
+      Color(0xFFF3B913),
+      Color(0xFFE7F716),
+      Color(0xFF3DF30B),
+      Color(0xFF0DF6EF),
+      Color(0xFF0829FB),
+      Color(0xFFB709F4),
+    ];
+
+    var pos = [1.0 / 7, 2.0 / 7, 3.0 / 7, 4.0 / 7, 5.0 / 7, 6.0 / 7, 1.0];
+    Paint paint =  Paint();
+    paint
+      ..style = PaintingStyle.fill
+      ..color = Colors.blue;
+
+    paint.shader = ui.Gradient.radial(
+        Offset(0, 0), 25, colors, pos, TileMode.clamp);
+    canvas.drawCircle(
+      Offset(0, 0),
+      50,
+      paint,
+    );
+
+    canvas.translate(160, 0);
+    paint.shader = ui.Gradient.radial(
+        Offset(0, 0), 25, colors, pos, TileMode.repeated);
+    canvas.drawCircle(
+      Offset(0, 0),
+      50,
+      paint,
+    );
+
+    canvas.translate(-160*2.0, 0);
+    paint.shader = ui.Gradient.radial(
+        Offset(0, 0), 25, colors, pos, TileMode.mirror);
+    canvas.drawCircle(
+      Offset(0, 0),
+      50,
+      paint,
+    );
+
+    canvas.translate(0, 120);
+    paint.shader = ui.Gradient.radial(Offset(0, 0), 25, colors,
+        pos, TileMode.mirror, null, Offset(10, 10), 1);
+    canvas.drawCircle(
+      Offset.zero,
+      50,
+      paint,
+    );
+
+    canvas.translate(160, 0);
+    paint.shader = ui.Gradient.radial(Offset(0, 0), 25, colors,
+        pos, TileMode.mirror, null, Offset(-10, -10), 3);
+    canvas.drawCircle(
+      Offset.zero,
+      50,
+      paint,
+    );
+
+
+    canvas.translate(160, 0);
+    paint.shader = ui.Gradient.radial(Offset(0, 0), 25, colors,
+        pos, TileMode.mirror, null, Offset(-10, -10), 0);
+    canvas.drawCircle(
+      Offset.zero,
+      50,
+      paint,
+    );
+  }
+
+  @override
+  bool shouldRepaint(CustomPainter oldDelegate) => true;
+}