Custom Painter; path

Now, lets add some bakwas to custom painter. We are going to use a path for painting the screen. These path can be derived from line, circles, rectangles, polygons etc.

//main.dart
import 'package:flutter/material.dart';
import 'path_painter.dart';
void main() => runApp(new MyApp());
class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Painter',
      home: PathPainter(),
    );
  }
}
//path_painter.dart
import 'package:flutter/material.dart';
class PathPainter extends StatefulWidget {
@override
  _PathPainterState createState() => _PathPainterState();
}
class _PathPainterState extends State<PathPainter> with SingleTickerProviderStateMixin {
  AnimationController _controller;
@override
  void initState() {
    super.initState();
    _controller = AnimationController(vsync: this);
  }
@override
  void dispose() {
    super.dispose();
    _controller.dispose();
  }
@override
  Widget build(BuildContext context) {
    return CustomPaint(
      size: Size(MediaQuery.of(context).size.width,
          MediaQuery.of(context).size.height),
      painter: DrawPath(),
    );
  }
}
class DrawPath extends CustomPainter {
  Map<String, double> center;
  double radius;
@override
  void paint(Canvas canvas, Size size) {
    Paint brush = new Paint()
      ..color = Colors.red
      ..strokeCap = StrokeCap.round
      ..style = PaintingStyle.stroke
      ..strokeWidth = 20;
//canvas.drawArc(Rect.fromLTRB(50, 50, 200, 200), (40*3.14)/180, (90*3.14)/180, false, brush);
    //canvas.drawRect(Rect.fromLTRB(250, 100, 300, 200), brush);
    //canvas.drawOval(Rect.fromLTRB(100, 300, 300, 250), brush);
    //canvas.drawRRect(RRect.fromLTRBR(100, 350, 150, 600, Radius.circular(15)), brush);
    //canvas.drawPaint(brush);
List<Offset> polygonPath = new List(4);
    polygonPath[0] = Offset(40, 500);
    polygonPath[1] = Offset(80, 450);
    polygonPath[2] = Offset(40, 400);
    polygonPath[3] = Offset(80, 350);
Path path = new Path();
    path.moveTo(60, 130);
    path.lineTo(50, 80);
    path.addRect(Rect.fromLTRB(60, 130, 200, 200));
    path.addArc(Rect.fromLTRB(100, 200, 250, 350), (300*3.14)/180, (200*3.14)/180 );
    path.addPath(path, Offset(70, 250));
    path.lineTo(40, 500);
    path.addPolygon(polygonPath, false);
    path.addOval(Rect.fromLTRB(80, 350, 40, 300));
    path.addRRect(RRect.fromLTRBR(80, 280, 40, 220, Radius.circular(30)));
    path.arcTo(Rect.fromLTRB(60, 230, 150, 350), (250*3.14)/180, (90*3.14)/180, true);
    path.arcToPoint(Offset(300, 300), radius: Radius.circular(100));
    canvas.drawPath(path, brush);
    
  }
@override
  bool shouldRepaint(CustomPainter oldDelegate) {
    // TODO: implement shouldRepaint
    return true;
  }
}

And you will this beautiful piece of art.