my_clipper.dart

my_clipper.dart

class MyClipper extends CustomClipper<Path> {
  final double _borderRadius;
  final double _angle;

  MyClipper({
    double? borderRadius,
    double? angle,
  })  : _borderRadius = borderRadius ?? .1,
        _angle = angle ?? degToRad(80);

  @override
  Path getClip(Size size) {
    final borderRadius = _borderRadius * size.shortestSide;
    final dx = borderRadius * cos(_angle);
    final dy = borderRadius * sin(_angle);
    final dX = size.height / tan(_angle);
    Path path = Path()
    ..moveTo(borderRadius, size.height)
      ..quadraticBezierTo(0, size.height, dx, size.height - dy)
      ..lineTo(dX - dx, dy)
      ..quadraticBezierTo(dX, 0, dX + borderRadius, 0)
      ..lineTo(size.width - borderRadius, 0)
      ..quadraticBezierTo(size.width, 0, size.width - dx, dy)
      ..lineTo(size.width - dX + dx, size.height - dy)
      ..quadraticBezierTo(size.width - dX, size.height,
          size.width - dX - borderRadius, size.height)
      ..close();

    return path;
  }
  @override
  bool shouldReclip(CustomClipper<Path> oldClipper) => false;
}

double degToRad(double deg) => deg * (pi / 180.0);