Ink Bramble

<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 500 500" width="100%"><path d="M369.5,274.5Q368,299,378.5,344Q389,389,353,400.5Q317,412,283.5,428.5Q250,445,212,439Q174,433,169.5,384Q165,335,111.5,332.5Q58,330,86.5,290Q115,250,133.5,229.5Q152,209,141,169.5Q130,130,170,141Q210,152,230,83.5Q250,15,278,65Q306,115,342.5,118Q379,121,387.5,155Q396,189,383.5,219.5Q371,250,369.5,274.5Z" fill="none" stroke="#111827" stroke-width="7"/></svg>

.blob {
  width: 500px;
  height: 500px;
  clip-path: path("M369.5,274.5Q368,299,378.5,344Q389,389,353,400.5Q317,412,283.5,428.5Q250,445,212,439Q174,433,169.5,384Q165,335,111.5,332.5Q58,330,86.5,290Q115,250,133.5,229.5Q152,209,141,169.5Q130,130,170,141Q210,152,230,83.5Q250,15,278,65Q306,115,342.5,118Q379,121,387.5,155Q396,189,383.5,219.5Q371,250,369.5,274.5Z");
}

/**
 * Blob — generated by blobs.app.
 *
 * Drop this file into your project and render <Blob /> anywhere.
 */
import { useId } from 'react';

export interface BlobProps {
  /** Rendered width and height. A number is treated as px. Defaults to 100%. */
  size?: number | string;
  /** Class name for the root svg element. */
  className?: string;
  /** Accessible name. Without it the graphic is hidden from assistive tech. */
  title?: string;
}

export function Blob({ size = '100%', className, title }: BlobProps) {
  // Unique per instance, so two blobs on one page never share a def id.
  const uid = useId().replace(/[^a-zA-Z0-9]/g, '');
  const titleId = `blob-title-${uid}`;

  return (
    <svg
      xmlns="http://www.w3.org/2000/svg"
      viewBox="0 0 500 500"
      width={size}
      height={size}
      className={className}
      role={title ? 'img' : undefined}
      aria-labelledby={title ? titleId : undefined}
      aria-hidden={title ? undefined : true}
    >
      {title ? <title id={titleId}>{title}</title> : null}
      <path
        d="M369.5,274.5Q368,299,378.5,344Q389,389,353,400.5Q317,412,283.5,428.5Q250,445,212,439Q174,433,169.5,384Q165,335,111.5,332.5Q58,330,86.5,290Q115,250,133.5,229.5Q152,209,141,169.5Q130,130,170,141Q210,152,230,83.5Q250,15,278,65Q306,115,342.5,118Q379,121,387.5,155Q396,189,383.5,219.5Q371,250,369.5,274.5Z"
        fill="none"
        stroke="#111827"
        strokeWidth={7}
      />
    </svg>
  );
}

export default Blob;

// Generated by blobs.app.
//
// Paint the blob:
//   CustomPaint(painter: BlobPainter(), size: const Size(300, 300))
//
// Or clip a widget to it:
//   ClipPath(clipper: BlobClipper(), child: child)

import 'dart:ui' as ui;

import 'package:flutter/material.dart';

/// The blob outline, scaled from its 500x500 design space to [size].
Path buildBlobPath(Size size) {
  final double sx = size.width / 500.0;
  final double sy = size.height / 500.0;
  final Path path = Path();
  path.moveTo(369.5 * sx, 274.5 * sy);
  path.quadraticBezierTo(368.0 * sx, 299.0 * sy, 378.5 * sx, 344.0 * sy);
  path.quadraticBezierTo(389.0 * sx, 389.0 * sy, 353.0 * sx, 400.5 * sy);
  path.quadraticBezierTo(317.0 * sx, 412.0 * sy, 283.5 * sx, 428.5 * sy);
  path.quadraticBezierTo(250.0 * sx, 445.0 * sy, 212.0 * sx, 439.0 * sy);
  path.quadraticBezierTo(174.0 * sx, 433.0 * sy, 169.5 * sx, 384.0 * sy);
  path.quadraticBezierTo(165.0 * sx, 335.0 * sy, 111.5 * sx, 332.5 * sy);
  path.quadraticBezierTo(58.0 * sx, 330.0 * sy, 86.5 * sx, 290.0 * sy);
  path.quadraticBezierTo(115.0 * sx, 250.0 * sy, 133.5 * sx, 229.5 * sy);
  path.quadraticBezierTo(152.0 * sx, 209.0 * sy, 141.0 * sx, 169.5 * sy);
  path.quadraticBezierTo(130.0 * sx, 130.0 * sy, 170.0 * sx, 141.0 * sy);
  path.quadraticBezierTo(210.0 * sx, 152.0 * sy, 230.0 * sx, 83.5 * sy);
  path.quadraticBezierTo(250.0 * sx, 15.0 * sy, 278.0 * sx, 65.0 * sy);
  path.quadraticBezierTo(306.0 * sx, 115.0 * sy, 342.5 * sx, 118.0 * sy);
  path.quadraticBezierTo(379.0 * sx, 121.0 * sy, 387.5 * sx, 155.0 * sy);
  path.quadraticBezierTo(396.0 * sx, 189.0 * sy, 383.5 * sx, 219.5 * sy);
  path.quadraticBezierTo(371.0 * sx, 250.0 * sy, 369.5 * sx, 274.5 * sy);
  path.close();
  return path;
}

class BlobPainter extends CustomPainter {
  const BlobPainter();

  @override
  void paint(Canvas canvas, Size size) {
    final Path path = buildBlobPath(size);
    final Paint paint = Paint()
      ..isAntiAlias = true
      ..color = const Color(0xFF111827)
      ..style = PaintingStyle.stroke
      ..strokeWidth = 7.0 * (size.width / 500.0);
    canvas.drawPath(path, paint);
  }

  @override
  bool shouldRepaint(covariant BlobPainter oldDelegate) => false;
}

/// Clips any widget to the same shape: ClipPath(clipper: BlobClipper(), ...).
class BlobClipper extends CustomClipper<Path> {
  const BlobClipper();

  @override
  Path getClip(Size size) => buildBlobPath(size);

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