Pure dart library for parsing and manipulating SVG paths.

Features

• Parse a SVG path
• Translate the path
• Rotate the path around a point
• Mirror the path across an axis
• Scale the path
• Reverse (e.g clockwise to counter-clockwise)

Does not depend on Flutter or dart:ui, but these Path objects can easily be converted to dart:ui Path objects.

Usage

dart pub add svg_path_transform

import 'package:svg_path_transform/svg_path_transform.dart';

void main() {
  // Read a path from a SVG path string.
  final path = Path.fromString('M 10 10 H 90 V 90 H 10 L 10 10 Z');

  // Translate the path 10 units in the x and y direction.
  final p0 = path.translate(10, 10);

  // Rotate the path 45 degrees around the point (50, 50).
  final p1 = path.rotate(pi / 4, 50, 50);

  // Reverse the path (drawing from the end to the start)
  final p2 = path.reverse();

  // Mirror the path across the X axis.
  final p3 = path.mirror(Axis.x);

  // Scale the path by 2 in the x direction, and 0.5 in the y direction.
  final p4 = path.scale(2, 0.5);

  // Print out the paths as SVG path strings.
  print(p0.toString());
  print(p1.toString());
  print(p2.toString());
  print(p3.toString());
  print(p4.toString());
}

Development

To run the tests:

make all

To publish:

# Bump the version in pubspec.yaml
# Update the CHANGELOG.md

git commit -m "chore: bump version to 1.2.0"
git tag svg_path_transform-v1.2.0
git push origin main --tags

Limitations

• All SVG commands are normalised to the absolute versions of moveTo, lineTo or curveTo. The resulting image is identical, but the path string may be longer.