2D drawing library for Swift with multiple backends, currently including
- Cairo (cross-platform)
- Core Graphics (Apple platforms)
import PlatformGraphics
import Utils
// Create a new image and a graphics context
let ctx = try PlatformGraphicsContext(width: 300, height: 300)
// Draw some shapes
ctx.draw(line: LineSegment(fromX: 20, y: 20, toX: 50, y: 30))
ctx.draw(rect: Rectangle(fromX: 80, y: 90, width: 10, height: 40, color: Colors.yellow))
ctx.draw(text: Text("Test", at: Vec2(x: 0, y: 15)))
ctx.draw(ellipse: Ellipse(centerX: 150, y: 80, radius: 40))
// Encode the image to a byte buffer
let image = try ctx.makeImage()
let data = try image.pngEncoded()The full example can be found in Snippets/DrawShapes.swift. To run it, invoke
swift run DrawShapesThe resulting PNG will be written to Output/shapes.png.
- Swift 5.7+
- For the Cairo backend (required on Linux, optional on macOS):
- Debian:
apt-get install libcairo2-dev - macOS:
brew install cairo
- Debian:
swift buildswift test