DrawingApp

Using the new Canvas view in SwiftUI for iOS 15+ and macOS 12+

The drawing is done with Canvas in DrawingView.swift

Canvas { context, size in
               for line in lines {
                   let path = createPath(for: line.points)
                   context.stroke(path,
                       with: .color(line.color),
                       lineWidth: 4)
               }
           }

The context works similar to CGContext when drawing in UIKit. You get information on the area of the canvas with propertiy size: CGSize. Here are some other things you can draw:

// systemIcon
  let image = Image(systemName: "trash")
  context.draw(iimage, at: CGPoint(x: 20 * (index + 1), y: 20))
   
//shapes 
  path.addRect(CGRect(x: size.width * 0.1, y:  size.height * 0.1.y, width: 10, height: 10))
                  
// move path
  path.move(to: CGPoint(x: 100, y: 100)
  
//draw lines
  path.addLines(line.points)
  path.addQuadCurve(to: CGPoint(x: 50, y: 10), control: line[index - 1])

yadorogi/DrawingApp

DrawingApp