Update Sample

Author: swhitty

README.md

@@ -6,7 +6,7 @@
 
 # SwiftDraw
 
-A Swift library for parsing and drawing SVG images to CoreGraphics contexts.
+A Swift library for parsing and drawing SVG images to CoreGraphics contexts.  SwiftDraw can also convert an SVG into Swift source code.
 
 ## Usage
 
@@ -29,3 +29,71 @@ let image = NSImage(svgNamed: "sample.svg")
 Download the latest command line tool [here](https://github.com/swhitty/SwiftDraw/releases/latest/download/SwiftDraw.dmg).
 
 `$ swiftdraw sample.svg --format pdf --size 48x48`
+
+
+#### Source code generation
+
+The command line tool can also covert an SVG image into swift source code:
+
+```xml
+<?xml version="1.0" encoding="utf-8"?>
+<svg version="1.1" xmlns="http://www.w3.org/2000/svg" width="160" height="160">
+ 	<rect width="160" height="160" fill="snow" />
+	<path d="m 80 20 a 50 50 0 1 0 50 50 h -50 z" fill="pink" stroke="black" stroke-width="2"/>
+</svg>
+```
+
+`$ swiftdraw simple.svg --format swift`
+
+```swift
+extension UIImage {
+  static func svgSimple() -> UIImage {
+    let f = UIGraphicsImageRendererFormat.default()
+    f.opaque = false
+    f.preferredRange = .standard
+    return UIGraphicsImageRenderer(size: CGSize(width: 160.0, height: 160.0), format: f).image {
+      drawSVG(in: $0.cgContext)
+    }
+  }
+
+  private static func drawSVG(in ctx: CGContext) {
+    let rgb = CGColorSpaceCreateDeviceRGB()
+    let color1 = CGColor(colorSpace: rgb, components: [1.0, 0.98039216, 0.98039216, 1.0])!
+    ctx.setFillColor(color1)
+    let path = CGPath(
+      roundedRect: CGRect(x: 0.0, y: 0.0, width: 160.0, height: 160.0),
+      cornerWidth: 0.0,
+      cornerHeight: 0.0,
+      transform: nil
+    )
+    ctx.addPath(path)
+    ctx.fillPath(using: .evenOdd)
+    let color2 = CGColor(colorSpace: rgb, components: [1.0, 0.7529412, 0.79607844, 1.0])!
+    ctx.setFillColor(color2)
+    let path1 = CGMutablePath()
+    path1.move(to: CGPoint(x: 80.0, y: 20.0))
+    path1.addCurve(to: CGPoint(x: 30.0, y: 69.99999),
+                   control1: CGPoint(x: 52.38576, y: 20.0),
+                   control2: CGPoint(x: 30.000004, y: 42.385757))
+    path1.addCurve(to: CGPoint(x: 79.99998, y: 120.0),
+                   control1: CGPoint(x: 29.999992, y: 97.61423),
+                   control2: CGPoint(x: 52.385742, y: 119.999985))
+    path1.addCurve(to: CGPoint(x: 130.0, y: 70.00004),
+                   control1: CGPoint(x: 107.61421, y: 120.000015),
+                   control2: CGPoint(x: 129.99998, y: 97.61427))
+    path1.addLine(to: CGPoint(x: 80.0, y: 70.00004))
+    path1.closeSubpath()
+    ctx.addPath(path1)
+    ctx.fillPath(using: .evenOdd)
+    ctx.setLineCap(.butt)
+    ctx.setLineJoin(.miter)
+    ctx.setLineWidth(2.0)
+    ctx.setMiterLimit(4.0)
+    let color3 = CGColor(colorSpace: rgb, components: [0.0, 0.0, 0.0, 1.0])!
+    ctx.setStrokeColor(color3)
+    ctx.addPath(path1)
+    ctx.strokePath()
+  }
+}
+```
+