Fully updated for Xcode 11.2
If you want simple shapes to use in your app, you can create them directly then just color and position them as needed.
For example, if you wanted a 200x200 red rectangle, you would use this:
Rectangle() .fill(Color.red) .frame(width: 200, height: 200)
Similarly, if you wanted a 50x50 blue circle you would use this:
Circle() .fill(Color.blue) .frame(width: 50, height: 50)
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