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| import UIKit | |
| import XCPlayground | |
| let page = XCPlaygroundPage.currentPage | |
| let view = UIView(frame: CGRect(x: 0, y: 0, width: 750, height: 750)) | |
| page.liveView = view | |
| let position = CGPoint(x: 0, y: 0) | |
| let size = CGSize(width: 740, height: 740) | |
| let lineWidth: CGFloat = 50 | |
| let arcSize = CGSize(width: size.width - lineWidth, height: size.height - lineWidth) | |
| let arc1 = CAShapeLayer() | |
| arc1.lineWidth = lineWidth / 4 | |
| arc1.path = UIBezierPath(ovalInRect: CGRect(origin: position, size: arcSize)).CGPath | |
| arc1.bounds = CGRect(origin: position, size: arcSize) | |
| arc1.strokeColor = UIColor.grayColor().CGColor | |
| arc1.fillColor = UIColor.clearColor().CGColor | |
| arc1.position = view.center | |
| view.layer.addSublayer(arc1) | |
| let arc2 = CAShapeLayer() | |
| arc2.lineWidth = lineWidth | |
| arc2.path = UIBezierPath(ovalInRect: CGRect(origin: position, size: arcSize)).CGPath | |
| arc2.bounds = CGRect(origin: position, size: arcSize) | |
| arc2.strokeStart = 0.0 | |
| arc2.strokeEnd = 0.53 | |
| arc2.strokeColor = UIColor.greenColor().CGColor | |
| arc2.fillColor = UIColor.clearColor().CGColor | |
| arc2.position = view.center | |
| view.layer.addSublayer(arc2) | |
| let transform = CATransform3DRotate(arc2.transform, -90.0 * CGFloat(M_PI) / 180.0, 0.0, 0.0, 1.0) | |
| arc2.transform = transform |
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