// // NVActivityIndicatorAnimationSquareSpin.swift // NVActivityIndicatorView // // The MIT License (MIT) // Copyright (c) 2016 Vinh Nguyen // Permission is hereby granted, free of charge, to any person obtaining a copy // of this software and associated documentation files (the "Software"), to deal // in the Software without restriction, including without limitation the rights // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell // copies of the Software, and to permit persons to whom the Software is // furnished to do so, subject to the following conditions: // The above copyright notice and this permission notice shall be included in all // copies or substantial portions of the Software. // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE // SOFTWARE. // #if canImport(UIKit) import UIKit class NVActivityIndicatorAnimationSquareSpin: NVActivityIndicatorAnimationDelegate { func setUpAnimation(in layer: CALayer, size: CGSize, color: UIColor) { let duration: CFTimeInterval = 3 let timingFunction = CAMediaTimingFunction(controlPoints: 0.09, 0.57, 0.49, 0.9) // Animation let animation = CAKeyframeAnimation(keyPath: "transform") animation.keyTimes = [0, 0.25, 0.5, 0.75, 1] animation.timingFunctions = [timingFunction, timingFunction, timingFunction, timingFunction] animation.values = [ NSValue(caTransform3D: CATransform3DConcat(createRotateXTransform(angle: 0), createRotateYTransform(angle: 0))), NSValue(caTransform3D: CATransform3DConcat(createRotateXTransform(angle: CGFloat(Double.pi)), createRotateYTransform(angle: 0))), NSValue(caTransform3D: CATransform3DConcat(createRotateXTransform(angle: CGFloat(Double.pi)), createRotateYTransform(angle: CGFloat(Double.pi)))), NSValue(caTransform3D: CATransform3DConcat(createRotateXTransform(angle: 0), createRotateYTransform(angle: CGFloat(Double.pi)))), NSValue(caTransform3D: CATransform3DConcat(createRotateXTransform(angle: 0), createRotateYTransform(angle: 0))) ] animation.duration = duration animation.repeatCount = HUGE animation.isRemovedOnCompletion = false // Draw square let square = NVActivityIndicatorShape.rectangle.layerWith(size: size, color: color) let frame = CGRect(x: (layer.bounds.size.width - size.width) / 2, y: (layer.bounds.size.height - size.height) / 2, width: size.width, height: size.height) square.frame = frame square.add(animation, forKey: "animation") layer.addSublayer(square) } func createRotateXTransform(angle: CGFloat) -> CATransform3D { var transform = CATransform3DMakeRotation(angle, 1, 0, 0) transform.m34 = CGFloat(-1) / 100 return transform } func createRotateYTransform(angle: CGFloat) -> CATransform3D { var transform = CATransform3DMakeRotation(angle, 0, 1, 0) transform.m34 = CGFloat(-1) / 100 return transform } } #endif