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//
// NVActivityIndicatorAnimationBallZigZagDeflect.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 NVActivityIndicatorAnimationBallZigZagDeflect: NVActivityIndicatorAnimationDelegate {
func setUpAnimation(in layer: CALayer, size: CGSize, color: UIColor) {
let circleSize: CGFloat = size.width / 5
let duration: CFTimeInterval = 0.75
let deltaX = size.width / 2 - circleSize / 2
let deltaY = size.height / 2 - circleSize / 2
let frame = CGRect(x: (layer.bounds.size.width - circleSize) / 2, y: (layer.bounds.size.height - circleSize) / 2, width: circleSize, height: circleSize)
// Circle 1 animation
let animation = CAKeyframeAnimation(keyPath: "transform")
animation.keyTimes = [0, 0.33, 0.66, 1]
animation.timingFunction = CAMediaTimingFunction(name: .linear)
animation.values = [
NSValue(caTransform3D: CATransform3DMakeTranslation(0, 0, 0)),
NSValue(caTransform3D: CATransform3DMakeTranslation(-deltaX, -deltaY, 0)),
NSValue(caTransform3D: CATransform3DMakeTranslation(deltaX, -deltaY, 0)),
NSValue(caTransform3D: CATransform3DMakeTranslation(0, 0, 0))
]
animation.duration = duration
animation.repeatCount = HUGE
animation.autoreverses = true
animation.isRemovedOnCompletion = false
// Draw circle 1
circleAt(frame: frame, layer: layer, size: CGSize(width: circleSize, height: circleSize), color: color, animation: animation)
// Circle 2 animation
animation.values = [
NSValue(caTransform3D: CATransform3DMakeTranslation(0, 0, 0)),
NSValue(caTransform3D: CATransform3DMakeTranslation(deltaX, deltaY, 0)),
NSValue(caTransform3D: CATransform3DMakeTranslation(-deltaX, deltaY, 0)),
NSValue(caTransform3D: CATransform3DMakeTranslation(0, 0, 0))
]
// Draw circle 2
circleAt(frame: frame, layer: layer, size: CGSize(width: circleSize, height: circleSize), color: color, animation: animation)
}
func circleAt(frame: CGRect, layer: CALayer, size: CGSize, color: UIColor, animation: CAAnimation) {
let circle = NVActivityIndicatorShape.circle.layerWith(size: size, color: color)
circle.frame = frame
circle.add(animation, forKey: "animation")
layer.addSublayer(circle)
}
}
#endif