Chapter 6.3 of the Cosmos tutorial
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// Copyright © 2016 C4 | |
// | |
// 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. | |
import UIKit | |
public class StarsSmall : InfiniteScrollView { | |
//MARK: - | |
//MARK: Initialization | |
convenience public init(frame: CGRect, speed: CGFloat) { | |
self.init(frame: frame) | |
//grabs the current order | |
var signOrder = AstrologicalSignProvider.sharedInstance.order | |
//sets the contents size to signCount * single size, adds canvas.width to account for overlap to hide snap | |
contentSize = CGSizeMake(frame.size.width * (1.0 + CGFloat(signOrder.count) * gapBetweenSigns), 1.0) | |
//appends a copy of the first sign to the end of the order | |
signOrder.append(signOrder[0]) | |
//adds all the small stars to the view | |
for i in 0..<signOrder.count { | |
//calculates the offset | |
let dx = Double(i) * Double(frame.size.width * speed * gapBetweenSigns) | |
//creates a transform | |
let t = Transform.makeTranslation(Vector(x: Double(center.x) + dx, y: Double(center.y), z: 0)) | |
//grabs the current sign | |
if let sign = AstrologicalSignProvider.sharedInstance.get(signOrder[i]) { | |
//creates a new small star for each point | |
for point in sign.small { | |
let img = Image("6smallStar")! | |
var p = point | |
p.transform(t) | |
img.center = p | |
add(img) | |
} | |
} | |
} | |
} | |
} |
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