jverkoey

/*
 Copyright 2016-present The Material Motion Authors. All Rights Reserved.

 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at

 http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing, software

jverkoey

#if (arch(i386) || arch(x86_64)) && os(iOS)
  @_silgen_name("UIAnimationDragCoefficient") func UIAnimationDragCoefficient() -> Float
  func simulatorDragCoefficient() -> CGFloat {
    let drag = UIAnimationDragCoefficient()
    if drag > 1 {
      return CGFloat(drag)
    }
    return 1
  }

jverkoey

# Streams

let drag$ = ....
aggregator.write(drag$.x().rubberBanded(0, 100),
                 to: propertyOf(view).center)

# Plan/Performer

jverkoey

/*
 Copyright 2016-present The Material Motion Authors. All Rights Reserved.

 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at

 http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing, software

jverkoey

/*
 Copyright 2016-present The Material Motion Authors. All Rights Reserved.

 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at

 http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing, software

jverkoey

MotionAggregator is active: true
Child is active: true
tween(duration: 5.0, values: UIExtendedSRGBColorSpace 1 0 0 1, UIExtendedSRGBColorSpace 1 0 1 1, UIExtendedSRGBColorSpace 1 0 0 1)
  -> <CAKeyframeAnimation:0x608000223060; keyPath = backgroundColor; values = (
    "<CGColor 0x6000000a8340> [<CGColorSpace 0x600000429520> (kCGColorSpaceICCBased; kCGColorSpaceModelRGB; sRGB IEC61966-2.1; extended range)] ( 1 0 0 1 )",
    "<CGColor 0x6000000a8640> [<CGColorSpace 0x600000429520> (kCGColorSpaceICCBased; kCGColorSpaceModelRGB; sRGB IEC61966-2.1; extended range)] ( 1 0 1 1 )",
    "<CGColor 0x6000000a8340> [<CGColorSpace 0x600000429520> (kCGColorSpaceICCBased; kCGColorSpaceModelRGB; sRGB IEC61966-2.1; extended range)] ( 1 0 0 1 )"
); duration = 5> '6591F5BE-E262-447D-A04B-6967BAF32095' to CALayer::0x60000003e940.backgroundColor
springTo(destination: 400.0, source: UIView::0x7f90b59143c0, property: centerY)
  -> 333.5 to UIView::0x7f90b59143c0.centerY

jverkoey

let tween = Tween<CGFloat>(
  duration: 0.3,
  values: [0, 5],
  timeline: timeline
)

runtime.addPlan(tween,
                to: layer,
                property: tweenPropertyOf(layer).position)

jverkoey

/*
 Copyright 2016-present The Material Motion Authors. All Rights Reserved.

 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at

 http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing, software

jverkoey

public typealias MaterialRestableStream<T> = (stream: MaterialStream<T>, atRest: MaterialStream<Bool>)

public func drag(_ pan: UIPanGestureRecognizer) -> MaterialRestableStream<CGPoint> {
  return (MaterialStream<CGPoint>(named: #function) { observer in
    let dragObserver = DragObserver {
      observer.next(pan.location(in: pan.view!.superview!))
    }

    pan.addTarget(dragObserver, action: #selector(DragObserver.didPan))

jverkoey

public class MaterialRestableStream<T>: MaterialStream<T> {
  public var atRest = true {
    didSet {
      if atRest != oldValue {
        for listener in listeners {
          (listener as! AnyObserver<Bool>).next(atRest)
        }
      }
    }