mirror of
https://github.com/Swiftgram/Telegram-iOS.git
synced 2025-06-16 05:55:20 +00:00
660 lines
26 KiB
Swift
660 lines
26 KiB
Swift
import Foundation
|
|
import UIKit
|
|
import Display
|
|
import SwiftSignalKit
|
|
import TelegramCore
|
|
import AnimatedStickerNode
|
|
import TelegramAnimatedStickerNode
|
|
import StickerResources
|
|
import AccountContext
|
|
|
|
public final class DrawingStickerEntity: DrawingEntity, Codable {
|
|
private enum CodingKeys: String, CodingKey {
|
|
case uuid
|
|
case isAnimated
|
|
case file
|
|
case referenceDrawingSize
|
|
case position
|
|
case scale
|
|
case rotation
|
|
case mirrored
|
|
}
|
|
|
|
public let uuid: UUID
|
|
public let isAnimated: Bool
|
|
public let file: TelegramMediaFile
|
|
|
|
public var referenceDrawingSize: CGSize
|
|
public var position: CGPoint
|
|
public var scale: CGFloat
|
|
public var rotation: CGFloat
|
|
public var mirrored: Bool
|
|
|
|
public var color: DrawingColor = DrawingColor.clear
|
|
public var lineWidth: CGFloat = 0.0
|
|
|
|
public var center: CGPoint {
|
|
return self.position
|
|
}
|
|
|
|
public var baseSize: CGSize {
|
|
let size = max(10.0, min(self.referenceDrawingSize.width, self.referenceDrawingSize.height) * 0.4)
|
|
return CGSize(width: size, height: size)
|
|
}
|
|
|
|
init(file: TelegramMediaFile) {
|
|
self.uuid = UUID()
|
|
self.isAnimated = file.isAnimatedSticker
|
|
|
|
self.file = file
|
|
|
|
self.referenceDrawingSize = .zero
|
|
self.position = CGPoint()
|
|
self.scale = 1.0
|
|
self.rotation = 0.0
|
|
self.mirrored = false
|
|
}
|
|
|
|
public init(from decoder: Decoder) throws {
|
|
let container = try decoder.container(keyedBy: CodingKeys.self)
|
|
self.uuid = try container.decode(UUID.self, forKey: .uuid)
|
|
self.isAnimated = try container.decode(Bool.self, forKey: .isAnimated)
|
|
self.file = try container.decode(TelegramMediaFile.self, forKey: .file)
|
|
self.referenceDrawingSize = try container.decode(CGSize.self, forKey: .referenceDrawingSize)
|
|
self.position = try container.decode(CGPoint.self, forKey: .position)
|
|
self.scale = try container.decode(CGFloat.self, forKey: .scale)
|
|
self.rotation = try container.decode(CGFloat.self, forKey: .rotation)
|
|
self.mirrored = try container.decode(Bool.self, forKey: .mirrored)
|
|
}
|
|
|
|
public func encode(to encoder: Encoder) throws {
|
|
var container = encoder.container(keyedBy: CodingKeys.self)
|
|
try container.encode(self.uuid, forKey: .uuid)
|
|
try container.encode(self.isAnimated, forKey: .isAnimated)
|
|
try container.encode(self.file, forKey: .file)
|
|
try container.encode(self.referenceDrawingSize, forKey: .referenceDrawingSize)
|
|
try container.encode(self.position, forKey: .position)
|
|
try container.encode(self.scale, forKey: .scale)
|
|
try container.encode(self.rotation, forKey: .rotation)
|
|
try container.encode(self.mirrored, forKey: .mirrored)
|
|
}
|
|
|
|
public func duplicate() -> DrawingEntity {
|
|
let newEntity = DrawingStickerEntity(file: self.file)
|
|
newEntity.referenceDrawingSize = self.referenceDrawingSize
|
|
newEntity.position = self.position
|
|
newEntity.scale = self.scale
|
|
newEntity.rotation = self.rotation
|
|
newEntity.mirrored = self.mirrored
|
|
return newEntity
|
|
}
|
|
|
|
public weak var currentEntityView: DrawingEntityView?
|
|
public func makeView(context: AccountContext) -> DrawingEntityView {
|
|
let entityView = DrawingStickerEntityView(context: context, entity: self)
|
|
self.currentEntityView = entityView
|
|
return entityView
|
|
}
|
|
|
|
public func prepareForRender() {
|
|
}
|
|
}
|
|
|
|
final class DrawingStickerEntityView: DrawingEntityView {
|
|
private var stickerEntity: DrawingStickerEntity {
|
|
return self.entity as! DrawingStickerEntity
|
|
}
|
|
|
|
var started: ((Double) -> Void)?
|
|
|
|
private var currentSize: CGSize?
|
|
private var dimensions: CGSize?
|
|
|
|
private let imageNode: TransformImageNode
|
|
private var animationNode: AnimatedStickerNode?
|
|
|
|
private var didSetUpAnimationNode = false
|
|
private let stickerFetchedDisposable = MetaDisposable()
|
|
private let cachedDisposable = MetaDisposable()
|
|
|
|
private var isVisible = true
|
|
private var isPlaying = false
|
|
|
|
init(context: AccountContext, entity: DrawingStickerEntity) {
|
|
self.imageNode = TransformImageNode()
|
|
|
|
super.init(context: context, entity: entity)
|
|
|
|
self.addSubview(self.imageNode.view)
|
|
|
|
self.setup()
|
|
}
|
|
|
|
required init?(coder: NSCoder) {
|
|
fatalError("init(coder:) has not been implemented")
|
|
}
|
|
|
|
deinit {
|
|
self.stickerFetchedDisposable.dispose()
|
|
self.cachedDisposable.dispose()
|
|
}
|
|
|
|
private var file: TelegramMediaFile {
|
|
return (self.entity as! DrawingStickerEntity).file
|
|
}
|
|
|
|
private func setup() {
|
|
if let dimensions = self.file.dimensions {
|
|
if self.file.isAnimatedSticker || self.file.isVideoSticker || self.file.mimeType == "video/webm" {
|
|
if self.animationNode == nil {
|
|
let animationNode = DefaultAnimatedStickerNodeImpl()
|
|
animationNode.autoplay = false
|
|
self.animationNode = animationNode
|
|
animationNode.started = { [weak self, weak animationNode] in
|
|
self?.imageNode.isHidden = true
|
|
|
|
if let animationNode = animationNode {
|
|
let _ = (animationNode.status
|
|
|> take(1)
|
|
|> deliverOnMainQueue).start(next: { [weak self] status in
|
|
self?.started?(status.duration)
|
|
})
|
|
}
|
|
}
|
|
self.addSubnode(animationNode)
|
|
}
|
|
let dimensions = self.file.dimensions ?? PixelDimensions(width: 512, height: 512)
|
|
self.imageNode.setSignal(chatMessageAnimatedSticker(postbox: self.context.account.postbox, userLocation: .other, file: self.file, small: false, size: dimensions.cgSize.aspectFitted(CGSize(width: 256.0, height: 256.0))))
|
|
self.stickerFetchedDisposable.set(freeMediaFileResourceInteractiveFetched(account: self.context.account, userLocation: .other, fileReference: stickerPackFileReference(self.file), resource: self.file.resource).start())
|
|
} else {
|
|
if let animationNode = self.animationNode {
|
|
animationNode.visibility = false
|
|
self.animationNode = nil
|
|
animationNode.removeFromSupernode()
|
|
self.imageNode.isHidden = false
|
|
self.didSetUpAnimationNode = false
|
|
}
|
|
self.imageNode.setSignal(chatMessageSticker(account: self.context.account, userLocation: .other, file: self.file, small: false, synchronousLoad: false))
|
|
self.stickerFetchedDisposable.set(freeMediaFileResourceInteractiveFetched(account: self.context.account, userLocation: .other, fileReference: stickerPackFileReference(self.file), resource: chatMessageStickerResource(file: self.file, small: false)).start())
|
|
}
|
|
|
|
self.dimensions = dimensions.cgSize
|
|
self.setNeedsLayout()
|
|
}
|
|
}
|
|
|
|
override func play() {
|
|
self.isVisible = true
|
|
self.applyVisibility()
|
|
}
|
|
|
|
override func pause() {
|
|
self.isVisible = false
|
|
self.applyVisibility()
|
|
}
|
|
|
|
override func seek(to timestamp: Double) {
|
|
self.isVisible = false
|
|
self.isPlaying = false
|
|
self.animationNode?.seekTo(.timestamp(timestamp))
|
|
}
|
|
|
|
override func resetToStart() {
|
|
self.isVisible = false
|
|
self.isPlaying = false
|
|
self.animationNode?.seekTo(.timestamp(0.0))
|
|
}
|
|
|
|
override func updateVisibility(_ visibility: Bool) {
|
|
self.isVisible = visibility
|
|
self.applyVisibility()
|
|
}
|
|
|
|
private func applyVisibility() {
|
|
let isPlaying = self.isVisible
|
|
if self.isPlaying != isPlaying {
|
|
self.isPlaying = isPlaying
|
|
|
|
if isPlaying && !self.didSetUpAnimationNode {
|
|
self.didSetUpAnimationNode = true
|
|
let dimensions = self.file.dimensions ?? PixelDimensions(width: 512, height: 512)
|
|
let fittedDimensions = dimensions.cgSize.aspectFitted(CGSize(width: 384.0, height: 384.0))
|
|
let source = AnimatedStickerResourceSource(account: self.context.account, resource: self.file.resource, isVideo: self.file.isVideoSticker || self.file.mimeType == "video/webm")
|
|
self.animationNode?.setup(source: source, width: Int(fittedDimensions.width), height: Int(fittedDimensions.height), playbackMode: .loop, mode: .direct(cachePathPrefix: nil))
|
|
|
|
self.cachedDisposable.set((source.cachedDataPath(width: 384, height: 384)
|
|
|> deliverOn(Queue.concurrentDefaultQueue())).start())
|
|
}
|
|
self.animationNode?.visibility = isPlaying
|
|
}
|
|
}
|
|
|
|
private var didApplyVisibility = false
|
|
override func layoutSubviews() {
|
|
super.layoutSubviews()
|
|
|
|
let size = self.bounds.size
|
|
|
|
if size.width > 0 && self.currentSize != size {
|
|
self.currentSize = size
|
|
|
|
let sideSize: CGFloat = size.width
|
|
let boundingSize = CGSize(width: sideSize, height: sideSize)
|
|
|
|
if let dimensions = self.dimensions {
|
|
let imageSize = dimensions.aspectFitted(boundingSize)
|
|
self.imageNode.asyncLayout()(TransformImageArguments(corners: ImageCorners(), imageSize: imageSize, boundingSize: imageSize, intrinsicInsets: UIEdgeInsets()))()
|
|
self.imageNode.frame = CGRect(origin: CGPoint(x: floor((size.width - imageSize.width) / 2.0), y: (size.height - imageSize.height) / 2.0), size: imageSize)
|
|
if let animationNode = self.animationNode {
|
|
animationNode.frame = CGRect(origin: CGPoint(x: floor((size.width - imageSize.width) / 2.0), y: (size.height - imageSize.height) / 2.0), size: imageSize)
|
|
animationNode.updateLayout(size: imageSize)
|
|
|
|
if !self.didApplyVisibility {
|
|
self.didApplyVisibility = true
|
|
self.applyVisibility()
|
|
}
|
|
}
|
|
self.update(animated: false)
|
|
}
|
|
}
|
|
}
|
|
|
|
override func update(animated: Bool) {
|
|
guard let dimensions = self.stickerEntity.file.dimensions?.cgSize else {
|
|
return
|
|
}
|
|
self.center = self.stickerEntity.position
|
|
|
|
let size = self.stickerEntity.baseSize
|
|
|
|
self.bounds = CGRect(origin: .zero, size: dimensions.aspectFitted(size))
|
|
self.transform = CGAffineTransformScale(CGAffineTransformMakeRotation(self.stickerEntity.rotation), self.stickerEntity.scale, self.stickerEntity.scale)
|
|
|
|
var transform = CATransform3DIdentity
|
|
|
|
if self.stickerEntity.mirrored {
|
|
transform = CATransform3DRotate(transform, .pi, 0.0, 1.0, 0.0)
|
|
transform.m34 = -1.0 / self.imageNode.frame.width
|
|
}
|
|
|
|
if animated {
|
|
UIView.animate(withDuration: 0.25, delay: 0.0) {
|
|
self.imageNode.transform = transform
|
|
self.animationNode?.transform = transform
|
|
}
|
|
} else {
|
|
self.imageNode.transform = transform
|
|
self.animationNode?.transform = transform
|
|
}
|
|
|
|
super.update(animated: animated)
|
|
}
|
|
|
|
override func updateSelectionView() {
|
|
guard let selectionView = self.selectionView as? DrawingStickerEntititySelectionView else {
|
|
return
|
|
}
|
|
self.pushIdentityTransformForMeasurement()
|
|
|
|
selectionView.transform = .identity
|
|
let bounds = self.selectionBounds
|
|
let center = bounds.center
|
|
|
|
let scale = self.superview?.superview?.layer.value(forKeyPath: "transform.scale.x") as? CGFloat ?? 1.0
|
|
selectionView.center = self.convert(center, to: selectionView.superview)
|
|
|
|
selectionView.bounds = CGRect(origin: .zero, size: CGSize(width: (bounds.width * self.stickerEntity.scale) * scale + selectionView.selectionInset * 2.0, height: (bounds.height * self.stickerEntity.scale) * scale + selectionView.selectionInset * 2.0))
|
|
selectionView.transform = CGAffineTransformMakeRotation(self.stickerEntity.rotation)
|
|
|
|
self.popIdentityTransformForMeasurement()
|
|
}
|
|
|
|
override func makeSelectionView() -> DrawingEntitySelectionView {
|
|
if let selectionView = self.selectionView {
|
|
return selectionView
|
|
}
|
|
let selectionView = DrawingStickerEntititySelectionView()
|
|
selectionView.entityView = self
|
|
return selectionView
|
|
}
|
|
}
|
|
|
|
final class DrawingStickerEntititySelectionView: DrawingEntitySelectionView, UIGestureRecognizerDelegate {
|
|
private let border = SimpleShapeLayer()
|
|
private let leftHandle = SimpleShapeLayer()
|
|
private let rightHandle = SimpleShapeLayer()
|
|
|
|
private var panGestureRecognizer: UIPanGestureRecognizer!
|
|
|
|
override init(frame: CGRect) {
|
|
let handleBounds = CGRect(origin: .zero, size: entitySelectionViewHandleSize)
|
|
let handles = [
|
|
self.leftHandle,
|
|
self.rightHandle
|
|
]
|
|
|
|
super.init(frame: frame)
|
|
|
|
self.backgroundColor = .clear
|
|
self.isOpaque = false
|
|
|
|
self.border.lineCap = .round
|
|
self.border.fillColor = UIColor.clear.cgColor
|
|
self.border.strokeColor = UIColor(rgb: 0xffffff, alpha: 0.5).cgColor
|
|
self.border.shadowColor = UIColor.black.cgColor
|
|
self.border.shadowRadius = 1.0
|
|
self.border.shadowOpacity = 0.5
|
|
self.border.shadowOffset = CGSize()
|
|
self.layer.addSublayer(self.border)
|
|
|
|
for handle in handles {
|
|
handle.bounds = handleBounds
|
|
handle.fillColor = UIColor(rgb: 0x0a60ff).cgColor
|
|
handle.strokeColor = UIColor(rgb: 0xffffff).cgColor
|
|
handle.rasterizationScale = UIScreen.main.scale
|
|
handle.shouldRasterize = true
|
|
|
|
self.layer.addSublayer(handle)
|
|
}
|
|
|
|
let panGestureRecognizer = UIPanGestureRecognizer(target: self, action: #selector(self.handlePan(_:)))
|
|
panGestureRecognizer.delegate = self
|
|
self.addGestureRecognizer(panGestureRecognizer)
|
|
self.panGestureRecognizer = panGestureRecognizer
|
|
|
|
self.snapTool.onSnapXUpdated = { [weak self] snapped in
|
|
if let strongSelf = self, let entityView = strongSelf.entityView {
|
|
entityView.onSnapToXAxis(snapped)
|
|
}
|
|
}
|
|
|
|
self.snapTool.onSnapYUpdated = { [weak self] snapped in
|
|
if let strongSelf = self, let entityView = strongSelf.entityView {
|
|
entityView.onSnapToYAxis(snapped)
|
|
}
|
|
}
|
|
}
|
|
|
|
required init?(coder: NSCoder) {
|
|
fatalError("init(coder:) has not been implemented")
|
|
}
|
|
|
|
var scale: CGFloat = 1.0 {
|
|
didSet {
|
|
self.setNeedsLayout()
|
|
}
|
|
}
|
|
|
|
override var selectionInset: CGFloat {
|
|
return 18.0
|
|
}
|
|
|
|
override func gestureRecognizerShouldBegin(_ gestureRecognizer: UIGestureRecognizer) -> Bool {
|
|
return true
|
|
}
|
|
|
|
private let snapTool = DrawingEntitySnapTool()
|
|
|
|
private var currentHandle: CALayer?
|
|
@objc private func handlePan(_ gestureRecognizer: UIPanGestureRecognizer) {
|
|
guard let entityView = self.entityView, let entity = entityView.entity as? DrawingStickerEntity else {
|
|
return
|
|
}
|
|
let location = gestureRecognizer.location(in: self)
|
|
|
|
|
|
switch gestureRecognizer.state {
|
|
case .began:
|
|
self.snapTool.maybeSkipFromStart(entityView: entityView, position: entity.position)
|
|
|
|
if let sublayers = self.layer.sublayers {
|
|
for layer in sublayers {
|
|
if layer.frame.contains(location) {
|
|
self.currentHandle = layer
|
|
return
|
|
}
|
|
}
|
|
}
|
|
self.currentHandle = self.layer
|
|
case .changed:
|
|
let delta = gestureRecognizer.translation(in: entityView.superview)
|
|
let parentLocation = gestureRecognizer.location(in: self.superview)
|
|
let velocity = gestureRecognizer.velocity(in: entityView.superview)
|
|
|
|
var updatedPosition = entity.position
|
|
var updatedScale = entity.scale
|
|
var updatedRotation = entity.rotation
|
|
if self.currentHandle === self.leftHandle || self.currentHandle === self.rightHandle {
|
|
var deltaX = gestureRecognizer.translation(in: self).x
|
|
if self.currentHandle === self.leftHandle {
|
|
deltaX *= -1.0
|
|
}
|
|
let scaleDelta = (self.bounds.size.width + deltaX * 2.0) / self.bounds.size.width
|
|
updatedScale *= scaleDelta
|
|
|
|
let deltaAngle: CGFloat
|
|
if self.currentHandle === self.leftHandle {
|
|
deltaAngle = atan2(self.center.y - parentLocation.y, self.center.x - parentLocation.x)
|
|
} else {
|
|
deltaAngle = atan2(parentLocation.y - self.center.y, parentLocation.x - self.center.x)
|
|
}
|
|
updatedRotation = deltaAngle
|
|
} else if self.currentHandle === self.layer {
|
|
updatedPosition.x += delta.x
|
|
updatedPosition.y += delta.y
|
|
|
|
updatedPosition = self.snapTool.update(entityView: entityView, velocity: velocity, delta: delta, updatedPosition: updatedPosition)
|
|
}
|
|
|
|
entity.position = updatedPosition
|
|
entity.scale = updatedScale
|
|
entity.rotation = updatedRotation
|
|
entityView.update()
|
|
|
|
gestureRecognizer.setTranslation(.zero, in: entityView)
|
|
case .ended:
|
|
self.snapTool.reset()
|
|
case .cancelled:
|
|
self.snapTool.reset()
|
|
default:
|
|
break
|
|
}
|
|
}
|
|
|
|
override func handlePinch(_ gestureRecognizer: UIPinchGestureRecognizer) {
|
|
guard let entityView = self.entityView, let entity = entityView.entity as? DrawingStickerEntity else {
|
|
return
|
|
}
|
|
|
|
switch gestureRecognizer.state {
|
|
case .began, .changed:
|
|
let scale = gestureRecognizer.scale
|
|
entity.scale = entity.scale * scale
|
|
entityView.update()
|
|
|
|
gestureRecognizer.scale = 1.0
|
|
default:
|
|
break
|
|
}
|
|
}
|
|
|
|
override func handleRotate(_ gestureRecognizer: UIRotationGestureRecognizer) {
|
|
guard let entityView = self.entityView, let entity = entityView.entity as? DrawingStickerEntity else {
|
|
return
|
|
}
|
|
|
|
switch gestureRecognizer.state {
|
|
case .began, .changed:
|
|
let rotation = gestureRecognizer.rotation
|
|
entity.rotation += rotation
|
|
entityView.update()
|
|
|
|
gestureRecognizer.rotation = 0.0
|
|
default:
|
|
break
|
|
}
|
|
}
|
|
|
|
override func point(inside point: CGPoint, with event: UIEvent?) -> Bool {
|
|
return self.bounds.insetBy(dx: -22.0, dy: -22.0).contains(point)
|
|
}
|
|
|
|
override func layoutSubviews() {
|
|
let inset = self.selectionInset - 10.0
|
|
|
|
let bounds = CGRect(origin: .zero, size: CGSize(width: entitySelectionViewHandleSize.width / self.scale, height: entitySelectionViewHandleSize.height / self.scale))
|
|
let handleSize = CGSize(width: 9.0 / self.scale, height: 9.0 / self.scale)
|
|
let handlePath = CGPath(ellipseIn: CGRect(origin: CGPoint(x: (bounds.width - handleSize.width) / 2.0, y: (bounds.height - handleSize.height) / 2.0), size: handleSize), transform: nil)
|
|
let lineWidth = (1.0 + UIScreenPixel) / self.scale
|
|
|
|
let handles = [
|
|
self.leftHandle,
|
|
self.rightHandle
|
|
]
|
|
|
|
for handle in handles {
|
|
handle.path = handlePath
|
|
handle.bounds = bounds
|
|
handle.lineWidth = lineWidth
|
|
}
|
|
|
|
self.leftHandle.position = CGPoint(x: inset, y: self.bounds.midY)
|
|
self.rightHandle.position = CGPoint(x: self.bounds.maxX - inset, y: self.bounds.midY)
|
|
|
|
|
|
let radius = (self.bounds.width - inset * 2.0) / 2.0
|
|
let circumference: CGFloat = 2.0 * .pi * radius
|
|
let count = 10
|
|
let relativeDashLength: CGFloat = 0.25
|
|
let dashLength = circumference / CGFloat(count)
|
|
self.border.lineDashPattern = [dashLength * relativeDashLength, dashLength * relativeDashLength] as [NSNumber]
|
|
|
|
self.border.lineWidth = 2.0 / self.scale
|
|
self.border.path = UIBezierPath(ovalIn: CGRect(origin: CGPoint(x: inset, y: inset), size: CGSize(width: self.bounds.width - inset * 2.0, height: self.bounds.height - inset * 2.0))).cgPath
|
|
}
|
|
}
|
|
|
|
class DrawingEntitySnapTool {
|
|
private var xState: (skipped: CGFloat, waitForLeave: Bool)?
|
|
private var yState: (skipped: CGFloat, waitForLeave: Bool)?
|
|
|
|
private var rotationState: (skipped: CGFloat, waitForLeave: Bool)?
|
|
|
|
var onSnapXUpdated: (Bool) -> Void = { _ in }
|
|
var onSnapYUpdated: (Bool) -> Void = { _ in }
|
|
var onSnapRotationUpdated: (CGFloat?) -> Void = { _ in }
|
|
|
|
func reset() {
|
|
self.xState = nil
|
|
self.yState = nil
|
|
self.rotationState = nil
|
|
|
|
self.onSnapXUpdated(false)
|
|
self.onSnapYUpdated(false)
|
|
self.onSnapRotationUpdated(nil)
|
|
}
|
|
|
|
func maybeSkipFromStart(entityView: DrawingEntityView, position: CGPoint) {
|
|
self.xState = nil
|
|
self.yState = nil
|
|
|
|
let snapXDelta: CGFloat = (entityView.superview?.frame.width ?? 0.0) * 0.02
|
|
let snapYDelta: CGFloat = (entityView.superview?.frame.width ?? 0.0) * 0.02
|
|
|
|
if let snapLocation = (entityView.superview as? DrawingEntitiesView)?.getEntityCenterPosition() {
|
|
if position.x > snapLocation.x - snapXDelta && position.x < snapLocation.x + snapXDelta {
|
|
self.xState = (0.0, true)
|
|
}
|
|
|
|
if position.y > snapLocation.y - snapYDelta && position.y < snapLocation.y + snapYDelta {
|
|
self.yState = (0.0, true)
|
|
}
|
|
}
|
|
}
|
|
|
|
func update(entityView: DrawingEntityView, velocity: CGPoint, delta: CGPoint, updatedPosition: CGPoint) -> CGPoint {
|
|
var updatedPosition = updatedPosition
|
|
|
|
let snapXDelta: CGFloat = (entityView.superview?.frame.width ?? 0.0) * 0.02
|
|
let snapXVelocity: CGFloat = snapXDelta * 12.0
|
|
let snapXSkipTranslation: CGFloat = snapXDelta * 2.0
|
|
|
|
if abs(velocity.x) < snapXVelocity || self.xState?.waitForLeave == true {
|
|
if let snapLocation = (entityView.superview as? DrawingEntitiesView)?.getEntityCenterPosition() {
|
|
if let (skipped, waitForLeave) = self.xState {
|
|
if waitForLeave {
|
|
if updatedPosition.x > snapLocation.x - snapXDelta * 2.0 && updatedPosition.x < snapLocation.x + snapXDelta * 2.0 {
|
|
|
|
} else {
|
|
self.xState = nil
|
|
}
|
|
} else if abs(skipped) < snapXSkipTranslation {
|
|
self.xState = (skipped + delta.x, false)
|
|
updatedPosition.x = snapLocation.x
|
|
} else {
|
|
self.xState = (snapXSkipTranslation, true)
|
|
self.onSnapXUpdated(false)
|
|
}
|
|
} else {
|
|
if updatedPosition.x > snapLocation.x - snapXDelta && updatedPosition.x < snapLocation.x + snapXDelta {
|
|
self.xState = (0.0, false)
|
|
updatedPosition.x = snapLocation.x
|
|
self.onSnapXUpdated(true)
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
self.xState = nil
|
|
self.onSnapXUpdated(false)
|
|
}
|
|
|
|
let snapYDelta: CGFloat = (entityView.superview?.frame.width ?? 0.0) * 0.02
|
|
let snapYVelocity: CGFloat = snapYDelta * 12.0
|
|
let snapYSkipTranslation: CGFloat = snapYDelta * 2.0
|
|
|
|
if abs(velocity.y) < snapYVelocity || self.yState?.waitForLeave == true {
|
|
if let snapLocation = (entityView.superview as? DrawingEntitiesView)?.getEntityCenterPosition() {
|
|
if let (skipped, waitForLeave) = self.yState {
|
|
if waitForLeave {
|
|
if updatedPosition.y > snapLocation.y - snapYDelta * 2.0 && updatedPosition.y < snapLocation.y + snapYDelta * 2.0 {
|
|
|
|
} else {
|
|
self.yState = nil
|
|
}
|
|
} else if abs(skipped) < snapYSkipTranslation {
|
|
self.yState = (skipped + delta.y, false)
|
|
updatedPosition.y = snapLocation.y
|
|
} else {
|
|
self.yState = (snapYSkipTranslation, true)
|
|
self.onSnapYUpdated(false)
|
|
}
|
|
} else {
|
|
if updatedPosition.y > snapLocation.y - snapYDelta && updatedPosition.y < snapLocation.y + snapYDelta {
|
|
self.yState = (0.0, false)
|
|
updatedPosition.y = snapLocation.y
|
|
self.onSnapYUpdated(true)
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
self.yState = nil
|
|
self.onSnapYUpdated(false)
|
|
}
|
|
|
|
return updatedPosition
|
|
}
|
|
|
|
private let snapRotations: [CGFloat] = [0.0, .pi / 4.0, .pi / 2.0, .pi * 1.5,]
|
|
func maybeSkipFromStart(entityView: DrawingEntityView, rotation: CGFloat) {
|
|
self.rotationState = nil
|
|
|
|
let snapDelta: CGFloat = 0.087
|
|
for snapRotation in self.snapRotations {
|
|
if rotation > snapRotation - snapDelta && rotation < snapRotation + snapDelta {
|
|
self.rotationState = (0.0, true)
|
|
break
|
|
}
|
|
}
|
|
}
|
|
}
|