mirror of
https://github.com/Swiftgram/Telegram-iOS.git
synced 2025-06-16 05:55:20 +00:00
548 lines
21 KiB
Swift
548 lines
21 KiB
Swift
import Foundation
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import UIKit
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import Display
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import AsyncDisplayKit
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import ComponentFlow
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import STCMeshView
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private final class FPSView: UIView {
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private var lastTimestamp: Double?
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private var counter: Int = 0
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private var fpsValue: Int?
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private var fpsString: NSAttributedString?
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override init(frame: CGRect) {
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super.init(frame: frame)
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self.layer.anchorPoint = CGPoint()
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self.backgroundColor = .black
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}
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required init?(coder: NSCoder) {
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fatalError("init(coder:) has not been implemented")
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}
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func update() {
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self.counter += 1
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let timestamp = CACurrentMediaTime()
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let deltaTime: Double
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if let lastTimestamp = self.lastTimestamp {
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deltaTime = timestamp - lastTimestamp
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} else {
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deltaTime = 1.0 / 60.0
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self.lastTimestamp = timestamp
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}
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if deltaTime >= 1.0 {
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let fpsValue = Int(Double(self.counter) / deltaTime)
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if self.fpsValue != fpsValue {
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self.fpsValue = fpsValue
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let fpsString = NSAttributedString(string: "\(fpsValue)", attributes: [.foregroundColor: UIColor.white])
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self.bounds = fpsString.boundingRect(with: CGSize(width: 100.0, height: 100.0), context: nil).integral
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self.fpsString = fpsString
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self.setNeedsDisplay()
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}
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self.counter = 0
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self.lastTimestamp = timestamp
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}
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}
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override func draw(_ rect: CGRect) {
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guard let fpsString = self.fpsString else {
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return
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}
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fpsString.draw(at: CGPoint())
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}
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}
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private extension CGPoint {
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static func -(lhs: CGPoint, rhs: CGPoint) -> CGPoint {
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return CGPoint(x: lhs.x - rhs.x, y: lhs.y - rhs.y)
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}
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static func +(lhs: CGPoint, rhs: CGPoint) -> CGPoint {
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return CGPoint(x: lhs.x + rhs.x, y: lhs.y + rhs.y)
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}
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static func *(lhs: CGPoint, rhs: CGFloat) -> CGPoint {
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return CGPoint(x: lhs.x * rhs, y: lhs.y * rhs)
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}
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}
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private func length(_ v: CGPoint) -> CGFloat {
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return sqrt(v.x * v.x + v.y * v.y)
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}
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private func normalize(_ v: CGPoint) -> CGPoint {
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let len = length(v)
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return CGPoint(x: v.x / len, y: v.y / len)
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}
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private struct RippleParams {
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var amplitude: CGFloat
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var frequency: CGFloat
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var decay: CGFloat
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var speed: CGFloat
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init(amplitude: CGFloat, frequency: CGFloat, decay: CGFloat, speed: CGFloat) {
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self.amplitude = amplitude
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self.frequency = frequency
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self.decay = decay
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self.speed = speed
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}
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}
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private func rippleOffset(
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position: CGPoint,
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origin: CGPoint,
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time: CGFloat,
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params: RippleParams
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) -> CGPoint {
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// The distance of the current pixel position from `origin`.
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let distance: CGFloat = length(position - origin)
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if distance < 1.0 {
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return position
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}
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// The amount of time it takes for the ripple to arrive at the current pixel position.
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let delay = distance / params.speed
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// Adjust for delay, clamp to 0.
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var time = time
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time -= delay
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time = max(0.0, time)
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// The ripple is a sine wave that Metal scales by an exponential decay
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// function.
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var rippleAmount = params.amplitude * sin(params.frequency * time) * exp(-params.decay * time)
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let absRippleAmount = abs(rippleAmount)
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if rippleAmount < 0.0 {
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rippleAmount = -absRippleAmount
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} else {
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rippleAmount = absRippleAmount
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}
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if distance <= 60.0 {
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rippleAmount = 0.4 * rippleAmount
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}
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// A vector of length `amplitude` that points away from position.
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let n: CGPoint
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n = normalize(position - origin)
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// Scale `n` by the ripple amount at the current pixel position and add it
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// to the current pixel position.
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//
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// This new position moves toward or away from `origin` based on the
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// sign and magnitude of `rippleAmount`.
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return n * (-rippleAmount)
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}
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func transformToFitQuad2(frame: CGRect, topLeft tl: CGPoint, topRight tr: CGPoint, bottomLeft bl: CGPoint, bottomRight br: CGPoint) -> (frame: CGRect, transform: CATransform3D) {
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let frameTopLeft = frame.origin
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let transform = rectToQuad(
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rect: CGRect(origin: CGPoint(), size: frame.size),
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quadTL: CGPoint(x: tl.x - frameTopLeft.x, y: tl.y - frameTopLeft.y),
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quadTR: CGPoint(x: tr.x - frameTopLeft.x, y: tr.y - frameTopLeft.y),
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quadBL: CGPoint(x: bl.x - frameTopLeft.x, y: bl.y - frameTopLeft.y),
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quadBR: CGPoint(x: br.x - frameTopLeft.x, y: br.y - frameTopLeft.y)
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)
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let anchorPoint = frame.origin
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let anchorOffset = CGPoint(x: anchorPoint.x - frame.origin.x, y: anchorPoint.y - frame.origin.y)
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let transPos = CATransform3DMakeTranslation(anchorOffset.x, anchorOffset.y, 0)
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let transNeg = CATransform3DMakeTranslation(-anchorOffset.x, -anchorOffset.y, 0)
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let fullTransform = CATransform3DConcat(CATransform3DConcat(transPos, transform), transNeg)
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return (frame, fullTransform)
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}
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func transformToFitQuad(frame: CGRect, topLeft tl: CGPoint, topRight tr: CGPoint, bottomLeft bl: CGPoint, bottomRight br: CGPoint) -> (frame: CGRect, transform: CATransform3D) {
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let boundingBox = boundingBox(forQuadWithTR: tr, tl: tl, bl: bl, br: br)
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let frameTopLeft = boundingBox.origin
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let transform = rectToQuad(
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rect: CGRect(origin: CGPoint(), size: frame.size),
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quadTL: CGPoint(x: tl.x - frameTopLeft.x, y: tl.y - frameTopLeft.y),
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quadTR: CGPoint(x: tr.x - frameTopLeft.x, y: tr.y - frameTopLeft.y),
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quadBL: CGPoint(x: bl.x - frameTopLeft.x, y: bl.y - frameTopLeft.y),
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quadBR: CGPoint(x: br.x - frameTopLeft.x, y: br.y - frameTopLeft.y)
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)
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// To account for anchor point, we must translate, transform, translate
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let anchorPoint = frame.center
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let anchorOffset = CGPoint(x: anchorPoint.x - boundingBox.origin.x, y: anchorPoint.y - boundingBox.origin.y)
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let transPos = CATransform3DMakeTranslation(anchorOffset.x, anchorOffset.y, 0)
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let transNeg = CATransform3DMakeTranslation(-anchorOffset.x, -anchorOffset.y, 0)
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let fullTransform = CATransform3DConcat(CATransform3DConcat(transPos, transform), transNeg)
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// Now we set our transform
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return (boundingBox, fullTransform)
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}
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private func boundingBox(forQuadWithTR tr: CGPoint, tl: CGPoint, bl: CGPoint, br: CGPoint) -> CGRect {
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var boundingBox = CGRect.zero
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let xmin = min(min(min(tr.x, tl.x), bl.x), br.x)
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let ymin = min(min(min(tr.y, tl.y), bl.y), br.y)
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let xmax = max(max(max(tr.x, tl.x), bl.x), br.x)
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let ymax = max(max(max(tr.y, tl.y), bl.y), br.y)
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boundingBox.origin.x = xmin
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boundingBox.origin.y = ymin
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boundingBox.size.width = xmax - xmin
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boundingBox.size.height = ymax - ymin
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return boundingBox
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}
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func rectToQuad(rect: CGRect, quadTL topLeft: CGPoint, quadTR topRight: CGPoint, quadBL bottomLeft: CGPoint, quadBR bottomRight: CGPoint) -> CATransform3D {
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return rectToQuad(rect: rect, quadTLX: topLeft.x, quadTLY: topLeft.y, quadTRX: topRight.x, quadTRY: topRight.y, quadBLX: bottomLeft.x, quadBLY: bottomLeft.y, quadBRX: bottomRight.x, quadBRY: bottomRight.y)
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}
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private func rectToQuad(rect: CGRect, quadTLX x1a: CGFloat, quadTLY y1a: CGFloat, quadTRX x2a: CGFloat, quadTRY y2a: CGFloat, quadBLX x3a: CGFloat, quadBLY y3a: CGFloat, quadBRX x4a: CGFloat, quadBRY y4a: CGFloat) -> CATransform3D {
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let X = rect.origin.x
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let Y = rect.origin.y
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let W = rect.size.width
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let H = rect.size.height
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let y21 = y2a - y1a
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let y32 = y3a - y2a
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let y43 = y4a - y3a
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let y14 = y1a - y4a
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let y31 = y3a - y1a
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let y42 = y4a - y2a
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let a = -H * (x2a * x3a * y14 + x2a * x4a * y31 - x1a * x4a * y32 + x1a * x3a * y42)
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let b = W * (x2a * x3a * y14 + x3a * x4a * y21 + x1a * x4a * y32 + x1a * x2a * y43)
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let c = H * X * (x2a * x3a * y14 + x2a * x4a * y31 - x1a * x4a * y32 + x1a * x3a * y42) - H * W * x1a * (x4a * y32 - x3a * y42 + x2a * y43) - W * Y * (x2a * x3a * y14 + x3a * x4a * y21 + x1a * x4a * y32 + x1a * x2a * y43)
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let d = H * (-x4a * y21 * y3a + x2a * y1a * y43 - x1a * y2a * y43 - x3a * y1a * y4a + x3a * y2a * y4a)
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let e = W * (x4a * y2a * y31 - x3a * y1a * y42 - x2a * y31 * y4a + x1a * y3a * y42)
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let f = -(W * (x4a * (Y * y2a * y31 + H * y1a * y32) - x3a * (H + Y) * y1a * y42 + H * x2a * y1a * y43 + x2a * Y * (y1a - y3a) * y4a + x1a * Y * y3a * (-y2a + y4a)) - H * X * (x4a * y21 * y3a - x2a * y1a * y43 + x3a * (y1a - y2a) * y4a + x1a * y2a * (-y3a + y4a)))
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let g = H * (x3a * y21 - x4a * y21 + (-x1a + x2a) * y43)
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let h = W * (-x2a * y31 + x4a * y31 + (x1a - x3a) * y42)
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var i = W * Y * (x2a * y31 - x4a * y31 - x1a * y42 + x3a * y42) + H * (X * (-(x3a * y21) + x4a * y21 + x1a * y43 - x2a * y43) + W * (-(x3a * y2a) + x4a * y2a + x2a * y3a - x4a * y3a - x2a * y4a + x3a * y4a))
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let kEpsilon = 0.0001
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if abs(i) < kEpsilon {
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i = kEpsilon * (i > 0 ? 1.0 : -1.0)
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}
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let transform = CATransform3D(
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m11: a / i, m12: d / i, m13: 0, m14: g / i,
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m21: b / i, m22: e / i, m23: 0, m24: h / i,
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m31: 0, m32: 0, m33: 1, m34: 0,
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m41: c / i, m42: f / i, m43: 0, m44: 1.0
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)
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return transform
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}
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public protocol SpaceWarpNode: ASDisplayNode {
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var contentNode: ASDisplayNode { get }
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func triggerRipple(at point: CGPoint)
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func update(size: CGSize, cornerRadius: CGFloat, transition: ComponentTransition)
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}
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open class SpaceWarpNodeImpl: ASDisplayNode, SpaceWarpNode {
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private final class Shockwave {
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let startPoint: CGPoint
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var timeValue: CGFloat = 0.0
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init(startPoint: CGPoint) {
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self.startPoint = startPoint
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}
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}
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public var contentNode: ASDisplayNode {
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return self.contentNodeSource
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}
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private let contentNodeSource: ASDisplayNode
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private let backgroundView: UIView
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private var currentCloneView: UIView?
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private var meshView: STCMeshView?
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private var gradientLayer: SimpleGradientLayer?
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private var debugLayers: [SimpleLayer] = []
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#if DEBUG
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private var fpsView: FPSView?
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#endif
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private var link: SharedDisplayLinkDriver.Link?
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private var shockwaves: [Shockwave] = []
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private var resolution: (x: Int, y: Int)?
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private var layoutParams: (size: CGSize, cornerRadius: CGFloat)?
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override public init() {
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self.contentNodeSource = ASDisplayNode()
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self.backgroundView = UIView()
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self.backgroundView.backgroundColor = .black
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#if DEBUG && false
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self.fpsView = FPSView(frame: CGRect(origin: CGPoint(x: 4.0, y: 40.0), size: CGSize()))
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#endif
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super.init()
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self.addSubnode(self.contentNodeSource)
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self.view.addSubview(self.backgroundView)
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#if DEBUG
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if let fpsView = self.fpsView {
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self.view.addSubview(fpsView)
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}
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#endif
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}
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public func triggerRipple(at point: CGPoint) {
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self.shockwaves.append(Shockwave(startPoint: point))
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if self.shockwaves.count > 8 {
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self.shockwaves.removeFirst()
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}
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if self.link == nil {
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self.link = SharedDisplayLinkDriver.shared.add(framesPerSecond: .max, { [weak self] deltaTime in
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guard let self else {
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return
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}
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for shockwave in self.shockwaves {
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shockwave.timeValue += deltaTime * (1.0 / CGFloat(UIView.animationDurationFactor()))
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}
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if let (size, cornerRadius) = self.layoutParams {
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self.update(size: size, cornerRadius: cornerRadius, transition: .immediate)
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}
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})
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}
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}
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private func updateGrid(resolutionX: Int, resolutionY: Int) {
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if let resolution = self.resolution, resolution.x == resolutionX, resolution.y == resolutionY {
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return
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}
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self.resolution = (resolutionX, resolutionY)
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if let meshView = self.meshView {
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self.meshView = nil
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meshView.removeFromSuperview()
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}
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for debugLayer in self.debugLayers {
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debugLayer.removeFromSuperlayer()
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}
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self.debugLayers.removeAll()
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let meshView = STCMeshView(frame: CGRect())
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self.meshView = meshView
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self.view.insertSubview(meshView, aboveSubview: self.backgroundView)
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meshView.instanceCount = resolutionX * resolutionY
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/*for _ in 0 ..< resolutionX * resolutionY {
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let debugLayer = SimpleLayer()
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debugLayer.backgroundColor = UIColor.red.cgColor
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debugLayer.opacity = 1.0
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self.layer.addSublayer(debugLayer)
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self.debugLayers.append(debugLayer)
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}*/
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}
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public func update(size: CGSize, cornerRadius: CGFloat, transition: ComponentTransition) {
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self.layoutParams = (size, cornerRadius)
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if size.width <= 0.0 || size.height <= 0.0 {
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return
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}
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self.contentNodeSource.frame = CGRect(origin: CGPoint(), size: size)
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transition.setFrame(view: self.backgroundView, frame: CGRect(origin: CGPoint(), size: size))
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let params = RippleParams(amplitude: 20.0, frequency: 15.0, decay: 8.0, speed: 1400.0)
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if let currentCloneView = self.currentCloneView {
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currentCloneView.removeFromSuperview()
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self.currentCloneView = nil
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}
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let maxEdge = (max(size.width, size.height) * 0.5) * 2.0
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let maxDistance = sqrt(maxEdge * maxEdge + maxEdge * maxEdge)
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let maxDelay = maxDistance / params.speed
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for i in (0 ..< self.shockwaves.count).reversed() {
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if self.shockwaves[i].timeValue >= maxDelay {
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self.shockwaves.remove(at: i)
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}
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}
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guard !self.shockwaves.isEmpty else {
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if let link = self.link {
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self.link = nil
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link.invalidate()
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}
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if let meshView = self.meshView {
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self.meshView = nil
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meshView.removeFromSuperview()
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}
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for debugLayer in self.debugLayers {
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debugLayer.removeFromSuperlayer()
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}
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self.debugLayers.removeAll()
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self.resolution = nil
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self.backgroundView.isHidden = true
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self.contentNodeSource.clipsToBounds = false
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self.contentNodeSource.layer.cornerRadius = 0.0
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if let gradientLayer = self.gradientLayer {
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self.gradientLayer = nil
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gradientLayer.removeFromSuperlayer()
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}
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return
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}
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self.backgroundView.isHidden = false
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self.contentNodeSource.clipsToBounds = true
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self.contentNodeSource.layer.cornerRadius = cornerRadius
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/*let gradientLayer: SimpleGradientLayer
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if let current = self.gradientLayer {
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gradientLayer = current
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} else {
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gradientLayer = SimpleGradientLayer()
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self.gradientLayer = gradientLayer
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self.layer.addSublayer(gradientLayer)
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gradientLayer.type = .radial
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gradientLayer.colors = [UIColor.clear.cgColor, UIColor.clear.cgColor, UIColor.white.cgColor, UIColor.clear.cgColor, UIColor.clear.cgColor]
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}
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gradientLayer.frame = CGRect(origin: CGPoint(), size: size)
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gradientLayer.startPoint = CGPoint(x: startPoint.x / size.width, y: startPoint.x / size.height)
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let radius = CGSize(width: maxEdge, height: maxEdge)
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let endEndPoint = CGPoint(x: (gradientLayer.startPoint.x + radius.width) * 1.0, y: (gradientLayer.startPoint.y + radius.height) * 1.0)
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gradientLayer.endPoint = endEndPoint
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let progress = max(0.0, min(1.0, self.timeValue / maxDelay))*/
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#if DEBUG
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if let fpsView = self.fpsView {
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fpsView.update()
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}
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#endif
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self.updateGrid(resolutionX: max(2, Int(size.width / 40.0)), resolutionY: max(2, Int(size.height / 40.0)))
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guard let resolution = self.resolution, let meshView = self.meshView else {
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return
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}
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if let cloneView = self.contentNodeSource.view.resizableSnapshotView(from: CGRect(origin: CGPoint(), size: size), afterScreenUpdates: false, withCapInsets: UIEdgeInsets()) {
|
|
self.currentCloneView = cloneView
|
|
meshView.contentView.addSubview(cloneView)
|
|
}
|
|
|
|
meshView.frame = CGRect(origin: CGPoint(), size: size)
|
|
|
|
let itemSize = CGSize(width: size.width / CGFloat(resolution.x), height: size.height / CGFloat(resolution.y))
|
|
|
|
var instanceBounds: [CGRect] = []
|
|
var instancePositions: [CGPoint] = []
|
|
var instanceTransforms: [CATransform3D] = []
|
|
|
|
for y in 0 ..< resolution.y {
|
|
for x in 0 ..< resolution.x {
|
|
let gridPosition = CGPoint(x: CGFloat(x) / CGFloat(resolution.x), y: CGFloat(y) / CGFloat(resolution.y))
|
|
|
|
let sourceRect = CGRect(origin: CGPoint(x: gridPosition.x * (size.width), y: gridPosition.y * (size.height)), size: itemSize)
|
|
|
|
let initialTopLeft = CGPoint(x: sourceRect.minX, y: sourceRect.minY)
|
|
let initialTopRight = CGPoint(x: sourceRect.maxX, y: sourceRect.minY)
|
|
let initialBottomLeft = CGPoint(x: sourceRect.minX, y: sourceRect.maxY)
|
|
let initialBottomRight = CGPoint(x: sourceRect.maxX, y: sourceRect.maxY)
|
|
|
|
var topLeft = initialTopLeft
|
|
var topRight = initialTopRight
|
|
var bottomLeft = initialBottomLeft
|
|
var bottomRight = initialBottomRight
|
|
|
|
for shockwave in self.shockwaves {
|
|
topLeft = topLeft + rippleOffset(position: initialTopLeft, origin: shockwave.startPoint, time: shockwave.timeValue, params: params)
|
|
topRight = topRight + rippleOffset(position: initialTopRight, origin: shockwave.startPoint, time: shockwave.timeValue, params: params)
|
|
bottomLeft = bottomLeft + rippleOffset(position: initialBottomLeft, origin: shockwave.startPoint, time: shockwave.timeValue, params: params)
|
|
bottomRight = bottomRight + rippleOffset(position: initialBottomRight, origin: shockwave.startPoint, time: shockwave.timeValue, params: params)
|
|
}
|
|
/*topLeft = transformCoordinate(position: topLeft, origin: startPoint, time: self.timeValue, params: params)
|
|
topRight = transformCoordinate(position: topRight, origin: startPoint, time: self.timeValue, params: params)
|
|
bottomLeft = transformCoordinate(position: bottomLeft, origin: startPoint, time: self.timeValue, params: params)
|
|
bottomRight = transformCoordinate(position: bottomRight, origin: startPoint, time: self.timeValue, params: params)*/
|
|
|
|
let distanceTopLeft = length(topLeft - initialTopLeft)
|
|
let distanceTopRight = length(topRight - initialTopRight)
|
|
let distanceBottomLeft = length(bottomLeft - initialBottomLeft)
|
|
let distanceBottomRight = length(bottomRight - initialBottomRight)
|
|
var maxDistance = max(distanceTopLeft, distanceTopRight)
|
|
maxDistance = max(maxDistance, distanceBottomLeft)
|
|
maxDistance = max(maxDistance, distanceBottomRight)
|
|
|
|
var (frame, transform) = transformToFitQuad2(frame: sourceRect, topLeft: topLeft, topRight: topRight, bottomLeft: bottomLeft, bottomRight: bottomRight)
|
|
|
|
if maxDistance <= 0.005 {
|
|
transform = CATransform3DIdentity
|
|
}
|
|
|
|
instanceBounds.append(frame)
|
|
instancePositions.append(frame.origin)
|
|
|
|
instanceTransforms.append(transform)
|
|
}
|
|
}
|
|
|
|
instanceBounds.withUnsafeMutableBufferPointer { buffer in
|
|
meshView.instanceBounds = buffer.baseAddress!
|
|
}
|
|
instancePositions.withUnsafeMutableBufferPointer { buffer in
|
|
meshView.instancePositions = buffer.baseAddress!
|
|
}
|
|
instanceTransforms.withUnsafeMutableBufferPointer { buffer in
|
|
meshView.instanceTransforms = buffer.baseAddress!
|
|
}
|
|
|
|
for i in 0 ..< self.debugLayers.count {
|
|
self.debugLayers[i].bounds = instanceBounds[i]
|
|
self.debugLayers[i].position = instancePositions[i]
|
|
self.debugLayers[i].transform = instanceTransforms[i]
|
|
}
|
|
}
|
|
|
|
override open func hitTest(_ point: CGPoint, with event: UIEvent?) -> UIView? {
|
|
if self.alpha.isZero || self.isHidden || !self.isUserInteractionEnabled {
|
|
return nil
|
|
}
|
|
for view in self.contentNode.view.subviews.reversed() {
|
|
if let result = view.hitTest(self.view.convert(point, to: view), with: event), result.isUserInteractionEnabled {
|
|
return result
|
|
}
|
|
}
|
|
|
|
let result = super.hitTest(point, with: event)
|
|
if result != self {
|
|
return result
|
|
} else {
|
|
return nil
|
|
}
|
|
}
|
|
}
|