cd0b413706
Moves everything Camera related into `core/` / `Core/` so that it is better encapsulated from React Native.
Benefits:
1. Code is much better organized. Should be easier for collaborators now, and cleaner codebase for me.
2. Locking is fully atomically as you can now only configure the session through a lock/Mutex which is batch-overridable
* On iOS, this makes Camera startup time **MUCH** faster, I measured speedups from **1.5 seconds** to only **240 milliseconds** since we only lock/commit once! 🚀
* On Android, this fixes a few out-of-sync/concurrency issues like "Capture Request contains unconfigured Input/Output Surface!" since it is now a single lock-operation! 💪
3. It is easier to integrate VisionCamera outside of React Native (e.g. Native iOS Apps, NativeScript, Flutter, etc)
With this PR, VisionCamera V3 is up to **7x** faster than V2
40 lines
1000 B
Swift
40 lines
1000 B
Swift
//
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// CameraView+Zoom.swift
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// mrousavy
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//
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// Created by Marc Rousavy on 18.12.20.
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// Copyright © 2020 mrousavy. All rights reserved.
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//
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import Foundation
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import UIKit
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extension CameraView {
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@objc
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final func onPinch(_ gesture: UIPinchGestureRecognizer) {
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let scale = max(min(gesture.scale * pinchScaleOffset, cameraSession.maxZoom), CGFloat(1.0))
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if gesture.state == .ended {
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pinchScaleOffset = scale
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return
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}
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// Update zoom on Camera
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cameraSession.configure { configuration in
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configuration.zoom = scale
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}
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}
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func addPinchGestureRecognizer() {
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removePinchGestureRecognizer()
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pinchGestureRecognizer = UIPinchGestureRecognizer(target: self, action: #selector(onPinch(_:)))
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addGestureRecognizer(pinchGestureRecognizer!)
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}
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func removePinchGestureRecognizer() {
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if let pinchGestureRecognizer = pinchGestureRecognizer {
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removeGestureRecognizer(pinchGestureRecognizer)
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self.pinchGestureRecognizer = nil
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}
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}
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}
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