MetalByTutorials/10-trees-and-fog/starter/post-processing.playground/Sources/MetalView.swift

57 lines
2.3 KiB
Swift
Executable File

/**
* Copyright (c) 2018 Razeware LLC
*
* 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.
*
* Notwithstanding the foregoing, you may not use, copy, modify, merge, publish,
* distribute, sublicense, create a derivative work, and/or sell copies of the
* Software in any work that is designed, intended, or marketed for pedagogical or
* instructional purposes related to programming, coding, application development,
* or information technology. Permission for such use, copying, modification,
* merger, publication, distribution, sublicensing, creation of derivative works,
* or sale is expressly withheld.
*
* 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 MetalKit
public class MetalView: MTKView {
public var renderer: Renderer?
public required init(coder: NSCoder) {
fatalError()
}
public override init(frame: NSRect, device: MTLDevice?) {
super.init(frame: frame, device: device)
let pan = NSPanGestureRecognizer(target: self, action: #selector(handlePan(gesture:)))
addGestureRecognizer(pan)
}
@objc public func handlePan(gesture: NSPanGestureRecognizer) {
let translation = gesture.translation(in: self)
renderer?.rotateUsing(translation: translation)
gesture.setTranslation(.zero, in: self)
}
public override func scrollWheel(with event: NSEvent) {
renderer?.zoomUsing(delta: event.deltaY)
}
}