MetalByTutorials/11-tesselation-and-terrains/final/Tessellation/Tessellation-macOS/ViewControllerExtension.swift

63 lines
2.7 KiB
Swift

///// Copyright (c) 2019 Razeware LLC
///
/// Permission is hereby granted, free of charge, to any person obtaining a copy
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/// 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,
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/// Software in any work that is designed, intended, or marketed for pedagogical or
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import Cocoa
import simd
extension ViewController {
func addGestureRecognizer(to view: NSView) {
let pan = NSPanGestureRecognizer(target: self,
action: #selector(handlePan(gesture:)))
view.addGestureRecognizer(pan)
let click = NSClickGestureRecognizer(target: self,
action: #selector(handleClick(gesture:)))
view.addGestureRecognizer(click)
}
@objc func handlePan(gesture: NSPanGestureRecognizer) {
let translation = float2(Float(gesture.translation(in: gesture.view).x),
Float(gesture.translation(in: gesture.view).y))
renderer?.rotateUsing(translation: translation)
gesture.setTranslation(.zero, in: gesture.view)
}
override func scrollWheel(with event: NSEvent) {
let sensitivity: Float = 0.1
renderer?.zoomUsing(delta: event.deltaY,
sensitivity: sensitivity)
}
@objc public func handleClick(gesture: NSClickGestureRecognizer) {
guard let renderer = renderer else { return }
renderer.wireframe = !renderer.wireframe
}
}