96 lines
2.4 KiB
Swift
96 lines
2.4 KiB
Swift
//
|
|
// ViewController.swift
|
|
// Metaballs-iOS
|
|
//
|
|
// Created by Eryn Wells on 10/7/18.
|
|
// Copyright © 2018 Eryn Wells. All rights reserved.
|
|
//
|
|
|
|
import UIKit
|
|
|
|
class ViewController: UIViewController {
|
|
private static func defaultParameters() -> Parameters {
|
|
var p = Parameters()
|
|
let defaults = UserDefaults.standard
|
|
let style = defaults.colorStyle ?? .gradient2Horizontal
|
|
p.colorStyle = style
|
|
let color0 = defaults.color0 ?? Float4(0.50, 0.79, 1, 1)
|
|
p.color0 = color0
|
|
let color1 = defaults.color1 ?? Float4(0.88, 0.50, 1, 1)
|
|
p.color1 = color1
|
|
return p
|
|
}
|
|
|
|
internal var field: Field {
|
|
didSet {
|
|
field.size = Size(size: metalView.drawableSize)
|
|
}
|
|
}
|
|
|
|
private var renderer: Renderer!
|
|
|
|
internal var metalView: MTKView {
|
|
return self.view as! MTKView
|
|
}
|
|
|
|
override init(nibName nibNameOrNil: String?, bundle nibBundleOrNil: Bundle?) {
|
|
let params = ViewController.defaultParameters()
|
|
field = Field(parameters: params)
|
|
super.init(nibName: nibNameOrNil, bundle: nibBundleOrNil)
|
|
}
|
|
|
|
required init?(coder: NSCoder) {
|
|
let params = ViewController.defaultParameters()
|
|
field = Field(parameters: params)
|
|
super.init(coder: coder)
|
|
}
|
|
|
|
override func viewDidLoad() {
|
|
super.viewDidLoad()
|
|
|
|
do {
|
|
renderer = try Renderer(delegate: self)
|
|
} catch let e {
|
|
print("\(e)")
|
|
view = newErrorView()
|
|
return
|
|
}
|
|
|
|
metalView.delegate = renderer
|
|
}
|
|
|
|
override func viewWillAppear() {
|
|
super.viewWillAppear()
|
|
renderer.mtkView(metalView, drawableSizeWillChange: metalView.drawableSize)
|
|
for _ in 1...10 {
|
|
addBallWithRandomRadius()
|
|
}
|
|
}
|
|
|
|
// MARK: - Private
|
|
|
|
private func newErrorView() -> NSView {
|
|
let view = NSView()
|
|
view.layer?.backgroundColor = NSColor.red.cgColor
|
|
return view
|
|
}
|
|
|
|
private func addBallWithRandomRadius() {
|
|
let base = UInt32(view.bounds.width * 0.05)
|
|
let variance = UInt32(base * 2)
|
|
let r = Float(base + arc4random_uniform(variance))
|
|
field.add(ballWithRadius: r)
|
|
}
|
|
|
|
// MARK: - RendererDelegate
|
|
|
|
var renderSize: Size {
|
|
get {
|
|
return field.size
|
|
}
|
|
set {
|
|
field.size = newValue
|
|
}
|
|
}
|
|
}
|
|
|