passing variables to NSView - macos

Question

I'm trying to pass the contents of an array to an NSView to display rectangles x positions.
I have set up a version using random numbers and a button and reduced the code to a minimum so hopefully it's more readable . I have tried creating the array as a Global Variable. I have also tried reversing the code from this answer.Pass data between view controllers.I have inserted a comment: "This is what I would like to achieve" which explain what i'm trying to achieve.
I'm hoping someone might help ? thanks
Swift 3 Xcode 8.1 OSX Mac OS not iOS
//
// MainWindowController.swift
import Cocoa
class MainWindowController: NSWindowController {
#IBOutlet weak var myView: NSView!
var myArray = [Int]()
override func windowDidLoad() {
super.windowDidLoad()
//just for testing
for i in 0..<6{
myArray.append(i*10)
}
}//EO Overide
//just for testing
#IBAction func myButton(_ sender: AnyObject) {
myFunc()
}
func myFunc(){
for i in 0..<6{
let diceRoll = Int(arc4random_uniform(6) + 1)
myArray[i]=diceRoll * 10
}
myView.needsDisplay = true
}//EO myFunc
}//EnD oF thE wORld
class myGUI: NSView {
override func draw(_ dirtyRect: NSRect) {
for i in..<6{
let fromArray = myArray[i]
let box1 = NSMakeRect(CGFloat(fromArray),0,4,60)//This is what i want to do
let box1Color = NSColor(red: 0.4, green: 0.4, blue: 0.4, alpha: 1.0)
let box1Path: NSBezierPath = NSBezierPath(rect: box1)
box1Color.set()
box1Path.fill()
}//EO For
}}

Answer 1

Since you have a strong reference to the subclass of NSView just add a property:
class myGUI: NSView {
var xPosArray = [Int]()
override func draw(_ dirtyRect: NSRect) {
for xPos in xPosArray { // please avoid ugly C-style index based loops
let box1 = NSMakeRect(CGFloat(xPos), 0, 4, 60)
...
and simply set it in the view controller
func myFunc(){
for i in 0..<6 {
let diceRoll = Int(arc4random_uniform(6) + 1)
myArray[i]=diceRoll * 10
}
myView.xPosArray = myArray
myView.needsDisplay = true
}
Consider that class names are supposed to start with an uppercase letter.