AnchroPoint x:0, y:0 not working with equation

I am trying to build a Breakout game where I set the bricks exactly how I want them for each level using 1 SKSpriteNode. It all works, as in they spawn but way off screen to the bottom left. I am using the following line right at the start of didMove(to view: SKView):

scene?.anchorPoint = CGPoint(x: 0.0, y: 0.0)

And the code I use for spawning the bricks is:

//MARK: Brick Layout Config
let widthOfTiles = 7
let heightOfTiles = 3

let widthPoints = 50
let heightPoints = 20

// Different tile arrangements (e.g. 7 tiles wide, 3 high, 7*3 = 21 total tiles)
var brickArray = [false,  true, false,  true, false,  true, false,
                  false,  true,  true,  true, false,  true, false,
                  false,  true, false,  true, false,  true, false] // Says 'HI' using tiles

override func didMove(to view: SKView) {

    //MARK: Brick
    for tile in 0..<brickArray.count {
        if brickArray[tile] == true {

            let brick = SKSpriteNode(imageNamed: "red_brick")

            brick.position = CGPoint(x: (tile % widthOfTiles) * (widthPoints) - (widthOfTiles / 2 * (widthPoints)),
                                     y: ((tile - (tile % widthOfTiles)) / widthOfTiles) * (heightPoints) - (heightOfTiles / 2 * (heightPoints)))
            brick.size = CGSize(width: widthPoints, height: heightPoints)
            brick.physicsBody = SKPhysicsBody(rectangleOf: brick.frame.size)
            brick.physicsBody?.friction = 0
            brick.physicsBody?.allowsRotation = false
            brick.physicsBody?.friction = 0
            brick.physicsBody?.isDynamic = false
            brick.physicsBody?.categoryBitMask = brickCategory
            self.addChild(brick)
        }
    }
}

I cannot for the life of me get this to be in the center of the scene. Maybe someone can help me figure this out. Maths is a bad weak point of mine and while I think I got the equation right for the spawning, the position is way off.

If I am missing something that you need to see please let me know.

Unless you need an animation that depends on the anchor point I would not set it and leave it at its default value or it will change the visual representation of the position of the layer.