Draw a cross in a position and how node rotation works - ios

Question

I'm playing with spriteKit to create a little game and I'm getting blocked trying to draw a cross (like and X) at a point where i've touched the screen. As i want to draw an X I thought in rotate two rectangles, one Pi/4 and the other one -Pi/4.
I've the following code, i've been playing with node position adding 10 or 20px on both axis. But I cannot understand how the rects intersect on their center for create a cross (like an X).
That's the code I have :
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?)
{
guard let touch = touches.first
else
{
return
}
let location = touch.location(in: self)
let touchedNode = nodes(at: location)
_ = atPoint(location).name
print("Posición touch: \(touchedNode)")
// Draw the cross in the touched point
let redSprite1 = SKShapeNode(rect: CGRect(x: 0, y: 0, width: 10, height: 40))
redSprite1.fillColor = .green
redSprite1.position = CGPoint(x: location.x - 10.0, y: location.y)
redSprite1.zRotation = CGFloat(-Pi/4)
addChild(redSprite1)
// 2
let redSprite2 = SKShapeNode(rect: CGRect(x: 0, y: 0, width: 10, height: 40))
redSprite2.fillColor = .red
redSprite2.position = CGPoint(x: location.x + 10.0, y: location.y)
redSprite2.zRotation = CGFloat(Pi/4)
addChild(redSprite2)
}
I've noted that the rotation is made not from the center of the shape but in their bottom.
Is there any option to rotate a shape or tile from their center ?

Answer 1

Thanks to #bg2b for the solution.
Looking to the apple doc linked on #bg2b answer and applied give the following code.
// 1
let redSprite1 = SKShapeNode(rectOf: CGSize(width: 10.0, height: 40.0))
redSprite1.fillColor = .green
redSprite1.position = CGPoint(x: location.x, y: location.y)
redSprite1.zRotation = CGFloat(-Pi/4)
redSprite1.name = "cruz1"
addChild(redSprite1)
// 2
let redSprite2 = SKShapeNode(rectOf: CGSize(width: 10.0, height: 40.0))
redSprite2.fillColor = .red
redSprite2.position = CGPoint(x: location.x, y: location.y)
redSprite2.zRotation = CGFloat(Pi/4)
redSprite2.name = "cruz2"
addChild(redSprite2)