Fix moon cell layout on the iPad.

1Weather/UI/SharedCells/MoonPhaseCell/MoonPhaseCell.swift

@@ -9,7 +9,8 @@ import UIKit
 
 class MoonPhaseCell: UITableViewCell {
     //Private
-    private let kCircleInset:CGFloat = 55
+    private let kCircleInsetX: CGFloat = 55
+    private let kCircleInsetY: CGFloat = 32
     private let headingLabel = UILabel()
     private let headingButton = ArrowButton()
     private let container = UIView()
@@ -54,14 +55,23 @@ class MoonPhaseCell: UITableViewCell {
         fatalError("init(coder:) has not been implemented")
     }
     
+    var pathCenter: CGPoint {
+        CGPoint(x: baseLine.frame.origin.x + baseLine.bounds.width / 2, y: baseLine.frame.origin.y)
+    }
+    
+    var pathRadius: CGFloat {
+        let center = pathCenter
+        return min(center.x - kCircleInsetX, center.y - kCircleInsetY)
+    }
+    
     override func layoutSubviews() {
         super.layoutSubviews()
         
-        let center = CGPoint(x: baseLine.frame.origin.x + baseLine.bounds.width / 2, y: baseLine.frame.origin.y)
-        let radius = center.x - kCircleInset
+        let center = pathCenter
+        let radius = pathRadius
         
         //Gradient
-        circleGradientLayer.frame = .init(x: kCircleInset - 4,
+        circleGradientLayer.frame = .init(x: center.x - radius - 4,
                                           y: center.y - radius - 4,
                                           width: (radius * 2) + 8,
                                           height: radius + 4)
@@ -99,8 +109,8 @@ class MoonPhaseCell: UITableViewCell {
         let start:CGFloat = -.pi
         let end:CGFloat = 0
         let percent = (start - end) * pathProgress
-        let center = CGPoint(x: baseLine.frame.origin.x + baseLine.bounds.width / 2, y: baseLine.frame.origin.y)
-        let radius = center.x - kCircleInset
+        let center = pathCenter
+        let radius = pathRadius
         
         let path = UIBezierPath(arcCenter: center,
                                 radius: radius,
@@ -163,9 +173,12 @@ class MoonPhaseCell: UITableViewCell {
     public func updateMoonPosition() {
         contentView.layoutIfNeeded()
         
+        let center = pathCenter
+        let radius = pathRadius
+        
         moonImageView.layer.removeAnimation(forKey: "moon.position")
-        moonImageView.frame.origin = .init(x: kCircleInset - moonImageView.frame.width / 2,
-                                           y: baseLine.frame.origin.y - moonImageView.frame.height)
+        moonImageView.frame.origin = .init(x: center.x - radius - moonImageView.frame.width / 2,
+                                           y: center.y - moonImageView.frame.height)
         
         let animation = CAKeyframeAnimation(keyPath: "position")
         animation.path = self.moonPath(progress: moonProgress).cgPath