Update Radius

Author: swhitty

SwiftDraw/LayerTree.Builder.swift

@@ -260,11 +260,14 @@ extension LayerTree.Builder {
             return nil
         }
 
+        let cx = element.cx ?? 0.5
+        let cy = element.cy ?? 0.5
+
         return LayerTree.RadialGradient(
             gradient: gradient,
-            center: LayerTree.Point(element.fx ?? element.cx ?? 0.5, element.fy ?? element.cy ?? 0.5),
+            center: LayerTree.Point(element.fx ?? cx, element.fy ?? cy),
             radius: LayerTree.Float(element.fr ?? 0),
-            endCenter: LayerTree.Point(element.cx ?? 0.5, element.cy ?? 0.5),
+            endCenter: LayerTree.Point(cx, cy),
             endRadius: LayerTree.Float(element.r ?? 0.5)
         )
     }

SwiftDraw/LayerTree.CommandGenerator.swift

@@ -235,7 +235,7 @@ extension LayerTree {
                 switch fillGradient.gradient.units  {
                 case .objectBoundingBox:
                     let pathBounds = provider.getBounds(from: shape)
-                    let h = sqrt((pathBounds.width*pathBounds.width) + (pathBounds.height*pathBounds.height))
+                    let h = sqrt((pathBounds.width*pathBounds.width) + (pathBounds.height*pathBounds.height)) / 2
                     startCenter = LayerTree.Point(
                         pathBounds.x + (fillGradient.center.x * pathBounds.width),
                         pathBounds.y + (fillGradient.center.y * pathBounds.height)