Comments

src/PolyZone/Shapes/Circle.cs

@@ -3,24 +3,33 @@
 
 namespace PolyZone.Shapes;
 
-public class Circle(float x, float y, float radius) : ICircle
+/// <summary>
+/// A 2d circle, constructed from a center point and radius
+/// </summary>
+/// <param name="center">Center of the circle</param>
+/// <param name="radius">Radius of the circle</param>
+public class Circle(in Vector2 center, float radius) : ICircle
 {
-    public Circle(in Vector2 center, float radius) : this(center.X, center.Y, radius)
-    {
-
-    }
-
+    public Vector2 Center { get; } = center;
+    public float Radius { get; } = radius;
+
+    /// <inheritdoc cref="ISpatial2dShape.Contains"/>
     public bool Contains(in Vector2 point)
     {
         // Calculate the distance from the center of the circle to the given point
-        var distance = (float) Math.Sqrt(Math.Pow(point.X - x, 2) + Math.Pow(point.Y - y, 2));
+        var distance = (float) Math.Sqrt(Math.Pow(point.X - Center.X, 2) + Math.Pow(point.Y - Center.Y, 2));
 
         // Check if the distance is less than or equal to the radius
-        return distance <= radius;
+        return distance <= Radius;
     }
 
+    /// <inheritdoc cref="ISpatial2dShape.DistanceFrom"/>
     public float DistanceFrom(in Vector2 point)
     {
-        throw new NotImplementedException();
+        // Calculate the distance from the center of the circle to the given point
+        var distance = (float)Math.Sqrt(Math.Pow(point.X - Center.X, 2) + Math.Pow(point.Y - Center.Y, 2));
+
+        // Subtract the radius to get the distance from the circumference
+        return Math.Max(distance - Radius, 0);
     }
 }

src/PolyZone/Shapes/Rectangle.cs

@@ -3,6 +3,11 @@
 
 namespace PolyZone.Shapes;
 
+/// <summary>
+/// A 2d rectangular shape, constructed from an upperLeft and bottomRight point
+/// </summary>
+/// <param name="upperLeft">Upper left point of the rectangle</param>
+/// <param name="bottomRight">Bottom right point of the rectangle</param>
 public class Rectangle(in Vector2 upperLeft, in Vector2 bottomRight) : IRectangle
 {
     public Vector2 UpperLeft { get; } = upperLeft;