Added PointExtensions class

Author: Sergio0694

Microsoft.Toolkit.Uwp/Extensions/PointExtensions.cs

@@ -0,0 +1,45 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Diagnostics.Contracts;
+using System.Runtime.CompilerServices;
+using Point = Windows.Foundation.Point;
+using Rect = Windows.Foundation.Rect;
+using Size = Windows.Foundation.Size;
+
+namespace Microsoft.Toolkit.Uwp.Extensions
+{
+    /// <summary>
+    /// Extensions for the <see cref="Point"/> type.
+    /// </summary>
+    public static class PointExtensions
+    {
+        /// <summary>
+        /// Creates a new <see cref="Rect"/> of the specified size, starting at a given point.
+        /// </summary>
+        /// <param name="point">The input <see cref="Point"/> value to convert.</param>
+        /// <param name="width">The width of the rectangle.</param>
+        /// <param name="height">The height of the rectangle.</param>
+        /// <returns>A <see cref="Rect"/> value of the specified size, starting at the given point.</returns>
+        [Pure]
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static Rect ToRect(this Point point, double width, double height)
+        {
+            return new Rect(point.X, point.Y, width, height);
+        }
+
+        /// <summary>
+        /// Creates a new <see cref="Rect"/> of the specified size, starting at the given coordinates.
+        /// </summary>
+        /// <param name="point">The input <see cref="Point"/> value to convert.</param>
+        /// <param name="size">The size of the rectangle to create.</param>
+        /// <returns>A <see cref="Rect"/> value of the specified size, starting at the given coordinates.</returns>
+        [Pure]
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static Rect ToRect(this Point point, Size size)
+        {
+            return new Rect(point, size);
+        }
+    }
+}