Initial Commit

Common/Auxiliary/RectExtensions.cs

@@ -0,0 +1,67 @@
+using System.Windows;
+using Microsoft.Research.DynamicDataDisplay.Common;
+using System.Diagnostics;
+
+namespace Microsoft.Research.DynamicDataDisplay
+{
+	public static class RectExtensions
+	{
+		public static Point GetCenter(this Rect rect)
+		{
+			return new Point(rect.Left + rect.Width * 0.5, rect.Top + rect.Height * 0.5);
+		}
+
+		public static Rect FromCenterSize(Point center, Size size)
+		{
+			return FromCenterSize(center, size.Width, size.Height);
+		}
+
+		public static Rect FromCenterSize(Point center, double width, double height)
+		{
+			Rect res = new Rect(center.X - width / 2, center.Y - height / 2, width, height);
+			return res;
+		}
+
+		public static Rect Zoom(this Rect rect, Point to, double ratio)
+		{
+			return CoordinateUtilities.RectZoom(rect, to, ratio);
+		}
+
+		public static Rect ZoomOutFromCenter(this Rect rect, double ratio)
+		{
+			return CoordinateUtilities.RectZoom(rect, rect.GetCenter(), ratio);
+		}
+
+		public static Rect ZoomInToCenter(this Rect rect, double ratio)
+		{
+			return CoordinateUtilities.RectZoom(rect, rect.GetCenter(), 1 / ratio);
+		}
+
+		public static Int32Rect ToInt32Rect(this Rect rect)
+		{
+			Int32Rect intRect = new Int32Rect(
+				(int)rect.X,
+				(int)rect.Y,
+				(int)rect.Width,
+				(int)rect.Height);
+
+			return intRect;
+		}
+
+		[DebuggerStepThrough]
+		public static DataRect ToDataRect(this Rect rect)
+		{
+			return new DataRect(rect);
+		}
+
+		internal static bool IsNaN(this Rect rect)
+		{
+			return !rect.IsEmpty && (
+				rect.X.IsNaN() ||
+				rect.Y.IsNaN() ||
+				rect.Width.IsNaN() ||
+				rect.Height.IsNaN()
+				);
+		}
+	}
+}