Initial Commit

PointMarkers/PointMarker.cs

@@ -0,0 +1,26 @@
+using System.Windows;
+using System.Windows.Media;
+
+namespace Microsoft.Research.DynamicDataDisplay.PointMarkers
+{
+	public delegate void MarkerRenderHandler(DrawingContext dc, Point screenPoint);
+
+	/// <summary>Renders markers along graph</summary>
+	public abstract class PointMarker : DependencyObject {
+
+		/// <summary>Renders marker on screen</summary>
+		/// <param name="dc">Drawing context to render marker on</param>
+		/// <param name="dataPoint">Point from data source</param>
+		/// <param name="screenPoint">Marker center coordinates on drawing context</param>
+		public abstract void Render(DrawingContext dc, Point screenPoint);
+
+		public static implicit operator PointMarker(MarkerRenderHandler renderer) {
+            return FromRenderer(renderer);
+		}
+
+        public static PointMarker FromRenderer(MarkerRenderHandler renderer)
+        {
+            return new DelegatePointMarker(renderer);
+        }
+	}
+}