/Main/src/Samples/Simple/DynamicPointAddSample/Window1.xaml.cs

 1using System;
 2using System.Collections.Generic;
 3using System.Linq;
 4using System.Text;
 5using System.Windows;
 6using System.Windows.Controls;
 7using System.Windows.Data;
 8using System.Windows.Documents;
 9using System.Windows.Input;
10using System.Windows.Media;
11using System.Windows.Media.Imaging;
12using System.Windows.Navigation;
13using System.Windows.Shapes;
14using System.Windows.Threading;
15using System.Collections.ObjectModel;
16
17using Microsoft.Research.DynamicDataDisplay;
18using Microsoft.Research.DynamicDataDisplay.DataSources;
19
20namespace DynamicPointAddSample
21{
22	/// <summary>
23	/// Interaction logic for Window1.xaml
24	/// </summary>
25	public partial class Window1 : Window
26	{
27		public Window1()
28		{
29			InitializeComponent();
30
31			Loaded += new RoutedEventHandler(Window1_Loaded);
32		}
33
34		private DispatcherTimer timer = new DispatcherTimer { Interval = TimeSpan.FromSeconds(4) };
35		private ObservableCollection<Point> data = new ObservableCollection<Point>();
36		private int x = 0;
37		private Random rnd = new Random();
38
39		private void Window1_Loaded(object sender, RoutedEventArgs e)
40		{
41			// initial collection content
42			for (int i = 0; i < 10000; i++)
43			{
44				AddNextPoint();
45			}
46
47			// switching off approximate content bounds' comparison, as this can cause improper behavior.
48			plotter.Viewport.UseApproximateContentBoundsComparison = false;
49			// adding line chart to plotter
50			var line = plotter.AddLineGraph(data.AsDataSource());
51			// again switching off approximate content bounds' comparison - now in coercion method of Viewport2D.ContentBounds attached dependency property.
52			Viewport2D.SetUsesApproximateContentBoundsComparison(line, false);
53
54			// simulating data being received from external source on each timer tick
55			timer.Tick += new EventHandler(timer_Tick);
56			timer.Start();
57		}
58
59		void timer_Tick(object sender, EventArgs e)
60		{
61			AddNextPoint();
62			plotter.FitToView();
63		}
64
65		private void AddNextPoint()
66		{
67			Point p = new Point { X = x++, Y = rnd.NextDouble() };
68			data.Add(p);
69		}
70	}
71}