using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Data;

using System.Windows.Documents;

using System.Windows.Input;

using System.Windows.Media;

using System.Windows.Media.Imaging;

using System.Windows.Navigation;

using System.Windows.Shapes;

using Microsoft.Research.DynamicDataDisplay.DataSources;

using System.Windows.Threading;

using System.Globalization;



namespace Microsoft.Research.DynamicDataDisplay.Xbap.Samples.Demos.v02

{

	/// <summary>

	/// Interaction logic for AnimationSample.xaml

	/// </summary>

	public partial class AnimationSample : Page

	{

		double phase = 0;

		readonly double[] animatedX = new double[1000];

		readonly double[] animatedY = new double[1000];

		EnumerableDataSource<double> animatedDataSource = null;



		/// <summary>Programmatically created header</summary>

		Header chartHeader = new Header();



		/// <summary>Text contents of header</summary>

		TextBlock headerContents = new TextBlock();



		/// <summary>Timer to animate data</summary>

		readonly DispatcherTimer timer = new DispatcherTimer();  



		public AnimationSample()

		{

			InitializeComponent();

			headerContents.FontSize = 24;

			headerContents.Text = "Phase = 0.00";

			headerContents.HorizontalAlignment = HorizontalAlignment.Center;

			chartHeader.Content = headerContents;

			plotter.Children.Add(chartHeader);

		}



		private void AnimatedPlot_Timer(object sender, EventArgs e)

		{

			phase += 0.01;

			if (phase > 2 * Math.PI)

				phase -= 2 * Math.PI;

			for (int i = 0; i < animatedX.Length; i++)

				animatedY[i] = Math.Sin(animatedX[i] + phase);



			// Here it is - signal that data is updated

			animatedDataSource.RaiseDataChanged();

			headerContents.Text = String.Format(CultureInfo.InvariantCulture, "Phase = {0:N2}", phase);

		}



		private void Window_Loaded(object sender, RoutedEventArgs e)

		{

			for (int i = 0; i < animatedX.Length; i++)

			{

				animatedX[i] = 2 * Math.PI * i / animatedX.Length;

				animatedY[i] = Math.Sin(animatedX[i]);

			}

			EnumerableDataSource<double> xSrc = new EnumerableDataSource<double>(animatedX);

			xSrc.SetXMapping(x => x);

			animatedDataSource = new EnumerableDataSource<double>(animatedY);

			animatedDataSource.SetYMapping(y => y);



			// Adding graph to plotter

			// todo

			//plotter.AddLineGraph(new CompositeDataSource(xSrc, animatedDataSource),

			//    new Pen(Brushes.Magenta, 3),

			//    new PenDescription("Sin(x + phase)"));



			timer.Interval = TimeSpan.FromMilliseconds(10);

			timer.Tick += AnimatedPlot_Timer;

			timer.IsEnabled = true;



			// Force evertyhing plotted to be visible

			plotter.FitToView();

		}



		private void Page_Unloaded(object sender, RoutedEventArgs e)

		{

			timer.Stop();

		}

	}

}