2d visualization笔记(x3) dynamicdatadisplay(sl)(一)

<!-- Copyright © 2010-2011 Microsoft Corporation, All Rights Reserved.
 -->
<UserControl x:Class="Tutorial1.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:d3="clr-namespace:Microsoft.Research.DynamicDataDisplay;assembly=DynamicDataDisplay.Silverlight"
    mc:Ignorable="d"
    d:DesignHeight="300" d:DesignWidth="400">

    <Grid x:Name="LayoutRoot" Background="White">        
        <!-- D3 markup starts here-->
        <d3:Chart BottomTitle="Sinc argument" LeftTitle="Sinc value">
            <d3:Chart.Title>
                <TextBlock HorizontalAlignment="Center" FontSize="14" Margin="0,5,0,5">Tutorial 1: Line graph</TextBlock>
            </d3:Chart.Title>
            <d3:LineGraph x:Name="linegraph" Description="Sinc graph" Stroke="Blue" StrokeThickness="3"/>
        </d3:Chart>        
    </Grid>
</UserControl>

using System;
using System.Linq;
using System.Windows.Controls;

namespace 
{
    public partial class MainPage : UserControl
    {
        public MainPage()
        {
            InitializeComponent();

            // Compute x array of 1001 points from 0 to 100 with 0.1 step
            var x = Enumerable.Range(0, 1001).Select(i => i / 10.0).ToArray();

            // Compute y array as sin(x)/x function defined on x grid
            var y = x.Select(v => Math.Abs(v) < 1e-10 ? 1 : Math.Sin(v) / v).ToArray();

            // Plot data 
            linegraph.Plot(x, y);
        }
    }
}

public class LineGraph : Plot 
{
    ...
    private Polyline polyline;

    /// <summary>
    /// Identifies <see cref="P:Microsoft.Research.DynamicDataDisplay.LineGraph.Points" /> dependecy property
    /// </summary>
    public new static readonly DependencyProperty PointsProperty = DependencyProperty.Register("Points", typeof(PointCollection), typeof(LineGraph), new PropertyMetadata(new PointCollection(), delegate(DependencyObject o, DependencyPropertyChangedEventArgs e)
    {
        LineGraph lineGraph = (LineGraph)o;
        if (lineGraph != null)
        {
            Microsoft.Research.DynamicDataDisplay.Plot.SetPoints(lineGraph.polyline, (PointCollection)e.get_NewValue());
        }
    }));

    public void Plot(IEnumerable x, IEnumerable y)
    {
        ...
        PointCollection pointCollection = new PointCollection();
        IEnumerator enumerator = x.GetEnumerator();
        IEnumerator enumerator2 = y.GetEnumerator();
        ...
        this.Points = pointCollection;
    }

    /// <summary>
    /// Gets or sets line graph points.
    /// </summary>
    public PointCollection Points
    {
        get
        {
            return (PointCollection)base.GetValue(LineGraph.PointsProperty);
        }
        set
        {
            base.SetValue(LineGraph.PointsProperty, value);
        }
    }


}