105 lines
2.7 KiB
C#
105 lines
2.7 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Windows.Media;
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using System.Windows;
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using System.Windows.Shapes;
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using Microsoft.Research.DynamicDataDisplay;
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namespace Microsoft.Research.DynamicDataDisplay.Charts
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{
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/// <summary>
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/// Represents a segment with start and end points bound to viewport coordinates.
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/// </summary>
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public class Segment : ViewportShape
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{
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/// <summary>
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/// Initializes a new instance of the <see cref="Segment"/> class.
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/// </summary>
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public Segment() { }
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/// <summary>
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/// Initializes a new instance of the <see cref="Segment"/> class.
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/// </summary>
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/// <param name="startPoint">The start point of segment.</param>
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/// <param name="endPoint">The end point of segment.</param>
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public Segment(Point startPoint, Point endPoint)
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{
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StartPoint = startPoint;
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EndPoint = endPoint;
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}
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/// <summary>
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/// Gets or sets the start point of segment.
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/// </summary>
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/// <value>The start point.</value>
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public Point StartPoint
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{
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get { return (Point)GetValue(StartPointProperty); }
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set { SetValue(StartPointProperty, value); }
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}
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/// <summary>
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/// Identifies the StartPoint dependency property.
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/// </summary>
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public static readonly DependencyProperty StartPointProperty = DependencyProperty.Register(
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"StartPoint",
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typeof(Point),
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typeof(Segment),
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new FrameworkPropertyMetadata(new Point(), OnPointChanged));
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protected static void OnPointChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
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{
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Segment segment = (Segment)d;
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segment.UpdateUIRepresentation();
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}
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protected virtual void OnPointChanged() { }
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/// <summary>
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/// Gets or sets the end point of segment.
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/// </summary>
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/// <value>The end point.</value>
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public Point EndPoint
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{
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get { return (Point)GetValue(EndPointProperty); }
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set { SetValue(EndPointProperty, value); }
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}
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/// <summary>
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/// Identifies the EndPoint dependency property.
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/// </summary>
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public static readonly DependencyProperty EndPointProperty = DependencyProperty.Register(
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"EndPoint",
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typeof(Point),
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typeof(Segment),
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new FrameworkPropertyMetadata(new Point(), OnPointChanged));
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protected override void UpdateUIRepresentationCore()
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{
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if (Plotter == null)
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return;
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var transform = Plotter.Viewport.Transform;
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Point p1 = StartPoint.DataToScreen(transform);
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Point p2 = EndPoint.DataToScreen(transform);
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lineGeometry.StartPoint = p1;
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lineGeometry.EndPoint = p2;
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}
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LineGeometry lineGeometry = new LineGeometry();
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protected LineGeometry LineGeometry
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{
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get { return lineGeometry; }
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}
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protected override Geometry DefiningGeometry
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{
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get { return lineGeometry; }
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}
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}
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}
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