60 lines
1.5 KiB
C#
60 lines
1.5 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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namespace Microsoft.Research.DynamicDataDisplay.Charts.Shapes
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{
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/// <summary>
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/// Represents a closed filled figure with points in Viewport coordinates.
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/// </summary>
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public sealed class ViewportPolygon : ViewportPolylineBase
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{
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static ViewportPolygon()
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{
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Type type = typeof(ViewportPolygon);
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Shape.FillProperty.AddOwner(type, new FrameworkPropertyMetadata(Brushes.Coral));
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="ViewportPolygon"/> class.
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/// </summary>
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public ViewportPolygon() { }
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protected override void UpdateUIRepresentationCore()
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{
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var transform = Plotter.Viewport.Transform;
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PathGeometry geometry = PathGeometry;
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PointCollection points = Points;
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geometry.Clear();
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if (points == null) { }
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else
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{
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PathFigure figure = new PathFigure();
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if (points.Count > 0)
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{
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figure.StartPoint = points[0].DataToScreen(transform);
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if (points.Count > 1)
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{
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Point[] pointArray = new Point[points.Count - 1];
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for (int i = 1; i < points.Count; i++)
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{
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pointArray[i - 1] = points[i].DataToScreen(transform);
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}
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figure.Segments.Add(new PolyLineSegment(pointArray, true));
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figure.IsClosed = true;
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}
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}
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geometry.Figures.Add(figure);
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geometry.FillRule = this.FillRule;
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}
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}
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}
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}
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