source: branches/HeuristicLab.Problems.GrammaticalOptimization/DynamicDataDisplay/Charts/Shapes/ViewportPolyline.cs @ 12503

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Media;
using System.Windows;

namespace Microsoft.Research.DynamicDataDisplay.Charts.Shapes
{
  /// <summary>
  /// Represents a polyline with points in Viewport coordinates.
  /// </summary>
  public sealed class ViewportPolyline : ViewportPolylineBase
  {
    /// <summary>
    /// Initializes a new instance of the <see cref="ViewportPolyline"/> class.
    /// </summary>
    public ViewportPolyline() { }

    protected override void UpdateUIRepresentationCore()
    {
      var transform = Plotter.Viewport.Transform;

      PathGeometry geometry = PathGeometry;

      PointCollection points = Points;
      geometry.Clear();

      if (points == null) { }
      else
      {
        PathFigure figure = new PathFigure();
        if (points.Count > 0)
        {
          figure.StartPoint = points[0].DataToScreen(transform);
          if (points.Count > 1)
          {
            Point[] pointArray = new Point[points.Count - 1];
            for (int i = 1; i < points.Count; i++)
            {
              pointArray[i - 1] = points[i].DataToScreen(transform);
            }
            figure.Segments.Add(new PolyLineSegment(pointArray, true));
          }
        }
        geometry.Figures.Add(figure);
        geometry.FillRule = this.FillRule;
      }
    }
  }
}