source: branches/HeuristicLab.Problems.GrammaticalOptimization/DynamicDataDisplay/Charts/Shapes/HorizontalLine.cs @ 12747

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Shapes;
using System.Windows;
using System.Windows.Media;
using Microsoft.Research.DynamicDataDisplay;

namespace Microsoft.Research.DynamicDataDisplay.Charts
{
  /// <summary>
  /// Represents an infinite horizontal line with y-coordinate.
  /// </summary>
  public sealed class HorizontalLine : SimpleLine
  {
    /// <summary>
    /// Initializes a new instance of the <see cref="HorizontalLine"/> class.
    /// </summary>
    public HorizontalLine() { }

    /// <summary>
    /// Initializes a new instance of the <see cref="HorizontalLine"/> class with specified y coordinate.
    /// </summary>
    /// <param name="yCoordinate">The y coordinate of line.</param>
    public HorizontalLine(double yCoordinate)
    {
      Value = yCoordinate;
    }

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

      Point p1 = new Point(Plotter.Viewport.Visible.XMin, Value).DataToScreen(transform);
      Point p2 = new Point(Plotter.Viewport.Visible.XMax, Value).DataToScreen(transform);

      LineGeometry.StartPoint = p1;
      LineGeometry.EndPoint = p2;
    }
  }
}