source: branches/HeuristicLab.Problems.GrammaticalOptimization/DynamicDataDisplay/Common/Auxiliary/BoundsHelper.cs @ 13862

using System;
using System.Collections.Generic;
using System.Windows;
using Microsoft.Research.DynamicDataDisplay.Common;

namespace Microsoft.Research.DynamicDataDisplay
{
  public static class BoundsHelper
  {
    /// <summary>Computes bounding rectangle for sequence of points</summary>
    /// <param name="points">Points sequence</param>
    /// <returns>Minimal axis-aligned bounding rectangle</returns>
    public static DataRect GetViewportBounds(IEnumerable<Point> viewportPoints)
    {
      DataRect bounds = DataRect.Empty;

      double xMin = Double.PositiveInfinity;
      double xMax = Double.NegativeInfinity;

      double yMin = Double.PositiveInfinity;
      double yMax = Double.NegativeInfinity;

      foreach (Point p in viewportPoints)
      {
        xMin = Math.Min(xMin, p.X);
        xMax = Math.Max(xMax, p.X);

        yMin = Math.Min(yMin, p.Y);
        yMax = Math.Max(yMax, p.Y);
      }

      // were some points in collection
      if (!Double.IsInfinity(xMin))
      {
        bounds = DataRect.Create(xMin, yMin, xMax, yMax);
      }

      return bounds;
    }

    public static DataRect GetViewportBounds(IEnumerable<Point> dataPoints, DataTransform transform)
    {
      return GetViewportBounds(dataPoints.DataToViewport(transform));
    }
  }
}