source: branches/HeuristicLab.Problems.GrammaticalOptimization/DynamicDataDisplay/Common/Auxiliary/RectExtensions.cs @ 12503

using System.Windows;
using Microsoft.Research.DynamicDataDisplay.Common;
using System.Diagnostics;

namespace Microsoft.Research.DynamicDataDisplay
{
  public static class RectExtensions
  {
    public static Point GetCenter(this Rect rect)
    {
      return new Point(rect.Left + rect.Width * 0.5, rect.Top + rect.Height * 0.5);
    }

    public static Rect FromCenterSize(Point center, Size size)
    {
      return FromCenterSize(center, size.Width, size.Height);
    }

    public static Rect FromCenterSize(Point center, double width, double height)
    {
      Rect res = new Rect(center.X - width / 2, center.Y - height / 2, width, height);
      return res;
    }

    public static Rect Zoom(this Rect rect, Point to, double ratio)
    {
      return CoordinateUtilities.RectZoom(rect, to, ratio);
    }

    public static Rect ZoomOutFromCenter(this Rect rect, double ratio)
    {
      return CoordinateUtilities.RectZoom(rect, rect.GetCenter(), ratio);
    }

    public static Rect ZoomInToCenter(this Rect rect, double ratio)
    {
      return CoordinateUtilities.RectZoom(rect, rect.GetCenter(), 1 / ratio);
    }

    public static Int32Rect ToInt32Rect(this Rect rect)
    {
      Int32Rect intRect = new Int32Rect(
        (int)rect.X,
        (int)rect.Y,
        (int)rect.Width,
        (int)rect.Height);

      return intRect;
    }

    [DebuggerStepThrough]
    public static DataRect ToDataRect(this Rect rect)
    {
      return new DataRect(rect);
    }

    internal static bool IsNaN(this Rect rect)
    {
      return !rect.IsEmpty && (
        rect.X.IsNaN() ||
        rect.Y.IsNaN() ||
        rect.Width.IsNaN() ||
        rect.Height.IsNaN()
        );
    }
  }
}