/Main/src/DynamicDataDisplay/Common/Auxiliary/DataRectExtensions.cs

  1using System;
  2using System.Collections.Generic;
  3using System.Linq;
  4using System.Text;
  5using System.Windows;
  6using System.Windows.Media.TextFormatting;
  7using Microsoft.Research.DynamicDataDisplay.Common;
  8
  9namespace Microsoft.Research.DynamicDataDisplay
 10{
 11    public static class DataRectExtensions
 12    {
 13        internal static bool IsNaN( this DataRect rect )
 14        {
 15            return !rect.IsEmpty &&
 16                (
 17                rect.XMin.IsNaN() ||
 18                rect.YMin.IsNaN() ||
 19                rect.XMax.IsNaN() ||
 20                rect.YMax.IsNaN()
 21                );
 22        }
 23
 24        /// <summary>
 25        /// Gets the center of specified rectangle.
 26        /// </summary>
 27        /// <param name="rect">The rect.</param>
 28        /// <returns></returns>
 29        public static Point GetCenter( this DataRect rect )
 30        {
 31            return new Point( rect.XMin + rect.Width * 0.5, rect.YMin + rect.Height * 0.5 );
 32        }
 33
 34        public static DataRect Zoom( this DataRect rect, Point to, double ratio )
 35        {
 36            return CoordinateUtilities.RectZoom( rect, to, ratio );
 37        }
 38
 39        /// <summary>
 40        /// Zooms out from center.
 41        /// </summary>
 42        /// <param name="rect">The rect.</param>
 43        /// <param name="ratio">The ratio.</param>
 44        /// <returns></returns>
 45        public static DataRect ZoomOutFromCenter( this DataRect rect, double ratio )
 46        {
 47            return CoordinateUtilities.RectZoom( rect, rect.GetCenter(), ratio );
 48        }
 49
 50        /// <summary>
 51        /// Zooms in to center.
 52        /// </summary>
 53        /// <param name="rect">The rect.</param>
 54        /// <param name="ratio">The ratio.</param>
 55        /// <returns></returns>
 56        public static DataRect ZoomInToCenter( this DataRect rect, double ratio )
 57        {
 58            return CoordinateUtilities.RectZoom( rect, rect.GetCenter(), 1 / ratio );
 59        }
 60
 61        public static DataRect ZoomX( this DataRect rect, Point to, double ratio )
 62        {
 63            return CoordinateUtilities.RectZoomX( rect, to, ratio );
 64        }
 65
 66        public static DataRect ZoomY( this DataRect rect, Point to, double ratio )
 67        {
 68            return CoordinateUtilities.RectZoomY( rect, to, ratio );
 69        }
 70
 71        /// <summary>
 72        /// Gets the square of specified DataRect. 
 73        /// </summary>
 74        /// <param name="rect">The rect.</param>
 75        /// <returns></returns>
 76        public static double GetSquare( this DataRect rect )
 77        {
 78            if ( rect.IsEmpty )
 79                return 0;
 80
 81            return rect.Width * rect.Height;
 82        }
 83
 84        /// <summary>
 85        /// Determines whether one DataRect is close to another DataRect.
 86        /// </summary>
 87        /// <param name="rect1">The rect1.</param>
 88        /// <param name="rect2">The rect2.</param>
 89        /// <param name="difference">The difference.</param>
 90        /// <returns>
 91        /// 	<c>true</c> if [is close to] [the specified rect1]; otherwise, <c>false</c>.
 92        /// </returns>
 93        public static bool IsCloseTo( this DataRect rect1, DataRect rect2, double difference )
 94        {
 95            DataRect intersection = DataRect.Intersect( rect1, rect2 );
 96            double square1 = rect1.GetSquare();
 97            double square2 = rect2.GetSquare();
 98            double intersectionSquare = intersection.GetSquare();
 99
100            bool areClose = MathHelper.AreClose( square1, intersectionSquare, difference ) &&
101                MathHelper.AreClose( square2, intersectionSquare, difference );
102            return areClose;
103        }
104
105        public static DataRect WithX( this DataRect rect, double xmin, double xmax )
106        {
107            return DataRect.Create( xmin, rect.YMin, xmax, rect.YMax );
108        }
109
110        public static DataRect WithY( this DataRect rect, double ymin, double ymax )
111        {
112            return DataRect.Create( rect.XMin, ymin, rect.XMax, ymax );
113        }
114    }
115}