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

namespace Microsoft.Research.DynamicDataDisplay
{
	public static class CoordinateUtilities
	{
		public static Rect RectZoom(Rect rect, double ratio)
		{
			return RectZoom(rect, rect.GetCenter(), ratio);
		}

		public static Rect RectZoom(Rect rect, double horizontalRatio, double verticalRatio)
		{
			return RectZoom(rect, rect.GetCenter(), horizontalRatio, verticalRatio);
		}

		public static Rect RectZoom(Rect rect, Point zoomCenter, double ratio)
		{
			return RectZoom(rect, zoomCenter, ratio, ratio);
		}

		public static Rect RectZoom(Rect rect, Point zoomCenter, double horizontalRatio, double verticalRatio)
		{
			Rect res = new Rect();
			res.X = zoomCenter.X - (zoomCenter.X - rect.X) * horizontalRatio;
			res.Y = zoomCenter.Y - (zoomCenter.Y - rect.Y) * verticalRatio;
			res.Width = rect.Width * horizontalRatio;
			res.Height = rect.Height * verticalRatio;
			return res;
		}

		public static DataRect RectZoom(DataRect rect, double ratio)
		{
			return RectZoom(rect, rect.GetCenter(), ratio);
		}

		public static DataRect RectZoom(DataRect rect, double horizontalRatio, double verticalRatio)
		{
			return RectZoom(rect, rect.GetCenter(), horizontalRatio, verticalRatio);
		}

		public static DataRect RectZoom(DataRect rect, Point zoomCenter, double ratio)
		{
			return RectZoom(rect, zoomCenter, ratio, ratio);
		}

		public static DataRect RectZoom(DataRect rect, Point zoomCenter, double horizontalRatio, double verticalRatio)
		{
			DataRect res = new DataRect();
			res.XMin = zoomCenter.X - (zoomCenter.X - rect.XMin) * horizontalRatio;
			res.YMin = zoomCenter.Y - (zoomCenter.Y - rect.YMin) * verticalRatio;
			res.Width = rect.Width * horizontalRatio;
			res.Height = rect.Height * verticalRatio;
			return res;
		}

		public static DataRect RectZoomX(DataRect rect, Point zoomCenter, double ratio)
		{
			DataRect res = rect;
			res.XMin = zoomCenter.X - (zoomCenter.X - rect.XMin) * ratio;
			res.Width = rect.Width * ratio;
			return res;
		}

		public static DataRect RectZoomY(DataRect rect, Point zoomCenter, double ratio)
		{
			DataRect res = rect;
			res.YMin = zoomCenter.Y - (zoomCenter.Y - rect.YMin) * ratio;
			res.Height = rect.Height * ratio;
			return res;
		}
	}
}