source: branches/HeuristicLab.Problems.GrammaticalOptimization/DynamicDataDisplay/Transforms/CoordinateTransformExtensions.cs @ 12503

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Diagnostics.CodeAnalysis;
using Microsoft.Research.DynamicDataDisplay.Common;
using Microsoft.Research.DynamicDataDisplay.Filters;

namespace Microsoft.Research.DynamicDataDisplay
{
  /// <summary>
  /// Contains extension methods that perform coordinate space transformations.
  /// </summary>
  public static class CoordinateTransformExtensions
  {
    #region Points

    /// <summary>
    /// Transforms point in data coordinates to screen coordinates.
    /// </summary>
    /// <param name="dataPoint">Point in data coordinates</param>
    /// <param name="transform">CoordinateTransform used to perform transformation</param>
    /// <returns>Point in screen coordinates</returns>
    public static Point DataToScreen(this Point dataPoint, CoordinateTransform transform)
    {
      return transform.DataToScreen(dataPoint);
    }

    /// <summary>
    /// Transforms point in screen coordinates to data coordinates.
    /// </summary>
    /// <param name="screenPoint">Point in screen coordinates</param>
    /// <param name="transform">CoordinateTransform used to perform transformation</param>
    /// <returns>Point in data coordinates</returns>
    public static Point ScreenToData(this Point screenPoint, CoordinateTransform transform)
    {
      return transform.ScreenToData(screenPoint);
    }

    /// <summary>
    /// Transforms point in screen coordinates to viewport coordinates.
    /// </summary>
    /// <param name="screenPoint">Point in screen coordinates</param>
    /// <param name="transform">CoordinateTransform used to perform transformation</param>
    /// <returns>Point in viewport coordinates</returns>
    public static Point ScreenToViewport(this Point screenPoint, CoordinateTransform transform)
    {
      return transform.ScreenToViewport(screenPoint);
    }

    /// <summary>
    /// Transforms point in viewport coordinates to screen coordinates.
    /// </summary>
    /// <param name="viewportPoint">Point in viewport coordinates</param>
    /// <param name="transform">CoordinateTransform used to perform transformation</param>
    /// <returns>Point in screen coordinates</returns>
    public static Point ViewportToScreen(this Point viewportPoint, CoordinateTransform transform)
    {
      return transform.ViewportToScreen(viewportPoint);
    }

    /// <summary>
    /// Transforms point in viewport coordinates to data coordinates.
    /// </summary>
    /// <param name="viewportPoint">Point in viewport coordinates</param>
    /// <param name="transform">CoordinateTransform used to perform transformation</param>
    /// <returns>Point in data coordinates</returns>
    public static Point ViewportToData(this Point viewportPoint, CoordinateTransform transform)
    {
      return transform.DataTransform.ViewportToData(viewportPoint);
    }

    /// <summary>
    /// Transforms point in data coordinates to viewport coordinates.
    /// </summary>
    /// <param name="dataPoint">Point in data coordinates</param>
    /// <param name="transform">CoordinateTransform used to perform transformation</param>
    /// <returns>Point in viewport coordinates</returns>
    public static Point DataToViewport(this Point dataPoint, CoordinateTransform transform)
    {
      return transform.DataTransform.DataToViewport(dataPoint);
    }

    /// <summary>
    /// Transforms point in data coordinates to viewport coordinates.
    /// </summary>
    /// <param name="dataPoint">Point in data coordinates</param>
    /// <param name="transform">CoordinateTransform used to perform transformation</param>
    /// <returns>Point in viewport coordinates</returns>
    public static Point DataToViewport(this Point dataPoint, DataTransform transform)
    {
      return transform.DataToViewport(dataPoint);
    }

    #endregion

    #region Rects

    /// <summary>
    /// Transforms rectangle from screen coordinates to data coordinates.
    /// </summary>
    /// <param name="screenRect">Rectangle in screen coordinates</param>
    /// <param name="transform">CoordinateTransform used to perform transformation</param>
    /// <returns>Rectangle in data coordinates</returns>
    public static Rect ScreenToData(this Rect screenRect, CoordinateTransform transform)
    {
      Point p1 = screenRect.BottomLeft.ScreenToData(transform);
      Point p2 = screenRect.TopRight.ScreenToData(transform);

      return new Rect(p1, p2);
    }

    /// <summary>
    /// Transforms rectangle from data coordinates to screen coordinates.
    /// </summary>
    /// <param name="dataRect">Rectangle in data coordinates</param>
    /// <param name="transform">CoordinateTransform used to perform transformation</param>
    /// <returns>Rectangle in screen coordinates</returns>
    public static Rect DataToScreen(this DataRect dataRect, CoordinateTransform transform)
    {
      Point p1 = dataRect.XMaxYMax.DataToScreen(transform);
      Point p2 = dataRect.XMinYMin.DataToScreen(transform);

      return new Rect(p1, p2);
    }

    /// <summary>
    /// Transforms rectangle from screen coordinates to viewport coordinates.
    /// </summary>
    /// <param name="screenRect">Rectangle in screen coordinates</param>
    /// <param name="transform">CoordinateTransform used to perform transformation</param>
    /// <returns>Rectangle in viewport coordinates</returns>
    public static DataRect ScreenToViewport(this Rect screenRect, CoordinateTransform transform)
    {
      Point p1 = screenRect.BottomLeft.ScreenToViewport(transform);
      Point p2 = screenRect.TopRight.ScreenToViewport(transform);

      return new DataRect(p1, p2);
    }

    /// <summary>
    /// Transforms rectangle from viewport coordinates to screen coordinates.
    /// </summary>
    /// <param name="viewportRect">Rectangle in viewport coordinates</param>
    /// <param name="transform">CoordinateTransform used to perform transformation</param>
    /// <returns>Rectangle in screen coordinates</returns>
    public static Rect ViewportToScreen(this DataRect viewportRect, CoordinateTransform transform)
    {
      Point p1 = viewportRect.XMaxYMax.ViewportToScreen(transform);
      Point p2 = viewportRect.XMinYMin.ViewportToScreen(transform);

      return new Rect(p1, p2);
    }

    /// <summary>
    /// Transforms rectangle from viewport coordinates to data coordinates.
    /// </summary>
    /// <param name="viewportRect">Rectangle in viewport coordinates</param>
    /// <param name="transform">CoordinateTransform used to perform transformation</param>
    /// <returns>Rectangle in data coordinates</returns>
    public static DataRect ViewportToData(this DataRect viewportRect, CoordinateTransform transform)
    {
      Point p1 = viewportRect.XMaxYMax.ViewportToData(transform);
      Point p2 = viewportRect.XMinYMin.ViewportToData(transform);

      return new DataRect(p1, p2);
    }

    /// <summary>
    /// Transforms rectangle from data coordinates to viewport coordinates.
    /// </summary>
    /// <param name="dataRect">Rectangle in data coordinates</param>
    /// <param name="transform">CoordinateTransform used to perform transformation</param>
    /// <returns>Rectangle in viewport coordinates</returns>
    public static DataRect DataToViewport(this DataRect dataRect, CoordinateTransform transform)
    {
      Point p1 = dataRect.XMaxYMax.DataToViewport(transform);
      Point p2 = dataRect.XMinYMin.DataToViewport(transform);

      return new DataRect(p1, p2);
    }

    /// <summary>
    /// Transforms rectangle from viewport coordinates to data coordinates.
    /// </summary>
    /// <param name="viewportRect">Rectangle in viewport coordinates</param>
    /// <param name="transform">CoordinateTransform used to perform transformation</param>
    /// <returns>Rectangle in data coordinates</returns>
    public static DataRect ViewportToData(this DataRect viewportRect, DataTransform transform)
    {
      Point p1 = transform.ViewportToData(viewportRect.XMaxYMax);
      Point p2 = transform.ViewportToData(viewportRect.XMinYMin);

      return new DataRect(p1, p2);
    }

    /// <summary>
    /// Transforms rectangle from data coordinates to viewport coordinates.
    /// </summary>
    /// <param name="dataRect">Rectangle in data coordinates</param>
    /// <param name="transform">CoordinateTransform used to perform transformation</param>
    /// <returns>Rectangle in viewport coordinates</returns>
    public static DataRect DataToViewport(this DataRect dataRect, DataTransform transform)
    {
      Point p1 = transform.DataToViewport(dataRect.XMinYMin);
      Point p2 = transform.DataToViewport(dataRect.XMaxYMax);

      return new DataRect(p1, p2);
    }

    #endregion

    #region Collections

    /// <summary>
    /// Transforms index-wrapped points from viewport to screen coordinate systems.
    /// </summary>
    /// <param name="viewportPoints">The viewport points.</param>
    /// <param name="transform">The transform.</param>
    /// <returns></returns>
    public static IEnumerable<IndexWrapper<Point>> ViewportToScreen(this IEnumerable<IndexWrapper<Point>> viewportPoints, CoordinateTransform transform)
    {
      foreach (var index in viewportPoints)
      {
        Point pt = index.Data.ViewportToScreen(transform);

        var copy = index;
        copy.Data = pt;

        yield return copy;
      }
    }

    public static IEnumerable<Point> ViewportToScreen(this IEnumerable<Point> viewportPoints, CoordinateTransform transform)
    {
      foreach (var point in viewportPoints)
      {
        yield return point.ViewportToScreen(transform);
      }
    }

    public static IEnumerable<Point> DataToScreen(this IEnumerable<Point> dataPoints, CoordinateTransform transform)
    {
      foreach (var point in dataPoints)
      {
        yield return point.DataToScreen(transform);
      }
    }

    public static IEnumerable<IndexWrapper<Point>> DataToScreen(this IEnumerable<IndexWrapper<Point>> viewportPoints, CoordinateTransform transform)
    {
      foreach (var index in viewportPoints)
      {
        Point pt = index.Data.DataToScreen(transform);

        var copy = index;
        copy.Data = pt;

        yield return copy;
      }
    }

    /// <summary>
    /// Transforms list of points from data coordinates to screen coordinates.
    /// </summary>
    /// <param name="dataPoints">Points in data coordinates</param>
    /// <param name="transform">CoordinateTransform used to perform transformation</param>
    /// <returns>Points in screen coordinates</returns>
    public static List<Point> DataToScreenAsList(this IEnumerable<Point> dataPoints, CoordinateTransform transform)
    {
      ICollection<Point> iCollection = dataPoints as ICollection<Point>;
      List<Point> res;

      if (iCollection != null)
      {
        res = new List<Point>(iCollection.Count);
      }
      else
      {
        res = new List<Point>();
      }

      foreach (var point in dataPoints)
      {
        res.Add(transform.DataToScreen(point));
      }

      return res;
    }

    /// <summary>
    /// Transforms list of points from data coordinates to screen coordinates.
    /// </summary>
    /// <param name="transform">Coordinate transform used to perform transformation</param>
    /// <param name="dataPoints">Points in data coordinates</param>
    /// <returns>List of points in screen coordinates</returns>
    [SuppressMessage("Microsoft.Design", "CA1002:DoNotExposeGenericLists")]
    public static List<Point> DataToScreenAsList(this CoordinateTransform transform, IEnumerable<Point> dataPoints)
    {
      return dataPoints.DataToScreenAsList(transform);
    }

    /// <summary>
    /// Transforms list of points from data coordinates to viewport coordinates.
    /// </summary>
    /// <param name="dataPoints">Points in data coordinates</param>
    /// <param name="transform">Data transform used to perform transformation</param>
    /// <returns>List of points in viewport coordinates</returns>
    public static IEnumerable<Point> DataToViewport(this IEnumerable<Point> dataPoints, DataTransform transform)
    {
      foreach (Point pt in dataPoints)
      {
        yield return pt.DataToViewport(transform);
      }
    }

    public static IEnumerable<IndexWrapper<Point>> DataToViewport(this IEnumerable<IndexWrapper<Point>> viewportPoints, CoordinateTransform transform)
    {
      foreach (var index in viewportPoints)
      {
        Point pt = index.Data.DataToViewport(transform);

        var copy = index;
        copy.Data = pt;

        yield return copy;
      }
    }

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

    public static IEnumerable<Point> ScreenToViewport(this IEnumerable<Point> screenPoints, CoordinateTransform transform)
    {
      foreach (Point pt in screenPoints)
      {
        yield return pt.ScreenToViewport(transform);
      }
    }

    public static IEnumerable<IndexWrapper<Point>> ScreenToViewport(this IEnumerable<IndexWrapper<Point>> viewportPoints, CoordinateTransform transform)
    {
      foreach (var index in viewportPoints)
      {
        Point pt = index.Data.ScreenToViewport(transform);

        var copy = index;
        copy.Data = pt;

        yield return copy;
      }
    }

    public static IEnumerable<Point> ScreenToData(this IEnumerable<Point> screenPoints, CoordinateTransform transform)
    {
      foreach (Point pt in screenPoints)
      {
        yield return pt.ScreenToData(transform);
      }
    }

    public static IEnumerable<IndexWrapper<Point>> ScreenToData(this IEnumerable<IndexWrapper<Point>> viewportPoints, CoordinateTransform transform)
    {
      foreach (var index in viewportPoints)
      {
        Point pt = index.Data.ScreenToData(transform);

        var copy = index;
        copy.Data = pt;

        yield return copy;
      }
    }

    #endregion
  }
}