/// <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 Rect DataToViewport(this Rect dataRect, DataTransform transform)
{
Point p1 = transform.DataToViewport(dataRect.BottomLeft);
Point p2 = transform.DataToViewport(dataRect.TopRight);
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 Rect ViewportToData(this Rect viewportRect, DataTransform transform)
{
Point p1 = transform.ViewportToData(viewportRect.BottomLeft);
Point p2 = transform.ViewportToData(viewportRect.TopRight);
return(new Rect(p1, p2));
}
/// <summary>
/// Creates a new instance of CoordinateTransform with the given data transform.
/// </summary>
/// <param name="dataTransform">The data transform.</param>
/// <returns></returns>
public CoordinateTransform WithDataTransform(DataTransform dataTransform)
{
if (dataTransform == null)
{
throw new ArgumentNullException("dataTransform");
}
CoordinateTransform copy = new CoordinateTransform(visibleRect, screenRect);
copy.dataTransform = dataTransform;
return(copy);
}
public static Rect GetViewportBounds(IEnumerable <Point> dataPoints, DataTransform transform)
{
return(GetDataBounds(dataPoints.DataToViewport(transform)));
}
/// <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));
}
/// <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));
}
}
