using System.Collections.Generic;

using System.Windows;

using System;



namespace Microsoft.Research.DynamicDataDisplay.Filters

{

    /// <summary>Provides algorithm for filtering point lists in screen coordinates</summary>

    public interface IPointsFilter

    {



        /// <summary>Performs filtering</summary>

        /// <param name="points">List of source points</param>

        /// <returns>List of filtered points</returns>

        List<Point> Filter(List<Point> points);



        /// <summary>Sets visible rectangle in screen coordinates</summary>

        /// <param name="rect">Screen rectangle</param>

        /// <remarks>Should be invoked before first call to <see cref="Filter"/></remarks>

        void SetScreenRect(Rect screenRect);



		event EventHandler Changed;

    }

}