using System;
using System.Windows;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Tobii.Research;

namespace TrackerBridge
{
    public class GazeDataProcessor
    {
        readonly float screenHeight;
        readonly float screenWidth;

        public GazeDataProcessor()
        {
            screenHeight = Convert.ToSingle(SystemParameters.PrimaryScreenHeight);
            screenWidth = Convert.ToSingle(SystemParameters.PrimaryScreenWidth);
        }

        public GazeData Extract(GazeDataEventArgs e)
        {
            GazeData data = new GazeData(e.LeftEye.GazePoint.PositionOnDisplayArea.X * screenWidth,
                                         e.LeftEye.GazePoint.PositionOnDisplayArea.Y * screenHeight,
                                         e.RightEye.GazePoint.PositionOnDisplayArea.X * screenWidth,
                                         e.RightEye.GazePoint.PositionOnDisplayArea.Y * screenHeight,
                                         e.DeviceTimeStamp,
                                         e.SystemTimeStamp);
            return data;
        }
    }
}