using System;

namespace Assistance {

	public struct TrackPoint {

		public Point point;

		public double time;

		public double pressure;

		public Point tilt;

		public KeyState<gdk.key>.Holder keyState;</gdk.key>

		public KeyState<uint>.Holder buttonState;</uint>

		public TrackPoint spawn(Point point, double time, double pressure, Point tilt) {

			TrackPoint p = this;

			p.point = point;

			p.time = time;

			p.pressure = pressure;

			p.tilt = tilt;

			p.keyState.timeOffset += time - this.time;

			p.buttonState.timeOffset += time - this.time;

			return p;

		}

		public static TrackPoint operator+ (TrackPoint a, TrackPoint b)

			{ return a.spawn(a.point + b.point, a.time + b.time, a.pressure + b.pressure, a.tilt + b.tilt); }

		public static TrackPoint operator- (TrackPoint a, TrackPoint b)

			{ return a.spawn(a.point - b.point, a.time - b.time, a.pressure - b.pressure, a.tilt - b.tilt); }

		public static TrackPoint operator* (TrackPoint a, double b)

			{ return a.spawn(a.point*b, a.time*b, a.pressure*b, a.tilt*b); }

		public static TrackPoint operator* (double b, TrackPoint a)

			{ return a*b; }

		public static TrackPoint operator/ (TrackPoint a, double b)

			{ return a.spawn(a.point/b, a.time/b, a.pressure/b, a.tilt/b); }

	}

}