public Gesture(GesturePoint[] points)
{
_points = points;
var first = _points[0];
var last = _points[_points.Length - 1];
var duration = last.Time - first.Time;
Delta = last.Point - first.Point;
Velocity = new Vector(Delta.X / duration, Delta.Y / duration);
}
/// <inheritdoc/>
protected override bool TryGetPoint(MouseEventArgs args, out GesturePoint point)
{
var inputElement = this.InputElement;
if (inputElement == null)
{
point = default(GesturePoint);
return(false);
}
point = new GesturePoint(args.GetPosition(inputElement), args.Timestamp);
return(true);
}
/// <inheritdoc />
protected override bool TryGetPoint(TouchEventArgs args, out GesturePoint point)
{
if (args is null)
{
throw new ArgumentNullException(nameof(args));
}
var inputElement = this.InputElement;
if (inputElement is null)
{
point = default;
return(false);
}
point = new GesturePoint(args.GetTouchPoint(inputElement).Position, args.Timestamp);
return(true);
}