public void ApplyPoint(PointF point)
{
var offset = point.Subtract(_startPoint);
if (points.Count == 0)
{
points.Add(new GesturePoint { X = offset.X, Y = offset.Y, threshold = 10 });
}
else
{
var last = points.Last();
var lastPoint = new PointF(last.X, last.Y);
// first check distance from last point
if (lastPoint.DistanceTo(offset) > 10)
{
var currentAngle = _previousOffset.AngleTo(offset);
var previousAngle = lastPoint.AngleTo(_previousOffset);
var da = currentAngle - previousAngle;
if (da < -Math.PI) da += 2 * Math.PI;
if (da > Math.PI) da -= 2 * Math.PI;
if (da > 0.1)
{
AddPoint(_previousOffset);
}
}
}
_previousOffset = offset;
}
