void UpdateShape()
{
if (_points != null && _points.Count > 1)
{
var path = new APath();
path.SetFillType(_fillMode ? FillType.Winding : FillType.EvenOdd);
path.MoveTo(_density * (float)_points[0].X, _density * (float)_points[0].Y);
for (int index = 1; index < _points.Count; index++)
path.LineTo(_density * (float)_points[index].X, _density * (float)_points[index].Y);
UpdateShape(path);
}
}