protected override void OnPreviewMouseMove(MouseEventArgs e)
{
var newPoint = Snap.ToGrid(e.GetPosition(this));
if (!DoubleUtils.Equals(newPoint, this.MousePosition))
{
this.MousePosition = newPoint;
}
}
internal bool NotifyMouseClick(Point currentPoint)
{
if (ClosedShape)
{
return(false);
}
currentPoint = Snap.ToGrid(currentPoint);
if (_points.Count != 0)
{
// check if new point has same coordinations as last point
var lastPoint = _points.Last();
if (DoubleUtils.Equals(lastPoint, currentPoint))
{
return(true);
}
// check if new point has same coordinations as first pont
var firstPoint = _points[0];
if (DoubleUtils.Equals(firstPoint, currentPoint))
{
CloseShape();
return(true);
}
}
_points.Add(currentPoint);
_lastLine = new LineViewModel(currentPoint.X, currentPoint.Y, _mousePosition.X, _mousePosition.Y);
this.Items.Add(_lastLine);
if (_closeLine == null && this.Items.Count == 2)
{
var firstPoint = _points[0];
_closeLine = new LineViewModel(_mousePosition.X, _mousePosition.Y, firstPoint.X, firstPoint.Y);
this.Items.Add(_closeLine);
}
return(true);
}
