public override void HandleMouseMove(MouseEventArgs e)
{
base.HandleMouseMove(e);
if (prePoint == default)
{
return;
}
var targetPoints = new List <Point>(points);
var currentPoint = e.GetPosition(Canvas);
currentPoint = AlignPointToXY(currentPoint);
targetPoints.Add(currentPoint);
if (element == null)
{
element = new DrawingLineString(targetPoints, targetPoints.First() == targetPoints.Last());
Canvas.AddVisual(element);
}
else
{
(element as DrawingLineString).Update(targetPoints, targetPoints.First() == targetPoints.Last());
}
element.Render(DrawingCanvas.DefaultPen);
}
public override void HandleMouseDown(MouseButtonEventArgs e)
{
base.HandleMouseDown(e);
if (e.ChangedButton != MouseButton.Left)
{
return;
}
var point = e.GetPosition(Canvas);
if (prePoint == default || (prePoint != default && point != prePoint))
{
var drawingPoint = new DrawingPoint(point);
drawingPoint.Render(DrawingCanvas.DefaultPen);
Canvas.AddVisual(drawingPoint);
}
prePoint = point;
}