private void BtnPolyLine_Checked(object sender, RoutedEventArgs e)
{
_tool = ToolType.Polyline;
_polyLine = new PolyLine1();
_polyLine.Points = new PointCollection();
grid.Cursor = Cursors.Cross;
CanHit(false);
_pan = false;
}
public void MouseDownPolyLine(Panel canvas, MouseButtonEventArgs e, Matrix screenToWorld, PolyLine1 ply)
{
Point p = e.GetPosition(canvas);
p = screenToWorld.Transform(p);
var point = new Point(p.X, p.Y);
ply.Points.Add(point);
_polyline = ply;
PolyLine1 clonePy = new PolyLine1();
clonePy.Points = new PointCollection();
_line = new System.Windows.Shapes.Line();
//_line = new Line();
_line.Stroke = new SolidColorBrush(Colors.Black);
_line.StrokeDashArray.Add(4);
_line.X1 = p.X;
_line.Y1 = p.Y;
_line.X2 = p.X;
_line.Y2 = p.Y;
if (ply.Points.Count == 1)
{
// ply.Points.Add(point);//添加新的数据点
canvas.Children.Add(ply);
canvas.Children.Add(_line);
lastIndex = canvas.Children.IndexOf(ply);
}
else
{
canvas.Children.RemoveAt(lastIndex);
clonePy.Points = ply.Points.Clone();
_polyline = clonePy;
canvas.Children.Insert(lastIndex, clonePy);//重新new 新节点否则不会onrender 执行
canvas.Children.RemoveAt(lastIndex + 1);
canvas.Children.Insert(lastIndex + 1, _line);
}
}
public void MouseRightDown(Panel canvas, MouseButtonEventArgs e, Matrix screenToWorld, PolyLine1 ply)
{
}
public void MouseDownPolyLine(Panel canvas, MouseButtonEventArgs e, Matrix screenToWorld, PolyLine1 ply)
{
return;
}
public void MouseRightDown(Panel canvas, MouseButtonEventArgs e, Matrix screenToWorld, PolyLine1 ply)
{
if (_polyline == null)
{
return;
}
_polyline.IsSelected = true;
//_polyline.Points.Clear();
// ply.Points.Clear();
_line.X1 = _line.X2 = _line.Y1 = _line.Y2 = 0;
}
