private void InstallSnapPointGraphic(bool install)
{
IPointsGraphic subject = this.Graphic;
CompositeGraphic parent = subject.ParentGraphic as CompositeGraphic;
if (parent == null)
{
return;
}
if (install && subject.Points.Count > 0)
{
if (_snapPoint == null)
{
_snapPoint = new SnapPointGraphic();
}
if (!parent.Graphics.Contains(_snapPoint))
{
parent.Graphics.Add(_snapPoint);
}
_snapPoint.CoordinateSystem = subject.CoordinateSystem;
_snapPoint.Location = subject.Points[0];
_snapPoint.ResetCoordinateSystem();
parent.Draw();
}
else if (_snapPoint != null && parent.Graphics.Contains(_snapPoint))
{
parent.Graphics.Remove(_snapPoint);
parent.Draw();
}
}
static void Main(string[] args)
{
var compositeGraphic = new CompositeGraphic();
compositeGraphic.Add(new Ellipse());
compositeGraphic.Add(new Rectangle());
var anotherCompositeGraphic = new CompositeGraphic();
anotherCompositeGraphic.Add(new Ellipse());
anotherCompositeGraphic.Add(compositeGraphic);
anotherCompositeGraphic.Draw();
}
//画面刷新
private void du_refresh()
{
du.drawing = compositeGraphic.Draw();
du.InvalidateVisual();
}