public void RemoveFigure(Figure figure)
{
if (figure == null)
{
return;
}
StartBulkEdit();
Selection.All.Remove(figure);
figure.Canvas = null;
_figures.Remove(figure);
SnapCluster.Remove(figure);
EndBulkEdit();
}
public Canvas(int zOrder)
{
CoordinateSystem = new CartesianCoordinateSystem(0, 0);
Selection = new Selection(this);
ZOrder = zOrder;
HandleFactory = new HandleFactory();
//InstallEditPolicy(new BoundingBoxSelectionPolicy());
//InstallEditPolicy(new SnapGridPolicy());
//InstallEditPolicy(new ConnectionModeKeyboardPolicy());
SnapCluster = new SnapCluster <Figure>(10, 10);
QuadTree = new QuadTree <Figure>(new Geo.Rectangle(0, 0, Width, Height));
}
public void AddFigure(Figure figure)
{
if (figure.Canvas == this)
{
return;
}
StartBulkEdit();
figure.Canvas = this;
if (figure.CanBeSnapTarget)
{
SnapCluster.Add(figure.GetSnapPoints(), figure);
}
QuadTree.Insert(figure);
_figures.Add(figure);
EndBulkEdit();
}
