static Core.Geometry.Rectangle BBoxOfObjs(IEnumerable<object> objs)
{
var bb = new Core.Geometry.Rectangle(0, 0, 0, 0);
bool boxIsEmpty = true;
foreach (object o in objs) {
var node = o as DrawingNode;
Core.Geometry.Rectangle objectBb;
if (node != null)
objectBb = node.BoundingBox;
else {
var edge = o as DrawingEdge;
if (edge != null)
objectBb = edge.BoundingBox;
else
continue;
}
if (boxIsEmpty) {
bb = objectBb;
boxIsEmpty = false;
}
else
bb.Add(objectBb);
}
return bb;
}
/// <summary>
/// creates the port visual if it does not exist, and sets the port location
/// </summary>
/// <param name="portLocation"></param>
public void SetSourcePortForEdgeRouting(Point portLocation)
{
var box = new Core.Geometry.Rectangle(portLocation);
box.Pad(UnderlyingPolylineCircleRadius);
if (SourcePortIsPresent) {
var prevBox = new Core.Geometry.Rectangle(SourcePortLocation);
prevBox.Pad(UnderlyingPolylineCircleRadius);
box.Add(prevBox);
}
SourcePortIsPresent = true;
SourcePortLocation = portLocation;
panel.Invalidate(MapSourceRectangleToScreenRectangle(box));
}