Revit MEP二次开发之连接器Connector

连接器是mep的专有概念，相当于管类的内置几何参数。
比如一条风管，相当于一条线段，线段就有两个端点。
这两个端点就保存在连接器中。
其他可能有不止两个端点的概念。

[Transaction(TransactionMode.Automatic)]
[Regeneration(RegenerationOption.Manual)]
[Journaling(JournalingMode.NoCommandData)]
public class GetConnector : IExternalCommand
{
    public Result Execute(ExternalCommandData commandData, ref string messages, ElementSet elements)
    {
        try
        {
            if (null == commandData)
            {
                throw new ArgumentNullException("commandData");
            }

            UIApplication uiApp = commandData.Application;
            Document doc = uiApp.ActiveUIDocument.Document;
            Selection sel = uiApp.ActiveUIDocument.Selection;

            MessageBox.Show("请选择一个风管");

            Reference refelem = sel.PickObject(ObjectType.Element, "请选择一个风管");

            Duct duct = refelem.Element as Duct;
            if (duct == null)
            {
                return Result.Cancelled;
            }

            //取得对象连接器集合的方法
            ConnectorSetIterator csi = duct.ConnectorManager.Connectors.ForwardIterator();

            IList<XYZ> xyzList = new List<XYZ>();
            while (csi.MoveNext())
            {
                Connector conn = csi.Current as Connector;//遍历所有的连接器
                xyzList.Add(conn.Origin);
            }

            doc.Delete(duct);//删除风管
            //NewLine(xyz1,xyz2,是线段还是直线);在原来的位置画一条直线直线，却不显示。
            uiApp.Application.Create.NewLine(xyzList.ElementAt(0), xyzList.ElementAt(1), true);

            //在原来的位置创建一个Pipe
            FilteredElementCollector filterCollector = new FilteredElementCollector(doc);
            filterCollector.OfClass(typeof(PipeType));
            PipeType pipeType = filterCollector.FirstElement() as PipeType;

            if (null != pipeType)
            {
                doc.Create.NewPipe(xyzList.ElementAt(0), xyzList.ElementAt(1), pipeType);
            }
        }
        catch (Exception e)
        {
            messages = e.Message;
            return Result.Failed;
        }

        return Result.Succeeded;
    }
}

20110330更新
连接器的方向

/*判断风管的流方向
 * 双向     FlowDirectionType.Bidirectional
 * 只进不出 FlowDirectionType.In
 * 只出不进 FlowDirectionType.Out
 */
[Transaction(TransactionMode.Automatic)]
[Regeneration(RegenerationOption.Automatic)]
public class theDirectionType : IExternalCommand
{
    public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elements)
    {
        UIApplication uiApp = commandData.Application;
        Document doc = uiApp.ActiveUIDocument.Document;
        Selection sel = uiApp.ActiveUIDocument.Selection;

        Reference refelem = sel.PickObject(ObjectType.Element, "请选择一个风管");
        Duct duct = refelem.Element as Duct;

        ConnectorSetIterator csi = duct.ConnectorManager.Connectors.ForwardIterator();
        while (csi.MoveNext())
        {
            Connector conn = csi.Current as Connector;
            if (conn.Direction == FlowDirectionType.Bidirectional)
            {
                MessageBox.Show("双向");
            }
            else if (conn.Direction == FlowDirectionType.In)
            {
                MessageBox.Show("只进不出");
            }
            else if (conn.Direction == FlowDirectionType.Out)
            {
                MessageBox.Show("只出不进");
            }
        }

        return Result.Succeeded;
    }
}

end