by Fenton Webb
Here’s how to iterate a pipe network in Plant3d…
First in .NET…
[CommandMethod("PipeWalk")]
public void pipeWalk()
{
// 4.1 Declare a variable as a PlantProject. Instantiate it using
// the CurrentProject of PlantApplication
PlantProject mainPrj = PlantApplication.CurrentProject;
// 4.2 Declare a Project and instantiate it using
// ProjectParts[] of the PlantProject from step 4.1
// use "Piping" for the name. This will get the Piping project
Project prj = mainPrj.ProjectParts["Piping"];
// 4.3 Declare a variable as a DataLinksManager. Instantiate it using
// the DataLinksManager property of the Project from 4.2.
DataLinksManager dlm = prj.DataLinksManager;
// PipingProject pipingPrj = (PipingProject) mainPrj.ProjectParts["Piping"];
// DataLinksManager dlm = pipingPrj.DataLinksManager;
// Get the TransactionManager
TransactionManager tm =
AcadApp.DocumentManager.MdiActiveDocument.Database.TransactionManager;
// Get the AutoCAD editor
Editor ed = AcadApp.DocumentManager.MdiActiveDocument.Editor;
// Prompt the user to select a pipe entity
PromptEntityOptions pmtEntOpts = new PromptEntityOptions("Select a Pipe : ");
PromptEntityResult pmtEntRes = ed.GetEntity(pmtEntOpts);
if (pmtEntRes.Status == PromptStatus.OK)
{
// Get the ObjectId of the selected entity
ObjectId entId = pmtEntRes.ObjectId;
// Use the using statement and start a transaction
// Use the transactionManager created above (tm)
using (Transaction tr = tm.StartTransaction())
{
try
{
// 4.4 Declare a variable as a Part. Instantiate it using
// the GetObject Method of the Transaction created above (tr)
// for the ObjectId argument use the ObjectId from above (entId)
// Open it for read. (need to cast it to Part)
Part pPart = (Part)tr.GetObject(entId, OpenMode.ForRead);
// 4.5 Declare a variable as a PortCollection. Instantiate it
// using the GetPorts method of the Part from step 4.4.
// use PortType.All for the PortType.
PortCollection portCol = pPart.GetPorts(PortType.All); // (PortType.Both);
// 4.6 Use the WriteMessage function of the Editor created above (ed)
// print the Count property of the PortCollection from step 4.5.
// use a string similar to this: "\n port collection count = "
ed.WriteMessage("\n port collection count = " + portCol.Count);
// 4.7 Declare a ConnectionManager variable.
// (Autodesk.ProcessPower.PnP3dObjects.ConnectionManager)
// Instantiate the ConnectionManager variable by making it
// equal to a new Autodesk.ProcessPower.PnP3dObjects.ConnectionManager();
ConnectionManager conMgr = new Autodesk.ProcessPower.PnP3dObjects.ConnectionManager();
// 4.8 Declare a bool variable named bPartIsConnected and make it false
bool bPartIsConnected = false;
// 4.9 Use a foreach loop and iterate through all of the Port in
// the PortCollection from step 4.5.
// Note: Put the closing curly brace below step 4.18
foreach (Port pPort in portCol)
{
// 4.10 Use the WriteMessage function of the Editor created above (ed)
// print the Name property of the Port (looping through the ports)
// use a string similar to this: "\nName of this Port = " +
ed.WriteMessage("\nName of this Port = " + pPort.Name);
// 4.11 Use the WriteMessage function of the Editor created above (ed)
// print the X property of the Position from the Port
// use a string similar to this: "\nX of this Port = " +
ed.WriteMessage("\nX of this Port = " + pPort.Position.X.ToString());
// 4.12 Declare a variable as a Pair and make it equal to a
// new Pair().
Pair pair1 = new Pair();
// 4.13 Make the ObjectId property of the Pair created in step 4.10
// equal to the ObjectId of the selected Part (entId)
pair1.ObjectId = entId;
// 4.14 Make the Port property of the Pair created in step 4.10
// equal to the port from the foreach cycle (step 4.7)
pair1.Port = pPort;
// 4.15 Use an if else and the IsConnected method of the ConnectionManager
// from step 4.7. Pass in the Pair from step 4.12
// Note: Put the else statement below step 4.17 and the closing curly
// brace for the else below step 4.18
if (conMgr.IsConnected(pair1))
{
// 4.16 Use the WriteMessage function of the Editor (ed)
// and put this on the command line:
// "\n Pair is connected "
ed.WriteMessage("\n Pair is connected ");
// 4.17 Make the bool from step 4.8 equal to true.
// This is used in an if statement in step 4.19.
bPartIsConnected = true;
}
else
{
// 4.18 Use the WriteMessage function of the Editor (ed)
// and put this on the command line:
// "\n Pair is NOT connected "
ed.WriteMessage("\n Pair is NOT connected ");
}
}
// 4.19 Use an If statement and the bool from step 4.8. This will be
// true if one of the pairs tested in loop above loop was connected.
// Note: Put the closing curly brace after step 4.26
if (bPartIsConnected)
{
// 4.20 Declare an ObjectId named curObjID make it
// equal to ObjectId.Null
ObjectId curObjId = ObjectId.Null;
// 4.21 Declare an int name it rowId
int rowId;
// 4.22 Declare a variable as a ConnectionIterator instantiate it
// using the NewIterator method of ConnectionIterator (Autodesk.ProcessPower.PnP3dObjects.)
// Use the ObjectId property of the Part from step 4.4
ConnectionIterator connectIter = ConnectionIterator.NewIterator(pPart.ObjectId); //need PnP3dObjectsMgd.dll
// You could Also use this, need to ensure that pPort is connected
// Use the ConnectionManager and a Pair as in the example above.
// conIter = ConnectionIterator.NewIterator(pPart.ObjectId, pPort);
// 4.23 Use a for loop and loop through the connections in the
// ConnectionIterator from step 4.22. The initializer can be empty.
// Use !.Done for the condition. use .Next for the iterator.
// Note: Put the closing curly brace after step 4.26
for (; !connectIter.Done(); connectIter.Next())
{
// 4.24 Make the ObjectId from step 4.20 equal to the ObjectId
// property of the ConnectionIterator
curObjId = connectIter.ObjectId;
// 4.25 Make the integer from step 4.21 equal to the return from
// FindAcPpRowId method of the DataLinksManager from step 4.3.
// pass in the ObjectId from step 4.24
rowId = dlm.FindAcPpRowId(curObjId);
//4.26 Use the WriteMessage function of the Editor (ed)
// and pring the integer from step 4.25. Use a string similar to this
// this on the command line:
// "\n PnId = " +
ed.WriteMessage("\n PnId = " + rowId);
}
}
}
catch (System.Exception ex)
{
ed.WriteMessage(ex.ToString());
}
}
}
}
now in C++…
// Iterate a pipe network (from specific part / port)
void ct_iter_port()
{
ads_name entname;
ads_point pt;
int ret = acedEntSel(L"\nSelect part on a network: ", entname, pt);
if (ret != RTNORM)
{
return; // cancelled
}
AcPp3dConnectionIterator* pIter = NULL;
try
{
AcDbObjectId objId;
eOkThrow(acdbGetObjectId(objId, entname));
AcDbObjectPointer<AcPpDb3dPart> pPart(objId, AcDb::kForRead);
eOkThrow(pPart.openStatus());
AcPp3dPortArray ports;
eOkThrow(pPart->getPorts(ports, AcPpDb3dPart::kBoth));
eOkThrow(pPart.close());
int index = -1;
do
{
ret = acedGetInt(L"\nEnter the port index: ", &index);
if (ret != RTNORM)
{
return; // cancelled
}
} while (index < 0 || index >= ports.length());
AcPp3dPair pair(objId, ports[index]);
eOkThrow(AcPp3dConnectionIterator::newIterator(pair, pIter));
for ( ; !pIter->done(); pIter->next())
{
AcDbObjectId curObjId;
eOkThrow(pIter->getObjectId(curObjId));
listPart(curObjId);
}
}
catch (const Acad::ErrorStatus& es)
{
acutPrintf(L"\nERROR: %d", es);
}
if (pIter != NULL)
{
delete pIter;
}
}
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