How Can I set the system name for a Pipe?

[Bruno_Neves_Pires_Silva]

How Can I set the system name for a Pipe?

  The parameter is read-only. In the interface, I can change it selecting the pipe and then in the tab Piping System I can change:

//The parameter is read-only

Parameter prm =  _pipe.get_Parameter(BuiltInParameter.RBS_SYSTEM_NAME_PARAM);

[Aaron.Lu]

Dear Bruno,

It cannot be set system name directly, even in UI.
I think the right way should be: connect equipments/components in the system you want to change to with this pipe

[Bruno_Neves_Pires_Silva]

Dear Aaron.

    Thank you for your reply. 

    But yes, it can be set in UI. See the attached image. Selecting the pipe, and selecting the Piping System tab, I can change the system name. But I can't do the same through API.

     But I didnt understand how connecting equipments/components can help.

Regards, 

Bruno Neves

[Bruno_Neves_Pires_Silva]

In fact, is this same problem, that was not yet answered:

https://forums.autodesk.com/t5/revit-api/system-name-is-changing-after-new-pipe-is-created/td-p/5652...

Is there a solution ?

[Aaron.Lu]

I see, you can do that in UI in the edit mode, however you can only change to a new name which does not exist.
There should be no API counterpart.

then is it feasible to change the name of the PipingSystem directly?
i.e. (Pipe.MEPSystem as PipingSystem).Name = "the new name"

[Bruno_Neves_Pires_Silva · Accepted solution]

Hi, Aaron.

  Thank you for your reply.

   when I get the parameter from the MEPSsytem is not read only and I can change the name. The problem is that I coud not set the same name of the previous pipe.

Augusto Gonçalves helped me on this, the problem was thas I was not connecting properly the pipes in the previous pipe system. When I did, the pipes assumed the right name, and it was not necessary change the name.

Best Regards,

Bruno Neves.

[Aaron.Lu]

cool, this is actually the solution I've provided in the first time, maybe I did not make it clear 🙂

[jeremytammik]

Dear Bruno,

Thank you for confirming that this approach really does work.

Can you provide a code snippet to demonstrate the exact steps?

Then I can publish the full detailed solution on The Building Coder to make it easier to find and understand and preserve it for posteriority.

Thank you!

Cheers,

Jeremy

[Bruno_Neves_Pires_Silva]

Ok, Jeremy, here is what I did.

But I dont know how to format this thing properly:

double SplitSize = 3000,
SplitTol = 150;
private void SplitPipe(Pipe _pipe, Document doc, Transaction t)
{
if (_pipe == null)
return;

LocationCurve lc = _pipe.Location as LocationCurve;
Curve cv = lc.Curve;
ElementId _pipeMEP = new ElementId(_pipe.MEPSystem.GetTypeId().IntegerValue);
ElementId _pipeType = new ElementId(_pipe.PipeType.Id.IntegerValue);
ElementId _pipeLvl = new ElementId(_pipe.ReferenceLevel.Id.IntegerValue);
string diam_s = _pipe.get_Parameter(BuiltInParameter.RBS_PIPE_DIAMETER_PARAM).AsValueString();
int i;
double leng1 = Util.FootToMm(cv.Length);

if (leng1 < (SplitSize + SplitTol))
return;

XYZ sp = cv.GetEndPoint(0), ep = cv.GetEndPoint(1);

Connector c4, conStart = null, conEnd = null;
foreach (Connector cn in _pipe.ConnectorManager.Connectors)
if (cn.IsConnected)
foreach (Connector c2 in cn.AllRefs)
if (c2.Owner.Id != _pipe.Id)
{
double d1 = c2.Origin.DistanceTo(sp);
double d2 = c2.Origin.DistanceTo(ep);

if (d1 < d2)
conStart = c2;
else
conEnd = c2;
}

doc.Delete(_pipe.Id);

List<XYZ> pts = SplitLine(cv.GetEndPoint(0), cv.GetEndPoint(1), SplitSize);
Pipe pp1 = null, pp2 = null;

for (i = 1; i < pts.Count; i += 2)
{
pp2 = Pipe.Create(doc, _pipeMEP, _pipeType, _pipeLvl, pts[i - 1], pts[i]);
pp2.get_Parameter(BuiltInParameter.RBS_PIPE_DIAMETER_PARAM).SetValueString(diam_s);

if (pp1 != null)
{
Connector c1 = GetConnectorClosestTo(pp1, pts[i - 1]),
c2 = GetConnectorClosestTo(pp2, pts[i - 1]);
FamilyInstance luva = doc.Create.NewUnionFitting(c1, c2);

}
else if (conStart != null)
{
c4 = GetConnectorClosestTo(pp2, pts[i - 1]);
conStart.ConnectTo(c4);
}

if ((conEnd != null) && (i == (pts.Count - 1)))
{
c4 = GetConnectorClosestTo(pp2, pts[i]);
conEnd.ConnectTo(c4);
}
pp1 = pp2;
}
}
//-------------------------------------------------------------------------
List<XYZ> SplitLine(XYZ sp, XYZ ep, double leng_mm)
{
List<XYZ> rval = new List<XYZ>();
double dist = sp.DistanceTo(ep),
leng_foot = Util.MmToFoot(leng_mm),
tol = Util.MmToFoot(SplitTol);

if (dist == 0)
return rval;

rval.Add(sp);

if (dist <= leng_foot + tol)
{
rval.Add(ep);
return rval;
}

double prop = dist / leng_foot;
int n = (int)Math.Floor(prop);

XYZ gap, step, mid2, mid1 = sp;

step = ((ep - sp) / prop);
gap = 0.01 * (ep - sp) / dist;
for (int i = 0; i < n; i++)
{
mid1 = mid1 + step;

if (mid1.DistanceTo(ep) < tol)
break;
mid2 = mid1 + gap;

rval.Add(mid1);
rval.Add(mid2);
}

rval.Add(ep);

return rval;
}
//-------------------------------------------------------------------------
Connector GetConnectorClosestTo(Element e, XYZ p)
{
ConnectorManager cm = GetConnectorManager(e);
return null == cm ? null : GetConnectorClosestTo(cm.Connectors, p);
}
//-------------------------------------------------------------------------------
Connector GetConnectorClosestTo(ConnectorSet connectors, XYZ p)
{
Connector targetConnector = null;
double minDist = double.MaxValue;

foreach (Connector c in connectors)
{
double d = c.Origin.DistanceTo(p);

if (d < minDist)
{
targetConnector = c;
minDist = d;
}
}
return targetConnector;
}
//-------------------------------------------------------------------------------
ConnectorManager GetConnectorManager(Element e)
{
MEPCurve mc = e as MEPCurve;
FamilyInstance fi = e as FamilyInstance;

if (null == mc && null == fi)
throw new ArgumentException("Element is neither an MEP curve nor a fitting.");

return null == mc ? fi.MEPModel.ConnectorManager : mc.ConnectorManager;
}