How to find plane on pipe center line?

[pochao]

How to find plane on pipe center line?

[Kevin.Lawson.PE]

Autodesk.Revit.DB.Plumbing.Pipe pipe = Autodesk.Revit.DB.Plumbing.Pipe.Create(doc, pipeTypeId, levelId, startConnector, downstreamConnector);//whatever pipe you want the plane on 
ConnectorSet pipeConnectorSet = pipe.MEPSystem.ConnectorManager.Connectors;
List<Connector> pipeConnectorList = new List<Connector>();

foreach(Connector connector in pipeConnectorSet)
{
  pipeConnectorList.Add(connector);
}

Plane plane = Plane.CreateByThreePoints(pipeConnectorList[0].Origin, pipeConnectorList[1].Origin, new XYZ(pipeConnectorList[0].Origin.X, pipeConnectorList[0].Origin.Y + 10, pipeConnectorList[0].Origin.Z));

[pochao]

Thanks for your response

Does this case apply? ( Sloped, none vertical, none horizontal)

[Kevin.Lawson.PE]

Maybe, I'm not sure what your exact requirements are.  I was just giving you something to get started working the problem yourself. 

[pochao]

horizontal pipe:

connector.Origin.Y + 10

vertical pipe:

connector.Origin.X + 10

Others:

I can't find the third point

[Kevin.Lawson.PE]

The pipe has two connectors, one at each end, which I'm accessing with 

pipeConnectorList[0].Origin, pipeConnectorList[1].Origin,

The third point can be something off of that, as you said in the x, y, or z direction.  

[Revitalizer · Accepted solution]

Hi,

why not

Plane plane = Plane.CreateByNormalAndOrigin(pipeConnectorList[0].CoordinateSystem.BasisY, pipeConnectorList[0].CoordinateSystem.Origin);

Revitalizer

[pochao · Accepted solution]

Finally, I find this solution.

Dim pipeDirection As XYZ = conn0.Origin - conn1.Origin
Dim normal As XYZ = XYZ.BasisZ.CrossProduct(pipeDirection).Normalize
Dim translation As XYZ = normal.Multiply(10)
Dim thirdPoint As XYZ = conn1.Origin.Add(translation)

[Revitalizer]

Hi,

if the Pipe is vertical and pipeDirection equals XYZ.BasisZ (or minus XYZ.BasisZ), the cross product doesn't make sense.

You solution doesn't cover all possible cases.

Revitalizer

[pochao]

Sorry, only in xy plane.

[Revitalizer]

Hi,

no need to implement different case scenarios.

All vectors you need are already present in the connector's CoordinateSystem property:

https://thebuildingcoder.typepad.com/blog/2012/05/connector-orientation.html

So, the Pipe's orientation doesn't matter at all.

Just see my previous answer.

Revitalizer