How to Determine Centreline of a Pipe from Point Cloud

[jacob.small]

@Gcf_Design

One minute it works, next it doesn’t, then if it works if returns a completely incorrect diameter pipe etc. ahhhh

Try running this via Dynamo Player, or closing without saving the graph between runs. It sounds as if you’re up against an element binding issue.

[Ewan_Opie]

Here is an example workflow for when you have a decent length of pipe scanned.
(I will see if I can find some time this week to test a partially scanned pipe as well)

[Ewan_Opie]

For incomplete pipe point information (vertical pipes only)…

[dineshsubramani]

Hi Ewan
The Topic is Awesome. I tried but get some issues please help me out
I have linked the point cloud and selected the pipe via section box in 3D view
and downloaded the sastrugi Package and used Pointcloud select points in view node

after this, a message box appears stating

clicked k and selected region from left bottom to right top but I get another message box stating!

there is only one view open in my project
Thanks in Advance have a Nice Day

[Ewan_Opie]

Hi @dineshsubramani

This node has been updated (issue found previously) and is available for download from my website. Hopefully replacing the dyf in your packages folder solves your issue.
Sastrugi Package - Updated
This update will be included in the v2.0 release. (date pending)

[dineshsubramani]

Thanks a Lot @Ewan_Opie
i continued the script and i got another issue the circle is formed in the opposite direction may i know how can i sort it out

Thanks in Advance

[Ewan_Opie]

Check that the Lacing on the Geometry.ClosestPointTo node is set to CrossProduct, so that all the surfaces and points are considered.

[dineshsubramani]

It Works Thanks a Lot for your Kindness @Ewan_Opie

[Gcf_Design]

Ewan,

Many thanks for further input.

I shall look at what you have posted.

Did you say that your nodes downloaded a few days ago have been updated?

[Gcf_Design]

Ewan,

Hi.

I tried your variation, however, no joy:

I have got it to occasionally work, and you have got it to work, however, it does appear to be hit and miss, mostly miss

[srinivas.vanka]

Dear Dinesh,

Iam also stuck with the above issue. Iam new to dynamo. Kindly share the script file please. i mean creating the circle in opposite direction

Srinivas

[dineshsubramani]

Dear srinivas
It has been a year. currently I don’t have that script
Sorry for the inconvenience

[srinivas.vanka]

Dear Ewan_Opie,

Could you please go through the attached below snap shot and advise where went wrong. Appreciate if you could advise me the corrections

!

[JustinStirling]

@Ewan_Opie, could something similar be used for ductwork too?

[Ewan_Opie]

Yes, this should be entirely possible.

Do you have a workflow you have been exploring to allow for me/others to assist?

One consideration is an allowance for duct insulation, as this would probably be the surface returned from laser scanning.