Skip to main content
Solved

Orientation problem, transforming from 2,5D Esri Shape into IFC files

  • December 2, 2016
  • 4 replies
  • 38 views
matias
Contributor
Forum|alt.badge.img

I have been Working with Esri Shape 2,5D and transforming them into IFC. I have follow the CADtoIFC example but i will like to have the buildings in ifcBuilding because i don't have any information about the wall, Slab or Roof

I generate an Area(polygon) from a lines then use Extrude to get the height of the building, aggregate sam attributes to the Polygon, then use GeometryPropertySetter /Geometry Name="Body"

the IFC file look like this

and just after Aggregator_5 in FME DATA Inspector look like this

As you can see is missing one building and a part of the roof is wrong have anyone know how to fix this or what can be the problem?

Best answer by daveatsafe

Hi Matias,

It appears that the IFC writer is presently a little touchy about the geometry it receives.

The missing building is a MultiSolid, and needs to be converted to an Aggregate in order to write out. You can do this with a GeometryCoercer transformer. Set the Geometry Type to fme_aggregate, and leave the default Geometry XQuery.

The building with incorrect roof seems to be due to an issue the writer has with the Extrusion. I will have our development team look at this to find the root of the problem. However, you can avoid the issue by converting the Extrusion to a BRep Solid before writing.

Add a second GeometryCoercer, and set the Geometry Type to fme_brep_solid. In this one we want to set the Geometry XQuery to: This part, Geometry Type, =, IFMEExtrusion. This will ensure that only the Extrusion geometries are modified.

With both these GeometryCoercers in place, you should get proper IFC Buildings output.

This post is closed to further activity.
It may be an old question, an answered question, an implemented idea, or a notification-only post.
Please check post dates before relying on any information in a question or answer.
For follow-up or related questions, please post a new question or idea.
If there is a genuine update to be made, please contact us and request that the post is reopened.

4 replies

daveatsafe
Safer
Forum|alt.badge.img+20
  • daveatsafeSafer
  • Safer
  • December 2, 2016

It would be great if I could have a closer look at the data being sent to the IFC writer. Please add a Recorder to your workspace right after the Aggregator, then run the workspace again. Send the resulting FFS file and workspace to me at support@safe.com, with Attn Dave in the subject.

I will examine the features to see if I can find a reason for the missing and offset buildings, and create a problem report if the IFC writer is the cause.

daveatsafe
Safer
Forum|alt.badge.img+20
  • daveatsafeSafer
  • Safer
  • Best Answer
  • December 3, 2016

Hi Matias,

It appears that the IFC writer is presently a little touchy about the geometry it receives.

The missing building is a MultiSolid, and needs to be converted to an Aggregate in order to write out. You can do this with a GeometryCoercer transformer. Set the Geometry Type to fme_aggregate, and leave the default Geometry XQuery.

The building with incorrect roof seems to be due to an issue the writer has with the Extrusion. I will have our development team look at this to find the root of the problem. However, you can avoid the issue by converting the Extrusion to a BRep Solid before writing.

Add a second GeometryCoercer, and set the Geometry Type to fme_brep_solid. In this one we want to set the Geometry XQuery to: This part, Geometry Type, =, IFMEExtrusion. This will ensure that only the Extrusion geometries are modified.

With both these GeometryCoercers in place, you should get proper IFC Buildings output.

M
Forum|alt.badge.img
  • maxbuiaus
  • January 29, 2018

Dear @matias

I am in a similar problem with having no geometry in the output. May I have a closer look at your input data and workspace? My email is s3585629@student.rmit.edu.au

My appreciated!

fmelizard
Safer
Forum|alt.badge.img+21
  • fmelizardSafer
  • Safer
  • January 29, 2018

Dear @matias

I am in a similar problem with having no geometry in the output. May I have a closer look at your input data and workspace? My email is s3585629@student.rmit.edu.au

My appreciated!

Hi @maxbuiaus. As this a an old thread, I would suggest you create a new question: https://knowledge.safe.com/questions/ask.html

 

 

In your new question, please include details such as:

 

  • A clear statement of the problem you are trying to resolve
  • The version of FME you are using, including build number and edition or FME trial?
  • A small sample of your data, or screenshots of the data in the FME Data Inspector
  • A description of your expected output, with screenshots if possible
  • Your FME workspace
  • Your FME translation log file
  • Any other information that may be useful to share
Thank you!

Community Stats

32,154
Posts
122,048
Replies
39,812
Members

Latest FME

Terms & ConditionsCookie settingsAccessibility statement
A product of
Safe Software respectfully acknowledges that we live, learn and work on the traditional and unceded territories of the Kwantlen, Katzie, and Semiahmoo First Nations.