Skip to main content
Solved

I want to Clip my Point Cloud with Revit Geometry

  • July 3, 2018
  • 2 replies
  • 74 views
M
Forum|alt.badge.img

I get a Point Cloud from Multicopter Surveying (Photogrammetry), stored in E57 File. This Point Cloud should be clipped to an Area of Interest, stored in Revit Model. So I exported the Model with the Revit Exporter to '*.rvz' and IFC4. I read the Geometry from IfcBeam. After this I create the Hull of the Geometry (2D) and send it to the Clipper. When I inspect the geometry with the FME Inspector it looks correct.

After the clip-operation the point cloud is cutted wrong on to the lower right corner.

I tested also the geometry extraction with SurfaceReplacer in combination with 2D Forcer, same problem... To test the correct position of the two parts I inspect it.

Workspace looks like this (rotater and offsetter beacuse there is a bad georeference):

Should I use other transformers for the Point Cloud clip-operation? Any ideas?

Thank you!

Best answer by daveatsafe

Hi @matze94,

Instead of the HullReplacer, please try the SurfaceFootprintReplacer to generate a bounding polygon from the Revit solid geometry.

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.

2 replies

daveatsafe
Safer
Forum|alt.badge.img+19
  • daveatsafeSafer
  • Safer
  • 1637 replies
  • Best Answer
  • July 3, 2018

Hi @matze94,

Instead of the HullReplacer, please try the SurfaceFootprintReplacer to generate a bounding polygon from the Revit solid geometry.

M
Forum|alt.badge.img
  • matze94
  • Author
  • 2 replies
  • July 4, 2018

Hi @matze94,

Instead of the HullReplacer, please try the SurfaceFootprintReplacer to generate a bounding polygon from the Revit solid geometry.

Hi @DaveAtSafe,

 

 

thanks for the hint. It doesnt work after including the transformer.

 

Then I have seen the PointCloudTransformationApplier. I inserted the transformer after the rotater and offsetter (point cloud branch), et voila, clipper works fine! So it is necessary to apply the tranformation operation (Rotater and Offsetter) for point clouds?!

 

 

Thanks for your help! :)

 

Community Stats

32,068
Posts
121,762
Replies
39,693
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.