26 Jan 2018

Model Derivative IFC issues

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UPDATE January 26th 2018:

All three of these IFC->SVF issues are now fixed. Please test your applications and let us know (via forge.help@autodesk.com) if you experience any other problems.

Sorry again for any inconvenience this may have caused you or your customers.


We're receiving reports from some Forge customers of unexpected changes to the Model Derivative IFC->SFV (Viewer) pipeline. The reported changes are:

  1. Materials and textures not being extracted.
  2. The model orientation in the resulting SVF is changed for IFC files from some sources.
  3. The Model Tree structure has changed.

Our engineering team are investigating these issues as a high priority. We will post an update on this blog once we have identified a solution. I apologize for any problems these changes have caused you.

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Stephen Preston

Stephen Preston has been with Autodesk since 2000, focusing on providing programming support, consulting, training and evangelism to external developers. He started his career in the UK and now lives in California in the US. Stephen’s current position is Global Manager of Developer Technical Services (DevTech), the worldwide team of API gurus providing technical services through the Autodesk Developer Network...