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Maniphest T52846

Wrong normals when importing FBX from Revit
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Description

System Information
System-Info file attached,

Blender Version
Official 2.79 release

Short description of error
The normals of the geometry when imported from Revit as FBX are wrong.
I have attached the original FBX file that was exported from Revit.
Along with that I have attached an FBX file that I imported through Rhino and out to FBX again. This one is imported correctly into Blender.

Note that Revit can produce two types of FBX files. One which is new and one which is 2015 and previous.
(Also note that although the normals are wrong blender can import both while Rhino actually only supports the old one :) Good job guys)

Att: @Bastien Montagne (mont29)

Exact steps for others to reproduce the error
Import "Simple Revit Model to Blender New FBX.fbx" as attached. Note then that the normals are wrong.

Simple Revit Model to Blender.zip396 KBDownload

Revisions and Commits

rBA Blender Add-ons
rBAe89f46fe7727 Fix T52846: Wrong normals when importing FBX from Revit.
rBAb3c6d44409fe Fix T52846: Wrong normals when importing FBX from Revit.

Related Objects

Event Timeline

Ejnar Brendsdal (ejnaren) created this task.Sep 20 2017, 1:16 PM
Bastien Montagne (mont29) claimed this task.Sep 20 2017, 5:40 PM
Bastien Montagne (mont29) lowered the priority of this task from 90 to 50.
Bastien Montagne (mont29) edited projects, added Add-ons (Community); removed BF Blender.
Bastien Montagne (mont29) changed the task status from Unknown Status to Resolved by committing rBAb3c6d44409fe: Fix T52846: Wrong normals when importing FBX from Revit..Sep 20 2017, 5:41 PM
Bastien Montagne (mont29) added a commit: rBAb3c6d44409fe: Fix T52846: Wrong normals when importing FBX from Revit..
Ejnar Brendsdal (ejnaren) awarded a token.Sep 20 2017, 5:42 PM
Ejnar Brendsdal (ejnaren) added a comment.Sep 20 2017, 5:53 PM

@Bastien Montagne (mont29) you are the mainn! ??

Bastien Montagne (mont29) added a commit: rBAe89f46fe7727: Fix T52846: Wrong normals when importing FBX from Revit..Jan 1 2018, 4:52 PM
Bastien Montagne (mont29) mentioned this in T53684: 2.79a release - addons.Jan 3 2018, 12:33 PM
Paul Kotelevets (1D_Inc) added a subscriber: Paul Kotelevets (1D_Inc).Oct 16 2019, 11:37 PM

Yep, that was awesome)
Is it planned something for materials/textures support?

Paul Kotelevets (1D_Inc) awarded a token.Oct 16 2019, 11:38 PM
Paul Kotelevets (1D_Inc) added a comment.Oct 17 2019, 1:35 PM

(Also note that although the normals are wrong blender can import both while Rhino actually only supports the old one :) Good job guys)

I don't know how is it possible, but sometimes 3DsMax can't read FBX it just produced, while Blender can.
Such things made me a diamond donator.
That's so tough and awesome and dope, that I am really impressed. Thank you for this)