Collada exporter not exporting selected child #73343

New Issue

Alexandre · 2020-01-23T13:31:40+01:00

Alexandre commented

2020-01-23 13:31:40 +01:00

System Information
Operating system: Linux-5.3.0-26-generic-x86_64-with-debian-buster-sid 64 Bits
Graphics card: Mesa DRI Intel(R) HD Graphics 520 (Skylake GT2) Intel Open Source Technology Center 4.5 (Core Profile) Mesa 19.2.1

Blender Version
Broken: version: 2.81 (sub 16), branch: master, commit date: 2019-12-04 11:32, hash: f1aa4d18d4

(also tested with Blender 2.83-c5c46e5b74a0-linux-glibc217-x86_64 and exactly same error)

Short description of error

When exporting a selected object, the resulting COLLADA file is corrupted only if this object is a child of another object in Blender.

Exact steps for others to reproduce the error

Open blender and dismiss dialog to use default scene.
Copy default cube (Shift+D) and parent it to the first one (CTRL+P with the two objects selected).
Select child cube.
Go to File > Export > Collada (Default) (.dae).
Make sure in settings that only "Selection Only", "Triangulate" is checked.
Export.

Now if I open the COLLADA file as a visual mesh in gazebo I get the following errors :

[Err] [Visual.cc:2252] Visual::InsertMesh no submeshes, this is an invalid mesh
[Err] [Visual.cc:372] Ogre Error:OGRE EXCEPTION(2:InvalidParametersException): Header chunk didn't match either endian: Corrupted stream? in Serializer::determineEndianness at /build/ogre-1.9-B6QkmW/ogre-1.9-1.9.0+dfsg1/OgreMain/src/OgreSerializer.cpp (line 89)
[Err] [Visual.cc:373] Unable to create a mesh from /home/erdnaxe/untitled.dae

At first I though it was a Ogre-related issue, but when I clean parent (ALT+P) then export it works.

**System Information** Operating system: Linux-5.3.0-26-generic-x86_64-with-debian-buster-sid 64 Bits Graphics card: Mesa DRI Intel(R) HD Graphics 520 (Skylake GT2) Intel Open Source Technology Center 4.5 (Core Profile) Mesa 19.2.1 **Blender Version** Broken: version: 2.81 (sub 16), branch: master, commit date: 2019-12-04 11:32, hash: `f1aa4d18d4` (also tested with Blender 2.83-c5c46e5b74a0-linux-glibc217-x86_64 and exactly same error) **Short description of error** When exporting a selected object, the resulting COLLADA file is corrupted only if this object is a child of another object in Blender. **Exact steps for others to reproduce the error** * Open blender and dismiss dialog to use default scene. * Copy default cube (Shift+D) and parent it to the first one (CTRL+P with the two objects selected). * Select child cube. * Go to File > Export > Collada (Default) (.dae). * Make sure in settings that only "Selection Only", "Triangulate" is checked. * Export. Now if I open the COLLADA file as a visual mesh in gazebo I get the following errors : ``` [Err] [Visual.cc:2252] Visual::InsertMesh no submeshes, this is an invalid mesh [Err] [Visual.cc:372] Ogre Error:OGRE EXCEPTION(2:InvalidParametersException): Header chunk didn't match either endian: Corrupted stream? in Serializer::determineEndianness at /build/ogre-1.9-B6QkmW/ogre-1.9-1.9.0+dfsg1/OgreMain/src/OgreSerializer.cpp (line 89) [Err] [Visual.cc:373] Unable to create a mesh from /home/erdnaxe/untitled.dae ``` At first I though it was a Ogre-related issue, but when I clean parent (ALT+P) then export it works.

Alexandre commented

2020-01-23 13:31:40 +01:00

Added subscriber: @erdnaxe

Alexandre commented

2020-01-23 13:34:50 +01:00

Demo file (Blender 2.81a and also 2.83alpha) : demo_blender2_81.blend

Generated COLLADA : untitled.dae

Demo file (Blender 2.81a and also 2.83alpha) : [demo_blender2_81.blend](https://archive.blender.org/developer/F8296899/demo_blender2_81.blend) Generated COLLADA : [untitled.dae](https://archive.blender.org/developer/F8296900/untitled.dae)

Alexandre commented

2020-01-23 14:13:55 +01:00

Gazebo demo project (read README) : gazebo.zip

Gazebo demo project (read README) : [gazebo.zip](https://archive.blender.org/developer/F8296944/gazebo.zip)

Richard Antalik commented

2020-02-24 15:41:32 +01:00

Added subscriber: @iss

Richard Antalik commented

2020-02-24 15:41:32 +01:00

Changed status from 'Needs Triage' to: 'Confirmed'

Richard Antalik commented

2020-02-24 15:41:32 +01:00

Not sure which part of process faild here (import or export), but this case is not working - nothing has been imported.

+-- Collada Import parameters------
| input file      : C:\Users\John\Desktop\work\bugs\T73343.dae
| -- |
| use units       : no
| autoconnect     : no
+-- Armature Import parameters ----
| find bone chains: no
| -- |
| min chain len   : 0
| fix orientation : no
| keep bind info  : no
+-- Import Scene --------
+----------------------------------
| Collada Import : OK
| -- |
+----------------------------------

Philipp Oeser removed the

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Collada exporter not exporting selected child #73343