X3D export fails on exporting a scene with a light #105235
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Reference: blender/blender-addons#105235
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System Information
Operating system: macOS-14.3.1-arm64-arm-64bit 64 Bits
Graphics card: Metal API Apple M1 Pro 1.2
Blender Version
Broken: version: 4.0.2, branch: blender-v4.0-release, commit date: 2023-12-05 07:41, hash:
9be62e85b727Worked: 3.6
Addon Information
Name: Web3D X3D/VRML2 format (2, 3, 1)
Author: Campbell Barton, Bart, Bastien Montagne, Seva Alekseyev
Short description of error
Exporting to X3D a scene with a light fails, there is an exception thrown in Python script, empty X3D file created on filesystem, Blender application does not quit or crash as a result of failure
Exact steps for others to reproduce the error
From the initial startup screen choose the File > Export > X3D Extensible 3D add-on , file name, orientation immaterial
********. Additional *************
Python exception trace:
Info: starting X3D export to '/Users/vmarchetti/Desktop/untitled.x3d'...
Traceback (most recent call last):
File "/Applications/Blender.app/Contents/Resources/4.0/scripts/addons/io_scene_x3d/init.py", line 224, in execute
return export_x3d.save(context, **keywords)
File "/Applications/Blender.app/Contents/Resources/4.0/scripts/addons/io_scene_x3d/export_x3d.py", line 1575, in save
export(file,
File "/Applications/Blender.app/Contents/Resources/4.0/scripts/addons/io_scene_x3d/export_x3d.py", line 1508, in export
export_main()
File "/Applications/Blender.app/Contents/Resources/4.0/scripts/addons/io_scene_x3d/export_x3d.py", line 1504, in export_main
export_object(ident, None, obj_main, obj_main_children)
File "/Applications/Blender.app/Contents/Resources/4.0/scripts/addons/io_scene_x3d/export_x3d.py", line 1446, in export_object
writePointLight(ident, obj, obj_matrix, data, world)
File "/Applications/Blender.app/Contents/Resources/4.0/scripts/addons/io_scene_x3d/export_x3d.py", line 482, in writePointLight
fw(ident_step + 'radius="%.4f" \n' % light.distance)
AttributeError: 'PointLight' object has no attribute 'distance'
Info: starting X3D export to '/Users/vmarchetti/Desktop/untitled2.x3d'...
Info: finished X3D export to '/Users/vmarchetti/Desktop/untitled2.x3d'
Saved session recovery to "/var/folders/b5/rdxvnr2j6tj69lzzl2q38nl40000gn/T/quit.blend"
Source sleuthing in git repository shows that the parameter 'distance' was removed in the source file blender/source/blender/makesrna/intern/rna_light.cc at c4ddf16 (July 5 2023) :
c4ddf16950@vmarchetti Can confirm this, the definition for radius should be
shadow_soft_sizeinstead ofdistanceFixed with
7717c30fc3Thanks @NRGSille , closing.
The term 'radius' is used in a different way for X3D lights (PointLight and Spotlight) than it is for Blender lights. In X3D, the lights illuminates objects that are closer to the light than the value of 'radius'. Pertinent X3D specification is https://www.web3d.org/documents/specifications/19775-1/V4.0/Part01/components/lighting.html#PointLight
The parameter cutoff_distance from the bpy light structure seems to be a closer match to the meaning of 'radius' for X3D lights.https://docs.blender.org/api/current/bpy.types.Light.html#bpy.types.Light.cutoff_distance
I'd also propose that the change of the export to X3D to use either shadow_soft_size or cutoff_distance, be matched by the corresponding change in the Import of an X3D Spotlight or PointLight
@vmarchetti thanks for the detailed explanation,
cutoff_distanceseems to be closer to the .x3d definition, will change it to that parameter.Should be fixed now with
487b433e6eand2a9e718930Hello, I have the exact same error message using Import > "X3D Extensible 3D (.x3d)" out of the box Blender feature on 4.0.2 (win64).
Is this solved problem with export also have impact on import or is it unrelated?
The file I am trying to open is the attached one.
@Full-Name-38 The error regarding the pointlight import is fixed in 4.2 but your file caused another error regarding texture coordinates
Ok, great, thanks. I was unsure this issue was also concerning import.
I am indeed aware of the texture problem and it doesn't seem to be a Blender issue as Chisel (https://www2.hrp.no/vr/tools/chisel/install.htm) returns the same error when it tries to validate the VRML file. It seems I need to contact Compusoft to understand why their Winner design software produces invalid VRML files (and why it doesn't produce anything newer than VRML) ;)
@NRGSille hi, AFAICS you've pushed fix to main. I think this should also go to 4.1 release branch.
You can
cherry-pickthese commits to 4.1 branch: https://developer.blender.org/docs/handbook/release_process/release_branch_merge_playbook/#fix-committed-to-main-should-have-been-in-release-branch@ThomasDinges ^
@PratikPB2123 done