Blender exporter broken in Ubuntu

[fariazz]

Hi,

I tried the blender exporter script in Ubuntu, on Blender 2.72 and got this error. Same error in a blank project or existing blender files.

    Exporter version: 3.0.0, Blender version: 2.72 (sub 0)
========= Conversion from Blender to Babylon.js =========
    Python World class constructor completed
    processing begun of mesh:  Cube
        processing begun of baked material:  Cube
========= An error was encountered =========
  File "/home/fariazz/.config/blender/2.72/scripts/addons/io_export_babylon.py", line 287, in execute
    mesh = Mesh(object, scene, nextStartFace, forcedParent, nameID, self)
  File "/home/fariazz/.config/blender/2.72/scripts/addons/io_export_babylon.py", line 695, in __init__
    bakedMat = BakedMaterial(exporter, object, recipe)
  File "/home/fariazz/.config/blender/2.72/scripts/addons/io_export_babylon.py", line 1803, in __init__
    bpy.ops.uv.smart_project(angle_limit = 66.0, island_margin = 0.0, user_area_weight = 1.0, use_aspect = True)
  File "/home/fariazz/Temp/blender/blender-2.72b-linux-glibc211-x86_64/2.72/scripts/modules/bpy/ops.py", line 188, in __call__
    ret = op_call(self.idname_py(), None, kw)
ERROR:  Converting py args to operator properties: : keyword "use_aspect" unrecognized
========= end of processing =========
elapsed time:  0 min, 0.0011 secs

When using this version of the python script it works well: https://github.com/BabylonJS/Babylon.js/blob/c0b7e6100d8097ac9608fe48ab69e294c67799e9/Exporters/Blender/io_export_babylon.py on Blender 2.75a

[fariazz]

With that older script I can export a blank new project, but when trying some existing Blender files I get an error regarding UV Editing:

    Exporter version: 3.0.0, Blender version: 2.75 (sub 0)
========= Conversion from Blender to Babylon.js =========
    Python World class constructor completed
    processing begun of mesh:  leaves.001
        processing begun of Standard material:  leaves
        num positions      :  16440
        num normals        :  16440
        num uvs            :  0
        num uvs2           :  0
        num colors         :  0
        num indices        :  36990
    processing begun of mesh:  stems_1.001
        processing begun of Standard material:  stems_1
        num positions      :  2457
        num normals        :  2457
        num uvs            :  0
        num uvs2           :  0
        num colors         :  0
        num indices        :  14175
    processing begun of mesh:  trunk.001
        processing begun of Standard material:  trunk
        num positions      :  481
        num normals        :  481
        num uvs            :  0
        num uvs2           :  0
        num colors         :  0
        num indices        :  2868
    processing begun of mesh:  trunk
        registered as also a user of material:  trunk
        num positions      :  481
        num normals        :  481
        num uvs            :  0
        num uvs2           :  0
        num colors         :  0
        num indices        :  2868
    processing begun of mesh:  stems_1
        registered as also a user of material:  stems_1
        num positions      :  2457
        num normals        :  2457
        num uvs            :  0
        num uvs2           :  0
        num colors         :  0
        num indices        :  14175
    processing begun of mesh:  leaves
        registered as also a user of material:  leaves
        num positions      :  16440
        num normals        :  16440
        num uvs            :  0
        num uvs2           :  0
        num colors         :  0
        num indices        :  36990
    processing begun of mesh:  Plane.019
        processing begun of Standard material:  Material.039
        num positions      :  0
        num normals        :  0
        num uvs            :  0
        num uvs2           :  0
        num colors         :  0
        num indices        :  0
    processing begun of mesh:  Plane.018
        registered as also a user of material:  Material.039
        num positions      :  0
        num normals        :  0
        num uvs            :  0
        num uvs2           :  0
        num colors         :  0
        num indices        :  0
    processing begun of mesh:  Cube.059
        processing begun of Standard material:  Material.018
            WARNING: Material has image texture with no UV map assigned:  "Tex.008" ignored
        num positions      :  16
        num normals        :  16
        num uvs            :  0
        num uvs2           :  0
        num colors         :  0
        num indices        :  72
    processing begun of mesh:  Cube.058
        processing begun of baked material:  Cube.058
            Internal baking texture, type: TEXTURE, mapped using: BakingUV
========= An error was encountered =========
  File "/home/fariazz/.config/blender/2.75/scripts/addons/io_export_babylon.py", line 287, in execute
    mesh = Mesh(object, scene, nextStartFace, forcedParent, nameID, self)
  File "/home/fariazz/.config/blender/2.75/scripts/addons/io_export_babylon.py", line 695, in __init__
    bakedMat = BakedMaterial(exporter, object, recipe)
  File "/home/fariazz/.config/blender/2.75/scripts/addons/io_export_babylon.py", line 1818, in __init__
    self.bake('diffuseTexture', 'DIFFUSE_COLOR', 'TEXTURE', image, mesh, exporter, recipe)
  File "/home/fariazz/.config/blender/2.75/scripts/addons/io_export_babylon.py", line 1852, in bake
    self.bakeInternal(internal_type, image)
  File "/home/fariazz/.config/blender/2.75/scripts/addons/io_export_babylon.py", line 1866, in bakeInternal
    bpy.data.screens['UV Editing'].areas[1].spaces[0].image = image
ERROR:  'bpy_prop_collection[key]: key "UV Editing" not found'
========= end of processing =========
elapsed time:  0 min, 0.3301 secs

This is the blender file: http://www.blendswap.com/blends/view/4764

[Palmer-JC]

The use_aspect problem is related to your Blender version, will set the version to 2,75.0 next release.

Just saw the second one. Do not know how you cannot have 'UVEditing' screen, but will look at. I downloaded that. I see it was made with Blender 2.49. Wow that is old. Best I can probably do is perform a check for 'UVEditing' and skip baking in that case. That would be the equivalent of previous exporter (geometry with out materials). Not the highest priority, but having a test .blend might work in your favor.

[Palmer-JC]

Ok,
I have put a check at the end of the BakingRecipe constructor, which ensures UVEditing exists when bakingRequired, otherwise a warning is put in log file & bakingRequired is turned off. Just a standard material is made.

I am looking at 3 other things. If they can be fixed quick, want to get them on the same version, 3.0.1. If you really need this & not just testing (which I appreciate), paste this at the end of BekingRecipe:

        # check for really old .blend file, eg. 2.49, to ensure that everything requires exists
        if self.needsBaking and bpy.data.screens.find('UV Editing') == -1:
            Main.warn('Contains material requiring baking, but resources not available.  Probably .blend very old', 2)
            self.needsBaking = False     

[fariazz]

@Palmer-JC thank you so much! it works like a charm now.