[x3d-public] Blender 2.8 X3D support is making progress

Thu Mar 19 11:22:26 PDT 2020

On related note:

1. I just submitted a patch to Blender X3D exporter to fix exporting
objects with modifiers: https://developer.blender.org/T74934 ,
https://developer.blender.org/D7183 .

2. I upgraded my castle-anim-frames exporter to work with latest
Blender 2.8 . https://castle-engine.io/creating_data_blender.php#section_castle_anim_frames
. The exporter is a quick solution to export animations --
castle-anim-frames internally is just a series of static files (in X3D
or other format).

Regards,
Michalis

czw., 19 mar 2020 o 18:34 Don Brutzman <brutzman at nps.edu> napisał(a):
>
> Happy to forward (with permission) this recent email discussion regarding Blender 2.82a improvements supporting X3D.
>
> One followup reported Monday, the new Blender and also a new dev release for Meshlab have been tested satisfactorily using X3DJSAIL command-line invocation for producing X3D viewpoint capture images and simple STL import/export.
>
> * [x3d-public] consider renaming local variables in X3DJSAIL to support JSweet transpiler;
>    X3DJSAIL release tests many new libraries
>    http://web3d.org/pipermail/x3d-public_web3d.org/2020-March/011892.html
>
> There is a lot of work still to do with Blender, but turning this corner means that much more is now possible with X3D.
>
> It will be great to use x3d-public list for discussing conversion issues and Blender Maniphest efforts to ensure that the best possible support for X3D versions 3 and 4.
>
> Having fun with X3D Blender!  Meshlab too!   8)
>
>
> -------- Forwarded Message --------
> Subject: Re: Blender 2.8 X3D support??
> Date: Sun, 15 Mar 2020 08:07:35 -0700
> From: Don Brutzman <brutzman at nps.edu>
> Organization: Naval Postgraduate School (NPS)
> To: Michalis Kamburelis <michalis.kambi at gmail.com>, Nicholas Polys <npolys at vt.edu>
> CC: sebastian ullrich <sebastian.ullrich at sensegraphics.com>, Christophe MOUTON <christophe.mouton at edf.fr>
>
> Yes great to hear progress is again occurring!  8)
>
> 1. Nicholas and Michalis: *respectfully request permission* to push this thread to x3d-public in order to best encourage archival followups, increased usage and steady improvement.
>
> Similarly recommend we post to x3d-public for all subsequent Blender export/import discussions.
>
> ----
>
> 2. See past references at Web3d.org > PARTICIPATE > Projects Wish List, Item #5b
>
>         https://www.web3d.org/projects/wish-list
>
> Blender import/export (open-source C++)
> - announcement, https://www.web3d.org/news-story/improved-blender-import-x3d-scenes
> - email thread, http://web3d.org/pipermail/x3d-public_web3d.org/2015-June/003412.html
> - Blender task, https://developer.blender.org/T44758
>     (last post by Seva was 2015, now closed)
>
> There are multiple recent Maniphest Tasks, which is a great sign.
> ========================================
> Blender advanced search for "x3d" in Maniphest task:
> https://developer.blender.org/search/query/6BI4QE1m3Lm5/#R
>
> T71801: blender is geting error exporting x3d
>
> T66534: X3D export in 2.80 does not save texture
>
> T49799: X3D .wrl file import failure
>
> T71424: X3D VRML2 importer throws ZeroDivisionError when trying to import a certain KiCad file
>
> T68452: X3D export broken for meshes with modifiers
>
> T69115: Material missing on X3D export
>
> T51865: Add generic precision option for text-based formats exporters (e.g. X3D, OBJ...)
> ========================================
>
>
> 2. Attached is default Blender box which occurs when you create a new General model.
>
> X3D validator log is clean, only authoring warnings:
>
> --------- X3D Validator checks commenced for BlenderDefaultBox.x3d ---------
>
> Performing well-formed XML check...
> Checking file:/C:/installs/BlenderDefaultBox.x3d...
> Well-formed XML check: pass
>
> Performing DOCTYPE check...
> [X3dDoctypeChecker] success: valid XML declaration found.[X3dDoctypeChecker] success: final X3D 3.0 DOCTYPE found.
>
> Performing DTD validation...
> Checking file:/C:/installs/BlenderDefaultBox.x3d...
> XML DTD validation: pass
>
> Performing X3D schema validation...
> Checking file:/C:/installs/BlenderDefaultBox.x3d...
> XML schema validation: pass
>
> Performing X3D regular expression (regex) values check...
>
> Performing X3dToClassicVrml.xslt conversion check...
>
> Performing X3D Schematron check...
> <X3D profile='Immersive'> is defined, but nodes in scene have actual profile='Interactive' [/X3D, info]
> Missing X3D filename in meta tag, should appear as <meta name='title' content='FileName.x3d'/> [/X3D/head, warning]
> Correct url for X3D file should appear in <meta name='identifier' content='http://someAddress/somePath/FileName.x3d'/> [/X3D/head, warning]
> Missing name of X3D scene author in meta tag, add <meta name='creator' content='Author Name'/> [/X3D/head, info]
> Missing X3D scene description in meta tag, should appear as <meta name='description' content='topic sentence plus good summary'/> [/X3D/head, info]
> <Viewpoint DEF='CA_Camera'/> is missing description which is important for accessibility and usability.  Example: description='default view, rotate to examine object' [/X3D/Scene/Transform[3]/Viewpoint, warning]
>
> --------- X3D Validator checks complete for BlenderDefaultBox.x3d ---------
> --------- X3D Validator online at https://savage.nps.edu/X3dValidator ---------
> ====================================================
>
> Onward...
>
> On 3/12/2020 10:39 AM, Michalis Kamburelis wrote:
> > As for animations - I don't think so. I think this is the latest
> > version of the exporter in their GIT:
> > https://developer.blender.org/diffusion/BA/browse/master/io_scene_x3d/
> > . Exporter doesn't generate any interpolators or time sensors ever.
> >
> > BTW, I found two related bug reports:
> >
> > - This one https://developer.blender.org/T71801 describes the problems
> > I observed in earlier Blender versions too. I have no idea why they
> > seem fixed now --
> > https://developer.blender.org/diffusion/BA/browse/master/io_scene_x3d/
> > doesn't show any recent modifications. Well, but they are fixed :)
> > Looks like some modification elsewhere also fixed this. Or I'm just
> > lucky today :)
> >
> > - https://developer.blender.org/T66534 here somebody already reported
> > that exporting textures to X3D seems to be missing in Blender 2.8.
> >
> > Regards,
> > Michalis
> >
> > czw., 12 mar 2020 o 16:24 Nicholas Polys <npolys at vt.edu> napisał(a):
> >>
> >> Great news~!
> >>
> >> I will grab the latest one continue testing ...
> >> any indications about interpolators / keyframe animation ?
> >>
> >> br,
> >> _n
> >>
> >>
> >> On Thu, Mar 12, 2020 at 10:49 AM Michalis Kamburelis <michalis.kambi at gmail.com> wrote:
> >>>
> >>> I tested the Blender -> X3D exporter sometime in February, and it had
> >>> problems (errors occurred even when exporting the simplest scene with
> >>> a cube).
> >>>
> >>> That said... I'm happy to report that I just tested the latest version
> >>> of Blender (2.82a) and the export seems to work OK!
> >>>
> >>> At least camera, lights, geometry and colors (at least Material with
> >>> diffuseColor) are exported OK.
> >>>
> >>> I don't know how to configure textures yet (the way textures are
> >>> assigned to materials changed in Blender 2.8, and it looks like X3D
> >>> exporter looks at "Viewport Display" settings that don't allow to set
> >>> texture). But maybe it's available, I just don't know how yet.
> >>> (Documentation of the script in Blender 2.8 is unfortunately a TODO,
> >>> https://docs.blender.org/manual/en/latest/addons/import_export/scene_x3d.html
> >>> ).
> >>>
> >>> That's very good news for me, and I missed this exporter badly :)
> >>>
> >>> This also means we will be able to enhance the exporter to include X3D
> >>> v4 material features. The way materials are specified in Blender 2.8
> >>> is a nice match with the new material features in X3D v4 (textures
> >>> that are slots of each parameter, physical properties of materials
> >>> etc.)
> >>>
> >>> Regards,
> >>> Michalis
> >>>
> >>> czw., 12 mar 2020 o 15:08 Nicholas Polys <npolys at vt.edu> napisał(a):
> >>>>
> >>>> Hi all~!
> >>>>
> >>>> What is the latest status here?
> >>>> We had noted the bugs with their community
> >>>>   but I have not seen any news or update...
> >>>>
> >>>> br,
> >>>> -n
>
>
> all the best, Don
> --
> Don Brutzman  Naval Postgraduate School, Code USW/Br       brutzman at nps.edu
> Watkins 270,  MOVES Institute, Monterey CA 93943-5000 USA   +1.831.656.2149
> X3D graphics, virtual worlds, navy robotics http://faculty.nps.edu/brutzman
>
>
> all the best, Don
> --
> Don Brutzman  Naval Postgraduate School, Code USW/Br       brutzman at nps.edu
> Watkins 270,  MOVES Institute, Monterey CA 93943-5000 USA   +1.831.656.2149
> X3D graphics, virtual worlds, navy robotics http://faculty.nps.edu/brutzman