I think this is the only one Orbiter mesh plugin for modern Blender.
I haven't updated the plugin for a long time,but it should work with the latest Blender versions. Blender API is stable, and Blender developers usually don't change it.
Project Blender 2.63 + to Orbiter import/export addon
- Thread starter vlad32768
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I think this is the only one Orbiter mesh plugin for modern Blender.
I haven't updated the plugin for a long time,but it should work with the latest Blender versions. Blender API is stable, and Blender developers usually don't change it.
CFD .msh and Blender
Hello everybody, my name is Riccardo, an aerospace engineer working and studying on CFD (computational fluid dynamics) simulations and this is my first post on this forum (or better, the second one after the presentation post). I'm writing on an "old" thread, hoping not violating the terms, because this conversation seems really suitable for my question which is rather interesting and challenging, still regarding .msh files and their portability in blender. More specifically, the matter is the possibility of using this add-on also for importing .msh files coming from ANSYS Fluent software. Ther blender version I'm using is the 2.76 one. Do you think that would be possible?
Hello everybody, my name is Riccardo, an aerospace engineer working and studying on CFD (computational fluid dynamics) simulations and this is my first post on this forum (or better, the second one after the presentation post). I'm writing on an "old" thread, hoping not violating the terms, because this conversation seems really suitable for my question which is rather interesting and challenging, still regarding .msh files and their portability in blender. More specifically, the matter is the possibility of using this add-on also for importing .msh files coming from ANSYS Fluent software. Ther blender version I'm using is the 2.76 one. Do you think that would be possible?
Hi Riccardo,
Orbiter .msh files are just simple models for a computer game, representing only 2d surfaces made of triangles, and Fluent .msh is usually a 3d finite element mesh for CFD calculations. That's a different and more complex data.
My plugin can't do anything with Fluent .msh.
BTW what do you want to do with Blender and 3d FEM meshes?
Longjap
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Program Files > Blender Foundation > Blender > 2.** > scripts > addons
Matias Saibene
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Works this plugin in Blender 2.79?
francisdrake
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I played around with Blender recently. The io_orbiter_msh works with version 2.79.
Unfortunately not with the upcoming version 2.80! When trying to activate it, an error message is presented: "This script has not been updated to version 2.80. Ignoring."
This seem related to how the scripts are registered in Blender 2.80.
I don't know if Vlad is still around and could update his script, please?
The new Blender version 2.80 is a major improvement on the (somewhat cluttered) interface of Blender, much more friendly to use.
Unfortunately not with the upcoming version 2.80! When trying to activate it, an error message is presented: "This script has not been updated to version 2.80. Ignoring."
This seem related to how the scripts are registered in Blender 2.80.
I don't know if Vlad is still around and could update his script, please?
The new Blender version 2.80 is a major improvement on the (somewhat cluttered) interface of Blender, much more friendly to use.
I have the very same point here. I just started to finally get familiar with blender in this days and the new 2.80 is really a super step forward compared to the the 2.79. I tried to update the plugin myself but I don't know anything about python, so I tried with just the export part (personally I don't care much about importing, but just to get my models into orbiter). I got it to install, but no luck with showing up in the options and everything so I am still using 2.79 to export.
if vlad or anybody is up to the task it would be really a nice to have :thumbup:
Marijn
Active member
I've been doing some research on this recently. To me, it seems that the glTF format is being pushed as a new 'standard'.
Therefore, I think we need a glTF-to-Orbiter converter. Export to glTF is supported by Blender2.80 without plug-ins.
Therefore, I think we need a glTF-to-Orbiter converter. Export to glTF is supported by Blender2.80 without plug-ins.
llarian
Well-known member
Remember that Blender 2.8 is only a beta release at this point (Blender has a strange numbering system. There are enough changes in this version to make it 3.0 in any other application.). The API is being worked on but is not yet complete. Personally, I would wait for the general release of 2.8. That being said, I've been looking at what it takes to upgrade our addon since jayanam released his blender tutorials on the matter. Nothing concrete yet and I don't have Vlad's permission at this time.
edit: Oops. Make the Python API.
2nd edit: Link removed,
edit: Oops. Make the Python API.
2nd edit: Link removed,
Last edited:
francisdrake
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Thanks for trying! Sorry it does not work.
Changing the blender info verison in the script:
"blender": (2, 80, 0),
is unfortunately not enough.
Error message:
Attribute error: Module 'bpy.utils' has no attribute 'register_module'
When comparing it with other import/export scripts it looks like the registering process requires classes to be defined, which have register / unregister methods included.
The old method probably allowed this to done with simple functions.
So the challenge would be to structure the register / unregister in classes as it is done for the other import and export scripts.
Changing the blender info verison in the script:
"blender": (2, 80, 0),
is unfortunately not enough.
Error message:
Attribute error: Module 'bpy.utils' has no attribute 'register_module'
When comparing it with other import/export scripts it looks like the registering process requires classes to be defined, which have register / unregister methods included.
The old method probably allowed this to done with simple functions.
So the challenge would be to structure the register / unregister in classes as it is done for the other import and export scripts.
nope, it doesn't work. did you just update the version? because it is not enough. previously I went on and also updated the class registration, it installed fine but it didn't show up in my export menu.
I am wondering also if there is any compatibility issue between blender files versions. I think there is not actually... so one option could be to model and test render in 2.8 and then just export through 2.79.
francisdrake
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I did install both versions, 2.79 and 2.8.
Once a model is modified in 2.8, it reports an error when trying to open in 2.79.
"File written by a newer Blender binary (280.0). Expect loss of data."
My test file loaded then as empty, no geometrical information.
And - if the "Load UI" option is checked - also all menu bars are removed.
Once a model is modified in 2.8, it reports an error when trying to open in 2.79.
"File written by a newer Blender binary (280.0). Expect loss of data."
My test file loaded then as empty, no geometrical information.
And - if the "Load UI" option is checked - also all menu bars are removed.
Blake
Addon Developer
FYI, Blender script changes are documented here:
https://wiki.blender.org/wiki/Reference/Release_Notes/2.80/Python_API/Addons
How classes are registered and named is also changing. Scripts and blend files are not backward compatible.
As has been noted, this is Beta software and any changes made to scripts may or may not work in the next release. I'd stick with Blender 2.79 for serious Orbiter development until things are locked down a bit tighter with 2.80.
BTW, I do like the direction Blender is taking. It should soften the learning curve for many coming from other applications.
https://wiki.blender.org/wiki/Reference/Release_Notes/2.80/Python_API/Addons
How classes are registered and named is also changing. Scripts and blend files are not backward compatible.
As has been noted, this is Beta software and any changes made to scripts may or may not work in the next release. I'd stick with Blender 2.79 for serious Orbiter development until things are locked down a bit tighter with 2.80.
BTW, I do like the direction Blender is taking. It should soften the learning curve for many coming from other applications.
llarian
Well-known member
Thanks for the feedback ... and my apologies, guys. It was a late Saturday night thing while I was tinkering with a new Raspberry Pi, so I made the quick minimum change and then pulled a Microsoft and let the community do the testing. I abase myself.
I need it working too so I will continue working on the rest of it ... and then test it first. It would be better if Vlad came back to play as the original author always knows his software best. Please feel free to add in your own efforts, too.
I haven't tried it yet, but I think there is still the option of saving a Blender model as .obj and then using the obj to msh converter.
I need it working too so I will continue working on the rest of it ... and then test it first. It would be better if Vlad came back to play as the original author always knows his software best. Please feel free to add in your own efforts, too.
I haven't tried it yet, but I think there is still the option of saving a Blender model as .obj and then using the obj to msh converter.
llarian
Well-known member
While I've been researching the required changes to Vlad's Blender i/o addon, I noticed that Blender 2.8 can output 3ds flies. Has anyone tried this yet and then passed the output through the max to msh converter successfully?
4throck
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Yes, we need a new plugin, specially one with support for more advanced materials (D3D9).
The current one only outputs GSGL/Blender Render materials, not Cycles.
I have a lot of things going on right now, but eventually I might be able to help with some testing. PM if needed :hmm:
The current one only outputs GSGL/Blender Render materials, not Cycles.
I have a lot of things going on right now, but eventually I might be able to help with some testing. PM if needed :hmm:
It looks like Python API has changed in Blender 2.8.
Also the Blender render is replaced with Eevee, the script should export Eevee materials into a .msh file.
BTW, I didn't launch Orbiter for some years. Are there any improvements in Orbiter rendering engine that require some additional material data?
I will investigate the changes if I have free time.
WIP
Unfortunately, I haven't enough free time to update the module for 2.8.
But the work is slooowly getting done. Now I can import mesh geometry and UV data into Blender 2.8.
However, the old Blender renderer has gone in 2.8, so I have to learn how to work with new EEVEE node-based materials, and 2.8 PyAPI documentation isn't good yet.
AFAIK there are new advanced rendering plugins like d3d9Client.
Do they use cool material features like normal mapping, specular mapping etc? Maybe the plugin should handle features like that?
Unfortunately, I haven't enough free time to update the module for 2.8.
But the work is slooowly getting done. Now I can import mesh geometry and UV data into Blender 2.8.
However, the old Blender renderer has gone in 2.8, so I have to learn how to work with new EEVEE node-based materials, and 2.8 PyAPI documentation isn't good yet.
AFAIK there are new advanced rendering plugins like d3d9Client.
Do they use cool material features like normal mapping, specular mapping etc? Maybe the plugin should handle features like that?
