Project Blender 2.63 + to Orbiter import/export addon - Page 6 - Orbiter-Forum

**Hlynkacg** · 07-05-2011, 07:56 PM

Quote:

Originally Posted by vlad32768

Do you use meshc.exe? I think it should solve such problems.

Use what???

Quote:

Originally Posted by vlad32768

Selected objects list isn't sorted by name by default.

I fixed this. You can download the new version.
Please write if it works good or not.

Download link is on the first page correct?

I'll give it a shot when I get home this evening and get back to you.

Thanks again.

**Hielor** · 07-06-2011, 03:06 AM

Quote:

Originally Posted by vlad32768

Do you use meshc.exe? I think it should solve such problems.

Would it be possible for you to have the export script also spit out a header file with the necessary #defines? That's what I have the Wings exporter doing.

vlad32768 · 07-06-2011, 11:13 AM

Quote:

Originally Posted by Hlynkacg

Use what???

Meshc is a tool that creates a header file that maps the names of the meshes to their indices. You can include that header into your .dll.

Quote:

Originally Posted by Hielor

Would it be possible for you to have the export script also spit out a header file with the necessary #defines? That's what I have the Wings exporter doing.

That's a great idea, thanks!

XSSA · 07-30-2011, 03:27 AM

Where do I put this addon for Blender version 2.57? If there are different versions of this then post them all.

I meant were do the files (io_orbiter_msh.py and pax_global_header) go in the blender files.
I have a plugins file but it has no .py files in it
I can go in here C:\Program Files\Blender Foundation\Blender\2.57\python\lib
or
here
C:\Program Files\Blender Foundation\Blender\blender-2.57-windows32\2.57\plugins
or
here
C:\Program Files\Blender Foundation\Blender\blender-2.57-windows32\2.57\python\lib

**Hlynkacg** · 08-02-2011, 07:46 PM

Quote:

Originally Posted by XSSA

Where do I put this addon for Blender version 2.57? If there are different versions of this then post them all.

Open Blender and then go to "Plugins" in the file menu (It might also be under "preferances" depending on which build you have)

Click on "Install Plugin" and select the file.

From here on there should you should be able to edit Orbiter *.MSHs using Blender's Import/Export function.

derludl · 08-10-2011, 09:14 PM

Hello vlad32768,

first of all many thx for endowing us with your Blender 2.5 export addon, really appreciate your efforts!

Note number 7 in your python script

Code:

# 7. Some meshes (XR5 for example) have groups with missing UVs in some vertices. Usually this issue is fixed automatically,
#  but in some cases script could crash with "List index out of range" error. Please report if it happens!

encouraged me to bother you with some troubles I have exporting my models after having added UV maps to them.

I verified my troubles with the most simple setup - by UV unwrapping the cube that is shown when Blender starts. As soon as I add a UV map, exporting the mesh will throw the following error message:

Code:

line 627 in export_msh
  uvs=me.uv_textures[0].data[n].uv_raw[(2*i):(2*i+2)]
IndexError: byp_prop_collection[index]: index 0 out of range, size 0

(unfortunately I could not find out how to attach a screenshot via making a new album ... maybe because this is my first post, and I am not allowed to open a new album before I got approved to post?)

I'm currently using Blender 2.68.1 r38019, 64bit version on Windows7, and your latest export script from http://gitorious.org/blender-orbiter...tarball/master

It should be easy to reproduce the issue by
- starting Blender
- going to edit mode, Unwrap the cube
- try to export the mesh ==> error thrown

Is there something wrong on my end, or some incompatibility between my Version of Blender and your script? Any idea how I could support debugging this issue?

Regards, Ludl

PS: btw, do you know this Blender 2.49->Orbiter.msh export script?: http://sourceforge.net/projects/blorbiter/
That script is nicely written, with plenty of comments, and has some nice features you might want to include in your export module as well, e.g. automatically generating *.dds files by writing and converting a *.bmp directly from python. Neat ;-)

derludl · 08-15-2011, 09:16 PM

Started to debug my problems, installed Winpdb to have a closer look what's going on - many things to learn about internal blender data structures ...

What I realized today is that the simple test case I described in my previous post is indeed throwing an error - but actually an other one than what I get when trying to export my own model.

Looks like the export script dislikes being in "Edit Mode" (instead of "Object Mode") when trying to export the UV unwrapped blender cube. Means:

- starting Blender
- going to "Edit Mode", Unwrap the cube
- remain in "Edit Mode" and try to export the mesh ==> will throw an error

while on the other hand:

- starting Blender
- going to "Edit Mode", Unwrap the cube
- switch back to "Object Mode" and try to export the mesh ==> no error!

As soon as I have learned more about Blender's API, I might better understand what's going wrong here. Meanwhile I just can recommend that whoever stumbles across above error should check if he's trying to export while being in "Edit Mode".

Me, for now, will try to look more into the details of the error thrown when trying to export my own model - which happens around line 679

Code:

if has_uv:
file.write(" {} {}".format(v[2][0],1-v[2][1]))

More to come, I hope ...

vlad32768 · 08-19-2011, 07:34 PM

Ludl, thanks for your posts! Sorry for late answer, I was on vacation.

Quote:

PS: btw, do you know this Blender 2.49->Orbiter.msh export script?:

I know that this script exists, but I didn't look at its code. Blender 2.4 has different API, and I decided not to learn Blender 2.4 API and to write my addon from scratch.
Also, I wanted to learn something about Python and Blender 2.5 API; that's why I wrote the addon.

About .dds converting. AFAIK Blorbiter uses an external utility to convert textures to .dds. I write my addon on a Linux workstation, and I don't know any cross-platform utility that can convert files to .dds. So this feature is not implemented, but it's easy to add it.

Quote:

Originally Posted by derludl

Looks like the export script dislikes being in "Edit Mode" (instead of "Object Mode") when trying to export the UV unwrapped blender cube. Means:

- starting Blender
- going to "Edit Mode", Unwrap the cube
- remain in "Edit Mode" and try to export the mesh ==> will throw an error

while on the other hand:

- starting Blender
- going to "Edit Mode", Unwrap the cube
- switch back to "Object Mode" and try to export the mesh ==> no error!

That's interesting! Didn't try to export while in Edit mode yet. Maybe some internal Blender structures are out of sync with Python API wrappers while Blender is in Edit mode.
When I have time I'll test the script with the latest Blender revision (already 2.59

), reproduce this bug and try to fix it. I think the easiest way is to force Blender to go to the Object mode when necessary.

derludl · 08-19-2011, 08:11 PM

Hello Vlad, thx for your reply, hope you had nice vacations ... ^^

Meanwhile I found out what was the problem when trying to export my model. As one could have expected, there were some issues in the model. There existed several orphaned vertices, some of them easily removed by Blenders "Remove Double" function (forget to do that after spin-duplicating), but after that done, still several hard-to-find vertices remained. Finally I found out that one can find and get them easily selected by commanding

Code:

bpy.ops.mesh.select_by_number_vertices(type='OTHER')

in Blenders Python console (one needs to be in Edit mode for this, I assume). After that done, no more error from your script!

Looking into the details of your script, I understand that the orphaned vertices are added to the vertex list, but as they are not enlisted in any face, your script fails when trying to add an UV index vector to them. Maybe one could just skip such orphaned vertices? For sure one could improve the error message, I assume ;-)

Regarding *.dds export: you are correct, blorbiter script utilizes "DxTex.exe", a Windows executable. If I should come across a linux *.dds converter I'll let you know ^^ (though chances should be small, especially if targeting for an all-platform solution).

Thx again for your export script! Ludl

PS: Blender2.59 - I need to upgrade ^^

vlad32768 · 08-24-2011, 06:09 PM

Some changes:
-- Another fix due to API change. Addon now works with Blender 2.59.
-- Fixed that bug with exporting in Edit mode.
--Added "Delete orphan vertices" feature that helps to avoid "List index out of range" error when there are such vertices in selected meshes. Thanks Ludl for bug investigation!

derludl · 08-27-2011, 10:11 PM

Hi Vlad,

many thanks for continuing your work on exporting mesh files from Blender.

I've tested your latest version with Blender 2.59 on two of my old models (with orphaned vertices in), and your new option to remove those works like a charm!

Best regards, Ludl

vlad32768 · 05-01-2012, 10:20 PM

Blender 2.63 is released! The long-anticipated Bmesh is finally here!

I updated the script, it should work with blender 2.63 and later. Now you can use NGons in your models. Download and enjoy!

I tested the script with a very little model with some NGons. Try it with your advanced models and report bugs.

N_Molson · 05-01-2012, 11:36 PM

How did I miss that thread ?

Now that's a really good reason to use Blender instead of Anim8tor...

Excellent work there !

**Hlynkacg** · 05-02-2012, 12:11 AM

Havn't found any issues yet.

Thanks again Vlad. Congrats on a job well done.

**Hielor** · 05-02-2012, 01:09 AM

Quote:

Originally Posted by vlad32768

Blender 2.63 is released! The long-anticipated Bmesh is finally here!

I updated the script, it should work with blender 2.63 and later. Now you can use NGons in your models. Download and enjoy!

I tested the script with a very little model with some NGons. Try it with your advanced models and report bugs.

I assume you just triangulate the NGons when exporting to .msh?

07-30-2011, 03:27 AM	#79
XSSA Orbinaut	Where do I put this addon for Blender version 2.57? If there are different versions of this then post them all. I meant were do the files (io_orbiter_msh.py and pax_global_header) go in the blender files. I have a plugins file but it has no .py files in it I can go in here C:\Program Files\Blender Foundation\Blender\2.57\python\lib or here C:\Program Files\Blender Foundation\Blender\blender-2.57-windows32\2.57\plugins or here C:\Program Files\Blender Foundation\Blender\blender-2.57-windows32\2.57\python\lib Last edited by XSSA; 08-09-2011 at 10:37 PM.

08-10-2011, 09:14 PM	#81
derludl Orbinaut	Export troubles when adding UV maps Hello vlad32768, first of all many thx for endowing us with your Blender 2.5 export addon, really appreciate your efforts! Note number 7 in your python script Code: # 7. Some meshes (XR5 for example) have groups with missing UVs in some vertices. Usually this issue is fixed automatically, # but in some cases script could crash with "List index out of range" error. Please report if it happens! encouraged me to bother you with some troubles I have exporting my models after having added UV maps to them. I verified my troubles with the most simple setup - by UV unwrapping the cube that is shown when Blender starts. As soon as I add a UV map, exporting the mesh will throw the following error message: Code: line 627 in export_msh uvs=me.uv_textures[0].data[n].uv_raw[(2i):(2i+2)] IndexError: byp_prop_collection[index]: index 0 out of range, size 0 (unfortunately I could not find out how to attach a screenshot via making a new album ... maybe because this is my first post, and I am not allowed to open a new album before I got approved to post?) I'm currently using Blender 2.68.1 r38019, 64bit version on Windows7, and your latest export script from http://gitorious.org/blender-orbiter...tarball/master It should be easy to reproduce the issue by - starting Blender - going to edit mode, Unwrap the cube - try to export the mesh ==> error thrown Is there something wrong on my end, or some incompatibility between my Version of Blender and your script? Any idea how I could support debugging this issue? Regards, Ludl PS: btw, do you know this Blender 2.49->Orbiter.msh export script?: http://sourceforge.net/projects/blorbiter/ That script is nicely written, with plenty of comments, and has some nice features you might want to include in your export module as well, e.g. automatically generating .dds files by writing and converting a .bmp directly from python. Neat ;-)

08-15-2011, 09:16 PM	#82
derludl Orbinaut	Export troubles when adding UV maps - Update Started to debug my problems, installed Winpdb to have a closer look what's going on - many things to learn about internal blender data structures ... What I realized today is that the simple test case I described in my previous post is indeed throwing an error - but actually an other one than what I get when trying to export my own model. Looks like the export script dislikes being in "Edit Mode" (instead of "Object Mode") when trying to export the UV unwrapped blender cube. Means: - starting Blender - going to "Edit Mode", Unwrap the cube - remain in "Edit Mode" and try to export the mesh ==> will throw an error while on the other hand: - starting Blender - going to "Edit Mode", Unwrap the cube - switch back to "Object Mode" and try to export the mesh ==> no error! As soon as I have learned more about Blender's API, I might better understand what's going wrong here. Meanwhile I just can recommend that whoever stumbles across above error should check if he's trying to export while being in "Edit Mode". Me, for now, will try to look more into the details of the error thrown when trying to export my own model - which happens around line 679 Code: if has_uv: file.write(" {} {}".format(v[2][0],1-v[2][1])) More to come, I hope ...

08-19-2011, 07:34 PM	#83
vlad32768 Orbinaut	Ludl, thanks for your posts! Sorry for late answer, I was on vacation. Quote: PS: btw, do you know this Blender 2.49->Orbiter.msh export script?: I know that this script exists, but I didn't look at its code. Blender 2.4 has different API, and I decided not to learn Blender 2.4 API and to write my addon from scratch. Also, I wanted to learn something about Python and Blender 2.5 API; that's why I wrote the addon. About .dds converting. AFAIK Blorbiter uses an external utility to convert textures to .dds. I write my addon on a Linux workstation, and I don't know any cross-platform utility that can convert files to .dds. So this feature is not implemented, but it's easy to add it. Quote: Originally Posted by derludl Looks like the export script dislikes being in "Edit Mode" (instead of "Object Mode") when trying to export the UV unwrapped blender cube. Means: - starting Blender - going to "Edit Mode", Unwrap the cube - remain in "Edit Mode" and try to export the mesh ==> will throw an error while on the other hand: - starting Blender - going to "Edit Mode", Unwrap the cube - switch back to "Object Mode" and try to export the mesh ==> no error! That's interesting! Didn't try to export while in Edit mode yet. Maybe some internal Blender structures are out of sync with Python API wrappers while Blender is in Edit mode. When I have time I'll test the script with the latest Blender revision (already 2.59), reproduce this bug and try to fix it. I think the easiest way is to force Blender to go to the Object mode when necessary.

08-19-2011, 08:11 PM	#84
derludl Orbinaut	Export troubles when adding UV maps - Update2 Hello Vlad, thx for your reply, hope you had nice vacations ... ^^ Meanwhile I found out what was the problem when trying to export my model. As one could have expected, there were some issues in the model. There existed several orphaned vertices, some of them easily removed by Blenders "Remove Double" function (forget to do that after spin-duplicating), but after that done, still several hard-to-find vertices remained. Finally I found out that one can find and get them easily selected by commanding Code: bpy.ops.mesh.select_by_number_vertices(type='OTHER') in Blenders Python console (one needs to be in Edit mode for this, I assume). After that done, no more error from your script! Looking into the details of your script, I understand that the orphaned vertices are added to the vertex list, but as they are not enlisted in any face, your script fails when trying to add an UV index vector to them. Maybe one could just skip such orphaned vertices? For sure one could improve the error message, I assume ;-) Regarding .dds export: you are correct, blorbiter script utilizes "DxTex.exe", a Windows executable. If I should come across a linux .dds converter I'll let you know ^^ (though chances should be small, especially if targeting for an all-platform solution). Thx again for your export script! Ludl PS: Blender2.59 - I need to upgrade ^^

07-05-2011, 07:56 PM	#76
Hlynkacg Aspiring rocket scientist	Quote: Originally Posted by vlad32768 Do you use meshc.exe? I think it should solve such problems. Use what??? Quote: Originally Posted by vlad32768 Selected objects list isn't sorted by name by default. I fixed this. You can download the new version. Please write if it works good or not. Download link is on the first page correct? I'll give it a shot when I get home this evening and get back to you. Thanks again.

07-06-2011, 03:06 AM	#77
Hielor Defender of Truth	Quote: Originally Posted by vlad32768 Do you use meshc.exe? I think it should solve such problems. Would it be possible for you to have the export script also spit out a header file with the necessary #defines? That's what I have the Wings exporter doing.

07-06-2011, 11:13 AM	#78
vlad32768 Orbinaut	Quote: Originally Posted by Hlynkacg Use what??? Meshc is a tool that creates a header file that maps the names of the meshes to their indices. You can include that header into your .dll. Quote: Originally Posted by Hielor Would it be possible for you to have the export script also spit out a header file with the necessary #defines? That's what I have the Wings exporter doing. That's a great idea, thanks!

08-02-2011, 07:46 PM	#80
Hlynkacg Aspiring rocket scientist	Quote: Originally Posted by XSSA Where do I put this addon for Blender version 2.57? If there are different versions of this then post them all. Open Blender and then go to "Plugins" in the file menu (It might also be under "preferances" depending on which build you have) Click on "Install Plugin" and select the file. From here on there should you should be able to edit Orbiter *.MSHs using Blender's Import/Export function.

08-24-2011, 06:09 PM	#85
vlad32768 Orbinaut	Some changes: -- Another fix due to API change. Addon now works with Blender 2.59. -- Fixed that bug with exporting in Edit mode. --Added "Delete orphan vertices" feature that helps to avoid "List index out of range" error when there are such vertices in selected meshes. Thanks Ludl for bug investigation! Last edited by vlad32768; 08-24-2011 at 07:52 PM.

08-27-2011, 10:11 PM	#86
derludl Orbinaut	Hi Vlad, many thanks for continuing your work on exporting mesh files from Blender. I've tested your latest version with Blender 2.59 on two of my old models (with orphaned vertices in), and your new option to remove those works like a charm! Best regards, Ludl

05-01-2012, 10:20 PM	#87
vlad32768 Orbinaut	Blender 2.63 is released! The long-anticipated Bmesh is finally here! I updated the script, it should work with blender 2.63 and later. Now you can use NGons in your models. Download and enjoy! I tested the script with a very little model with some NGons. Try it with your advanced models and report bugs. Last edited by vlad32768; 05-01-2012 at 10:26 PM.

05-01-2012, 11:36 PM	#88
N_Molson Addon Developer	How did I miss that thread ? Now that's a really good reason to use Blender instead of Anim8tor... Excellent work there !

05-02-2012, 12:11 AM	#89
Hlynkacg Aspiring rocket scientist	Havn't found any issues yet. Thanks again Vlad. Congrats on a job well done.

05-02-2012, 01:09 AM	#90
Hielor Defender of Truth	Quote: Originally Posted by vlad32768 Blender 2.63 is released! The long-anticipated Bmesh is finally here! I updated the script, it should work with blender 2.63 and later. Now you can use NGons in your models. Download and enjoy! I tested the script with a very little model with some NGons. Try it with your advanced models and report bugs. I assume you just triangulate the NGons when exporting to .msh?

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