Need help with exporter script

Coding Python Support
#1

I desparately need some help, please.

I need an exporter for a free racing sim that will export animation info from Blender in a specific format.

Any help by one of the Python gurus will be forever appreciated, thank you.

I couldn’t attach a .txt file so here is the format needed.

*SKELETONINFO {
*VERTCOUNT 135
*INDEXCOUNT 798
*FRAMERATE 30
}
*BONE {
*BONENAME Bip01 Pelvis
*VERTEXWEIGHTS {
*MESHNAME Box02
*WEIGHT 0 0.565037
*WEIGHT 1 0.340933
*WEIGHT 2 0.281709
*WEIGHT 3 0.450166
*WEIGHT 4 0.381702
*WEIGHT 67 0.552552
*WEIGHT 68 0.332404
*WEIGHT 69 0.441996
*WEIGHT 70 0.279129
*WEIGHT 76 0.982807
*WEIGHT 84 1.0
*WEIGHT 88 0.283147
*WEIGHT 132 1.0
}
*PARENTNAME Bip01
*POSXYZ 0.405173 0.529669 -0.00982666
*ROXYZW -0.298676 -0.260401 0.705785 0.58724
*SCAXYZ 1.0 1.0 1.0
*LENGTH 0.00216875
*ANIMATION {
*ANITIME 0f
*ANIPOSXYZ 0.0 0.0 0.0
*ANIROXYZW 0.0 0.0 0.0 1.0
*ANISCAXYZ 1.0 1.0 1.0
*ANITIME 1f
*ANIPOSXYZ -0.00152341 0.0 -0.000235794
*ANIROXYZW 0.0 -0.000156247 0.0 1.0
*ANISCAXYZ 1.0 1.0 1.0
*ANITIME 2f
*ANIPOSXYZ -0.00303847 0.0 -0.00044855
*ANIROXYZW 0.0 -0.000499983 0.0 1.0
*ANISCAXYZ 1.0 1.0 1.0
*ANITIME 3f
*ANIPOSXYZ -0.0045588 0.0 -0.000663602
*ANIROXYZW 0.0 -0.000843736 0.0 1.0
*ANISCAXYZ 1.0 1.0 1.0
*ANITIME 4f
*ANIPOSXYZ -0.0060986 0.0 -0.000905535
*ANIROXYZW 0.0 -0.000999983 0.0 1.0
*ANISCAXYZ 1.0 1.0 1.0
}
}

#2

Give me a (short) .blend with such an animation (truncated to a minimum needed).
And a lot of questions remain:
A skeleton are the bones of … and what do you mean with, a bone has a head and a tail = your VERTCOUNT ???
*VERTCOUNT 135
*INDEXCOUNT 798

Meaning (at least for me) your description is not sufficient

#3

Thanks for the reply, PKHG.

I’m not sure exactly what the vertcount and indexcount are but will go back and review the info that I have and try to give a coherant explaination tomorrow night.

I’m having trouble posting info as the forum won’t let me post what I desire to say, bummer.

I’m a nu-be to this forum.

#4

After some time (and posts) you may upload images and use [ code ] and its counterpart …

#5

I’ll try an image that might help.


hey it worked. you can see that I’m using Blender 2.45. I think I got the vertcount right but not sure.

#6

PKHG,
Have I been fogotten. This thread is getting buried.

#7

somewhere between betacam and dinosaurs.

#8

Thanks for a reply batFINGER,
I’m trying to learn Python and having fits. Currently I have figured out how to get the first four items I need but can’t figure out how to get info about the armature’s. Stuff like bone name, etc.

Any help will be appreciated, thank you!

#9

you can use print(dir(armatureobject)) it will display the functions.

#10

Thank you Darknet. I’ll give it a try and probably be back whit more questions.

#11

Here is the code I’m using:

def write_obj(filepath):
out = file(filepath, ‘w’)
sce = bpy.data.scenes.active
ob = sce.objects.active
me = ob.getData(mesh=1)
mesh=ob.getData(mesh=1)
vlen1=len(me.verts)
print ‘verts’, vlen1
out.write(ob.type + ": " + ob.name + "
“)
out.write(”* SKELETONINFO {
")
out.write(tab + "* VERTCOUNT " + len(me.verts) + "
")

It gives a “Can’t concatanate ‘str’ and ‘int’ objects” error.

How do I get the vlen1 or len(me.verts) to write to the file. It writes to the Blender console with no problem.

Any info or help will be appreciated, thank you.

#12

Hello boomer541,
If you write in a text file, you need to convert all types to the string type.
Check this page :
http://docs.python.org/py3k/library/string.html#string-formatting

example:
out.write("An integer: {0}
A float: {1} ".format(12,0.2659)

#13

Thanks Stun,
None of the tutorials on i/o s c r i p t s told me that ALL objects have to be strings to write to a file. After I posted the problem I found a tutorial that had the Think Python Book and in the Files section that info was there. That was my problem and now is solved and I can go on.

I still need to figure out how to get the framerate and bone info from Blender for the animation exporter that I’m trying to make.

#14

I got the info to get the framerate value by using google!

Now perhaps I will have to use google to find out how to get the bone info or perhaps one of the Python experts on Blenderartists can help me with that problem.

#15

Are there any Python experts that can help me get the info I need to complete the exporter I’m trying to make?

#16

Sorry, it looks like you are using an OLD Blender …
Check if your ‘animation’ will run in Blender 2.57, if so, I know something about finding info about bones …

#17

Thanks for the reply PKHG!
Yes I still use ver. 2.45 as I don’t like the 2.5x GUI. The basics of extracting bone info from v.2.57 should be adaptable to 2.45 with a little tinkering with Python.

I got the bone name. Now I need to get the rest of the Bone info.
There is also a Bip01 that I need to get but don’t know what that is in the animated object.

Any, ANY help will be appreciated, thank you.

#18

Buried again.
Anyone willing to help make an exporter for 2.4x versions for those Blender users that don’t like the 2.5x version?

#19

Nobody don’t like Blender2.5x, but what are you found in the Blender/Python doc about Bones info?

#20

I finally found some code to get the Bip01 out of Blender and found code to get the vertices influenced by a bone weight info.
Then I’ll need code to get the parentname, scale and length info as I can get the frames and quaternions info.

Signed nobody, LOL