Not supported are things like animations etc.
This was updated some time ago, so no waranty that it works perfect.
For Wotlk (3.x).

http://www.file-upload.net/download-3159531/3dstom2.zip.html

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You can commit any winterthemed Areachange/Worldbuild. One entrie per user.

Deadline: 31. Dezember 2010

Winner Award: Implementation of a (little) worldbuilding tool of your idea.

Inspiration:
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In this tutorial I will show you how to add animated textures to a model.
Animated textures can eg be found on the clouds in character selection screen or is used for the floating "lava" effect on Goshujinsamas Dark Matter Blade.
Here I show, how I added the effect to the Dark Matter Blade (it's also the Test.m2 which is distributed with PyModelEditor)
I'm adding the effect via PyModelEditor, but this can be also done via hexediting

So first to the Interface of PyModelEditor:

The "Open File" Button is used to open a *.m2 file.
The Buttons where the big red arrow points to, are used to open the different editors.

So now we've opened the Dark Matter Blade in the Editor and the first thing we need, is to know, to which geoset we want to add the effect. Therefore we open the geoset editor and check which geoset is the blade.

-> Geoset Number 1 (the numeration of the geoset is 0,1,2...)

Now we need to add the Texture we want to animate on the blade to the model:

Hardcoded is used for textures that can't be changed via DBC or ingame via Cloth change.
(the x and y-wrap is used to make the animation fluent)


As we want the texture animation continual, and not for each animation a different one, we add a Global Sequence to the model



At this point, we implement how the texture animates:

We use the translation for the flow of the lava.
In the first comboBox is no entry, so we need to add an AnimSub.
As interpolation type we choose "Linear Interpolation".
The fourth comboBox is for the GlobalSequence.
The format of the AnimEditor is:
"Timestamp":"Value"


To define how the animated texture layer is blended on the primer, we add a new renderflag:




Now we have everything prepared, so we can add finally the texture layer:

You need to set the "animated flag", choose the correct submesh, texture, uv animation and renderflag.


So now you've got an animated texture in your model.

Things needed:
* PyM2: http://code.google.com/p/pym2/source/browse/
* A Python Interpreter: http://www.python.org/
* A texteditor (like Notepad++)

Notes to Python:
# starts a comment
indentations are used for block delimitations

To use PyM2 you need to include the files in your Python-Code:
from m2 import * # imports the whole m2.py file without the use of namespace
from skin import * #the same for skin
import m2 #imports m2.py, but you have to use eg m2.M2File to access the parts of the file

Now you can use the imported files.
Example 1: Displaying of the texture types
#! /usr/bin/python
from m2 import *

#Dictionary for Texture types
TextureTypes = { 0 : "Hardcoded" , 1 : "Body/Clothes" , 2 : "Items", 3 : "ArmorReflect?", 6 : "Hair/Beard",
8 : "Tauren fur", 9 : "Inventory Art 1", 10 : "quillboarpinata", 11 : "Skin for creatures or gameobjects 1",
12 : "Skin for creatures or gameobjects 2" ,13 : "Skin for creatures or gameobjects 3", 14 : "Inventory Art 2"}

#open m2
m2 = M2File("HumanMale.m2")
#iterate through textures
for i in m2.textures:
print "Type is " + TextureTypes[i.type] #print texture type
print i.name #print texture filename
Example 2: Change the Color of all particles to Green
from m2 import *
filename = "YourM2.m2"
m2 = M2File(filename ) #open YourM2.m2
#iterate through the particles
for i in m2.particle_emitters:
#iterate through the elements of the Color-FakeAnimationBlock
for j in i.color.Keys:
j.x = 0 #red
j.y = 255 #green
j.z = 0 # blue
m2.write(filename) #write the m2

Example 3: Display the Geoset Types
from skin import *

#Create Dictionary for Translating Ids
GeosetTypes = { "00" : "Hairstyles", "01" : "Facial1", "02" : "Facial2", "03" : "Facial3",
"04" : "Bracers", "05" : "Boots", "06" : "Unknown1", "07" : "Ears", "08" : "Wristbands", "09" : "Kneepads",
"10" : "Unknown2", "11" : "Pants", "12" : "Tabard", "13" : "Trousers/Kilt", "14" : "Unknown3",
"15" : "Cape", "16" : "Unknown4", "17" : "Eyeglows", "18" : "Belt" }

#Open SkinFile
sk = SkinFile("VrykulMale00.skin")
#Iterate through the Geosets
for i in sk.mesh:
s = str(i.mesh_id)#Convert the GeosetId to a string
j = len(s)#Get the Length of the string
if (j<3):#If it's only two digits...
s = "00"#the Id is 00
elif(j<4):#if it's length is <4, then it has only one digit
s =  "0" + s[0]
else:#get the two important digits
s =  s[0:2]
print str(i.mesh_id) +" is " + GeosetTypes[s]#print mesh_id and it's translation

Example 4: Tilting is Tilt
from m2 import *

print "Please insert Modelname:"
filename = raw_input() #get input
m2 = M2File(filename) #open m2
print "Insert Tilting ( 0 = no tilt, 1 = x-tilt, 2 = y-tilt, 3 = xy-tilt)"
tilt = int(raw_input()) #Get input and convert to int
m2.hdr.modeltype |= tilt  #non-exclusive or: 001010 | 010001 = 011011
m2.write(filename) #write m2