Blender Model import/export scripts

**MaximB** · 06-30-2010, 04:43 AM

Hello theli !

I love that you made an export/import for Blender
Blender is a great program that sometimes underrated due to being free and FOSS.
I used to play with it a few years ago, and I bought the 2.5 Blender video course.

Many people already moved from 2.49 to 2.5 Alpha2 it's time to update your script.
When the Blender 2.5/2.6 exporter/importer will be ready ?

**[E]theli** · 06-30-2010, 07:12 AM

Originally Posted by MaximB

When the Blender 2.5/2.6 exporter/importer will be ready ?

http://forums.heroesofnewerth.com/sh...&postcount=161

**PappaRajRaj** · 07-08-2010, 08:50 AM

I really can't understand how to import the files...

I want to import Zephyr into Blender.

I got the right Python version and i got the k2 / hon import. Then i choose "high.model" as Mesh and i've tried a lot of diffrent things in the animation - not choosing anything, choosing the mesh it self, choosing stuff in animation1 etc etc.

What should i choose to import? :< I've read the whole thread but to no avail.

What i wanna do is that i want an animation of a Yellow Ward in high res with it's eye looking around like it does ingame, with a transparent background, any help to do this would be extremly appriciated.

Would love to learn it my self but if someone wanna do it for me i'd be happy as well!

**PappaRajRaj** · 07-08-2010, 09:17 AM

This is what im looking to create, but with an animated and correct model of course

http://gyazo.com/29a5959b3ab45c56adbcc75c63113888.png

Annoying that each tutorial starts with me having successfully imported the model, but i can't seem to get it to work...

**[E]theli** · 07-08-2010, 10:07 AM

here is an eye blend file http://dl.dropbox.com/u/4443078/temp/eye.blend
here is an example render (1.7Mb)

**PappaRajRaj** · 07-08-2010, 11:55 AM

Originally Posted by theli

here is an eye blend file http://dl.dropbox.com/u/4443078/temp/eye.blend
here is an example render (1.7Mb)

Thank you so much :-) now let's see if i can add the glow... any pointers on how to do that? :-)

**chrrox** · 07-12-2010, 11:21 PM

Can you explain how the weighting works please.
I am trying to create a max script and i have everything working fine except for weighting.
I tried to read the python code but i am not used to it.
Just a simple structure like meshid boneid numweights weights or something like that is all i need.

**[E]theli** · 07-13-2010, 12:36 AM

Originally Posted by chrrox

Can you explain how the weighting works please.
I am trying to create a max script and i have everything working fine except for weighting.
I tried to read the python code but i am not used to it.
Just a simple structure like meshid boneid numweights weights or something like that is all i need.

hey, python is the best thing ever :P

Code:

u32 mesh index
u32 vertices count
  for each vertex:
      u32 weights count
            weightcount floats - weights
            weightcount u32 - indexes (index of bone)

**chrrox** · 07-13-2010, 05:36 PM

Thanks that worked perfect.
can you explain the bone parent id's like that i think i am close with them.
here is my max script.

Code:

if (heapSize < 20000000) then
    heapSize = 200000000 -- allow ~ 40 MB instead of just 7.5 MB. Prevents "Runtime Error: Out of scripter memory"

fname = getOpenFileName \ 
caption:"Open Heroes of Newerth Model File" \
types:"Heroes of Newerth Model File(*.model)|*.model" \
historyCategory:"Heroes of NewerthObjectPresets"
f = fopen fname "rb"

fn ReadFixedString bstream fixedLen =
(
    local str = ""
    for i = 1 to fixedLen do
    (
        str += bit.intAsChar (ReadByte bstream #unsigned)
    )
    str
)

SMDLhead = ReadFixedString f 8
unk01 = readlong f
version = readlong f
num_meshes = readlong f
num_sprites = readlong f
num_surfs = readlong f
BoneCount = readlong f
fseek f 0x18#seek_cur
bone1 = ReadFixedString f 4
bonesize = readlong f

BNArr = #()
for i = 1 to BoneCount Do (
BoneParentID = readlong f
BoneParentID = (BoneParentID + 1)
m11 = readfloat f; m12 = readfloat f; m13 = readfloat f
m21 = readfloat f; m22 = readfloat f; m23 = readfloat f
m31 = readfloat f; m32 = readfloat f; m33 = readfloat f
m41 = readfloat f; m42 = readfloat f; m43 = readfloat f
tfm = matrix3 [m11,m12,m13] [m21,m22,m23] [m31,m32,m33] [m41,m42,m43]
tfm = inverse tfm
m11 = readfloat f; m12 = readfloat f; m13 = readfloat f
m21 = readfloat f; m22 = readfloat f; m23 = readfloat f
m31 = readfloat f; m32 = readfloat f; m33 = readfloat f
m41 = readfloat f; m42 = readfloat f; m43 = readfloat f
tfm2 = matrix3 [m11,m12,m13] [m21,m22,m23] [m31,m32,m33] [m41,m42,m43]
bnamesize = readbyte f#unsigned
BoneName = readstring f    

    newBone = bonesys.createbone    \
                  tfm.row4    \
                  (tfm.row4 + 0.01 * (normalize tfm.row1)) \
                  (normalize tfm.row3)
            newBone.name   = BoneName
            newBone.width  = 0.3
            newBone.height = 0.3
            newBone.wirecolor = yellow
            newbone.showlinks = true
            newBone.setBoneEnable false 0
            newBone.pos.controller      = TCB_position ()
            newBone.rotation.controller = TCB_rotation ()

append BNArr newBone
 if i != 1 then
 newBone.parent = BNArr[BoneParentID]
)



--fseek f bonesize#seek_cur -- skip bones
mesh1 = ReadFixedString f 4
unk07 = readlong f
unk08 = readlong f
unk09 = readlong f
VertexCount = readlong f
fseek f 0x1C#seek_cur
nsize1 = readbyte f#unsigned
nsize2 = readbyte f#unsigned
nname1 = readstring f
nname2 = readstring f

Vert_array = #()
Normal_array = #()
UV_array = #()
Face_array = #()

vrts = ReadFixedString f 4
vrts_size = readlong f
null = readlong f
for a = 1 to VertexCount Do (
vx = readfloat f     --read xyz coordinates
vy = readfloat f 
vz = readfloat f
append Vert_array [vx,vy,vz] --save verts to Vert_array    
)
lnk1 = ReadFixedString f 4
lnk1_size = readlong f
null1 = readlong f
weightc1 = readlong f
struct weight_data
(
    boneids,weights
)
Weight_array = #()
used_id_array = #()
for a = 1 to weightc1 Do (
w = (weight_data boneids:#() weights:#())
maxweight = 0
WeightCount = readlong f

if WeightCount == 1 do (
weight1 = readfloat f
weight2 = 0
weight3 = 0
weight4 = 0
weight5 = 0
weight6 = 0
weight7 = 0
bone1 = readlong f
)
if WeightCount == 2 do (
weight1 = readfloat f
weight2 = readfloat f
weight3 = 0
weight4 = 0
weight5 = 0
weight6 = 0
weight7 = 0
bone1 = readlong f
bone2 = readlong f
)
if WeightCount == 3 do (
weight1 = readfloat f
weight2 = readfloat f
weight3 = readfloat f
weight4 = 0
weight5 = 0
weight6 = 0
weight7 = 0
bone1 = readlong f
bone2 = readlong f
bone3 = readlong f
)
if WeightCount == 4 do (
weight1 = readfloat f
weight2 = readfloat f
weight3 = readfloat f
weight4 = readfloat f
weight5 = 0
weight6 = 0
weight7 = 0
bone1 = readlong f
bone2 = readlong f
bone3 = readlong f
bone4 = readlong f
)
if WeightCount == 5 do (
weight1 = readfloat f
weight2 = readfloat f
weight3 = readfloat f
weight4 = readfloat f
weight5 = readfloat f
weight6 = 0
weight7 = 0
bone1 = readlong f
bone2 = readlong f
bone3 = readlong f
bone4 = readlong f
bone5 = readlong f
)
if WeightCount == 6 do (
weight1 = readfloat f
weight2 = readfloat f
weight3 = readfloat f
weight4 = readfloat f
weight5 = readfloat f
weight6 = readfloat f
weight7 = 0
bone1 = readlong f
bone2 = readlong f
bone3 = readlong f
bone4 = readlong f
bone5 = readlong f
bone6 = readlong f
)
if WeightCount == 7 do (
weight1 = readfloat f
weight2 = readfloat f
weight3 = readfloat f
weight4 = readfloat f
weight5 = readfloat f
weight6 = readfloat f
weight7 = readfloat f
bone1 = readlong f
bone2 = readlong f
bone3 = readlong f
bone4 = readlong f
bone5 = readlong f
bone6 = readlong f
bone7 = readlong f
)
if(weight1 != 0) then
    maxweight = maxweight + weight1
if(weight2 != 0) then
    maxweight = maxweight + weight2
if(weight3 != 0) then
    maxweight = maxweight + weight3
if(weight4 != 0) then
    maxweight = maxweight + weight4
if(weight5 != 0) then
    maxweight = maxweight + weight5
if(weight6 != 0) then
    maxweight = maxweight + weight6
if(weight7 != 0) then
    maxweight = maxweight + weight7
if(maxweight != 0) then
    (
        if(weight1 != 0) then
        (
            w1 = weight1 as float
            append w.boneids (bone1+1) --BoneID_array[bone1+1])
            append w.weights (w1 / 100.0)
            append used_id_array (bone1+1)
        )
        if(weight2 != 0) then
        (
            w2 = weight2 as float
            append w.boneids (bone2+1) --(BoneID_array[bone2+1])
            append w.weights (w2 / 100.0)
            append used_id_array (bone2+1)
        )
        if(weight3 != 0) then
        (
            w3 = weight3 as float
            append w.boneids (bone3+1)--(BoneID_array[bone3+1])
            append w.weights (w3 / 100.0)
            append used_id_array (bone3+1)
        )
        if(weight4 != 0) then
        (
            w4 = weight4 as float
            append w.boneids (bone4+1)--(BoneID_array[bone4+1])
            append w.weights (w4 / 100.0)
            append used_id_array (bone4+1)
        )    
        if(weight5 != 0) then
        (
            w5 = weight5 as float
            append w.boneids (bone5+1)--(BoneID_array[bone4+1])
            append w.weights (w5 / 100.0)
            append used_id_array (bone5+1)
        )        
        if(weight6 != 0) then
        (
            w6 = weight6 as float
            append w.boneids (bone6+1)--(BoneID_array[bone6+1])
            append w.weights (w6 / 100.0)
            append used_id_array (bone6+1)
        )            
                if(weight7 != 0) then
        (
            w7 = weight7 as float
            append w.boneids (bone7+1)--(BoneID_array[bone6+1])
            append w.weights (w7 / 100.0)
            append used_id_array (bone7+1)
        )        
    )
    append Weight_array w
    
    
)


--fseek f lnk1_size#seek_cur
face = ReadFixedString f 4
face_size = readlong f
null = readlong f
face_count = readlong f
facesize2 = readbyte f#unsigned
for a = 1 to face_count Do (
f1 = (readshort f) + 1   --read face indices, games are start form 0, but Max start from 1
f2 = (readshort f) + 1   --so we add 1 to each index
f3 = (readshort f) + 1
append Face_array [f1,f2,f3] --save faces to Face_array    
)
texc = ReadFixedString f 4
texc_size = readlong f
null = readlong f
null = readlong f
for a = 1 to VertexCount Do (
tu = readfloat f     --read UV float value
tv = (readfloat f) * -1 
append UV_array [tu,tv,0]  --save UVs to UV_array        
)

tang = ReadFixedString f 4
tang_size = readlong f
fseek f tang_size#seek_cur

sign = ReadFixedString f 4
sign_size = readlong f
if sign == "nrml" do (
null = readlong f
for a = 1 to VertexCount Do (
nx = readfloat f     --read xyz coordinates
ny = readfloat f 
nz = readfloat f
append Normal_array [nx,ny,nz] --save verts to Vert_array    
)
)
if sign == "sign" do (
fseek f sign_size#seek_cur
)
total_size = getFileSize fname
if total_size != (ftell f) do (
nrml = ReadFixedString f 4
nrml_size = readlong f
null = readlong f
for a = 1 to VertexCount Do (
nx = readfloat f     --read xyz coordinates
ny = readfloat f 
nz = readfloat f
append Normal_array [nx,ny,nz] --save verts to Vert_array    
)    
)
msh = mesh vertices:Vert_array faces:Face_array   --build mesh
msh.numTVerts = UV_array.count
buildTVFaces msh
for j = 1 to UV_array.count do setTVert msh j UV_array[j]
for j = 1 to Face_array.count do setTVFace msh j Face_array[j]
for j = 1 to Normal_array.count do setNormal msh j Normal_array[j]
    
max modify mode
select msh
skinMod = skin ()
addModifier msh skinMod
for i = 1 to BNArr.count do
(
    maxbone = getnodebyname BNArr[i].name
    if i != BNArr.count then
        skinOps.addBone skinMod maxbone 0
    else
        skinOps.addBone skinMod maxbone 1
    
)

modPanel.setCurrentObject skinMod

for i = 1 to Weight_array.count do
(
    w = Weight_array[i]
    bi = #() --bone index array
    wv = #() --weight value array
    
    for j = 1 to w.boneids.count do
    (
        boneid = w.boneids[j]
        weight = w.weights[j]
        append bi boneid
        append wv weight
    )    
    
    skinOps.ReplaceVertexWeights skinMod i bi wv
    
)
for i = 1 to BNArr.count do (
    j = i + 1
    if i == j do (
    if used_id_array[i] != used_id_array[j] do (
    
skinOps.removebone skinMod used_id_array[i]
    )
)
)

max create mode


fclose f

**[E]theli** · 07-14-2010, 12:13 AM

Originally Posted by chrrox

Thanks that worked perfect.
can you explain the bone parent id's like that i think i am close with them.
here is my max script.

huh?

**chrrox** · 07-14-2010, 05:38 AM

Are the bones split into sections?
When i import the bones i get this.This does not look like normal bone parenting to me.
I am taking the id and adding 1 to it and this is what i get.
Here is what i get with chronos.

**[E]theli** · 07-14-2010, 05:48 AM

why are you adding 1 ?
this is the correct bone parenting tree

Bip01 Spine is folded but you get the idea

**[E]theli** · 07-14-2010, 09:39 AM

[2010.06.14]
updated scripts, import script now supports animation clips from Savage 1 (silverback engine)

**XIII** · 07-19-2010, 01:14 PM

Hey theli, great job on your script so far! I've been using it for months now and it is just awesome, I love it.

I'm not sure if you know this already or have any plans on fixing it, but when I export a clip using your script, it is approximately 3 times larger than a clip exported using the S2 exporter.
When I tried opening and comparing two animation clips (Max and Blender exports), I noticed that your clips have more repeating data.
Anyway, this isn't anything big but I think it would make your script one step closer to perfection if fixed.

**[E]theli** · 07-20-2010, 05:30 AM

Originally Posted by XIII

Hey theli, great job on your script so far! I've been using it for months now and it is just awesome, I love it.

I'm not sure if you know this already or have any plans on fixing it, but when I export a clip using your script, it is approximately 3 times larger than a clip exported using the S2 exporter.
When I tried opening and comparing two animation clips (Max and Blender exports), I noticed that your clips have more repeating data.
Anyway, this isn't anything big but I think it would make your script one step closer to perfection if fixed.

hm, i'm pretty sure i had implemented motion key compression in exporter .. however it was absent ...
anyway .. i reimplemented that and also added new setting to export script - how much digits to leave for motion keys after decimal point when rounding (bigger - more precise, smaller - smaller filesize) ... setting it to 4 (default) you will end with file a bit bigger then original, with 3 you will get file a bit smaller then original

**XIII** · 07-22-2010, 06:33 AM

Thanks for the update! I just tried it with the default settings and it worked real nice.

**K4spi** · 10-09-2010, 08:20 AM

Any news about porting this to blender 2.5? I would be very thankful for it, since 2.5 is the only version I'm familiar with. (because of the new user interface) The beta is already out.

**[E]theli** · 10-10-2010, 04:31 AM

Originally Posted by K4spi

Any news about porting this to blender 2.5? I would be very thankful for it, since 2.5 is the only version I'm familiar with. (because of the new user interface) The beta is already out.

i know that beta is out, and i still plan to port.. however i don't have much time atm for that ... but i'll port it someday ... patches are welcome :P

**[E]AceSamael** · 10-11-2010, 04:30 AM

Simply awesome!

**Yuichi** · 11-18-2010, 01:30 AM

Just thought I would stop by and say thanks.
Also would love to have it on the newer versions since they make life so much easier

Its just a hassle to use 2.49b to export/import things but I'll manage somehow.
Just dont let this awesome thing die.

Thread: Blender Model import/export scripts

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