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SWG .MSH Exporter for 3DS Max
Posted: Mon Jun 04, 2012 8:16 pm
by arkanic
I recently found a script by fatduck
download/file.php?id=1203 that imports .msh files into 3d max and I would like to be able to reverse it so I can export models into .msh. I'm a noob when it comes to maxscript, so I just wrote a simple script to export the model data from 3ds max. Problem is the data I imported does not match the data I exported. So if someone could tell me that I am doing x wrong, or that I need to do the y to complete the conversion, that would be very helpful. Thanks.
My code
Code: Select all
rollout SWG_roll "Model exporter" (
--GUI--
spinner fscale "Scale : " fieldwidth:60 range:[0.001, 1000, 1]
button expMSH "Export MSH" width:150 Height:25 align:#center
label lbl1 ""
label lbl2 "Based off Fatduck Importer" align:#right
on expMSH pressed do (
fname = getSaveFileName caption:"Select Star Wars Galaxies Model file" types:"MSH File (*.msh)|*.msh|All Files (*.*)|*.*|"
if fname != undefined then (
f = createfile fname
close f
stream = fopen fname "wb"
for iObIndex = 1 to $objects.count do (
obj = selection
tmesh = snapshotAsMesh selection[1]
num_faces = getNumFaces tmesh
vertDupx = #(5.2)
vertDupy = #(5.2)
vertDupz = #(5.2)
for f=1 to num_faces do(
faceVertIndex = getFace tmesh f
tVertIndex = getTVFace tmesh f
for i=1 to 3 do(
check = false
vpos = getVert tmesh faceVertIndex[i]
for leng = 1 to vertDupx.count do (
if ((vpos.x == vertDupx[leng]) and (vpos.y == vertDupy[leng]) and (vpos.z == vertDupz[leng])) then (
check = true
continue
)
)
if (not check) then (
append vertDupx vpos.x
append vertDupy vpos.y
append vertDupz vpos.z
writeFloat stream vpos.x
writeFloat stream vpos.y
writeFloat stream vpos.z
normals = getNormal tmesh faceVertIndex[i]
n1 = sqrt(normals.x^2 + normals.y^2 + normals.z^2)
if (n1 == 0) then (
nx = 0
ny = 0
nz = 0
) else (
nx = (normals.x/n1)
ny = (normals.y/n1)
nz = (normals.z/n1)
)
writeFloat stream nx
writeFloat stream ny
WriteFloat stream nz
vuvpos = getTVert tmesh tVertIndex[i]
writeFloat stream vuvpos.x
writeFloat stream vuvpos.y
)
)
)
)
fclose stream
)--end if fname
)--end on impMGN
)--end rollout SWG_roll
floater = newRolloutFloater "Star Wars Galaxies" 200 175 10 70
addRollout SWG_roll floater
Re: SWG .MSH Exporter for 3DS Max
Posted: Mon Jun 04, 2012 9:48 pm
by finale00
Just pastebin it or something.
I'm not downloading a file to see a script.
Re: SWG .MSH Exporter for 3DS Max
Posted: Tue Jun 05, 2012 1:08 am
by arkanic
Ok, I pastebin the import script
http://pastebin.com/UuEskqAv
Re: SWG .MSH Exporter for 3DS Max
Posted: Tue Jun 05, 2012 6:05 am
by finale00
The data your write out definitely would be different from the original format because you don't seem to be writing out the file the way it is read.
A complete import script can simply be flipped around to become a complete export script, writing the same data at the same places.
For example, I'm looking at the import script and see a lot of different cases for the different vertex formats but it doesn't seem like you're writing that information out in your export script.
Similarly, there are a lot of other pieces of data that are read to check which branch to execute, but you haven't included those in your export script either.
Code: Select all
fn readINDX f = (
FCary = #()
datasize = readInvLong f
numIndex = readlong f
sizeElement = datasize / numIndex
for i = 1 to (numIndex/3) do (
if sizeElement == 2 then (
f1 = 1 + (readshort f #unsigned)
f2 = 1 + (readshort f #unsigned)
f3 = 1 + (readshort f #unsigned)
) else if sizeElement == 4 then (
f1 = 1 + (readlong f #unsigned)
f2 = 1 + (readlong f #unsigned)
f3 = 1 + (readlong f #unsigned)
) else messagebox "error in face index"
append FCary [f1,f2,f3]
)
return FCary
)
You should be doing something similar here as well in your export script, except instead of reading you're writing.
I'm not sure where you are writing out the face indices either.
Re: SWG .MSH Exporter for 3DS Max
Posted: Tue Jun 05, 2012 5:15 pm
by arkanic
I didn't think I could just flip it around, but will give that a shot. Thanks
Re: SWG .MSH Exporter for 3DS Max
Posted: Sun Jun 10, 2012 2:44 am
by arkanic
I've got quite a bit of the basics completed but am mainly having trouble with two things right now. If someone could help me figure them out, that would be great.
My normals do not match up. Sometimes they are flipped, most of the time they are missing or way out of place.
Code: Select all
for f=1 to numVerts do (
vpos = getVert tmesh f
append vertArray [vpos.x, vpos.z, -vpos.y]
normals = getNormal tmesh f
append normArray [normals.x, normals.z, -normals.y]
uvpos = getTVert tmesh f
uvY = uvpos.y
append uvArray [uvpos.x, (uvY-1) * -1]
--find min and max points for the bounding boxes
if f == 1 or vpos.x > maxX then (maxX = vpos.x)
if f == 1 or vpos.x < minX then (minX = vpos.x)
if f == 1 or vpos.z > maxY then (maxY = vpos.z)
if f == 1 or vpos.z < minY then (minY = vpos.z)
if f == 1 or (-vpos.y) > maxZ then (maxZ = -vpos.y)
if f == 1 or (-vpos.y) < minZ then (minZ = -vpos.y)
)
The second being the spherical bounding box radius. Whatever I am doing to compute this is wrong. The center is correct and so are the max and min points, but the radius is either to small or to large.
Code: Select all
difX = maxX - minX -- calculate center for the circle
difY = maxY - minY
difZ = maxZ - minZ
writeFloat stream (maxX - difX/2)
writeFloat stream (maxY - difY/2)
writeFloat stream (maxZ - difZ/2)
absX = abs(difX) -- calculate radius
absY = abs(difY)
absZ = abs(difZ)
if absX > absY and absX > absZ then (
writeFloat stream (absX*0.625)
) else if absY > absX and absY > absZ then (
writeFloat stream (absY*0.625)
) else (
writeFloat stream (absZ*0.625)
)
Re: SWG .MSH Exporter for 3DS Max
Posted: Sun Jun 10, 2012 5:05 am
by arkanic
Here is some raw data comparisions from a file that I imported and then exported without making any changes. Vertex points and UV points are a perfect match, but the normals are off on every axis.
Code: Select all
Original Data Export Data
VX: 79 B0 45 30 79 B0 45 30
VY: 9A 99 79 3F 9A 99 79 3F
VZ: 7D 56 74 BD 7D 56 74 BD
NX: 0B EE 0B 3E 74 3D 32 B3
NY: 5E EA 2D BD F8 8F 2F BD
NZ: 91 5D 7D BF C6 C3 7F BF
U: 00 00 00 3E 00 00 00 3E
V: 00 D8 72 3A 00 D8 72 3A