Maya py script

[chrrox]

here is a sample maya py import script for hatsune miku for ipad.
its working great now including uv's
maya help
http://download.autodesk.com/us/maya/20 ... f40f22b125

Code: Select all

# Music Girl:Hatsune Miku
# Maya Python script

import maya.cmds as cmds
import maya.OpenMaya as om
import struct

def get_mobject(node):
	selectionList = om.MSelectionList()
	selectionList.add(node)
	oNode = om.MObject()
	selectionList.getDependNode(0, oNode)
	return oNode 

fname = cmds.fileDialog2(fm=1, ff='Music Girl:Hatsune Miku .mdl (*.mdl);;All Files (*.*)')[0]
f = open(fname, "rb")

magic = struct.unpack("4s",f.read(4))[0]
header = struct.unpack("4i",f.read(16))
f.seek(0x60, 0)
vertInfo = []
for i in range(0 ,header[3]):
	meshInfo = struct.unpack("4i",f.read(0x10))
	meshMatrix = struct.unpack("12f",f.read(0x30))
	meshInfo2 = struct.unpack("4i",f.read(0x10))
	vertInfo.append([meshInfo,meshMatrix,meshInfo2])
print(f.tell())
boneInfo = struct.unpack("4i",f.read(0x10))
texInfo = struct.unpack("4i",f.read(0x10))
matInfo = struct.unpack("4i",f.read(0x10))
vertOff = struct.unpack(str(header[3]) + "i",f.read(header[3] * 4))
faceOff = struct.unpack(str(header[3]) + "i",f.read(header[3] * 4))
weightOff = struct.unpack(str(header[3]) + "i",f.read(header[3] * 4))

for i in range(0 ,header[3]):
	vertexArray = om.MFloatPointArray()
	normalArray = om.MFloatPointArray()
	uArray = om.MFloatArray()
	vArray = om.MFloatArray()
	uvCounts = om.MIntArray()
	uvIds = om.MIntArray()
	f.seek(vertOff[i], 0)
	for a in range(0 ,vertInfo[i][0][1]):
		verts = struct.unpack("8f",f.read(32))
		pt = om.MFloatPoint(verts[0],verts[1], verts[2])
		vertexArray.append(pt)
		uArray.append(verts[6])
		vArray.append((verts[7] * -1) + 1)

	f.seek(faceOff[i], 0)
	pConnects = om.MIntArray()
	pCounts = om.MIntArray()
	for a in range(0 ,vertInfo[i][0][0]):
		faceCount = struct.unpack("H",f.read(2))[0]	
		matID = struct.unpack("H",f.read(2))[0]
		fstart = f.tell()
		StartDirection = -1
		f1 = struct.unpack("H",f.read(2))[0]
		f2 = struct.unpack("H",f.read(2))[0]
		FaceDirection = StartDirection
		while f.tell() < (fstart + (2 *faceCount )):
			f3 = struct.unpack("H",f.read(2))[0]
			if f3 == 0xFFFF:
				f1 = struct.unpack("H",f.read(2))[0]
				f2 = struct.unpack("H",f.read(2))[0]
				FaceDirection = StartDirection
			else:
				FaceDirection *= -1
				if (f1 != f2 and f1 != f3 and f3 != f2) : 
					if FaceDirection > 0:
						pConnects.append(f1)
						pConnects.append(f2)
						pConnects.append(f3)
					else:
						pConnects.append(f1)
						pConnects.append(f3)
						pConnects.append(f2)
					pCounts.append(3)
				f1 = f2
				f2 = f3

	f.seek(weightOff[i], 0)
	uvCounts = pCounts
	mesh = om.MFnMesh()
	ShapeMesh = cmds.group(em=True) # <-- we create an empty group/ trnasform node that will receive the mesh node as a sibling
	parentOwner = get_mobject( ShapeMesh )
	meshMObj = mesh.create(vertInfo[i][0][1], len(pCounts), vertexArray, pCounts, pConnects, uArray, vArray ,parentOwner ) #<-- don't forget to add a parent owner
	cmds.sets( 'null' + str(i + 1), e=True,forceElement='initialShadingGroup') # <--assign the defaut lambert shader
	defaultUVSetName = ''
	defaultUVSetName = mesh.currentUVSetName(-1)
	mesh.setUVs( uArray, vArray, defaultUVSetName )
        #if you want to manually set the uv's
	#for a in range(0 ,mesh.numPolygons()):
	#	for point in range(0 ,3):
	#		mesh.assignUV(a, point, pConnects[a*3+point] )
	mesh.assignUVs(pCounts,pConnects, defaultUVSetName)

#struct.unpack(4*"i",f.read(struct.calcsize(4*"i")))[0] 
#f.seek(4, 0) absolute
#f.seek(4, 1) current pos
#f.seek(4, 2) end of file

f.close()

[finale00]

How does the maya plugin interface work?
Do you just write your plugin and then say "load plugin" and then it will just execute your file? Since you specified a file open dialog.

[chrrox]

i am going to make a dock-able gui once i get the format strait but for now i just open the script editor and paste it in and hit run.
but you can setup python plugins to register at start-up just like noesis.
edit this is a good start
http://etoia.free.fr/?p=1771

[TheDude]

Awesome work chrrox!
I used this along with your code over here: http://gameresearch.5d6d.net/archiver/tid-199.html to learn how to create importers for Maya.
Do you have any example skinning/skeleton code? For some reason I understand source code better than docs.

[Dinoguy1000]

For some reason I understand source code better than docs.

Because it's a damn sight harder to make docs worth anything than it is to simply make some illustrative source code (as I'm sure just about anyone who's done both will tell you).

[TheDude]

Because it's a damn sight harder to make docs worth anything than it is to simply make some illustrative source code (as I'm sure just about anyone who's done both will tell you).

[chrrox]

here is the sample weight importing.

Code: Select all

# Music Girl:Hatsune Miku
# Maya Python script

import maya.cmds as cmds
import pymel.core as pm
import maya.OpenMaya as om
import maya.OpenMayaAnim as oma
import os
import struct

def get_mobject(node):
	selectionList = om.MSelectionList()
	selectionList.add(node)
	oNode = om.MObject()
	selectionList.getDependNode(0, oNode)
	return oNode 

fname = cmds.fileDialog2(fm=1, ff='Music Girl:Hatsune Miku .mdl (*.mdl);;All Files (*.*)')[0]
f = open(fname, "rb")

base=os.path.basename(fname)
os.path.splitext(base)
base=os.path.splitext(base)[0]

magic = struct.unpack("4s",f.read(4))[0]
header = struct.unpack("4i",f.read(16))
f.seek(0x60, 0)
vertInfo = []
for i in range(0 ,header[3]):
	meshInfo = struct.unpack("4i",f.read(0x10))
	meshMatrix = struct.unpack("12f",f.read(0x30))
	meshInfo2 = struct.unpack("4i",f.read(0x10))
	vertInfo.append([meshInfo,meshMatrix,meshInfo2])
print(f.tell())
boneInfo = struct.unpack("4i",f.read(0x10))
texInfo = struct.unpack("4i",f.read(0x10))
matInfo = struct.unpack("4i",f.read(0x10))
vertOff = struct.unpack(str(header[3]) + "i",f.read(header[3] * 4))
faceOff = struct.unpack(str(header[3]) + "i",f.read(header[3] * 4))
weightOff = struct.unpack(str(header[3]) + "i",f.read(header[3] * 4))

f.seek(boneInfo[1], 0)
boneArray = []
for i in range(0 ,boneInfo[0]):
	boneMat = struct.unpack("16f",f.read(0x40))
	boneDat = struct.unpack("4I",f.read(0x10))
	bonePosition = om.MVector(boneMat[0], boneMat[1], boneMat[2])
	boneOritation = om.MQuaternion(boneMat[4], boneMat[5], boneMat[6], boneMat[7])
	#boneScale = om.MVector(boneMat[8], boneMat[9], boneMat[10])
	if boneDat[0] == 0xFFFFFFFF:
		cmds.select( clear=True)
	else:
		pm.select(boneArray[boneDat[0]])
	newBone = pm.joint( p=(0,0,0), name='joint' + str(i),radius= (0.1) )
	newBone.setTranslation(bonePosition)
	newBone.setOrientation(boneOritation)
	boneArray.append(newBone)
	cmds.objExists("joint' + str(i)")
if len(boneArray) != 0:
    cmds.setAttr (str(boneArray[0]) + ".overrideEnabled", 1)
    cmds.setAttr (str(boneArray[0]) + ".overrideColor", 16)

for i in range(0 ,header[3]):
	vertexArray = om.MFloatPointArray()
	normalArray = om.MFloatPointArray()
	uArray = om.MFloatArray()
	vArray = om.MFloatArray()
	uvCounts = om.MIntArray()
	uvIds = om.MIntArray()
	f.seek(vertOff[i], 0)
	for a in range(0 ,vertInfo[i][0][1]):
		verts = struct.unpack("8f",f.read(32))
		pt = om.MFloatPoint(verts[0],verts[1], verts[2])
		vertexArray.append(pt)
		uArray.append(verts[6])
		vArray.append((verts[7] * -1) + 1)

	f.seek(faceOff[i], 0)
	pConnects = om.MIntArray()
	pCounts = om.MIntArray()
	for a in range(0 ,vertInfo[i][0][0]):
		faceCount = struct.unpack("H",f.read(2))[0]	
		matID = struct.unpack("H",f.read(2))[0]
		fstart = f.tell()
		StartDirection = -1
		f1 = struct.unpack("H",f.read(2))[0]
		f2 = struct.unpack("H",f.read(2))[0]
		FaceDirection = StartDirection
		while f.tell() < (fstart + (2 *faceCount )):
			f3 = struct.unpack("H",f.read(2))[0]
			if f3 == 0xFFFF:
				f1 = struct.unpack("H",f.read(2))[0]
				f2 = struct.unpack("H",f.read(2))[0]
				FaceDirection = StartDirection
			else:
				FaceDirection *= -1
				if (f1 != f2 and f1 != f3 and f3 != f2) : 
					if FaceDirection > 0:
						pConnects.append(f1)
						pConnects.append(f2)
						pConnects.append(f3)
					else:
						pConnects.append(f1)
						pConnects.append(f3)
						pConnects.append(f2)
					pCounts.append(3)
				f1 = f2
				f2 = f3

	f.seek(weightOff[i], 0)
	weights = {}
	for a in range(0 ,vertInfo[i][0][1]):
		vWeights = {}
		wCount = struct.unpack("I",f.read(4))[0]
		for b in range(0 ,wCount):
			boneId = struct.unpack("I",f.read(4))[0]
			weight = struct.unpack("f",f.read(4))[0]
			vWeights[boneId] = weight
		weights[a] = vWeights
	uvCounts = pCounts
	mesh = om.MFnMesh()
	ShapeMesh = cmds.group( em=True, name='null_' + base + str(i) )  # <-- we create an empty group/ trnasform node that will receive the mesh node as a sibling
	parentOwner = get_mobject( ShapeMesh )
	meshMObj = mesh.create(vertInfo[i][0][1], len(pCounts), vertexArray, pCounts, pConnects, uArray, vArray ,parentOwner ) #<-- don't forget to add a parent owner
	cmds.sets( 'null_' + base + str(i), e=True,forceElement='initialShadingGroup') # <--assign the defaut lambert shader
	defaultUVSetName = ''
	defaultUVSetName = mesh.currentUVSetName(-1)
	mesh.setUVs( uArray, vArray, defaultUVSetName )
	#for a in range(0 ,mesh.numPolygons()):
	#	for point in range(0 ,3):
	#		mesh.assignUV(a, point, pConnects[a*3+point] )
	mesh.assignUVs(pCounts,pConnects, defaultUVSetName)
	mesh.setName('mesh_' + base + str(i))
	if len(boneArray) != 0:
	    pm.skinCluster( str(boneArray[0]), 'mesh_' + base + str(i),sm=2,mi=4,omi=1,n='skinCluster_' + base + str(i))
	#pm.rename( 'skinCluster' + str(i + 1), 'miku_Skin' + str(i))

	# poly mesh and skinCluster name
	shapeName = 'mesh_' + base + str(i)
	clusterName = 'skinCluster_' + base + str(i)

	# get the MFnSkinCluster for clusterName
	selList = om.MSelectionList()
	selList.add(clusterName)
	clusterNode = om.MObject()
	selList.getDependNode(0, clusterNode)
	skinFn = oma.MFnSkinCluster(clusterNode)

	# get the MDagPath for all influence
	infDags = om.MDagPathArray()
	skinFn.influenceObjects(infDags)

	# create a dictionary whose key is the MPlug indice id and 
	# whose value is the influence list id
	infIds = {}
	infs = []
	for x in xrange(infDags.length()):
		infPath = infDags[x].fullPathName()
		infId = int(skinFn.indexForInfluenceObject(infDags[x]))
		infIds[infId] = x
		infs.append(infPath)

	# get the MPlug for the weightList and weights attributes
	wlPlug = skinFn.findPlug('weightList')
	wPlug = skinFn.findPlug('weights')
	wlAttr = wlPlug.attribute()
	wAttr = wPlug.attribute()
	wInfIds = om.MIntArray()

	# unlock influences used by skincluster
	for inf in infs:
		cmds.setAttr('%s.liw' % inf)

	# normalize needs turned off for the prune to work
	skinNorm = cmds.getAttr('%s.normalizeWeights' % clusterName)
	if skinNorm != 0:
		cmds.setAttr('%s.normalizeWeights' % clusterName, 0)
	cmds.skinPercent(clusterName, shapeName, nrm=False, prw=100)

	# restore normalize setting
	if skinNorm != 0:
		cmds.setAttr('%s.normalizeWeights' % clusterName, skinNorm)

	for vertId, weightData in weights.items():
		wlAttr = '%s.weightList[%s]' % (clusterName, vertId)
		for infId, infValue in weightData.items():
			wAttr = '.weights[%s]' % infId
			cmds.setAttr(wlAttr + wAttr, infValue)


#struct.unpack(4*"i",f.read(struct.calcsize(4*"i")))[0] 
#f.seek(4, 0) absolute
#f.seek(4, 1) current pos
#f.seek(4, 2) end of file

f.close()

[TheDude]

Thanks chrrox!

[Dinoguy1000]

You could also thank him for his post (the little yellow thumbs-up button at the bottom of his post).

[TheDude]

It's a sad day when digital cookies aren't enough.
Ugh, forums are too complicated - Python is easier.