I think I get what you're after. shaders are assigned through ShadingEngine
nodes, which are sets (the mesh itself does not contain shader assignment
data), so you can query the shadingEngine sets for their members like so:
import pymel.core as PM
def getShadingGroupMembership():
'''
Get a dictionary of shading group set information
{'shadingGroup': [assignmnet1, assignment2...]}
'''
result = {}
sgs = PM.ls(type='shadingEngine')
for sg in sgs:
result[sg.name()] = sg.members(flatten=True)
return result
You can go the other way around (finding from the mesh instead of the
shading group) by querying the mesh shape for connections to shading engine
nodes.
-JP
On Sat, May 28, 2011 at 11:08 AM, Martin La Land Romero <
martinmrom...@gmail.com> wrote:
> My tool exports the entire scene with all the textures to a new location,
> perhaps it has some handy line or lines that can help you out!
>
>
> import maya.cmds as cmds
> import os
> import shutil
>
>
>
> def AskUserForSaveLocation():
> """
> This function asks the user for the new location of the .mb, .ma file,
> the user only needs to provide a direction.
> """
> #newLocation ='C:\Users\FFION2\Desktop\GDC_VFX_CLASS' #hardcoded >
> enter your target directory.
> multipleFilters = "Maya Files (*.ma *.mb);;Maya ASCII (*.ma);;Maya
> Binary (*.mb);;All Files (*.*)"
> newLocation = cmds.fileDialog2(fileFilter=multipleFilters, fileMode=2,
> dialogStyle=2)
>
> print (newLocation, "choosen directory")
> return newLocation[0]
>
> def copyToNewLocation(srcFiles, destDirectory):
> """
> This function checks the for the current location of the file. It also
> copies each one of the assets to a new directory specified by the user.
> """
>
> #It goes trough each texture as well as the maya file and place them in
> the new location.
> for i in srcFiles:
> print(i, "Got transferred")
> shutil.copy(i, destDirectory )
>
>
> def AskAndCopyCurrentSceneToNewDirectory():
> """
> This function creates a window with a button. It also asks the user to
> enter a new directory and copies the maya file as well as the teuxtures to
> the new directory.
> """
>
> #Location of the current maya scene.
> mySceneAssets = cmds.file( q=True, l=True, loc=True )
> newLocation = AskUserForSaveLocation()
>
> #call fucntion copyToNewLocation.
> copyToNewLocation(mySceneAssets, newLocation)
>
> mr_copyNewLocUI = ''
> if cmds.window(mr_copyNewLocUI, exists= True):
> cmds.deleteUI(mr_copyNewLocUI)
> else:
> mr_copyNewLocUI = cmds.window(widthHeight = (357, 139), title =
> 'mr_CopyAllToNewLocation', mxb = False, mnb = False)
> mainCol = cmds.columnLayout( adj = True)
> cmds.rowColumnLayout( numberOfColumns=2, columnAttach=(1, 'right', 0),
> columnWidth=[(1, 100), (2, 250)] )
>
> #Create a menuBar with menuItems
> cmds.text( label='' )
> currDirBtm = cmds.button(label= 'ExportAllTextures/MayaFile', command =
> 'AskAndCopyCurrentSceneToNewDirectory()' )
>
> #Shows the window.
> cmds.showWindow(mr_copyNewLocUI)
>
>
>
> On Sat, May 28, 2011 at 10:15 AM, Michiel Duvekot <mduve...@gmail.com>wrote:
>
>> // assuming you've selected a face
>> sel = cmds.ls(sl=True)
>> cmds.hyperShade( shaderNetworksSelectMaterialNodes=True )
>> print "%s -> %s" % (sel[0], cmds.ls(sl=True)[0])
>> cmds.select(sel, replace=True)
>>
>>
>> On May 27, 2:23 pm, MaloW <ma...@spray.se> wrote:
>> > Hi, I'm working on creating an .obj-exporter as a part of a school
>> > project using MEL, Python and PyMEL. I've got it working great, but
>> > right now it can't export several materials for 1 object. My teacher
>> > wasn't quite sure how to do this either but told me that I could ask
>> > here.
>> > How can I from a face, and not from the object, find out which
>> > material is connected to it, so that I can export the materials per-
>> > face and not per-object? I've tried looking at the documentation of
>> > PyMEL as well as using dir() inside maya on a face, but I found
>> > nothing that I thought could be of use.
>> > Any help is appreciated, thanks.
>>
>> --
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>
>
>
> --
> Martin La Land Romero
> www.martinromerovfx.com
> http://martinromerovfx.blogspot.com/
> martinmrom...@gmail.com
> (415)261-2172
>
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>
--
John Patrick
404-242-2675
jspatr...@gmail.com
http://www.canyourigit.com
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