I’m trying to get the material name of a selected mesh in each renderLayers it is added, without switching render layers. However, I get this error: TypeError: object of type ‘RenderLayer’ has no len()
Code to get material from object:
import pymel.core as pm
import maya.cmds as cmds
# Create a dictionary for {"object1": ["material1", "material2"]}
objectToMaterials = {}
for obj in pm.ls(sl=1):
for layer in obj.listConnections(type="renderLayer"):
print 'object: %s layer: %s' % (obj, layer ) # result: object: pSphere1 layer: layer3
allChildren = cmds.listRelatives(ad=1)
for eachChild in allChildren:
if cmds.objectType(eachChild)=="mesh":
eachChild = cmds.listRelatives(eachChild, parent=1)
print eachChild # result: [u'pSphere1']
print layer # result: layer3
cmds.editRenderLayerGlobals(crl=layer) # result: TypeError: object of type 'RenderLayer' has no len() #
# Get the shader groups attached to this particular object
shaderGroups = cmds.listConnections(cmds.listHistory(eachChild))
if shaderGroups is not None:
# Get the material attached to the shader group
materials = [x for x in cmds.ls(cmds.listConnections(shaderGroups), materials=1)]
objectToMaterials.setdefault(eachChild[0], []).append(eachRenderLayer)
objectToMaterials.setdefault(eachChild[0], []).append(materials[0])
print(objectToMaterials)
Thanks for any help because i’ve done many tests without any success …