python - list connections, too many...

[Dariusz Makowski (Dadal)]

Heya

Bit sort of non/related question...

I'm trying to list incoming connection to my shader but I get some extra nodes I'm not sure how to filter out
I want to make a script to disconnect textures attached to nodes on multiple shaders. I got MR one working but Vray for some reason somehow is picky...
Any hints?

selected = cmds.ls(sl=1, mat=1)
for materials in selected:
connections = cmds.listConnections(c=1)
newMatName = materials +'.diffuseColorAmount'
for inNodes in connections:
cmds.disconnectAttr(connections,newMatName)


# Error: Invalid argument 1, '[u'VRayMtl1.message', u'materialInfo1', u'VRayMtl1.message', u'defaultShaderList1', u'VRayMtl1.outColor', u'VRayMtl1SG', u'VRayMtl1.diffuseColorAmount', u'VRayFlakesMtl1']'. Expected arguments of type ( , )
# Traceback (most recent call last):
# File "<maya console>", line 6, in <module>
# TypeError: Invalid argument 1, '[u'VRayMtl1.message', u'materialInfo1', u'VRayMtl1.message', u'defaultShaderList1', u'VRayMtl1.outColor', u'VRayMtl1SG', u'VRayMtl1.diffuseColorAmount', u'VRayFlakesMtl1']'. Expected arguments of type ( , ) #

Thanks, bye.

[vlado]

Instead of

for inNodes in connections:
    cmds.disconnectAttr(connections,newMatName)

should it not be

for inNodes in connections:
    cmds.disconnectAttr([color=red]inNodes[/color],newMatName)

Best regards,
Vlado

[Dariusz Makowski (Dadal)]

Heya Vlado

Thanks for fast reply.

Humh silly me that makes more sense than what I had. But atm for some reason it is still not working. The cmds.listConnections(c=1) still give me a lot more nodes that I need. I end up with error again.
*

selected = cmds.ls(sl=1, mat=1)
for materials in selected:
    connections = cmds.listConnections(c=1)
    newMatName = materials +'.diffuseColorAmount'
    for inNodes in connections:
        cmds.disconnectAttr(inNodes,newMatName)

# Error: There is no connection from 'VRayMtl2.message' to 'VRayMtl2.diffuseColorAmount' to disconnect
# Traceback (most recent call last):
#   File "<maya console>", line 6, in <module>
# RuntimeError: There is no connection from 'VRayMtl2.message' to 'VRayMtl2.diffuseColorAmount' to disconnect #
*

I know whats wrong with it I'm just not sure how to filter out the data I want

This is my MR version of script which works last time I check...
*

	mats = cmds.ls(sl=1)	
	for mat in mats: # iterate
	    conns = cmds.listConnections(mat, p=True) or [] # get connections
	    cmds.editRenderLayerAdjustment('%s.%s'%(mat,'reflectivity'))
	    cmds.editRenderLayerAdjustment('%s.%s'%(mat,'refl_color')) 
	    for conn in conns: # iterate
	    	try: #...
	        	cmds.disconnectAttr(conn,'%s.%s'%(mat,'reflectivity')) # disconnect
	        except: #...
	        	pass  #...
	        try:
	        	cmds.disconnectAttr(conn,'%s.%s'%(mat,'refl_color')) # disconnect
	        except:
	        	pass
*

I know its not the prieatest one and TRY function hide a lot of issues but it does work (somehow)...

I tried the same with vray and no luck

[vlado]

What stops you from using the try/except code for the V-Ray code too??? You are probably getting errors with the MR code as well, but they are ignored because of the try/except.

Best regards,
Vlado

[Dariusz Makowski (Dadal)]

Well that's the tricky weird think. When I tried try/pass it didnt work either.It execute the scripts, connection still stays and nothing happenz. I need to retest it another 10x see if I can come up with some "Creative" way of fixing it

Thanks for help Vlado.