Rename materials according to a parameter

[ben]

Hi,

I would like to rename materials according to a parameter.

I expected something like that to work :

MyMat_`chs(« ../../CONTROL/MatName ») `_A

But unfortunately it doesn’t…

Any ideas ?

thx

[hopbin9]

You can't use hscript in the name of a node.

This can easily be done using the callback of the parameter. Here's an example using Python.

hou.node("../../material_node").setName("MyMat_"+kwargs["node"].evalParm("MatName")+"_A")

[motionprojects]

I'm trying to do something similar. When you load a geometry file with the "`" key get a geometry node automatically named for the file sop's file string. I would like this to persist, so that choosing a different file will again rename the geometry node.

I've not done any python expressions or callbacks before, so thanks in advance for the guidance.

[hopbin9]

I'm trying to do something similar. When you load a geometry file with the "`" key get a geometry node automatically named for the file sop's file string. I would like this to persist, so that choosing a different file will again rename the geometry node.

I've not done any python expressions or callbacks before, so thanks in advance for the guidance.

Seriously did not know that ` was a short cut for loading a file. Thanks

I don't think something like that is very hard. Add the following to the callback for a file parameter in your asset.

import os; kwargs["node"].setName(os.path.basename(kwargs["node"].evalParm("file")))

Where "file" is the parameter name that should be used to set the node's name.

EDIT: Make sure you set the callback to Python.

Edited September 7, 2012 by hopbin9

[ben]

Thanks ! The callback will do the trick.