How to change material preset of Stingray material in python

[hansyuan.yang]

Hi, I use python to create a Stingray material. But I want to change the material preset from "Standard" to "Standard_Masked". How do I do it?  Thank you.

 

[rajasekaransurjen · Accepted solution]

Hi,

Try This....

import maya.cmds as cmds
cmds.optionMenuGrp("ShaderFXMenuGrpPresetMaterial", edit=True, select = 3)

The select index is as follows

1 "Custom"
2 "presets/Standard"
3 "presets/Standard_Masked"
4 "presets/Standard_Transparent"

[hansyuan.yang]

Hi, just found out when I use this command it can select different preset successfully.  But when I click any other place , the selection jumps back to the default value. And it's not pop out the warning "

Loading a preset or switching to custom deletes the old shader graph. This action cannot be undone. Continue?

" as manual select.  I think I need one more "update" or something after selecting it?   Thank you

[hansyuan.yang]

I end up to use this:

import maya.mel as mel
cmds.optionMenuGrp("ShaderFXMenuGrpPresetMaterial", edit=True, select = 3)
mel.eval("ShaderFXChangeMenuPresetMaterial")

[hansyuan.yang · Accepted solution]

The previous one is not the correct method and causes some issue. This one is better. It actually set presets type and no need for the update.

import maya.mel as mel
mel.eval('shaderfx -sfxnode {0} -edit_stringlist 1 "presets" {1};'.format(_newMat,2))

[laise.medroom]

I'm curious what did you put in _newMaterial? I tried putting the name of my shader FX mterial, but it gives me the error # Error: RuntimeError: file <maya console> line 6: Error occurred during execution of MEL script
# line 1: Invalid argument:

[hansyuan.yang]

Hi
It's been a long time I can't really recall it. But I guess is the ShadingNode:
self.stingrayMat = cmds.shadingNode('StingrayPBS', asShader=True, name = "StingrayPBS_Preview" )