topic Re: How to select faces by Its Material? in Maya Shading, Lighting and Rendering Forum

How to select faces by Its Material?

Anonymous — Tue, 05 Jan 2016 16:23:29 GMT

Is there a way I can select all the faces which are assigned to a certain material?

Re: How to select faces by Its Material?

J450NP13 — Tue, 05 Jan 2016 17:10:51 GMT

Go into the hypershader and right click on a shader and select select objects by material.

Re: How to select faces by Its Material?

jewboy0117 — Wed, 29 May 2019 19:31:10 GMT

this is not an answer to selecting faces, only objects with said materials. If you have an object with multiple materials then this can be a problem.

Re: How to select faces by Its Material?

Anonymous — Thu, 04 Jul 2019 02:18:15 GMT

If you follow the steps above, you can selected faces with different materials in the same object.

Re: How to select faces by Its Material?

Climber_FX — Sat, 09 Nov 2019 18:02:28 GMT

The problem is only when you want to select the faces of only one of many objects that have this particular shader between many others. If you have one object with multi materials, it select only the faces with your choice on the object.

Re: How to select faces by Its Material?

Christoph_Schaedl — Thu, 14 Nov 2019 13:42:30 GMT

Use this Python script.

import maya.cmds as mc
# select object or face
b = mc.ls(sl=1)[0].split("[")[0] # remember a token for comparison below
mc.hyperShade(smn=1) # that will select the shader
s = mc.ls(sl=1)[0] # remember the selected shader
sg = mc.listConnections(s+".oc", s=0, d=1)[0] # figure out the shading group
# select the faces of the same object with same shader attached
l = []
for o in mc.sets(sg, q=1):
    if b not in o: continue
    l.append(o)
mc.select(l)

Re: How to select faces by Its Material?

andymc4997 — Mon, 13 Jan 2020 22:23:18 GMT

Hi, I really need this script to work, as I have multiple objects which have multiple shaders assigned. However, I'm receiving this error for a given material:

Error: ValueError: file <maya console> line 6: No object matches name: Metal.oc

"Metal" is the shader I'm trying to switch out with a different one on my selected object. Can this be fixed?

My specs:

Maya '20

Win10 64bit

Thanks so much in advance.

Re: How to select faces by Its Material?

kopacabana — Fri, 23 Oct 2020 05:51:05 GMT

Hi Andy,

If you need to select another shader, specify the index (change 0 by another index) :

s = mc.ls(sl=1)[0]

For the ".oc" problem, replace :

sg = mc.listConnections(s+".oc", s=0, d=1)[0]

with :

sg = mc.listConnections(s, s=0, d=1)[0]

Re: How to select faces by Its Material?

Anonymous — Sat, 07 Aug 2021 00:43:36 GMT

sux