The easiest way to find the material on a shape is to select it and then
use the hypershade command:
cmds.hyperShade(shaderNetworksSelectMaterialNodes=True)
materials = cmds.ls(sl=True)
>From there you can find shadingEngines using something like
cmds.listConnections(m, source=False, type='shadingEngine')
(though beware, some of those might be the swatch shader in the Hypershade,
which you can't delete)
and then in the other direction, find the incoming connections to the
material:
cmds.listConnections(m, destination=False)
and for each of those connections, you probably want to look at its
incoming connections and delete those, etc. There are a few things you need
to avoid following, like references.
I hope that helps.
On Tuesday, 18 December 2018 06:00:45 UTC+11, James Kim wrote:
>
> I have a code where I create a shader and apply it to an object.
> However when i run the code again it creates entirely new nodes and
> applies to the object.
> Is there a way to delete the previous node so it doesnt clog up the
> hypershade?
>
> exampleCode:
>
> testPlane = cmds.polyPlane(name = 'test', width = widthTop/100, height =
> heightTop/100, sx=0, sy = 0)
>
> shaderT = cmds.shadingNode('testNode', asShader=True)
>
> shading_group1 = cmds.sets(renderable=True, noSurfaceShader=True, empty=True)
>
> cmds.connectAttr('%s.outColor' % shaderT, '%s.surfaceShader' % shading_group1)
>
> cmds.select('test')
> cmds.hyperShade(assign = shading_group1)
>
>
>
>
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