[Python] LayerShader.AddLayer() -> Defining Shader

PdZ 1

Hello all,

I tried everything to figure out how to use the newly added Python-Command "LayerShader.AddLayer()" in S24.
As far as I know it only adds the "Type" of Layer. For Example I want to add a certain shader to the Layer I first use AddLayer(c4d.TypeShader) and this will give me an empty "Shader". But how can I define this shader to a specific Shader then?
(https://developers.maxon.net/docs/py/2023_2/modules/c4d/C4DAtom/GeListNode/BaseList2D/BaseShader/LayerShader/index.html?highlight=addlayer#LayerShader.AddLayer)

I tried everything but I dont get it... does someone know how to do it?

Thx in advance!

m_adam

NOTE ( @ferdinand ) : The here provided code example contains an error, please refer to How to Create and Populate a Layer Shader? instead.

Hi @PdZ-1 welcome in plugincafe.

The type need to be one of the LayerType.
So to have a regular BaseShader you first need to create a TypeShader layer and then set the link.
Find a code snippet

import c4d


# Main function
def main():
    # Retrieveh teh Layer Shader
    mat = doc.GetFirstMaterial()
    sha_xlayer = mat.GetFirstShader()
    
    # Create an HSL layer
    hsl = sha_xlayer.AddLayer(c4d.TypeHSL)
    
    # Create a Shader Layer
    shader_layer = sha_xlayer.AddLayer(c4d.TypeShader)
    
    # Create a Gradient Shader
    gradient_shader = c4d.BaseShader(c4d.Xgradient)
    
    # Insert this gradient to the material (so the material become the owner of this shader too)
    mat.InsertShader(gradient_shader, sha_xlayer)
    
    # Finally set the Shader Layer link to the Gradient Shader
    shader_layer.SetParameter(c4d.LAYER_S_PARAM_SHADER_LINK, gradient_shader)

    c4d.EventAdd()

# Execute main()
if __name__=='__main__':
    main()

Cheers,
Maxime.

ferdinand

Hello @PdZ-1,

without further questions or replies, we will consider this topic as solved by Monday, the 30th and flag it accordingly.

Thank you for your understanding,
Ferdinand

indexofrefraction

Hi... I'm trying to figure out how to handle nested LayerShaders

mat.InsertShader(gradient_shader, sha_xlayer) inserts gradient_shader as a child of sha_xlayer ?
Would sha_xlayer.InsertShader(gradient_shader) do exactly the same thing ?

If yes, does mat.InsertShader(sha_xlayer) have to be done first as well,
or can you set up a shader tree first and then add it to the material?

best, index