本文介绍如何使用 Python 创建新材质、添加着色器、创建新对象并将材质分配给 Blender 中的对象。

首先，创建一种新材质。该函数将字符串作为新材质的名称：

import bpydef newMaterial(id):    mat = bpy.data.materials.get(id)    if mat is None:        mat = bpy.data.materials.new(name=id)    mat.use_nodes = True    if mat.node_tree:        mat.node_tree.links.clear()        mat.node_tree.nodes.clear()    return mat

然后为材质添加着色器。输入着色器的类型（即漫反射、发射、光泽）和 rgb 颜色：

def newShader(id, type, r, g, b):    mat = newMaterial(id)    nodes = mat.node_tree.nodes    links = mat.node_tree.links    output = nodes.new(type='ShaderNodeOutputMaterial')    if type == "diffuse":        shader = nodes.new(type='ShaderNodeBsdfDiffuse')        nodes["Diffuse BSDF"].inputs[0].default_value = (r, g, b, 1)    elif type == "emission":        shader = nodes.new(type='ShaderNodeEmission')        nodes["Emission"].inputs[0].default_value = (r, g, b, 1)        nodes["Emission"].inputs[1].default_value = 1    elif type == "glossy":        shader = nodes.new(type='ShaderNodeBsdfGlossy')        nodes["Glossy BSDF"].inputs[0].default_value = (r, g, b, 1)        nodes["Glossy BSDF"].inputs[1].default_value = 0    links.new(shader.outputs[0], output.inputs[0])    return mat

然后创建对象，分配材质并调用函数：

def drawObject():    mat = newShader("Shader1", "diffuse", 1, 1, 1)    bpy.ops.mesh.primitive_cube_add(size=2, align='WORLD', location=(0, 0, 0))    bpy.context.active_object.data.materials.append(mat)drawObject()

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原文链接：http://www.bimant.com/blog/blender-material-assignment-with-python/