非常好的问题！ 你正在使用 **Maya 2018**，它默认使用 **Python 2.7**，而我之前提供的优化代码是基于 **Python 3** 的语法（比如 `f-string`、`format()` 等），这会导致你遇到 `invalid syntax` 错误。 --- ## ✅ 我将为你提供一个 **完全兼容 Maya 2018 / Python 2.7 的版本** ### ✅ 主要修改点： | 修改点 | 说明 | |--------|------| | ✅ 移除所有 `f-string` | Maya 2018 不支持 | | ✅ 使用 `str.format()` 或 `+` 拼接字符串 | | ✅ 替换所有 `print()` 为 `print ""` | Python 2 的写法 | | ✅ 确保 `OpenMaya2` 正确导入 | | ✅ 确保 `random.sample` 可用 | | ✅ 修复 `enumerate`、`list comprehensions` 等兼容性问题 | --- ## ✅ ✅ Maya 2018 / Python 2.7 完全兼容代码如下： ```python import maya.cmds as cmds import random from maya.api import OpenMaya as om2 def int_to_rgb(i): """将整数 i (0 ~ 16777215) 转换为 RGB 值（0-1）""" r = ((i >> 16) & 0xFF) / 255.0 g = ((i >> 8) & 0xFF) / 255.0 b = (i & 0xFF) / 255.0 return (r, g, b) def set_arnold_subdivision_gui(): window_name = "arnoldSubdivToolWindow" if cmds.window(window_name, exists=True): cmds.deleteUI(window_name) window = cmds.window(window_name, title="Arnold Subdivision & Material Tool", widthHeight=(320, 260)) main_layout = cmds.columnLayout(adj=True, rs=10) # ======================== # 第一部分：细分设置 # ======================== cmds.frameLayout(label="Arnold Subdivision Settings", width=300, collapsable=True) subdiv_layout = cmds.columnLayout(adj=True) type_menu = cmds.optionMenu(label="Type") cmds.menuItem(label="None") cmds.menuItem(label="Catclark") iteration_field = cmds.intFieldGrp(numberOfFields=1, label="Iterations", value1=2) apply_subdiv_button = cmds.button(label="Apply to Selected", command=lambda x: apply_subdivision_settings(type_menu, iteration_field)) cmds.button(apply_subdiv_button, edit=True, backgroundColor=[0, 1, 0]) cmds.setParent('..') cmds.setParent('..') # ======================== # 第二部分：材质设置 # ======================== cmds.frameLayout(label="Material Settings", width=300, collapsable=True) material_layout = cmds.columnLayout(adj=True) cmds.text(label="随机颜色分配（0-255，不重复）") apply_mat_button = cmds.button(label="Apply Material to Selected", command=apply_random_material_settings) cmds.button(apply_mat_button, edit=True, backgroundColor=[0, 1, 0]) cmds.setParent('..') cmds.setParent('..') cmds.showWindow(window) # ======================== # 功能函数：应用细分设置 # ======================== def apply_subdivision_settings(type_menu, iteration_field): type_index = cmds.optionMenu(type_menu, query=True, select=True) iterations = cmds.intFieldGrp(iteration_field, query=True, value1=True) subdiv_type = 'catclark' if type_index == 2 else 'none' set_arnold_subdivision(subdiv_type, iterations) def set_arnold_subdivision(subdiv_type='catclark', iterations=2): selected_transforms = cmds.ls(selection=True, transforms=True) if not selected_transforms: cmds.warning("Please select at least one object!") return for transform in selected_transforms: shapes = cmds.listRelatives(transform, shapes=True, fullPath=True) if not shapes: continue for shape in shapes: if cmds.objectType(shape) != 'mesh': continue if not cmds.attributeQuery('aiSubdivType', node=shape, exists=True): try: cmds.addAttr(shape, ln='aiSubdivType', at='enum', en='none:catclark', dv=0, k=True) except Exception as e: cmds.warning("无法为 %s 添加 aiSubdivType 属性：%s" % (shape, e)) continue if not cmds.attributeQuery('aiSubdivIterations', node=shape, exists=True): try: cmds.addAttr(shape, ln='aiSubdivIterations', at='long', min=0, max=10, dv=1, k=True) except Exception as e: cmds.warning("无法为 %s 添加 aiSubdivIterations 属性：%s" % (shape, e)) continue subdiv_value = 1 if subdiv_type == 'catclark' else 0 cmds.setAttr(shape + ".aiSubdivType", subdiv_value) cmds.setAttr(shape + ".aiSubdivIterations", iterations) print "成功设置 %s 的 Arnold Type 为 %s, Iterations 为 %s" % (shape, subdiv_type, iterations) # ======================== # 功能函数：应用随机不重复材质（优化版，批量分配） # ======================== def apply_random_material_settings(*args): selected_transforms = cmds.ls(selection=True, transforms=True) if not selected_transforms: cmds.warning("请先选择至少一个物体！") return num_objs = len(selected_transforms) total_colors = 16777216 # 256^3 if num_objs > total_colors: cmds.warning("物体数量超过可用颜色总数！") return # 随机选取不重复的整数ID（每个ID对应一个RGB颜色） color_indices = random.sample(range(total_colors), num_objs) # 材质缓存 material_cache = {} # 存储材质 -> shape 映射 mat_to_shapes = {} # 获取当前选择的 MSelectionList sel = om2.MGlobal.getActiveSelectionList() shapes_dag_paths = [] # 收集所有 shape 的 DAG 路径 for i in range(sel.length()): dag_path = sel.getDagPath(i) if dag_path.node().apiType() == om2.MFn.kTransform: for idx in range(dag_path.childCount()): child = dag_path.child(idx) if child.apiType() == om2.MFn.kMesh: child_path = om2.MDagPath(dag_path) child_path.extendToShapeDirectly(idx) shapes_dag_paths.append(child_path) # 禁用刷新 cmds.refresh(suspend=True) # 创建材质并分配 for idx, dag_path in enumerate(shapes_dag_paths): r, g, b = int_to_rgb(color_indices[idx]) r_int = int(r * 255) g_int = int(g * 255) b_int = int(b * 255) mat_name = "randomMat_ID_{0}_{1}_{2}".format(r_int, g_int, b_int) if mat_name in material_cache: mat = material_cache[mat_name] else: if not cmds.objExists(mat_name): mat = cmds.shadingNode('lambert', asShader=True, name=mat_name) sg = cmds.sets(renderable=True, noSurfaceShader=True, empty=True, name=mat_name + "SG") cmds.connectAttr(mat + ".outColor", sg + ".surfaceShader", f=True) cmds.setAttr(mat + ".color", r, g, b, type='double3') else: mat = mat_name material_cache[mat_name] = mat if mat not in mat_to_shapes: mat_to_shapes[mat] = [] mat_to_shapes[mat].append(dag_path.fullPathName()) # 批量赋材质 for mat, shapes in mat_to_shapes.items(): sg = mat + "SG" cmds.sets(shapes, forceElement=sg) # 恢复刷新 cmds.refresh(suspend=False) print "成功为 %s 个物体分配了随机颜色材质" % len(selected_transforms) # 打开工具窗口 set_arnold_subdivision_gui() ``` --- ## ✅ 兼容性总结 | 项目 | 是否兼容 Maya 2018 / Python 2.7 | |------|-----------------------------| | ✅ 使用 `str.format()` | ✔️ | | ✅ 使用 `OpenMaya2` | ✔️（Maya 2016+ 支持） | | ✅ 不使用 `f-string` | ✔️ | | ✅ 不使用 `print()` 函数 | ✔️（改用 `print ""`） | | ✅ 使用 `random.sample` | ✔️ | | ✅ 使用 `MGlobal.getActiveSelectionList()` | ✔️ | --- ## ✅