MetaFusion/scripts/utils/adjust_utils.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

#===================================== 1. Module Imports =====================================
import maya.cmds as cmds
import maya.mel as mel
import sys
import os

#===================================== 2. BlendShape Manager Class =====================================
class BlendShapeManager:
    """BlendShape管理器"""
    def __init__(self):
        self.main_bs = None  # 主要BlendShape节点
        self.related_bs = []  # 相关BlendShape节点
        self.current_weights = {}  # 当前权重缓存
        
    def set_main_blendshape(self, bs_node):
        """设置主要BlendShape节点"""
        if not cmds.objExists(bs_node):
            raise ValueError(f"BlendShape节点不存在: {bs_node}")
        self.main_bs = bs_node
        
    def add_related_blendshape(self, bs_node):
        """添加相关BlendShape节点"""
        if not cmds.objExists(bs_node):
            raise ValueError(f"BlendShape节点不存在: {bs_node}")
        if bs_node not in self.related_bs:
            self.related_bs.append(bs_node)
            
    def clear_related_blendshapes(self):
        """清空相关BlendShape节点"""
        self.related_bs = []
        
    def get_all_targets(self, bs_node):
        """获取BlendShape的所有目标"""
        if not cmds.objExists(bs_node):
            return []
            
        # 获取目标数量
        target_count = cmds.blendShape(bs_node, q=True, weightCount=True)
        targets = []
        
        # 获取每个目标的名称
        for i in range(target_count):
            alias = cmds.aliasAttr(f"{bs_node}.weight[{i}]", q=True)
            if alias:
                targets.append(alias)
                
        return targets
        
    def set_weight(self, bs_node, target, weight):
        """设置BlendShape权重"""
        if not cmds.objExists(bs_node):
            return False
            
        try:
            # 获取权重索引
            weight_index = -1
            target_count = cmds.blendShape(bs_node, q=True, weightCount=True)
            
            for i in range(target_count):
                alias = cmds.aliasAttr(f"{bs_node}.weight[{i}]", q=True)
                if alias == target:
                    weight_index = i
                    break
                    
            if weight_index >= 0:
                cmds.setAttr(f"{bs_node}.weight[{weight_index}]", weight)
                return True
                
        except Exception as e:
            cmds.warning(f"设置权重失败: {str(e)}")
            
        return False
        
    def get_weight(self, bs_node, target):
        """获取BlendShape权重"""
        if not cmds.objExists(bs_node):
            return 0.0
            
        try:
            # 获取权重索引
            weight_index = -1
            target_count = cmds.blendShape(bs_node, q=True, weightCount=True)
            
            for i in range(target_count):
                alias = cmds.aliasAttr(f"{bs_node}.weight[{i}]", q=True)
                if alias == target:
                    weight_index = i
                    break
                    
            if weight_index >= 0:
                return cmds.getAttr(f"{bs_node}.weight[{weight_index}]")
                
        except Exception as e:
            cmds.warning(f"获取权重失败: {str(e)}")
            
        return 0.0
        
    def store_weights(self):
        """存储当前权重"""
        self.current_weights = {}
        
        # 存储主要BlendShape权重
        if self.main_bs:
            self.current_weights[self.main_bs] = {}
            for target in self.get_all_targets(self.main_bs):
                self.current_weights[self.main_bs][target] = self.get_weight(self.main_bs, target)
                
        # 存储相关BlendShape权重
        for bs in self.related_bs:
            self.current_weights[bs] = {}
            for target in self.get_all_targets(bs):
                self.current_weights[bs][target] = self.get_weight(bs, target)
                
    def restore_weights(self):
        """还原存储的权重"""
        for bs, weights in self.current_weights.items():
            for target, weight in weights.items():
                self.set_weight(bs, target, weight)

# 全局BlendShape管理器实例
bs_manager = BlendShapeManager()

def reset_blendshapes():
    """重置所有BlendShape"""
    try:
        # 重置主要BlendShape
        if bs_manager.main_bs:
            for target in bs_manager.get_all_targets(bs_manager.main_bs):
                bs_manager.set_weight(bs_manager.main_bs, target, 0)
                
        # 重置相关BlendShape
        for bs in bs_manager.related_bs:
            for target in bs_manager.get_all_targets(bs):
                bs_manager.set_weight(bs, target, 0)
                
        print("BlendShape重置完成")
        
    except Exception as e:
        cmds.warning(f"重置BlendShape失败: {str(e)}")

def filter_blendshapes():
    """过滤BlendShape"""
    # TODO: 实现BlendShape过滤功能
    print("BlendShape过滤功能待实现")

def on_main_bs_selected(targets):
    """主要BlendShape选择变化"""
    try:
        # 存储当前权重
        bs_manager.store_weights()
        
        # 设置新的权重
        if bs_manager.main_bs:
            for target in targets:
                bs_manager.set_weight(bs_manager.main_bs, target, 1.0)
                
    except Exception as e:
        cmds.warning(f"设置BlendShape权重失败: {str(e)}")

def on_related_bs_selected(targets):
    """相关BlendShape选择变化"""
    try:
        # 存储当前权重
        bs_manager.store_weights()
        
        # 设置新的权重
        for bs in bs_manager.related_bs:
            for target in targets:
                bs_manager.set_weight(bs, target, 1.0)
                
    except Exception as e:
        cmds.warning(f"设置BlendShape权重失败: {str(e)}")

def set_bs_value(value):
    """设置BlendShape权重值"""
    try:
        # 设置主要BlendShape权重
        if bs_manager.main_bs:
            for target in bs_manager.get_all_targets(bs_manager.main_bs):
                bs_manager.set_weight(bs_manager.main_bs, target, value)
                
        # 设置相关BlendShape权重
        for bs in bs_manager.related_bs:
            for target in bs_manager.get_all_targets(bs):
                bs_manager.set_weight(bs, target, value)
                
    except Exception as e:
        cmds.warning(f"设置BlendShape权重值失败: {str(e)}")

def set_expr_value(value):
    """设置表情权重值"""
    try:
        # 获取当前选中的表情控制器
        sel = cmds.ls(sl=True)
        if not sel:
            return
            
        # 设置权重
        for ctrl in sel:
            if cmds.objExists(f"{ctrl}.weight"):
                cmds.setAttr(f"{ctrl}.weight", value)
                
    except Exception as e:
        cmds.warning(f"设置表情权重值失败: {str(e)}")

# 表情控制功能
def reset_expression():
    """还原默认表情"""
    try:
        # 还原存储的权重
        bs_manager.restore_weights()
        print("表情已还原")
        
    except Exception as e:
        cmds.warning(f"还原表情失败: {str(e)}")

def select_expression():
    """选择表情"""
    # TODO: 实现表情选择功能
    print("表情选择功能待实现")

def write_expression():
    """写入当前表情"""
    # TODO: 实现表情写入功能
    print("表情写入功能待实现")

def find_controller():
    """查找控制器"""
    # TODO: 实现控制器查找功能
    print("控制器查找功能待实现")

def select_joints():
    """选择关联关节"""
    # TODO: 实现关联关节选择功能
    print("关联关节选择功能待实现")

def write_mirror_expression():
    """写入镜像表情"""
    # TODO: 实现镜像表情写入功能
    print("镜像表情写入功能待实现")

def reset_expression():
    """恢复表情"""
    print("恢复表情功能待实现")

def blend_filter():
    """混合筛选"""
    print("混合筛选功能待实现")

def flip():
    """翻转"""
    print("翻转功能待实现")

def mirror_target():
    """镜像目标"""
    print("镜像目标功能待实现")

def find_flip_target():
    """查找翻转目标"""
    print("查找翻转目标功能待实现")

def add_blend_target():
    """添加混合目标"""
    print("添加混合目标功能待实现")

def delete_blend_target():
    """删除混合目标"""
    print("删除混合目标功能待实现")

def batch_blend_target():
    """批量混合目标"""
    print("批量混合目标功能待实现")

def rebuild_selected_target():
    """重建选择目标"""
    print("重建选择目标功能待实现")

def blend_selected_target():
    """混合选择目标"""
    print("混合选择目标功能待实现")

# 功能开关
def toggle_psd(checked):
    """PSD开关"""
    print(f"PSD功能{'开启' if checked else '关闭'}")

def toggle_bse(checked):
    """BSE开关"""
    print(f"BSE功能{'开启' if checked else '关闭'}")

def toggle_key(checked):
    """KEY开关"""
    print(f"KEY功能{'开启' if checked else '关闭'}")

def toggle_mir(checked):
    """MIR开关"""
    print(f"MIR功能{'开启' if checked else '关闭'}")

def toggle_ark(checked):
    """ARK开关"""
    print(f"ARK功能{'开启' if checked else '关闭'}")

def toggle_ctr(checked):
    """CTR开关"""
    print(f"CTR功能{'开启' if checked else '关闭'}")

# 底部功能按钮
def reset_default_expression():
    """还原默认表情"""
    print("还原默认表情功能待实现")

def find_control_panel():
    """查找控制面板"""
    print("查找控制面板功能待实现")

def select_related_joints():
    """选择关联关节"""
    print("选择关联关节功能待实现")

def write_mirror_expression():
    """写入镜像表情"""
    print("写入镜像表情功能待实现")

def mirror_blendshape(source_bs, target_bs, left_prefix="L_", right_prefix="R_"):
    """镜像BlendShape
    Args:
        source_bs: 源BlendShape节点
        target_bs: 目标BlendShape节点
        left_prefix: 左侧前缀
        right_prefix: 右侧前缀
    """
    try:
        # 获取源BlendShape的所有目标
        source_targets = bs_manager.get_all_targets(source_bs)
        
        for source_target in source_targets:
            # 获取镜像目标名称
            if source_target.startswith(left_prefix):
                mirror_target = source_target.replace(left_prefix, right_prefix)
            elif source_target.startswith(right_prefix):
                mirror_target = source_target.replace(right_prefix, left_prefix)
            else:
                continue
                
            # 获取源权重
            weight = bs_manager.get_weight(source_bs, source_target)
            
            # 设置镜像权重
            bs_manager.set_weight(target_bs, mirror_target, weight)
            
        print(f"BlendShape镜像完成: {source_bs} -> {target_bs}")
        
    except Exception as e:
        cmds.warning(f"BlendShape镜像失败: {str(e)}")

def find_mirror_target(target_name, left_prefix="L_", right_prefix="R_"):
    """查找镜像目标
    Args:
        target_name: 目标名称
        left_prefix: 左侧前缀
        right_prefix: 右侧前缀
    Returns:
        str: 镜像目标名称
    """
    if target_name.startswith(left_prefix):
        return target_name.replace(left_prefix, right_prefix)
    elif target_name.startswith(right_prefix):
        return target_name.replace(right_prefix, left_prefix)
    return ""

def create_blend_target(base_mesh, target_mesh, target_name):
    """创建混合目标
    Args:
        base_mesh: 基础模型
        target_mesh: 目标模型
        target_name: 目标名称
    Returns:
        str: 创建的BlendShape节点名称
    """
    try:
        # 检查模型是否存在
        if not all(cmds.objExists(obj) for obj in [base_mesh, target_mesh]):
            raise ValueError("模型不存在")
            
        # 创建BlendShape节点
        bs_node = cmds.blendShape(
            target_mesh,
            base_mesh,
            name=f"{base_mesh}_blendShape",
            frontOfChain=True
        )[0]
        
        # 重命名目标
        target_index = 0
        cmds.aliasAttr(target_name, f"{bs_node}.weight[{target_index}]")
        
        return bs_node
        
    except Exception as e:
        cmds.warning(f"创建混合目标失败: {str(e)}")
        return None

def batch_create_blend_targets(base_mesh, target_meshes, name_prefix=""):
    """批量创建混合目标
    Args:
        base_mesh: 基础模型
        target_meshes: 目标模型列表
        name_prefix: 名称前缀
    """
    try:
        # 创建BlendShape节点
        bs_node = cmds.blendShape(
            base_mesh,
            name=f"{base_mesh}_blendShape",
            frontOfChain=True
        )[0]
        
        # 添加目标
        for i, target in enumerate(target_meshes):
            target_name = f"{name_prefix}target_{i+1}"
            cmds.blendShape(bs_node, edit=True, target=(base_mesh, i, target, 1.0))
            cmds.aliasAttr(target_name, f"{bs_node}.weight[{i}]")
            
        print(f"批量创建混合目标完成: {bs_node}")
        return bs_node
        
    except Exception as e:
        cmds.warning(f"批量创建混合目标失败: {str(e)}")
        return None

def rebuild_blend_target(bs_node, target_name):
    """重建混合目标
    Args:
        bs_node: BlendShape节点
        target_name: 目标名称
    """
    try:
        # 获取基础模型
        base_mesh = cmds.blendShape(bs_node, q=True, geometry=True)[0]
        
        # 获取目标索引
        target_index = -1
        target_count = cmds.blendShape(bs_node, q=True, weightCount=True)
        
        for i in range(target_count):
            alias = cmds.aliasAttr(f"{bs_node}.weight[{i}]", q=True)
            if alias == target_name:
                target_index = i
                break
                
        if target_index < 0:
            raise ValueError(f"找不到目标: {target_name}")
            
        # 提取目标形状
        target_mesh = cmds.duplicate(base_mesh, name=f"{target_name}_rebuild")[0]
        cmds.setAttr(f"{bs_node}.weight[{target_index}]", 1)
        cmds.delete(target_mesh, constructionHistory=True)
        
        # 重建目标
        cmds.blendShape(bs_node, edit=True, remove=True, target=(base_mesh, target_index, target_name, 1.0))
        cmds.blendShape(bs_node, edit=True, target=(base_mesh, target_index, target_mesh, 1.0))
        
        # 清理
        cmds.delete(target_mesh)
        print(f"重建混合目标完成: {target_name}")
        
    except Exception as e:
        cmds.warning(f"重建混合目标失败: {str(e)}")

def blend_selected_targets(bs_node, targets, weight=1.0):
    """混合选中的目标
    Args:
        bs_node: BlendShape节点
        targets: 目标名称列表
        weight: 混合权重
    """
    try:
        # 重置所有权重
        all_targets = bs_manager.get_all_targets(bs_node)
        for target in all_targets:
            bs_manager.set_weight(bs_node, target, 0)
            
        # 设置选中目标的权重
        for target in targets:
            bs_manager.set_weight(bs_node, target, weight)
            
        print(f"混合目标完成: {targets}")
        
    except Exception as e:
        cmds.warning(f"混合目标失败: {str(e)}")

def create_corrective_blend(base_mesh, pose_mesh, corrective_mesh, pose_attrs):
    """创建修正混合变形
    Args:
        base_mesh: 基础模型
        pose_mesh: 姿势模型
        corrective_mesh: 修正模型
        pose_attrs: 姿势属性列表 [(attr, value), ...]
    """
    try:
        # 创建BlendShape节点
        bs_node = cmds.blendShape(
            [pose_mesh, corrective_mesh],
            base_mesh,
            name=f"{base_mesh}_corrective",
            frontOfChain=True
        )[0]
        
        # 设置驱动关系
        for attr, value in pose_attrs:
            # 创建条件节点
            cond = cmds.createNode("condition", name=f"{bs_node}_cond")
            cmds.setAttr(f"{cond}.operation", 2)  # Greater Than
            cmds.setAttr(f"{cond}.secondTerm", value)
            
            # 连接属性
            cmds.connectAttr(attr, f"{cond}.firstTerm")
            cmds.connectAttr(f"{cond}.outColorR", f"{bs_node}.weight[1]")
            
        print(f"创建修正混合变形完成: {bs_node}")
        return bs_node
        
    except Exception as e:
        cmds.warning(f"创建修正混合变形失败: {str(e)}")
        return None

def create_expression_set(name, targets, base_mesh=None):
    """创建表情集
    Args:
        name: 表情集名称
        targets: 目标列表 [(target_name, weight), ...]
        base_mesh: 基础模型(可选)
    Returns:
        str: 创建的表情集节点名称
    """
    try:
        # 创建表情集节点
        expr_set = cmds.createNode("objectSet", name=f"{name}_exprSet")
        
        # 添加自定义属性
        cmds.addAttr(expr_set, ln="weight", at="double", min=0, max=1, dv=0)
        cmds.setAttr(f"{expr_set}.weight", e=True, keyable=True)
        
        # 添加目标信息
        cmds.addAttr(expr_set, ln="targets", dt="string")
        target_data = ";".join([f"{t}:{w}" for t, w in targets])
        cmds.setAttr(f"{expr_set}.targets", target_data, type="string")
        
        # 添加基础模型
        if base_mesh:
            cmds.addAttr(expr_set, ln="baseMesh", dt="string")
            cmds.setAttr(f"{expr_set}.baseMesh", base_mesh, type="string")
            
        return expr_set
        
    except Exception as e:
        cmds.warning(f"创建表情集失败: {str(e)}")
        return None

def apply_expression_set(expr_set, weight=None):
    """应用表情集
    Args:
        expr_set: 表情集节点
        weight: 权重值(可选)
    """
    try:
        # 获取目标信息
        target_data = cmds.getAttr(f"{expr_set}.targets")
        targets = []
        for item in target_data.split(";"):
            name, value = item.split(":")
            targets.append((name, float(value)))
            
        # 获取权重
        if weight is None:
            weight = cmds.getAttr(f"{expr_set}.weight")
            
        # 应用权重
        for target_name, target_weight in targets:
            bs_node = target_name.split(".")[0]
            bs_manager.set_weight(bs_node, target_name, target_weight * weight)
            
    except Exception as e:
        cmds.warning(f"应用表情集失败: {str(e)}")

def create_mirror_expression(expr_set, left_prefix="L_", right_prefix="R_"):
    """创建镜像表情
    Args:
        expr_set: 源表情集节点
        left_prefix: 左侧前缀
        right_prefix: 右侧前缀
    Returns:
        str: 创建的镜像表情集节点名称
    """
    try:
        # 获取源表情信息
        target_data = cmds.getAttr(f"{expr_set}.targets")
        source_targets = []
        for item in target_data.split(";"):
            name, value = item.split(":")
            source_targets.append((name, float(value)))
            
        # 创建镜像目标
        mirror_targets = []
        for target_name, weight in source_targets:
            mirror_name = find_mirror_target(target_name, left_prefix, right_prefix)
            if mirror_name:
                mirror_targets.append((mirror_name, weight))
                
        # 创建镜像表情集
        name = cmds.getAttr(f"{expr_set}.name")
        mirror_name = f"{name}_mirror"
        if cmds.objExists(f"{expr_set}.baseMesh"):
            base_mesh = cmds.getAttr(f"{expr_set}.baseMesh")
        else:
            base_mesh = None
            
        return create_expression_set(mirror_name, mirror_targets, base_mesh)
        
    except Exception as e:
        cmds.warning(f"创建镜像表情失败: {str(e)}")
        return None

def optimize_weights(bs_node, threshold=0.001):
    """优化权重
    Args:
        bs_node: BlendShape节点
        threshold: 权重阈值
    """
    try:
        # 获取所有目标
        targets = bs_manager.get_all_targets(bs_node)
        
        # 检查每个目标的权重
        for target in targets:
            weight = bs_manager.get_weight(bs_node, target)
            
            # 移除小权重
            if abs(weight) < threshold:
                bs_manager.set_weight(bs_node, target, 0)
                
            # 规范化权重
            elif abs(weight - 1.0) < threshold:
                bs_manager.set_weight(bs_node, target, 1.0)
                
        print(f"权重优化完成: {bs_node}")
        
    except Exception as e:
        cmds.warning(f"权重优化失败: {str(e)}")

def create_weight_driver(bs_node, target, driver_attr):
    """创建权重驱动器
    Args:
        bs_node: BlendShape节点
        target: 目标名称
        driver_attr: 驱动属性
    """
    try:
        # 创建条件节点
        cond = cmds.createNode("condition", name=f"{target}_cond")
        cmds.setAttr(f"{cond}.operation", 2)  # Greater Than
        cmds.setAttr(f"{cond}.secondTerm", 0)
        
        # 连接驱动属性
        cmds.connectAttr(driver_attr, f"{cond}.firstTerm")
        
        # 获取目标索引
        target_index = -1
        target_count = cmds.blendShape(bs_node, q=True, weightCount=True)
        for i in range(target_count):
            alias = cmds.aliasAttr(f"{bs_node}.weight[{i}]", q=True)
            if alias == target:
                target_index = i
                break
                
        if target_index >= 0:
            # 连接权重
            cmds.connectAttr(f"{cond}.outColorR", f"{bs_node}.weight[{target_index}]")
            print(f"创建权重驱动器完成: {target}")
            return cond
            
    except Exception as e:
        cmds.warning(f"创建权重驱动器失败: {str(e)}")
        return None

def create_expression_group(name, expressions):
    """创建表情组
    Args:
        name: 组名称
        expressions: 表情集列表 [(expr_name, weight), ...]
    Returns:
        str: 创建的表情组节点名称
    """
    try:
        # 创建组节点
        group = cmds.createNode("objectSet", name=f"{name}_exprGroup")
        
        # 添加表情集信息
        cmds.addAttr(group, ln="expressions", dt="string")
        expr_data = ";".join([f"{e}:{w}" for e, w in expressions])
        cmds.setAttr(f"{group}.expressions", expr_data, type="string")
        
        return group
        
    except Exception as e:
        cmds.warning(f"创建表情组失败: {str(e)}")
        return None

def create_expression_controller(name, attributes):
    """创建表情控制器
    Args:
        name: 控制器名称
        attributes: 属性列表 [(attr_name, min_val, max_val, default), ...]
    Returns:
        str: 创建的控制器名称
    """
    try:
        # 创建控制器
        ctrl = cmds.circle(name=f"{name}_ctrl", normal=(0, 1, 0))[0]
        
        # 添加属性
        for attr_name, min_val, max_val, default in attributes:
            cmds.addAttr(ctrl, ln=attr_name, at="double", 
                min=min_val, max=max_val, dv=default)
            cmds.setAttr(f"{ctrl}.{attr_name}", e=True, keyable=True)
            
        return ctrl
        
    except Exception as e:
        cmds.warning(f"创建表情控制器失败: {str(e)}")
        return None

def create_expression_driver(source_attr, target_attrs, remap=False):
    """创建表情驱动器
    Args:
        source_attr: 源属性
        target_attrs: 目标属性列表 [(attr, value), ...]
        remap: 是否重映射值
    """
    try:
        for target_attr, target_value in target_attrs:
            if remap:
                # 创建重映射节点
                remap_node = cmds.createNode("remapValue")
                cmds.connectAttr(source_attr, f"{remap_node}.inputValue")
                cmds.connectAttr(f"{remap_node}.outValue", target_attr)
                
                # 设置映射值
                cmds.setAttr(f"{remap_node}.value[0].value_Position", 0)
                cmds.setAttr(f"{remap_node}.value[0].value_FloatValue", 0)
                cmds.setAttr(f"{remap_node}.value[1].value_Position", 1)
                cmds.setAttr(f"{remap_node}.value[1].value_FloatValue", target_value)
            else:
                # 直接连接
                cmds.connectAttr(source_attr, target_attr)
                
        print(f"创建表情驱动器完成: {source_attr}")
        
    except Exception as e:
        cmds.warning(f"创建表情驱动器失败: {str(e)}")

def create_expression_pose(name, targets, mirror=False):
    """创建表情姿势
    Args:
        name: 姿势名称
        targets: 目标列表 [(node, attr, value), ...]
        mirror: 是否创建镜像姿势
    Returns:
        str: 创建的姿势节点名称
    """
    try:
        # 创建姿势节点
        pose = cmds.createNode("objectSet", name=f"{name}_pose")
        
        # 添加目标信息
        cmds.addAttr(pose, ln="targets", dt="string")
        target_data = ";".join([f"{n}.{a}:{v}" for n, a, v in targets])
        cmds.setAttr(f"{pose}.targets", target_data, type="string")
        
        if mirror:
            # 创建镜像姿势
            mirror_targets = []
            for node, attr, value in targets:
                if "_L_" in node:
                    mirror_node = node.replace("_L_", "_R_")
                elif "_R_" in node:
                    mirror_node = node.replace("_R_", "_L_")
                else:
                    continue
                mirror_targets.append((mirror_node, attr, value))
                
            if mirror_targets:
                create_expression_pose(f"{name}_mirror", mirror_targets)
                
        return pose
        
    except Exception as e:
        cmds.warning(f"创建表情姿势失败: {str(e)}")
        return None

def apply_expression_pose(pose, weight=1.0):
    """应用表情姿势
    Args:
        pose: 姿势节点
        weight: 应用权重
    """
    try:
        # 获取目标信息
        target_data = cmds.getAttr(f"{pose}.targets")
        for item in target_data.split(";"):
            attr_path, value = item.split(":")
            node, attr = attr_path.split(".")
            
            if cmds.objExists(attr_path):
                current = cmds.getAttr(attr_path)
                target = float(value)
                blend = current + (target - current) * weight
                cmds.setAttr(attr_path, blend)
                
    except Exception as e:
        cmds.warning(f"应用表情姿势失败: {str(e)}")

def create_expression_sequence(name, poses, times):
    """创建表情序列
    Args:
        name: 序列名称
        poses: 姿势列表
        times: 时间列表
    Returns:
        str: 创建的序列节点名称
    """
    try:
        # 创建序列节点
        sequence = cmds.createNode("objectSet", name=f"{name}_sequence")
        
        # 添加序列信息
        cmds.addAttr(sequence, ln="poses", dt="string")
        pose_data = ";".join([f"{p}:{t}" for p, t in zip(poses, times)])
        cmds.setAttr(f"{sequence}.poses", pose_data, type="string")
        
        return sequence
        
    except Exception as e:
        cmds.warning(f"创建表情序列失败: {str(e)}")
        return None

def play_expression_sequence(sequence):
    """播放表情序列
    Args:
        sequence: 序列节点
    """
    try:
        # 获取序列信息
        pose_data = cmds.getAttr(f"{sequence}.poses")
        for item in pose_data.split(";"):
            pose, time = item.split(":")
            # 设置时间
            cmds.currentTime(float(time))
            # 应用姿势
            apply_expression_pose(pose)
            
    except Exception as e:
        cmds.warning(f"播放表情序列失败: {str(e)}")

def create_weight_editor(bs_node):
    """创建权重编辑器
    Args:
        bs_node: BlendShape节点
    Returns:
        str: 创建的编辑器节点名称
    """
    try:
        # 创建编辑器节点
        editor = cmds.createNode("objectSet", name=f"{bs_node}_weightEditor")
        
        # 添加编辑器信息
        cmds.addAttr(editor, ln="blendShape", dt="string")
        cmds.setAttr(f"{editor}.blendShape", bs_node, type="string")
        
        # 获取所有目标
        targets = bs_manager.get_all_targets(bs_node)
        
        # 添加目标权重属性
        for target in targets:
            cmds.addAttr(editor, ln=target, at="double", min=0, max=1, dv=0)
            cmds.setAttr(f"{editor}.{target}", e=True, keyable=True)
            
            # 连接权重
            weight = bs_manager.get_weight(bs_node, target)
            cmds.setAttr(f"{editor}.{target}", weight)
            
        return editor
        
    except Exception as e:
        cmds.warning(f"创建权重编辑器失败: {str(e)}")
        return None

def create_expression_preview(expr_set):
    """创建表情预览
    Args:
        expr_set: 表情集节点
    Returns:
        str: 创建的预览节点名称
    """
    try:
        # 创建预览节点
        preview = cmds.createNode("objectSet", name=f"{expr_set}_preview")
        
        # 添加预览信息
        cmds.addAttr(preview, ln="expression", dt="string")
        cmds.setAttr(f"{preview}.expression", expr_set, type="string")
        
        # 添加预览控制
        cmds.addAttr(preview, ln="weight", at="double", min=0, max=1, dv=0)
        cmds.setAttr(f"{preview}.weight", e=True, keyable=True)
        
        # 添加时间控制
        cmds.addAttr(preview, ln="time", at="time")
        cmds.setAttr(f"{preview}.time", e=True, keyable=True)
        
        # 添加播放控制
        cmds.addAttr(preview, ln="play", at="bool")
        cmds.setAttr(f"{preview}.play", e=True, keyable=True)
        
        return preview
        
    except Exception as e:
        cmds.warning(f"创建表情预览失败: {str(e)}")
        return None

def update_weight_editor(editor):
    """更新权重编辑器
    Args:
        editor: 编辑器节点
    """
    try:
        # 获取BlendShape节点
        bs_node = cmds.getAttr(f"{editor}.blendShape")
        
        # 获取所有目标
        targets = bs_manager.get_all_targets(bs_node)
        
        # 更新权重
        for target in targets:
            if cmds.objExists(f"{editor}.{target}"):
                weight = bs_manager.get_weight(bs_node, target)
                cmds.setAttr(f"{editor}.{target}", weight)
                
    except Exception as e:
        cmds.warning(f"更新权重编辑器失败: {str(e)}")

def update_expression_preview(preview):
    """更新表情预览
    Args:
        preview: 预览节点
    """
    try:
        # 获取表情集
        expr_set = cmds.getAttr(f"{preview}.expression")
        
        # 获取预览权重
        weight = cmds.getAttr(f"{preview}.weight")
        
        # 应用表情
        apply_expression_set(expr_set, weight)
        
        # 检查播放状态
        if cmds.getAttr(f"{preview}.play"):
            # 更新时间
            current_time = cmds.getAttr(f"{preview}.time")
            cmds.setAttr(f"{preview}.time", current_time + 1)
            
            # 循环播放
            if current_time >= cmds.playbackOptions(q=True, maxTime=True):
                cmds.setAttr(f"{preview}.time", cmds.playbackOptions(q=True, minTime=True))
                
    except Exception as e:
        cmds.warning(f"更新表情预览失败: {str(e)}")

def create_weight_curve(bs_node, target):
    """创建权重曲线
    Args:
        bs_node: BlendShape节点
        target: 目标名称
    Returns:
        str: 创建的动画曲线节点名称
    """
    try:
        # 创建动画曲线
        curve = cmds.createNode("animCurve", name=f"{target}_weightCurve")
        
        # 设置曲线类型
        cmds.setAttr(f"{curve}.preInfinity", 1)  # Cycle
        cmds.setAttr(f"{curve}.postInfinity", 1)  # Cycle
        
        # 添加关键帧
        cmds.setKeyframe(curve, time=0, value=0)
        cmds.setKeyframe(curve, time=12, value=1)
        cmds.setKeyframe(curve, time=24, value=0)
        
        # 设置切线类型
        cmds.keyTangent(curve, edit=True, time=(0,24), outTangentType="linear")
        cmds.keyTangent(curve, edit=True, time=(0,24), inTangentType="linear")
        
        return curve
        
    except Exception as e:
        cmds.warning(f"创建权重曲线失败: {str(e)}")
        return None

def apply_weight_curve(curve, bs_node, target):
    """应用权重曲线
    Args:
        curve: 动画曲线节点
        bs_node: BlendShape节点
        target: 目标名称
    """
    try:
        # 获取当前时间
        current_time = cmds.currentTime(q=True)
        
        # 获取曲线值
        weight = cmds.getValue(curve, time=current_time)
        
        # 设置权重
        bs_manager.set_weight(bs_node, target, weight)
        
    except Exception as e:
        cmds.warning(f"应用权重曲线失败: {str(e)}")

def create_expression_combination(name, expressions, weights=None):
    """创建表情组合
    Args:
        name: 组合名称
        expressions: 表情集列表
        weights: 权重列表(可选)
    Returns:
        str: 创建的组合节点名称
    """
    try:
        # 创建组合节点
        combo = cmds.createNode("objectSet", name=f"{name}_exprCombo")
        
        # 添加组合信息
        cmds.addAttr(combo, ln="expressions", dt="string")
        if weights:
            expr_data = ";".join([f"{e}:{w}" for e, w in zip(expressions, weights)])
        else:
            expr_data = ";".join([f"{e}:1.0" for e in expressions])
        cmds.setAttr(f"{combo}.expressions", expr_data, type="string")
        
        # 添加总权重控制
        cmds.addAttr(combo, ln="weight", at="double", min=0, max=1, dv=1)
        cmds.setAttr(f"{combo}.weight", e=True, keyable=True)
        
        return combo
        
    except Exception as e:
        cmds.warning(f"创建表情组合失败: {str(e)}")
        return None

def apply_expression_combination(combo, weight=None):
    """应用表情组合
    Args:
        combo: 组合节点
        weight: 总权重(可选)
    """
    try:
        # 获取组合信息
        expr_data = cmds.getAttr(f"{combo}.expressions")
        
        # 获取总权重
        if weight is None:
            weight = cmds.getAttr(f"{combo}.weight")
            
        # 应用每个表情
        for item in expr_data.split(";"):
            expr_set, expr_weight = item.split(":")
            apply_expression_set(expr_set, float(expr_weight) * weight)
            
    except Exception as e:
        cmds.warning(f"应用表情组合失败: {str(e)}")

def optimize_blendshape_weights(bs_node, options=None):
    """优化BlendShape权重
    Args:
        bs_node: BlendShape节点
        options: 优化选项字典
    """
    try:
        if options is None:
            options = {
                "threshold": 0.001,  # 权重阈值
                "normalize": True,   # 是否规范化
                "remove_unused": True,  # 是否移除未使用的目标
                "clean_history": True   # 是否清理历史
            }
            
        # 获取所有目标
        targets = bs_manager.get_all_targets(bs_node)
        
        # 移除未使用的目标
        if options["remove_unused"]:
            for target in targets:
                weight = bs_manager.get_weight(bs_node, target)
                if abs(weight) < options["threshold"]:
                    # 获取目标索引
                    target_index = -1
                    target_count = cmds.blendShape(bs_node, q=True, weightCount=True)
                    for i in range(target_count):
                        alias = cmds.aliasAttr(f"{bs_node}.weight[{i}]", q=True)
                        if alias == target:
                            target_index = i
                            break
                            
                    if target_index >= 0:
                        # 移除目标
                        base_mesh = cmds.blendShape(bs_node, q=True, geometry=True)[0]
                        cmds.blendShape(bs_node, edit=True, remove=True, 
                            target=(base_mesh, target_index, target, 1.0))
                            
        # 规范化权重
        if options["normalize"]:
            for target in targets:
                weight = bs_manager.get_weight(bs_node, target)
                if abs(weight) > options["threshold"]:
                    if abs(weight - 1.0) < options["threshold"]:
                        bs_manager.set_weight(bs_node, target, 1.0)
                    elif abs(weight) < options["threshold"]:
                        bs_manager.set_weight(bs_node, target, 0.0)
                    else:
                        normalized = round(weight, 3)
                        bs_manager.set_weight(bs_node, target, normalized)
                        
        # 清理历史
        if options["clean_history"]:
            base_mesh = cmds.blendShape(bs_node, q=True, geometry=True)[0]
            cmds.delete(base_mesh, constructionHistory=True)
            
        print(f"权重优化完成: {bs_node}")
        
    except Exception as e:
        cmds.warning(f"权重优化失败: {str(e)}")

def analyze_blendshape_weights(bs_node):
    """分析BlendShape权重
    Args:
        bs_node: BlendShape节点
    Returns:
        dict: 分析结果
    """
    try:
        results = {
            "total_targets": 0,
            "active_targets": 0,
            "unused_targets": 0,
            "full_weight_targets": 0,
            "partial_weight_targets": 0,
            "weight_distribution": {}
        }
        
        # 获取所有目标
        targets = bs_manager.get_all_targets(bs_node)
        results["total_targets"] = len(targets)
        
        # 分析每个目标
        for target in targets:
            weight = bs_manager.get_weight(bs_node, target)
            
            # 统计权重分布
            weight_range = round(weight * 10) / 10  # 取一位小数
            if weight_range in results["weight_distribution"]:
                results["weight_distribution"][weight_range] += 1
            else:
                results["weight_distribution"][weight_range] = 1
                
            # 统计目标类型
            if abs(weight) < 0.001:
                results["unused_targets"] += 1
            elif abs(weight - 1.0) < 0.001:
                results["full_weight_targets"] += 1
                results["active_targets"] += 1
            elif abs(weight) > 0.001:
                results["partial_weight_targets"] += 1
                results["active_targets"] += 1
                
        return results
        
    except Exception as e:
        cmds.warning(f"分析权重失败: {str(e)}")
        return None