101 lines
3.6 KiB
Python
101 lines
3.6 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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import maya.cmds as cmds
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from Core import GetMeshes
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def del_blend_shape(mesh_index, in_tgt_grp):
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"""
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删除指定网格的混合变形目标组
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参数:
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mesh_index (int): 网格索引
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in_tgt_grp (int): 目标组索引
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"""
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# 获取混合变形节点名称
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bsn = f"{GetMeshes(i=mesh_index)}_blendShapes"
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# 检查节点是否存在
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if not cmds.objExists(bsn):
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return
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# 检查目标组是否被锁定
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weight_attr = f"{bsn}.weight[{in_tgt_grp}]"
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if cmds.getAttr(weight_attr, lock=True):
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cmds.warning(f"There is no such attribute: {weight_attr}")
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return
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# 移除组合变形（如果存在）
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source = cmds.connectionInfo(f"{bsn}.w[{in_tgt_grp}]", sourceFromDestination=True)
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if source:
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source_parts = source.split('.')
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if len(source_parts) == 2:
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if cmds.nodeType(source_parts[0]) == "combinationShape":
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cmds.delete(source_parts[0])
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# 处理父目录关系
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parent_dir_attr = f"{bsn}.parentDirectory[{in_tgt_grp}]"
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parent_directory = cmds.getAttr(parent_dir_attr)
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if parent_directory > 0:
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child_indices_attr = f"{bsn}.targetDirectory[{parent_directory}].childIndices"
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child_indices = cmds.getAttr(child_indices_attr)
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try:
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location = child_indices.index(in_tgt_grp)
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if location + 1 < len(child_indices):
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next_target_attr = f"{bsn}.nextTarget[{in_tgt_grp}]"
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cmds.setAttr(next_target_attr, child_indices[location + 1])
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except ValueError:
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pass
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# 移除权重数组中的元素
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attrs_to_remove = [
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f"{bsn}.weight[{in_tgt_grp}]",
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f"{bsn}.parentDirectory[{in_tgt_grp}]",
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f"{bsn}.nextTarget[{in_tgt_grp}]",
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f"{bsn}.targetVisibility[{in_tgt_grp}]",
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f"{bsn}.targetParentVisibility[{in_tgt_grp}]"
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]
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for attr in attrs_to_remove:
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cmds.removeMultiInstance(attr, b=True)
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# 处理输入目标
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input_target_attr = f"{bsn}.inputTarget"
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input_target_indices = cmds.getAttr(input_target_attr, multiIndices=True) or []
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# 检查是否需要重置
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needs_reset = False
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for index in input_target_indices:
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target_index_attr = f"{bsn}.inputTarget[{index}].sculptTargetIndex"
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if cmds.getAttr(target_index_attr) == in_tgt_grp:
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needs_reset = True
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break
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# 如果需要重置，设置雕刻目标为-1
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if needs_reset:
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cmds.sculptTarget(bsn, e=True, target=-1)
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# 处理每个输入目标
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for index in input_target_indices:
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# 移除目标组内的每个输入目标项
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item_attr = f"{bsn}.inputTarget[{index}].inputTargetGroup[{in_tgt_grp}].inputTargetItem"
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item_indices = cmds.getAttr(item_attr, multiIndices=True) or []
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for item_index in item_indices:
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cmds.blendShapeDeleteInBetweenTarget(bsn, in_tgt_grp, item_index)
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# 移除目标组内的每个目标权重
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weights_attr = f"{bsn}.inputTarget[{index}].inputTargetGroup[{in_tgt_grp}].targetWeights"
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cmds.removeMultiInstance(weights_attr, b=True, allChildren=True)
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# 移除整个目标组
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group_attr = f"{bsn}.inputTarget[{index}].inputTargetGroup[{in_tgt_grp}]"
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cmds.removeMultiInstance(group_attr, b=True)
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# 移除别名（如果存在）
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weight_attr = f"{bsn}.weight[{in_tgt_grp}]"
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alias = cmds.aliasAttr(weight_attr, query=True)
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if alias:
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cmds.aliasAttr(f"{bsn}.{alias}", remove=True) |