442 lines
14 KiB
Python
442 lines
14 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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# ----------------------------------------------------------------------------------------------
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#
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# extractDeltas.py
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# v1.4
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#
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# 从变形的蒙皮网格中提取建模的修正形状
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#
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# 原始 c++ extract deltas 插件作者：James Jacobs
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#
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# Python 转换、改进和维护：Ingo Clemens
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# www.braverabbit.com
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#
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# brave rabbit, Ingo Clemens 2014
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#
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# 版本历史：
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#
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# 1.4 - 包含了 mel 脚本
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# 1.3 - 改进了形状比较，无需使用混合变形
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# 1.2 - 添加了顶点列表标志，仅在给定的组件列表上工作
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# 1.1 - 优化了性能，因为现在只对雕刻的点进行处理
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# (0.06 - c++ 版本, 1.88 - 1.0版本, 0.14 - 1.1版本)
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# 1.0 - 初始 Python 转换
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#
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# ----------------------------------------------------------------------------------------------
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# ----------------------------------------------------------------------------------------------
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#
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# 本程序是自由软件；您可以根据自由软件基金会发布的 GNU 通用公共许可证
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# 第2版或（您可以选择）任何更新版本的条款重新发布和/或修改它。
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#
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# 本程序的发布是希望它能有用，但不提供任何保证；甚至没有
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# 适销性或特定用途适用性的暗示保证。详情请参阅
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# GNU 通用公共许可证。
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#
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# ----------------------------------------------------------------------------------------------
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# ----------------------------------------------------------------------------------------------
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#
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# 使用和修改需自行承担风险！！
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#
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# ----------------------------------------------------------------------------------------------
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import maya.OpenMaya as OpenMaya
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import maya.OpenMayaMPx as OpenMayaMPx
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import maya.cmds as cmds
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from maya.mel import eval as meval
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import re
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import sys
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kPluginCmdName = 'extractDeltas'
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# --------------------------------------------------------------------------------
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# 参数标志
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# --------------------------------------------------------------------------------
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helpFlag = '-h'
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helpFlagLong = '-help'
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skinFlag = '-s'
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skinFlagLong = '-skin'
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correctiveFlag = '-c'
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correctiveFlagLong = '-corrective'
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vertexListFlag = '-vl'
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vertexListFlagLong = '-vertexList'
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helpText = ''
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helpText += '\n Description: Extract a modeled corrective shape from a deformed skinned mesh.'
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helpText += '\n'
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helpText += '\n Flags: extractDeltas -h -help <n/a> this message'
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helpText += '\n -s -skin <string> the name of the skinned mesh'
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helpText += '\n -c -corrective <string> the name of the sculpted shape'
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helpText += '\n -vl -vertexList <string> optional list of vertices, comma separated string'
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helpText += '\n Usage: Execute the command with the following arguments:'
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helpText += '\n Execute: extractDeltas -s <mesh with skin cluster> -c <corrective mesh name>'
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# --------------------------------------------------------------------------------
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# 主命令
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# --------------------------------------------------------------------------------
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class extractDeltas(OpenMayaMPx.MPxCommand):
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def __init__(self):
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OpenMayaMPx.MPxCommand.__init__(self)
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def doIt(self, args):
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self.dagModifier = OpenMaya.MDagModifier()
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skinName = ''
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correctiveName = ''
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resultName = ''
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listString = ''
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# --------------------------------------------------------------------------------
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# 解析参数
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# --------------------------------------------------------------------------------
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argData = OpenMaya.MArgDatabase(self.syntax(), args)
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# 帮助标志
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if argData.isFlagSet(helpFlag):
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self.setResult(helpText)
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return
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# 皮肤标志
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if argData.isFlagSet(skinFlag):
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skinName = argData.flagArgumentString(skinFlag, 0)
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# 修正标志
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if argData.isFlagSet(correctiveFlag):
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correctiveName = argData.flagArgumentString(correctiveFlag, 0)
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# 顶点列表标志
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if argData.isFlagSet(vertexListFlag):
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listString = argData.flagArgumentString(vertexListFlag, 0)
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# --------------------------------------------------------------------------------
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# 检查选择
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# --------------------------------------------------------------------------------
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sel = []
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if skinName != '' and correctiveName != '':
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sel.append(skinName)
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sel.append(correctiveName)
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else:
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sel = cmds.ls(sl = True, tr = True)
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shapeList = []
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for i in range(len(sel)):
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shapes = cmds.listRelatives(sel[i], s = True)
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if shapes == None:
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OpenMaya.MGlobal.displayError(sel[i] + ' 没有形状节点。')
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return
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if cmds.nodeType(shapes[0]) != 'mesh':
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OpenMaya.MGlobal.displayError(shapes[0] + ' 不是一个网格对象。')
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return
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elif i == 0 and len(shapes) > 1:
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skin = cmds.listConnections(shapes[0], type = 'skinCluster')
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if skin == None:
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OpenMaya.MGlobal.displayError(shapes[0] + ' 没有绑定到皮肤簇。')
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return
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if cmds.getAttr(shapes[1] + '.intermediateObject'):
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shapeList.append(shapes[1])
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else:
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OpenMaya.MGlobal.displayError(shapes[1] + ' 不是一个中间/原始形状节点。')
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return
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shapeList.append(shapes[0])
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if len(shapeList) != 3:
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OpenMaya.MGlobal.displayError('选择一个带有有效原始形状节点和目标网格对象的蒙皮网格。')
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return
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selList = OpenMaya.MSelectionList()
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for sl in shapeList:
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selList.add(sl)
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intermediateObj = OpenMaya.MObject()
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skinObj = OpenMaya.MObject()
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targetObj = OpenMaya.MObject()
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selList.getDependNode(0, intermediateObj)
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selList.getDependNode(1, skinObj)
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selList.getDependNode(2, targetObj)
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# --------------------------------------------------------------------------------
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# 定义网格函数并获取点
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# --------------------------------------------------------------------------------
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skinFn = OpenMaya.MFnMesh()
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skinFn.setObject(skinObj)
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targetFn = OpenMaya.MFnMesh()
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targetFn.setObject(targetObj)
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intermediateFn = OpenMaya.MFnMesh()
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intermediateFn.setObject(intermediateObj)
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skinPoints = OpenMaya.MPointArray()
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skinFn.getPoints(skinPoints)
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targetPoints = OpenMaya.MPointArray()
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targetFn.getPoints(targetPoints)
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intermediatePoints = OpenMaya.MPointArray()
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intermediateFn.getPoints(intermediatePoints)
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extractPoints = OpenMaya.MPointArray(intermediatePoints)
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# --------------------------------------------------------------------------------
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# 通过临时 blendShape 节点获取 delta 点
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# --------------------------------------------------------------------------------
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pointList = []
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for i in range(0, skinPoints.length()):
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if skinPoints[i] != targetPoints[i]:
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pointList.append(i)
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if len(pointList) == 0:
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OpenMaya.MGlobal.displayError('没有形状提取。两个网格相同。')
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return
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# 创建 delta 点与给定顶点列表之间的交集列表
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vList = []
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if listString != '':
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array = listString.split(',')
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array = map(int, array)
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intersectList = list(set(pointList) & set(array))
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pointList = intersectList
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# --------------------------------------------------------------------------------
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# 复制原始网格
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# --------------------------------------------------------------------------------
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resultFn = OpenMaya.MFnMesh()
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resultObj = OpenMaya.MObject()
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# 使用 API 函数复制网格，但不容易撤消
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# resultObj = resultFn.copy(intermediateObj, OpenMaya.cvar.MObject_kNullObj)
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# 通过 Maya 命令复制网格有点复杂
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# 但撤消是免费的
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resultMesh = cmds.duplicate(shapeList[0], rc = True)
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shapes = cmds.listRelatives(resultMesh, s = True)
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# 删除主形状节点并禁用中间对象
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cmds.delete(shapes[0])
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cmds.setAttr(shapes[1] + '.intermediateObject', 0)
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cmds.rename(shapes[1], shapes[0])
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attrList = ['tx', 'ty', 'tz', 'rx', 'ry', 'rz', 'sx', 'sy', 'sz']
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for a in attrList:
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cmds.setAttr(resultMesh[0] + '.' + a, l = False)
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selList.clear()
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selList.add(shapes[0])
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selList.getDependNode(0, resultObj)
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resultFn.setObject(resultObj)
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resultPoints = OpenMaya.MPointArray()
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resultFn.getPoints(resultPoints)
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# --------------------------------------------------------------------------------
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# 通过首先对原始网格进行预扰动，然后在蒙皮网格上构建坐标空间来构建相对坐标空间
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# --------------------------------------------------------------------------------
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xArray = OpenMaya.MPointArray(intermediatePoints)
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yArray = OpenMaya.MPointArray(intermediatePoints)
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zArray = OpenMaya.MPointArray(intermediatePoints)
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xPointArray = OpenMaya.MPointArray()
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yPointArray = OpenMaya.MPointArray()
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zPointArray = OpenMaya.MPointArray()
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for i in pointList:
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xArray.set(i, intermediatePoints[i].x + 1.0, intermediatePoints[i].y, intermediatePoints[i].z)
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yArray.set(i, intermediatePoints[i].x, intermediatePoints[i].y + 1.0, intermediatePoints[i].z)
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zArray.set(i, intermediatePoints[i].x, intermediatePoints[i].y, intermediatePoints[i].z + 1.0)
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intermediateFn.setPoints(xArray)
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skinFn.getPoints(xPointArray)
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for i in pointList:
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offX = xPointArray[i].x - skinPoints[i].x
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offY = xPointArray[i].y - skinPoints[i].y
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offZ = xPointArray[i].z - skinPoints[i].z
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xPointArray.set(i, offX, offY, offZ)
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intermediateFn.setPoints(yArray)
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skinFn.getPoints(yPointArray)
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for i in pointList:
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offX = yPointArray[i].x - skinPoints[i].x
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offY = yPointArray[i].y - skinPoints[i].y
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offZ = yPointArray[i].z - skinPoints[i].z
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yPointArray.set(i, offX, offY, offZ)
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intermediateFn.setPoints(zArray)
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skinFn.getPoints(zPointArray)
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for i in pointList:
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offX = zPointArray[i].x - skinPoints[i].x
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offY = zPointArray[i].y - skinPoints[i].y
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offZ = zPointArray[i].z - skinPoints[i].z
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zPointArray.set(i, offX, offY, offZ)
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# 将原始点设置回去
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intermediateFn.setPoints(intermediatePoints)
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# --------------------------------------------------------------------------------
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# 从蒙皮网格中提取
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# --------------------------------------------------------------------------------
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for i in pointList:
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extractItems = [zPointArray[i].x, zPointArray[i].y, zPointArray[i].z, 0.0,
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xPointArray[i].x, xPointArray[i].y, xPointArray[i].z, 0.0,
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yPointArray[i].x, yPointArray[i].y, yPointArray[i].z, 0.0,
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skinPoints[i].x, skinPoints[i].y, skinPoints[i].z, 1.0]
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resultItems = [0.0, 0.0, 1.0, 0.0,
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1.0, 0.0, 0.0, 0.0,
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0.0, 1.0, 0.0, 0.0,
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resultPoints[i].x, resultPoints[i].y, resultPoints[i].z, 1.0]
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extractMatrix = OpenMaya.MMatrix()
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OpenMaya.MScriptUtil.createMatrixFromList(extractItems, extractMatrix)
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resultMatrix = OpenMaya.MMatrix()
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OpenMaya.MScriptUtil.createMatrixFromList(resultItems, resultMatrix)
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point = OpenMaya.MPoint()
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point = targetPoints[i] * extractMatrix.inverse()
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point *= resultMatrix
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extractPoints.set(point, i)
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resultFn.setPoints(extractPoints)
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# --------------------------------------------------------------------------------
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# 清理
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# --------------------------------------------------------------------------------
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cmds.sets(resultFn.fullPathName(), e = True, fe = 'initialShadingGroup')
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parentNode = cmds.listRelatives(resultFn.fullPathName(), p = True)
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resultName = cmds.rename(parentNode, sel[1] + '_corrective')
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self.setResult(resultName)
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return self.redoIt()
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def redoIt(self):
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self.dagModifier.doIt()
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def undoIt(self):
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self.dagModifier.undoIt()
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def isUndoable(self):
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return True
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# --------------------------------------------------------------------------------
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# 定义语法，需要与 mel 和 python 一起工作
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# --------------------------------------------------------------------------------
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# 创建者
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def cmdCreator():
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return OpenMayaMPx.asMPxPtr(extractDeltas())
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def syntaxCreator():
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syn = OpenMaya.MSyntax()
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syn.addFlag(helpFlag, helpFlagLong)
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syn.addFlag(skinFlag, skinFlagLong, OpenMaya.MSyntax.kString)
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syn.addFlag(correctiveFlag, correctiveFlagLong, OpenMaya.MSyntax.kString)
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syn.addFlag(vertexListFlag, vertexListFlagLong, OpenMaya.MSyntax.kString)
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return syn
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# 初始化
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def initializePlugin(mobject):
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mplugin = OpenMayaMPx.MFnPlugin(mobject, 'Original plugin by James Jacobs / Python adaption by Ingo Clemens', '1.4', 'Any')
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try:
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mplugin.registerCommand(kPluginCmdName, cmdCreator, syntaxCreator)
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except:
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sys.stderr.write('Failed to register command: %s\n' % kPluginCmdName)
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raise
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def uninitializePlugin(mobject):
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mplugin = OpenMayaMPx.MFnPlugin(mobject)
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try:
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mplugin.deregisterCommand(kPluginCmdName)
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except:
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sys.stderr.write( 'Failed to unregister command: %s\n' % kPluginCmdName )
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raise
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# --------------------------------------------------------------------------------
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# mel 过程
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# --------------------------------------------------------------------------------
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mel = '''
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global proc extractDeltasDuplicateMesh()
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{
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string $sel[] = `ls -sl`;
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string $shapes[] = `listRelatives -s $sel[0]`;
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string $skin[] = `listConnections -type "skinCluster" $shapes[0]`;
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if (`size($skin)`)
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{
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string $dup[] = `duplicate -rr -rc $sel`;
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$shapes = `listRelatives -s $dup[0]`;
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for ($s in $shapes)
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{
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if (`getAttr ($s + ".intermediateObject")`)
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{
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delete $s;
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}
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}
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setAttr -l 0 ($dup[0] + ".tx");
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setAttr -l 0 ($dup[0] + ".ty");
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setAttr -l 0 ($dup[0] + ".tz");
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setAttr -l 0 ($dup[0] + ".rx");
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setAttr -l 0 ($dup[0] + ".ry");
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setAttr -l 0 ($dup[0] + ".rz");
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setAttr -l 0 ($dup[0] + ".sx");
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setAttr -l 0 ($dup[0] + ".sy");
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setAttr -l 0 ($dup[0] + ".sz");
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}
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}
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global proc performExtractDeltas()
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{
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string $sel[] = `ls -sl -tr`;
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string $shapes[];
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for ($s in $sel)
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{
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$shapes = `listRelatives -s $s`;
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for ($sh in $shapes)
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{
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if (`nodeType $sh` != "mesh")
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{
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error "The selected geometry is no polygon object!";
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}
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}
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}
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if (size($sel) == 2)
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{
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$shapes = `listRelatives -s $sel[0]`;
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string $skin[] = `listConnections -type "skinCluster" $shapes[0]`;
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if (!`size($skin)`)
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{
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error "The first selected object is not bound to a skin cluster!";
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}
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}
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else
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{
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error "Please select two polygonal objects!";
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}
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extractDeltas -s $sel[0] -c $sel[1];
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}
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'''
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meval(mel)
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