[Maya] .offsetParentMatrixをmel/Pythonスクリプトで取り扱う場合の研究

global proc _Input_Lines(){
    print("_Input_Lines \n");
    
    _offsetParentMatrix_Value_Input("Dummy_calf_l",-15.216,0);
    _offsetParentMatrix_Value_Input("Dummy_calf_r",15.216,0);
    _offsetParentMatrix_Value_Input("Dummy_foot_l",-7.821,-0.047);
    _offsetParentMatrix_Value_Input("Dummy_foot_r",7.821,0.047);
}

global proc _offsetParentMatrix_Value_Input(string $NodeName,float $X,float $Y){
    print("_offsetParentMatrix_Value_Input \n");
    string $LocatorName="OffsetParentMatrix_locator_"+$NodeName;
    print("$LocatorName= "+$LocatorName+" \n");
    spaceLocator -position 0.0 0.0 0.0 -name $LocatorName;
    $LocatorNameTransX = $LocatorName+".translateX";
    print("$LocatorNameTransX= "+$LocatorNameTransX+" \n");
    setAttr $LocatorNameTransX $X;
    $LocatorNameTransY = $LocatorName+".translateY";
    print("$LocatorNameTransY= "+$LocatorNameTransY+" \n");
    setAttr $LocatorNameTransY $Y;
    $LocatorName_worldMatrix0 = $LocatorName+".worldMatrix[0]";
    print("$LocatorName_worldMatrix0= "+$LocatorName_worldMatrix0+" \n");
    $NodeName_offsetParentMatrix = $NodeName+".offsetParentMatrix";
    print("$NodeName_offsetParentMatrix= "+$NodeName_offsetParentMatrix+" \n");
    connectAttr -f $LocatorName_worldMatrix0 $NodeName_offsetParentMatrix;
}

import os
import stat
import maya.cmds as cmds
#import maya.OpenMaya as OpenMaya
import maya.api.OpenMaya as OpenMaya
def func_offsetParentMatrix(node,driver):
    mult = cmds.createNode("multMatrix")

    offset = matrix_to_list(
        OpenMaya.MMatrix(cmds.getAttr("{}.worldMatrix[0]".format(node)))
        * OpenMaya.MMatrix(cmds.getAttr("{}.matrix".format(node))).inverse()
        * OpenMaya.MMatrix(cmds.getAttr("{}.worldInverseMatrix[0]".format(driver)))
    )
    cmds.setAttr("{}.matrixIn[0]".format(mult), offset, type="matrix")

    cmds.connectAttr("{}.worldMatrix[0]".format(driver), "{}.matrixIn[1]".format(mult))

    parent = cmds.listRelatives(node, parent=True, path=True)
    if parent:
        cmds.connectAttr("{}.worldInverseMatrix[0]".format(parent[0]), "{}.matrixIn[2]".format(mult))

    cmds.connectAttr(
        "{}.matrixSum".format(mult), "{}.offsetParentMatrix".format(node)
    )
    
def matrix_to_list(mtx):
    lst=[]
    for row in range(0,4):
        for col in range(0,4):
            lst.append(mtx.getElement(row,col))
    return lst
    
def list_to_matrix(lst):
    mtx=OpenMaya.MMatrix(lst)
    # OpenMaya.MScriptUtil.createMatrixFromList(lst, mtx)
    return mtx

global proc Func_TEST_offsetParentMatrix_Proc(){    
    print("Func_TEST_offsetParentMatrix_Proc");
    spaceLocator -position -15.216 0.0 0.0 -name "calf_l_OffsetMatrix_locator_l" -absolute;
    func_offsetParentMatrix_Python_Proc("Dummy_calf_telescopic_l","calf_l_OffsetMatrix_locator_l");
}
    
global proc func_offsetParentMatrix_Python_Proc(string $node,string $driver){
    print("func_offsetParentMatrix");
    python("import func_offsetParentMatrix");
	python("import importlib");
	python("importlib.reload(func_offsetParentMatrix)");
    python("func_offsetParentMatrix.func_offsetParentMatrix('"+$node+"','"+$driver+"')");
}