ウェイト値を閾値で削除してそれ以外を指定値に書き換えるコード

SkinWeightFixer.py

from maya import cmds
from maya import mel

THRESHOLD_WEIGHT = 0.5
FIX_WEIGHT = 1.0

can_fix = True
selections = cmds.ls(sl=True) or None
# 選択物チェック
if selections is None:
    cmds.warning("Not any selected.")
    can_fix = False
# skinClusterチェック&取得
if can_fix:
    obj = selections[0]
    skin_cluster = mel.eval("findRelatedSkinCluster {};".format(obj))
    if skin_cluster == "":
        cmds.warning("Selected object does not have skinCluster.")
        can_fix = False

if can_fix:        
    # ウェイト値が閾値以下のものを削除
    mel.eval("doPruneSkinClusterWeightsArgList 1 {\""+repr(THRESHOLD_WEIGHT)+"\"};")
    
    jnts = cmds.ls(type="joint")
    cmds.progressWindow(isInterruptable=True, title="Weight Fixing...", maxValue=len(jnts))
    for jnt in jnts:
        # スキンインフルエンスの存在確認
        connections = cmds.listConnections(jnt, destination=True)
        exists_skinCluster = False
        for connect in connections:
            if connect == skin_cluster:
                exists_skinCluster = True
                break
        
        if exists_skinCluster:
            # 影響を受けている頂点の選択
            cmds.select(cl=True)
            cmds.skinCluster(skin_cluster, e=True, selectInfluenceVerts=jnt)
            # 値を指定値に補正
            for vtx in cmds.ls(sl=True, fl=True):
                if vtx != "{}Shape".format(obj):
                    cmds.skinPercent(skin_cluster, vtx, transformValue=[(jnt, FIX_WEIGHT)])
        cmds.progressWindow(edit=True, step = 1)
    cmds.progressWindow(endProgress=True)
    cmds.select(cl=True)