zbw_curveTools.py 文件源码

def getNormalizedTangent(pt = ""):
    """
    gets normalized tan of selected (or given) list of cvs
    """

    if cmds.objectType(pt) != "nurbsCurve":
        return

    crv = pt.partition(".")[0]
    print pt, crv
    cvs = cmds.ls("{0}.cv[*]".format(crv), fl=True)
    denom = len(cvs)
    num = float(pt.partition("[")[2].rpartition("]")[0])
    pr = num/denom
    tan = cmds.pointOnCurve(crv, pr=pr, nt=True)

    return(tan)