zbw_rig.py 文件源码

def positionsAlongCurve(crv="", numPts = 3, *args):
    """
    returns list of numPts evenly distributed world positions along given nurbs crv
    """
    if not crv:
        return

    if isType(crv, "nurbsCurve"):
        posList = []
        shp = cmds.listRelatives(crv, s=True)[0]
        poc = cmds.shadingNode("pointOnCurveInfo", asUtility=True, name="tmpPOCInfo")
        cmds.connectAttr("{}.local".format(shp), "{}.inputCurve".format(poc))
        cmds.setAttr("{}.turnOnPercentage".format(poc), 1)
        lineLen = cmds.arclen(crv, ch=False)
        dist = float(numPts)/lineLen

        for x in range(0, numPts+1):
            perc = 1.0/numPts
            cmds.setAttr("{}.parameter".format(poc),x*perc)
            print x*perc
            pos = cmds.getAttr("{}.position".format(poc))[0]
            posList.append(pos)

        cmds.delete(poc)
        return(posList)