函数：3ds max 给选择对象设置轴心点

------轴心点函数大全
------函数名称中的字母含义：
------w:西 e：东 n:北 s:南 b:底 c:中心 t:顶 m:间 如：wnb表示西北下 smt表示南中上

fn pivot_wnb = (for i in selection do (i.pivot = [i.min.x,i.max.y,i.min.z]) )
fn pivot_wnc = (for i in selection do (i.pivot = [i.min.x,i.max.y,i.center.z]) )
fn pivot_wnt = (for i in selection do (i.pivot = [i.min.x,i.max.y,i.max.z]) )

fn pivot_wmb = (for i in selection do (i.pivot = [i.min.x,i.center.y,i.min.z]) )
fn pivot_wmc = (for i in selection do (i.pivot = [i.min.x,i.center.y,i.center.z]) )
fn pivot_wmt = (for i in selection do (i.pivot = [i.min.x,i.center.y,i.max.z]) )

fn pivot_wsb = (for i in selection do (i.pivot = [i.min.x,i.min.y,i.min.z]) )
fn pivot_wsc = (for i in selection do (i.pivot = [i.min.x,i.min.y,i.center.z]) )
fn pivot_wst = (for i in selection do (i.pivot = [i.min.x,i.min.y,i.max.z]) )

fn pivot_smb = (for i in selection do (i.pivot = [i.center.x,i.min.y,i.min.z]) )
fn pivot_smc = (for i in selection do (i.pivot = [i.center.x,i.min.y,i.center.z]) )
fn pivot_smt = (for i in selection do (i.pivot = [i.center.x,i.min.y,i.max.z]) )

fn pivot_nmb = (for i in selection do (i.pivot = [i.center.x,i.max.y,i.min.z]) )
fn pivot_nmc = (for i in selection do (i.pivot = [i.center.x,i.max.y,i.center.z]) )
fn pivot_nmt = (for i in selection do (i.pivot = [i.center.x,i.max.y,i.max.z]) )

fn pivot_neb = (for i in selection do (i.pivot = [i.max.x,i.max.y,i.min.z]) )
fn pivot_nec = (for i in selection do (i.pivot = [i.max.x,i.max.y,i.center.z]) )
fn pivot_net = (for i in selection do (i.pivot = [i.max.x,i.max.y,i.max.z]) )

fn pivot_emb = (for i in selection do (i.pivot = [i.max.x,i.center.y,i.min.z]) )
fn pivot_emc = (for i in selection do (i.pivot = [i.max.x,i.center.y,i.center.z]) )
fn pivot_emt = (for i in selection do (i.pivot = [i.max.x,i.center.y,i.max.z]) )

fn pivot_esb = (for i in selection do (i.pivot = [i.max.x,i.min.y,i.min.z]) )
fn pivot_esc = (for i in selection do (i.pivot = [i.max.x,i.min.y,i.center.z]) )
fn pivot_est = (for i in selection do (i.pivot = [i.max.x,i.min.y,i.max.z]) )

fn pivot_ccb = (for i in selection do (i.pivot = [i.center.x,i.center.y,i.min.z]) )
fn pivot_ccc = (for i in selection do (i.pivot = [i.center.x,i.center.y,i.center.z]) )
fn pivot_cct = (for i in selection do (i.pivot = [i.center.x,i.center.y,i.max.z]) )