为什么以下的代码不能实现一直按顺时针旋转,反而是顺时针旋转、逆时针旋转交替
local rotate1 = cc.RotateTo:create(1,90)
local rotate2 = cc.RotateTo:create(3,270)
local seq = cc.Sequence:create(rotate1,rotate2)
local repeatforever = cc.RepeatForever:create(seq)
rotate_png:runAction(repeatforever)