# Rotating forth/back with AS
**URL:** https://forum.kirupa.com/t/rotating-forth-back-with-as/29715
**Category:** flash
**Created:** [August 29, 2003, 5:23pm UTC](https://forum.kirupa.com/t/rotating-forth-back-with-as/29715 "2003-08-29T17:23:19Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@Bacizone](https://forum.kirupa.com/u/Bacizone)
#### Post date: [August 29, 2003, 5:23pm UTC](https://forum.kirupa.com/t/rotating-forth-back-with-as/29715/1 "2003-08-29T17:23:19Z")
Hi,
I am still quite new to AS. I’d like to rotate a circle (compass\_mc) around its centerpoint slowly forth/back with +/- 45 degree…or better with random degree.
As file size is important, I can not solve it with MotionTween.
Up to this time I applied this code to the MC, which endlessly rotates it:
iranytu\_mc.onEnterFrame = function(){
this.\_rotation+=1;
}
Do you have any idea how to apply that sort of random slow forth/back rotation to the circle with AS?
Many thanks,
Bacizone
---
### Author:  [@system](https://forum.kirupa.com/u/system)
#### Post date: [August 29, 2003, 6:12pm UTC](https://forum.kirupa.com/t/rotating-forth-back-with-as/29715/2 "2003-08-29T18:12:45Z")
as a start
clip.onEnterFrame = function(){
if(this.\_rotation\<45)
this.\_rotation+=1;
}
with variations on this you could have any rotation you wanted but i think the use of setInterval is better than onenterframe.
---
### Author:  [@system](https://forum.kirupa.com/u/system)
#### Post date: [August 29, 2003, 6:52pm UTC](https://forum.kirupa.com/t/rotating-forth-back-with-as/29715/3 "2003-08-29T18:52:35Z")
to finish the code:
```auto
onClipEvent (load) {
a = 3;
}
onClipEvent (enterFrame) {
if (this._rotation<=45 && this._rotation>=-45) {
this._rotation += a;
} else {
a *= -1;
this._rotation += a;
}
}
```
works fine - you could add a bit of easing too…
---
### Author:  [@system](https://forum.kirupa.com/u/system)
#### Post date: [August 29, 2003, 7:03pm UTC](https://forum.kirupa.com/t/rotating-forth-back-with-as/29715/4 "2003-08-29T19:03:28Z")
This is also and option:
```auto
onClipEvent (enterFrame) {
d += 0.1;
_rotation = Math.cos(d)*20;
}
```