# Rotation
**URL:** https://forum.kirupa.com/t/rotation/2900
**Category:** flash
**Created:** [February 26, 2002, 2:03am UTC](https://forum.kirupa.com/t/rotation/2900 "2002-02-26T02:03:11Z")
**Posts on this page:** 20
**Page:** 1
### Author:  [@system](https://forum.kirupa.com/u/system)
#### Post date: [February 26, 2002, 2:03am UTC](https://forum.kirupa.com/t/rotation/2900/1 "2002-02-26T02:03:11Z")
can i rotate a MC like a motion tween, but without the motion tween? i want to press a button and the MC will rotate 360 degrees…
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### Author:  [@system](https://forum.kirupa.com/u/system)
#### Post date: [February 26, 2002, 7:15am UTC](https://forum.kirupa.com/t/rotation/2900/2 "2002-02-26T07:15:07Z")
Course you can !! That’s called Actionscript, baby. You can write that code in the Actions of your movie clip :
```auto
onClipEvent (load) {\r\r rotate = 0 ;\r\r amount = 5 ;//this will make the clip move by 5 degrees on each frame\r\r}\r\ronClipEvent (enterFrame) {\r\r this._rotation = rotate*amount ;\r\r rotate++ ;\r\r}
```
Get it ? I’m sure you do.\rpom 0]
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### Author:  [@system](https://forum.kirupa.com/u/system)
#### Post date: [February 26, 2002, 7:30am UTC](https://forum.kirupa.com/t/rotation/2900/3 "2002-02-26T07:30:04Z")
Crap… I know how to do this, but I can’t seem to figure it out at the moment… I WAS looking for a past post where Supra and I hammered this out, but I can’t seem to find it. I’m looking through my notes.
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### Author:  [@system](https://forum.kirupa.com/u/system)
#### Post date: [February 26, 2002, 7:31am UTC](https://forum.kirupa.com/t/rotation/2900/4 "2002-02-26T07:31:50Z")
Thanks POM… I’m slapping myself in the head. I thought that the question was, how do I rotate it ONLY 360 degrees and then stop… I had all this wacky code writen out… I’m a fool sometimes, I didn’t need half of what I had. 🙂
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### Author:  [@system](https://forum.kirupa.com/u/system)
#### Post date: [February 26, 2002, 12:17pm UTC](https://forum.kirupa.com/t/rotation/2900/5 "2002-02-26T12:17:02Z")
thanks guys.
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### Author:  [@system](https://forum.kirupa.com/u/system)
#### Post date: [February 26, 2002, 2:30pm UTC](https://forum.kirupa.com/t/rotation/2900/6 "2002-02-26T14:30:50Z")
that worked good, but how can i get a button to initiate that action, and then have it stop? could i just use if statements?\r\rI GOT IT TO START! NOW HOW DO I MAKE IT STOP??? lol…ok say i only want it to rotate for 360 degrees, and then stop? can i just use an if statement for that?
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### Author:  [@system](https://forum.kirupa.com/u/system)
#### Post date: [February 26, 2002, 3:56pm UTC](https://forum.kirupa.com/t/rotation/2900/7 "2002-02-26T15:56:38Z")
name the movie clip something in the instance panel.\r\ronClipEvent (enterFrame) {\r if (flag==true){\r rotate++;\r }\r}\r\rCreate a button with the following a/s\r\ron(release){\r if (\_root.myMovieClipName.flag==false){\r \_root.myMovieClipName.flag=true;\r }else{\r \_root.myMovieClipName.flag=false;\r}
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### Author:  [@system](https://forum.kirupa.com/u/system)
#### Post date: [February 26, 2002, 4:03pm UTC](https://forum.kirupa.com/t/rotation/2900/8 "2002-02-26T16:03:06Z")
hmmm that’s not working right… hold on
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### Author:  [@system](https://forum.kirupa.com/u/system)
#### Post date: [February 26, 2002, 4:09pm UTC](https://forum.kirupa.com/t/rotation/2900/9 "2002-02-26T16:09:23Z")
ok got it\r\rbutton has this a/s\r\ron (release) {\r if (flag==false) {\r \_root.rotator.rot=5;\r flag=true;\r }else{\r \_root.rotator.rot=0;\r flag=false;\r }\r}\r\r\rMovie clip has this a/s and an instance name of “rotator”\r\ronClipEvent (load){\r rot=5;\r}\ronClipEvent (enterFrame) {\r \_rotation+=rot;\r}
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### Author:  [@system](https://forum.kirupa.com/u/system)
#### Post date: [February 26, 2002, 4:57pm UTC](https://forum.kirupa.com/t/rotation/2900/10 "2002-02-26T16:57:09Z")
I didn’t look at Upu’s code but if you use mine, you’ll just have to add a few lines:
```auto
onClipEvent (load) {\r\r rotate = 0 ;\r\r amount = 5 ;//this will make the clip move by 5 degrees on each frame\r\r}\r\ronClipEvent (enterFrame) {\r\rif (rotate < 360/amount) {\r\r this._rotation = rotate*amount ;\r\r rotate++ ;\r\r }\r\r}
```
pom 0] \rPS:no button involved in that script.
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### Author:  [@system](https://forum.kirupa.com/u/system)
#### Post date: [February 26, 2002, 5:47pm UTC](https://forum.kirupa.com/t/rotation/2900/11 "2002-02-26T17:47:39Z")
ok, had to put in my two cents…\r\rmake a button:
```auto
\r\ron(release){\r\r mpress = !mpress;\r\r}
```
\r\rmake that button a movie:
```auto
\r\ronClipEvent (enterFrame) {\r\r if(mpress){\r\r _rotation += 5;\r\r if(_rotation == 0) mpress = 0;\r\r }\r\r}
```
\r\rwhatever your +=ing by must be a factor of 360, otherwise it won’t equal 0 when it gets around.
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### Author:  [@system](https://forum.kirupa.com/u/system)
#### Post date: [February 26, 2002, 10:36pm UTC](https://forum.kirupa.com/t/rotation/2900/12 "2002-02-26T22:36:07Z")
You said
```auto
on(release){\r\r mpress = !mpress;\r\r}
```
and then
```auto
onClipEvent (enterFrame) {\r\r if(mpress){...
```
How does Flash handle that ? I mean, mpress is never initialized. Unless variables are automatically set to 0 by default. But I don’t think so, since I’ve had troubles with undefined values in the past…\rpom 0]
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### Author:  [@system](https://forum.kirupa.com/u/system)
#### Post date: [February 26, 2002, 11:57pm UTC](https://forum.kirupa.com/t/rotation/2900/13 "2002-02-26T23:57:23Z")
an undefined variables will evaluate as false in actionscript (which is not quite the same as 0).\r\rother languages will balk at undefined variables, but flash is quite forgiving.
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### Author:  [@system](https://forum.kirupa.com/u/system)
#### Post date: [February 27, 2002, 4:08pm UTC](https://forum.kirupa.com/t/rotation/2900/14 "2002-02-27T16:08:21Z")
cool, okay I was would like to get it to rotate only 135 degrees how can you do that? thanks suprabeener, because I do not see anything that looks like degrees.\r\rPom, I tried your method as well but it seems to stop 355 deg not 360. did I miss something?\r\rAlso I tried to get your codes to play counter clockwise instead of clockwise. supra’s I got to work fine (don’t understand it 😉 ), Pom’s I got it to go work but could not get it to stop.\r\rAny pointers would be great, thanks,\rMatt
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### Author:  [@system](https://forum.kirupa.com/u/system)
#### Post date: [February 27, 2002, 4:37pm UTC](https://forum.kirupa.com/t/rotation/2900/15 "2002-02-27T16:37:49Z")
```auto
\r\ronClipEvent (enterFrame) {\r\r if(mpress){\r\r // this is the speed and the direction,\r\r //subtract (-=) to go the other way\r\r _rotation += 5;\r\r // to stop at 135, make this read if(_rotation == 135)\r\r if(_rotation == 0) mpress = 0;\r\r }\r\r}\r\r
```
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### Author:  [@system](https://forum.kirupa.com/u/system)
#### Post date: [February 27, 2002, 8:42pm UTC](https://forum.kirupa.com/t/rotation/2900/16 "2002-02-27T20:42:30Z")
Yeah, OK, Supra’s code is better than mine… _snif_ But still it works. That 355 degrees thing is only a matter of if test. Just replace \* rotate \<\* by \* rotate \<=\*. And to go counter clockwise, I believe that this should work :
```auto
onClipEvent (load) {\r rotate = 0 ;\r amount = 5 ;\r}\ronClipEvent (enterFrame) {\rif (rotate <= 360/amount) {\r this._rotation = - rotate*amount ;//substracting instead of adding\r rotate++ ;\r }\r}
```
\rBut Supra’s script is better, I must admit. Wait a minute, I’ll find the ultimate simplest script.\r\rpom 0]
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### Author:  [@system](https://forum.kirupa.com/u/system)
#### Post date: [February 27, 2002, 9:31pm UTC](https://forum.kirupa.com/t/rotation/2900/17 "2002-02-27T21:31:11Z")
Okay, it works when I stop at 135 with this code\r\rif (\_rotation == 135) mpress = 0;\r\rbut when I change it to this it does not work, it keeps playing.\r\rif (\_rotation == 235) mpress = 0;\r\rI have tried to get it to rotate 360+45 degress and that does not work\rif (\_rotation == 360+45) mpress = 0;\rbut this does.\rif (\_rotation == 45+35) mpress = 0;\r\rI am just playing around trying to get a better understanding.\r\rWhat would be cool if I could get it to rotate 135, then rotate -90, then 135, then -90 until I get to 360 total kinda of three steps forward then two steps back type of thing.\r\rThanks for the great code Suprabeener and If I am not being too anoying could you help me out? you too Pom. 😉 \r\rMatt
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### Author:  [@system](https://forum.kirupa.com/u/system)
#### Post date: [February 27, 2002, 10:08pm UTC](https://forum.kirupa.com/t/rotation/2900/18 "2002-02-27T22:08:30Z")
All you ever wanted to know about \_rotation but were afraid to ask : just change the code to :
```auto
onClipEvent (enterFrame) {\r\r if (mpress) {\r\r trace (_rotation) ;\r\r _rotation += 5;\r\r // to stop at 135, make this read if(_rotation == 135)\r\r if (_rotation == 135) {\r\r mpress = 0;\r\r }\r\r }\r\r}\r\r
```
The trace (\_rotation) command will show you how Flash handles rotation : 0 to 180, then -175 to 0. That’s why \_rotation == 235 never happens. That would be \_rotation == -125.\rAbout that back and forth effect, you can get it easily with a series of flags. Give me 2 minutes.\r\rpom 0]
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### Author:  [@system](https://forum.kirupa.com/u/system)
#### Post date: [March 14, 2002, 6:52pm UTC](https://forum.kirupa.com/t/rotation/2900/19 "2002-03-14T18:52:01Z")
Hello, it has been a while since I have been on. Pom anything more on the rotation thing.\r\rNice to be back for a little bit.\r\rMatt
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### Author:  [@system](https://forum.kirupa.com/u/system)
#### Post date: [March 14, 2002, 9:47pm UTC](https://forum.kirupa.com/t/rotation/2900/20 "2002-03-14T21:47:57Z")
I don’t have the courage… Anybody ??\rpom 0]