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Subject: Re: [AE] wiggle expression - rotation in one direction?
From: James Culbertson <albion@speakeasy.net>
In-Reply-To: <list-4696463@media-motion.tv>
Date: Wed, 25 Apr 2012 18:17:31 -0700
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Message-Id: <EEAC3550-CF02-4133-8A3C-A54A0FD7000A@speakeasy.net>
References: <list-4696463@media-motion.tv>
To: "After Effects Mail List" <AE-List@media-motion.tv>

Thanks Dan and Scott, Dan's first works the best. The math.abs versions =
is a bit too jagged and edgy, but I can see it working in other =
situations.

James


On Apr 25, 2012, at 4:28 PM, Dan Ebberts wrote:

> One way would be to do it like this:
>=20
> amp =3D 20;
> freq =3D 1;
> ramp =3D .5;
> offset =3D amp/2;
> ease(time,inPoint,inPoint+ramp,0,offset + wiggle(freq,amp/2))
>=20
> If you want to adjust how close to zero it gets, you could tie the =
offset variable to a slider:
>=20
> amp =3D 20;
> freq =3D 1;
> ramp =3D .5;
> offset =3D effect("Slider Control")("Slider");
> ease(time,inPoint,inPoint+ramp,0,offset + wiggle(freq,amp/2))
>=20
>=20
> You could also do it with Math.abs(), but that will give you some =
pretty sharp bounces at zero:
>=20
> amp =3D 20;
> freq =3D 1;
> ramp =3D .5;
> ease(time,inPoint,inPoint+ramp,0,Math.abs(wiggle(freq,amp)))
>=20
> Dan
>=20
>=20
> -----Original Message----- From: James Culbertson
> Sent: Wednesday, April 25, 2012 4:01 PM
> To: After Effects Mail List
> Subject: [AE] wiggle expression - rotation in one direction?
>=20
> How would I limit a wiggle expression to one direction? For instance, =
rotation originating at 0 and wiggling in a negative direction, all =
other wiggle parameters the same.
>=20
> Thanks,
>=20
> James
>=20
>=20
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>=20
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>=20