From: "scott.aelist" <AE-List@media-motion.tv>
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References: <list-7492523@media-motion.tv>
In-Reply-To: <list-7492523@media-motion.tv>
Date: Wed, 15 Jan 2020 10:25:17 -0800
Message-ID: <CAOoNOO1ueGW95R2+1AS5BDAPq3psP0_pqS95sK909BvU7NneiA@mail.gmail.com>
Subject: Re: [AE] Repelling layers
To: After Effects Mail List <AE-List@media-motion.tv>
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This is pretty fancy to me. Thanks for sharing Nathan : )

On Wed, Jan 15, 2020 at 10:15 AM Nathan Shipley <AE-List@media-motion.tv> w=
rote:
>
> Henry,
>
> Here's something really basic I just whipped up that simply moves layers =
away from a null.  It just pushes objects away from where the null is when =
they're closer than the "Distance Threshold" control.  You can increase the=
 amount that they move with "Move Away Multiplier."
>
> Just paste the position expression from one of the solids to your own lay=
ers and it should work or at least be a starting point to tinker further.  =
Expression pasted below as well:
>
> Here's a quick screencapture showing what it does:
> https://www.dropbox.com/s/97yymslvdmjgeez/MoveAwayDemo_01.mp4?dl=3D0
>
> And here's the .AEP:
> https://www.dropbox.com/s/8g3scef520fir3r/MoveAwayExpression_NS_01.aep?dl=
=3D0
>
> Not fancy but maybe helpful?
>  - Nathan
>
> p =3D transform.position;
> nullPos =3D thisComp.layer("Parent And Controls").transform.position;
> distanceThreshold =3D thisComp.layer("Parent And Controls").effect("Dista=
nce Threshold")("Slider");
> moveAwayMult =3D thisComp.layer("Parent And Controls").effect("Move Away =
Muliplier")("Slider");
>
> distance =3D length(p, nullPos);
>
> if (distance < distanceThreshold) {
>     distanceMult =3D (Math.log(distanceThreshold / distance)) * moveAwayM=
ult;
>     delta =3D nullPos - p;
>     nDelta =3D (normalize(delta));
>     newPos =3D p - nDelta * distanceMult;
> } else {
>     p
> }
>
> On Wed, Jan 15, 2020 at 9:13 AM henry birdseye <AE-List@media-motion.tv> =
wrote:
>>
>> This is true. If I had any sort of budget at all this would be ideal.
>>
>> About a decade ago, ways of doing this abounded on the interwebz...
>> those links have since passed on. Character Animator has a physics
>> engine I may explore.
>>
>>
>> On 1/15/2020 11:00 AM, Peter Lund wrote:
>> > Hi,
>> >
>> > i gutes you need something like this.
>> >
>> > https://aescripts.com/newton/
>> >
>> > a physic engine that helps you with the repelling and interaction.
>> >
>> > this is all I found under =E2=80=9Ephysic=E2=80=9C topic =E2=80=A6
>> >
>> > https://aescripts.com/search/?q=3Dphysic
>> >
>> > hope this helps you
>> >
>> > Peter
>> >
>> >> Am 15.01.2020 um 14:40 schrieb henry birdseye <AE-List@media-motion.t=
v>:
>> >>
>> >> I'm trying to get some layers to be repelled by a passing object, the=
 links I've found for how to do this are years old and don't work properly.
>> >>
>> >> Paul Tuersley's project no longer exists at http://www.aenhancers.com=
/viewtopic.php?t=3D630 and that seems ideal for what I need to do.
>> >>
>> >> Can anyone help me find a setup I can kind of plug right into. This, =
of course, came as a last minute client request.
>> >>
>> >> HB
>> >>
>> >>
>> >> +---End of message---+
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