Return-Path: Received: from [216.70.64.52] (HELO n17.mail01.mtsvc.net) by media-motion.tv (CommuniGate Pro SMTP 4.2.10) with ESMTP-TLS id 4722343 for AE-List@media-motion.tv; Wed, 23 May 2012 07:18:56 +0200 Received: from n10.c03.server-system.net ([72.47.224.10]:40253) by n17.mail01.mtsvc.net with esmtps (TLSv1:AES256-SHA:256) (Exim 4.72) (envelope-from ) id 1SX40G-0003i0-Dr for AE-List@media-motion.tv; Wed, 23 May 2012 01:20:56 -0400 Received: from mobile-166-147-069-090.mycingular.net ([166.147.69.90]:33401 helo=[10.202.98.21]) by n10.c03.server-system.net with esmtpsa (TLS-1.0:RSA_AES_128_CBC_SHA:16) (Exim 4.69) (envelope-from ) id 1SX40E-0006mH-W0 for AE-List@media-motion.tv; Tue, 22 May 2012 22:20:55 -0700 Subject: Re: [AE] Expression to maintain speed References: From: Ae List Content-Type: text/plain; charset=utf-8 X-Mailer: iPhone Mail (9A406) In-Reply-To: Message-Id: Date: Wed, 23 May 2012 00:20:50 -0500 To: After Effects Mail List Content-Transfer-Encoding: quoted-printable Mime-Version: 1.0 (1.0) X-Authenticated-User: 48122 aelist@roetechnologies.com X-MT-ID: 3239eb68718995acad8623fa414aaa1fc41231a1 I think he's wanting a stop and go animation. Like between frame 0 and 24 mo= ve 10 pixels... Then wait a specific amount of frames and move 10 more pixel= s. =20 On May 22, 2012, at 11:56 PM, "Chris Zwar" wrote: > I'm not sure I completely understand what you're doing, but am I correct t= hat you're animating the position of a light, which is being used as an emit= ter by Particular? And you want the light to move at a constant speed? >=20 > If so, then you might be able to do what you want with roving keyframes. J= ust select all the position keyframes between your first and last, right-cli= ck and select 'rove across time'. No expression needed... >=20 > -Chris >=20 >=20 > -----Original Message----- > From: jarret langmeire [mailto:langmeire@gmail.com] > Sent: Wednesday, May 23, 2012 02:27 PM > To: 'After Effects Mail List' > Subject: Re: [AE] Expression to maintain speed >=20 > Hi David, >=20 > Unfortunately that won't work since the time interval between the beams is= > not constant. >=20 > On 23 May 2012 12:13, David Torno wrote: >=20 >> You could try adding the loopOut() expression to your keyframed property >> like so... >>=20 >> loopOut("continue", numKeyframes=3D0); >>=20 >> This will maintain the speed between the two keyframes as a constant spee= d >> until the layer ends. >>=20 >> David Torno >> Visual Effects Artist & Supervisor >> http://www.ghosttownmedia.com >> O: 213.739.2290 >> C: 818.391.6060 >> --------------------- >> http://www.sydefxink.com >> http://aeioweyou.blogspot.com >> http://mactex.blogspot.com >>=20 >> "The most useless day is that in which we do not laugh" >> -Charles Field >>=20 >> On May 22, 2012, at 6:22 PM, jarret langmeire wrote= : >>=20 >>> Hi everyone, >>>=20 >>> I've been trying to figure this out and have given up. I'm using a light= >> as an emitter to send out pulses to various locations within a 3d space. I= >> would like these pulses to travel at the same speed but can't figure out a= >> way of doing this when I keyframe the light to a different location - in >> keyframe world the number of frames between the starting and ending >> position would obviously need to be further apart the longer the distance= >> travelled in order to match the speed to a set of keyframes where the sta= rt >> and end point are closer together. I imagine there must be an expression >> that can handle this but alas, expressions are not my fort=C3=A9. >>>=20 >>> Any help would be greatly appreciated, >>>=20 >>> Jarret >>>=20 >>=20 >> +---End of message---+ >> To unsubscribe send any message to >>=20 >=20 >=20 >=20 > --=20 > -- >=20 > Jarret >=20 >=20 >=20 >=20 > +---End of message---+ > To unsubscribe send any message to