Return-Path: Received: from omr13.networksolutionsemail.com ([205.178.146.63] verified) by media-motion.tv (CommuniGate Pro SMTP 4.2.10) with ESMTP-TLS id 4722220 for AE-List@media-motion.tv; Wed, 23 May 2012 04:11:28 +0200 Received: from cm-omr3 (mail.networksolutionsemail.com [205.178.146.50]) by omr13.networksolutionsemail.com (8.13.8/8.13.8) with ESMTP id q4N2DSiX006589 for ; Tue, 22 May 2012 22:13:28 -0400 Authentication-Results: cm-omr3 smtp.user=torno@sydefxink.com; auth=pass (CRAM-MD5) X-Authenticated-UID: torno@sydefxink.com Received: from [76.171.121.5] ([76.171.121.5:65202] helo=[192.168.0.19]) by cm-omr3 (envelope-from ) (ecelerity 2.2.2.41 r(31179/31189)) with ESMTPA id CA/09-14279-8C74CBF4; Tue, 22 May 2012 22:13:28 -0400 Subject: Re: [AE] Expression to maintain speed References: From: David Torno Content-Type: text/plain; charset=utf-8 X-Mailer: iPhone Mail (9B176) In-Reply-To: Message-Id: Date: Tue, 22 May 2012 19:13:21 -0700 To: After Effects Mail List Content-Transfer-Encoding: quoted-printable Mime-Version: 1.0 (1.0) You could try adding the loopOut() expression to your keyframed property lik= e so... loopOut("continue", numKeyframes=3D0); This will maintain the speed between the two keyframes as a constant speed u= ntil the layer ends. 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 "The most useless day is that in which we do not laugh" -Charles Field On May 22, 2012, at 6:22 PM, jarret langmeire wrote: > Hi everyone, >=20 > I've been trying to figure this out and have given up. I'm using a light a= s an emitter to send out pulses to various locations within a 3d space. I wo= uld 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 keyfra= me world the number of frames between the starting and ending position would= obviously need to be further apart the longer the distance travelled in ord= er to match the speed to a set of keyframes where the start and end point ar= e closer together. I imagine there must be an expression that can handle thi= s but alas, expressions are not my fort=C3=A9. >=20 > Any help would be greatly appreciated, >=20 > Jarret >=20