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  1. I have recently started working with an animator who uses After Effects and the Bodymovin plugin to create SVG animations for websites. Bodymovin exports the SVG file as a JSON file, which you then run in a div via a JavaScript command from the lottie.js, Lottie Web library. (Check out the links, or scroll down further in this post for more details.) My primary goal is to create a workflow that allows for rapid creation of custom SVG animations, and be able to control them fully with GreenSock and ScrollMagic. During my research and attempts to integrate them all I have wondered how much of these JS libraries are overlapping each other in toolkits and effectiveness. My knowledge of anything past design, UI/UX, and basic front end JavaScript starts to become limited. So I have to ask, is it possible to control the GreenSock + Lottie animation using ScrollMagic? And perhaps more importantly, should I be animating using this workflow at all? Current Progress: ------------------------------- If you're interested in seeing my initial journey to get all 3 integrated I have documented it below... (Unfortunately I don't have CodePen pro so I wasn't able to put this all together in a Pen for viewing, if it's something that becomes necessary I will go ahead and get CodePen pro and do so.) Research: Integrating TimelineMax, with Lottie Web, and Controlling w/ ScrollMagic I have recently started working with an animator who uses After Effects and the Bodymovin plugin to create SVG animations for websites. Bodymovin exports the SVG file as a JSON file, which you then run in a div via a JavaScript command from the lottie.js, Lottie Web library as you can see from the sample below. var select = function(s) { return document.querySelector(s); }, selectAll = function(s) { return document.querySelectorAll(s); }, animationWindow = select('#animationWindow'), animData = { container: animationWindow, renderer: 'svg', loop: true, autoplay: true, path: 'PATH.JSON' }, anim; var anim = lottie.loadAnimation(animData); A Singular Example of Controlling Lottie w/ GreenSock I have been looking high and low for documented of examples of people successfully integrating with GreenSock and Scroll Magic with very limited results. I have found one excellent video on YouTube of a dev by the name Chris Gannon (who I suspect may be a member of these forums) successfully controlling a Lottie animation through TimelineMax but that is about it. My Attempts to Recreate This, and Add ScrollMagic Control Have not gone very well... I believe that the current state of my code (mostly able to get this far thanks to the work of Chris Gannon) is missing some vital information on the Lottie animation itself. How many frames does the animation have? The relation of scroll position to frame selection. Pushing that data through to TimelineMax to effectively control animation. My goal being to control the animation with a Tween, Duration Tween, or a Reversed Tween. The code below is my hack-job trying to get this all working; i'm currently dealing with an error from this code "Uncaught ReferenceError: animationControl is not defined". jQuery(function($) { //Lottie animation Window and Data wrapper var select = function(s) { return document.querySelector(s); }, selectAll = function(s) { return document.querySelectorAll(s); }, animationWindow = select('#animationWindow'), animData = { container: animationWindow, renderer: 'svg', loop: true, autoplay: true, path: 'PATH.JSON' }, anim; //Lotie animation trigger var anim = lottie.loadAnimation(animData); anim.setSpeed(1); //TimelineMax Lottie animation control $('#animationWindow').each(function(){ var animationControl = new TimelineMax({}); animationControl.to({frame:0}, 4, { frame:anim.totalFrames-1, onUpdate:function(){ anim.goToAndStop(Math.round(this.target.frame), true) }, repeat: -1, yoyo: true, ease:Linear.easeNone }) }); //ScrollMagic Scene var controller = new ScrollMagic.Controller(); var icon_scene = new ScrollMagic.Scene({triggerElement: "#animationWindow_trigger", triggerHook: 'onEnter'}) .setTween(animationControl) .addTo(controller); }); And this is my current state of affairs. I will be updating this post as I move along, and eventually - hopefully come up with an elegant solution to this.
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