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amirTrujillo

ScrollTrigger Lottie, create only when visible in viewport

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Hello, 

I'm currently working on a site with lots of heavy Lottie animation, I'm using THIS  linkup between ScrollTrigger and Lottie and it works perfectly. 

my only problem is that I want to create the Lottie DOM element only when visible in Viewport. I created this pen and as you can see on every progress update the animation start from the beginning and catches up. 

any advice?

 

Thanks in advance!

See the Pen yLjeQLV by amir-trujillo (@amir-trujillo) on CodePen

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  • Solution

Hi,

 

The issue is that your callback to update the lottie instance always starts at the first frame:

function moveLottieOnScroll(animation, vars, self) {
  if (animation === undefined) {
    return;
  }
  timeObj = { currentFrame: 0 }; // <- Always starts at the first frame
}

Just removing that from the code seems to work in the way you intend:

See the Pen WNJywLp by GreenSock (@GreenSock) on CodePen

 

Happy Tweening!

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