Animation starts at final state

[PhilipS]

Hello everyone! I am trying to animate a 3D-Object and an html object. The animation for the 3D-Object works as intended. With the html element I ran into some trouble however. The html element gets first rendered at its final animation state, only after scrolling down tiny bit, which advances the animation in the timeline, does the element snap into its correct state. After pausing the scrolling, it snaps back to the wrong/final state of its animation.

I am guessing that this is caused by not continuously scrolling, and therefore not continuously updating the animation state of the element (which is handled by the useFrame function). So how do I fix this?

Code:

IKEA_ALEX_drawer.jsx (file of the 3D Model, where the gsap animations are handled as well)

import React, { useRef, useLayoutEffect } from "react";

import { useGLTF, useScroll } from "@react-three/drei";

import { useFrame } from "@react-three/fiber";

import gsap from "gsap";

 

const Drawer_Model = ({ props }) => {

const group = useRef();

const { nodes, materials, animations } = useGLTF(

"../../../public/drawer/IKEA_ALEX_drawer.glb"

);

//const { actions } = useAnimations(animations, group);

 

const tl = useRef(gsap.timeline());

const scroll = useScroll();

 

const drawer_one = useRef();

 

useFrame(() => {

if (tl.current) {

tl.current.seek(scroll.offset * tl.current.duration());

}

}, []);

 

useLayoutEffect(() => {

setTimeout(() => {

tl.current

.to(drawer_one.current.position, {

duration: 0.3,

y: -0.5,

})

.to(

"#direct_work_link",

{

duration: 0.3,

opacity: 0,

},

1.1

);

}, 10);

}, []);

 

//// framer-motion effect

//useEffect(() => {

// if (isDrawerVis) {

// actions.extend.play();

// }

//}, [isDrawerVis, actions]);

 

return (

<group ref={group} {...props} dispose={null}>

<group name="Scene">

<group

name="Sketchfab_model"

rotation={[-Math.PI / 2, 0, 0]}

scale={0.066}

>

<group

name="a2486ef730cd444f8a04c9f6a10981a3fbx"

rotation={[Math.PI / 2, 0, 0]}

>

<group name="RootNode">

<group

name="ALEX_Frame"

rotation={[-Math.PI / 2, 0, 0]}

scale={100}

>

<mesh

name="ALEX_Frame_ALEX_0"

geometry={nodes.ALEX_Frame_ALEX_0.geometry}

material={materials.ALEX}

/>

</group>

<group

name="Drawers_Large"

rotation={[-Math.PI / 2, 0, 0]}

scale={100}

>

<mesh

name="Drawer_Large_1"

geometry={nodes.Drawer_Large_1.geometry}

material={materials.ALEX}

/>

<mesh

name="Drawer_Large_2"

geometry={nodes.Drawer_Large_2.geometry}

material={materials.ALEX}

/>

<mesh

name="Drawer_Large_3"

geometry={nodes.Drawer_Large_3.geometry}

material={materials.ALEX}

/>

</group>

<group

name="Drawers_Small"

rotation={[-Math.PI / 2, 0, 0]}

scale={100}

>

<group ref={drawer_one}>

<mesh

name="Drawer_Small_1"

geometry={nodes.Drawer_Small_1.geometry}

material={materials.ALEX}

/>

</group>

<mesh

name="Drawer_Small_2"

geometry={nodes.Drawer_Small_2.geometry}

material={materials.ALEX}

/>

</group>

<group name="Legs" rotation={[-Math.PI / 2, 0, 0]} scale={100}>

<mesh

name="Legs_Legs_0"

geometry={nodes.Legs_Legs_0.geometry}

material={materials.Legs}

/>

</group>

<group

name="Plane"

position={[0, 33.2, 28.1]}

rotation={[-Math.PI / 2, 0, 0]}

scale={100}

>

<mesh

name="Plane__0"

geometry={nodes.Plane__0.geometry}

material={materials.Plane__0}

/>

</group>

</group>

</group>

</group>

</group>

</group>

);

};

 

export default Drawer_Model;

 

useGLTF.preload("../../../public/drawer/IKEA_ALEX_drawer.glb");

 

 

Drawer.jsx (file of the Canvas component)

import { Suspense, useEffect, useState, useRef } from "react";

import { Canvas } from "@react-three/fiber";

import { OrbitControls, Preload, ScrollControls } from "@react-three/drei";

import CanvasLoader from "../Loader";

import { AnimatePresence } from "framer-motion";

import { useInView } from "framer-motion";

import Drawer_Model from "./IKEA_ALEX_drawer";

 

const DrawerCanvas = () => {

const ref = useRef(null);

const isInView = useInView(ref);

 

const [isDrawerVis, setisDrawerVis] = useState(false);

 

useEffect(() => {

if (isInView) {

setisDrawerVis(true);

}

}, [isInView]);

 

return (

<div ref={ref} style={{ height: "100vh", overflow: "show" }}>

<Canvas

frameloop="demand"

shadows

camera={{ position: [0, 0, 15], fov: 35 }}

gl={{ preserveDrawingBuffer: true }}

className="mt-10"

>

<ScrollControls damping={0.25}>

<hemisphereLight

intensity={0.3}

position={[0, 10, 10]}

groundColor="white"

/>

<pointLight

intensity={1}

position={[0, 10, 20]}

rotation={[0, 0, 0]}

/>

<Suspense fallback={<CanvasLoader />}>

<Drawer_Model isDrawerVis={isDrawerVis} />

</Suspense>

 

<Preload all />

</ScrollControls>

</Canvas>

</div>

);

};

 

export default DrawerCanvas;

 

The html-element #direct_work_link is in an additional Hero.jsx file (DoubleSlideReveal is just a custom framer-motion animation):

<div className="text-secondary mt-10 z-10">

<DoubleSlideReveal>

<a href="#work" id="direct_work_link">

Direkt zu den Projekten ⇀

</a>

</DoubleSlideReveal>

</div>

 

 

Best regards, Philip

[GSAP Helper]

It's pretty tough to troubleshoot without a minimal demo - the issue could be caused by CSS, markup, a third party library, your browser, an external script that's totally unrelated to GSAP, etc. Would you please provide a very simple CodePen or CodeSandbox that demonstrates the issue? 

 

Please don't include your whole project. Just some colored <div> elements and the GSAP code is best (avoid frameworks if possible). See if you can recreate the issue with as few dependancies as possible. If not, incrementally add code bit by bit until it breaks. Usually people solve their own issues during this process! If not, then at least we have a reduced test case which greatly increases your chances of getting a relevant answer.

 

Here's a starter CodePen that loads all the plugins. Just click "fork" at the bottom right and make your minimal demo: 

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

 

If you're using something like React/Next/Vue/Nuxt or some other framework, you may find StackBlitz easier to use. We have a series of collections with different templates for you to get started on these different frameworks: React/Next/Vue/Nuxt.

 

Once we see an isolated demo, we'll do our best to jump in and help with your GSAP-specific questions. 

[Rodrigo]

Hi @PhilipS and welcome to the GreenSock forums!

 

Maybe this thread can provide some useful information:

 

Also be sure to use GSAP Context when working with React:

https://greensock.com/docs/v3/GSAP/gsap.context()

 

Finally take a look at this article:

https://greensock.com/react

 

Hopefully this helps.

Happy Tweening!