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Trying to recreate this javascript scrolling animation - responding to changes in scroll direction and morphing between different transitions

  • sample of the codebase from the reference /iris

I want to replicate this in gsap -- this version shows the morph from triangle to circle -- but then needs to morph to rectangle to flatten the sides out

// gsap.to()... infinity and beyond!
// To learn how to use GSAP, go to greensock/get-started

gsap.registerPlugin(ScrollTrigger);

var tl = gsap.timeline();
hippo = document.getElementById("hippo");

tl.to(
  hippo,
  {
    morphSVG: "#circle",
    duration: 1,
    scrollTrigger: {
      trigger: "#v-spacer-1",
      markers: false,
      scrub: true,
      start: "top top"
    }
  },
  "+=1"
);
@import url("+Negative:300,400&display=swap");
* {
  box-sizing: border-box;
}

body {
  font-family: "Signika Negative", sans-serif;
  font-weight: 300;
  margin: 0;
}
.v-spacer {
  height: 90vh;
  width: 100%;
  scroll-snap-align: center;
}

svg {
  display: block;
  width: 100vw;
  height: 100vh;
}

path {
  fill: linear-gradient(to right, #ff0000, #00ff00);
}

#svg2 {
  position: fixed;
}

#circle {
  visibility: hidden;
}
<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <title>CodePen - Gsap Scroll Morphing</title>
  <link rel="stylesheet" href="./style.css">

</head>

<body>
  <!-- partial:index.partial.html -->
  <svg version="1.1" id="svg2" inkscape:version="0.91 r13725" sodipodi:docname="Domestic_Dromedary_silhouette.svg" xmlns:svg="" xmlns:dc=".1/" xmlns:cc="" xmlns:rdf="" xmlns:sodipodi=".dtd" xmlns:inkscape="" xmlns="" xmlns:xlink="" x="0px" y="0px" style="enable-background:new 9 80 800 400;" xml:space="preserve">
    <style type="text/css">
      .st1 {
        fill: black;
      }
    </style>

    <!--SHAPE #1-->
    <path id="circle" class="st1" d="M 0 0 A 1 1 0 0 0 1000 0" />

    <!--SHAPE #2-->
    <path id="hippo" class="st1" d="M 0 0 L 500 500 L 1000 0" />

    <div id="v-spacer-1" class="v-spacer">

    </div>
    <div id="v-spacer-2" class="v-spacer">

    </div>
    <!-- partial -->
    <script src='.3.4/gsap.min.js'></script>
    <script src='.3.4/CSSRulePlugin.min.js'></script>
    <script src='.cdpn.io/16327/MorphSVGPlugin3.min.js'></script>
    <script src='@3/dist/ScrollTrigger.min.js'></script>
    <script src="./script.js"></script>

</body>

</html>

本文标签： javascriptTriangleCircleSquareSVG morphing on scrollStack Overflow

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