3D.js

var scene = new THREE.Scene();
let container = $("#scene-container");

var camera = new THREE.PerspectiveCamera(
  60,
  $(container).innerWidth() / $(container).innerHeight(),
  1,
  1000
);

camera.position.set(0, -32, 200);
camera.lookAt(scene.position);
var renderer = new THREE.WebGLRenderer({ antialias: true, alpha: true });
renderer.setSize($(container).innerWidth(), $(container).innerHeight());
$(container).append(renderer.domElement);

var division = 40;
var limit = 200;
var grid = new THREE.GridHelper(limit * 2, division, "white", "white");
grid.translateY(-56);

var moveable = [];
for (let i = 0; i <= division; i++) {
  moveable.push(1, 1, 0, 0); // move horizontal lines only (1 - point is moveable)
}
grid.geometry.addAttribute(
  "moveable",
  new THREE.BufferAttribute(new Uint8Array(moveable), 1)
);
grid.material = new THREE.ShaderMaterial({
  uniforms: {
    time: {
      value: 0,
    },
    limits: {
      value: new THREE.Vector2(-limit, limit),
    },
    speed: {
      value: 5,
    },
  },
  vertexShader: `
    uniform float time;
    uniform vec2 limits;
    uniform float speed;

    attribute float moveable;

    varying vec3 vColor;

    void main() {
      vColor = color;
      float limLen = limits.y - limits.x;
      vec3 pos = position;
      if (floor(moveable + 0.5) > 0.5){ // if a point has "moveable" attribute = 1
        float dist = speed * time;
        float currPos = mod((pos.z + dist) - limits.x, limLen) + limits.x;
        pos.z = currPos;
      }
      gl_Position = projectionMatrix * modelViewMatrix * vec4(pos,1.0);
    }
  `,
  fragmentShader: `
    varying vec3 vColor;

    void main() {
      gl_FragColor = vec4(vColor, 1.);
    }
  `,
  vertexColors: THREE.VertexColors,
});

scene.add(grid);

var clock = new THREE.Clock();
var time = 0;

render();

function render() {
  requestAnimationFrame(render);
  time += clock.getDelta();
  grid.material.uniforms.time.value = time;
  renderer.render(scene, camera);
}

window.addEventListener("resize", onWindowResize, false);

function onWindowResize() {
  camera.aspect = $(container).innerWidth() / $(container).innerHeight();
  camera.updateProjectionMatrix();

  renderer.setSize($(container).innerWidth(), $(container).innerHeight());
}