threejs基础入门案例研究——三维立体物体沿指定曲线循环移动

效果

代码展示

主要思路是先创建指定曲线路径，并将其分为1000个点，然后按照自定义路线从头遍历点的位置，然后修改物体位置以及朝向等，实现三维立体物体沿指定曲线循环移动的效果。这里以vue3代码为例，进行展示

<template>
  <div class="threejs">
    <div id="containerId" />
  </div>
</template>

<script setup>
import * as THREE from 'three';
import {
      OrbitControls } from 'three/addons/controls/OrbitControls';
import {
      ref, onMounted } from 'vue';
let scene;

const camera = ref();
const cameraCurve = ref();
const renderer = ref();
const container = ref();
const controls = ref();
const pathIndex = ref(1000); //小车的运动轨迹点索引
// const agv = ref();
let cube;

function initScene() {
     
  scene = new THREE.Scene();
}
function initCamera() {
     
  camera.value = new THREE.PerspectiveCamera(
    65,
    window.innerWidth / window.innerHeight,
    0.1,
    10000
  );
  camera.value.position