three.js 加载obj文件并解析_javascript three obj

作者：我家自动化 | 2024-02-16 06:26:58

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javascript three obj

效果：

stl、obj都是静态模型，不可以包含动画，fbx除了包含几何、材质信息，可以存储骨骼动画等数据。

说明：使用三维软件导出.obj模型文件的时候，会同时导出一个材质文件.mtl； .obj和.stl文件包含的信息一样都是几何体顶点相关数据，材质文件.mtl包含的是模型的材质信息，比如颜色、贴图路径等。可以只加载obj文件，默认材质是Phong ；

只加载obj文件的话，直接将返回的数据添加到场景中即可；


<!DOCTYPE html>
<html lang="en">
 
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>加载.obj模型文件</title>
  <script src="../three.js"></script>
  <script src="../OrbitControls.js"></script>
  <script src="../OBJLoader.js"></script>
</head>
 
<body>
  <script>
    // 1，创建场景
    var scene = new THREE.Scene();
    // 创建STL加载器
    var objLoader = new THREE.OBJLoader();
    objLoader.load('./FREE Bike Hardsurface KitbashID_174738173/8b6b8b6e9ffd125f0a2f5632b94083818f2f9c69/Bike_Parts_01.obj',
      geometry => { scene.add(geometry); 
      })
    objLoader.load('./FREE Bike Hardsurface KitbashID_174738173/8b6b8b6e9ffd125f0a2f5632b94083818f2f9c69/Bike_Parts_02.obj',
      geometry => { scene.add(geometry);
      })
    objLoader.load('./FREE Bike Hardsurface KitbashID_174738173/8b6b8b6e9ffd125f0a2f5632b94083818f2f9c69/Bike_Parts_03.obj',
      geometry => { scene.add(geometry);
      })
    objLoader.load('./FREE Bike Hardsurface KitbashID_174738173/8b6b8b6e9ffd125f0a2f5632b94083818f2f9c69/Bike_Parts_04.obj',
      geometry => { scene.add(geometry);
      })
    objLoader.load('./FREE Bike Hardsurface KitbashID_174738173/8b6b8b6e9ffd125f0a2f5632b94083818f2f9c69/Bike_Parts_05.obj',
      geometry => { scene.add(geometry);
      })
 
    // 3,创建灯光
    var point = new THREE.PointLight(0xffffff, 0.5);
    point.position.set(200, 200, 200);
    scene.add(point);
    var point2 = new THREE.PointLight(0xffffff, 0.5);
    point2.position.set(-200, 200, 200);
    scene.add(point2);
    var point3 = new THREE.PointLight(0xffffff);
    point3.position.set(200, -200, 200);
 
    // 4,创建相机对象
    var width = window.innerWidth;
    var height = window.innerHeight;
    var k = width / height;
    var s = 50;
    var camera = new THREE.OrthographicCamera(-s * k, s * k, s, -s, -2000, 2000);
    camera.position.set(0, 200, 100);
    camera.lookAt(scene.position);
    // 5，创建渲染器
    var renderer = new THREE.WebGLRenderer();
    renderer.setSize(width, height);
    document.body.appendChild(renderer.domElement);
 
    function render() {
      renderer.render(scene, camera);
      requestAnimationFrame(render);
    }
    var controls = new THREE.OrbitControls(camera, renderer.domElement);
    var axes = new THREE.AxesHelper(500);
    // scene.add(axes);
    render();
  </script>
</body>
 
</html>

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