Question

我在Clara.io中有几个模型，根据他们的帮助，如果你导出选择，那么它将是JSONLoader的文件，如果你导出完整的场景，它将是ObjectLoader的文件。但是，非导出函数使用JSONLoader（https://forum.clara.io/t/export-to-three-js-json-export-all-and-export-selected-both-export-scene-object/3709）。

在我的应用程序中，我只需要从模型中构建几何点对象。所以我正在寻找将加载的对象转换为Mesh的方法，或者从对象本身中减去几何减法的几何方法。在帮助和示例（三个和克拉拉）中，我只看到一个带有加载对象的动作 - scene.add(object)。

import THREE from 'three/build/three.module';
import {Scene,PerspectiveCamera,Fog,WebGLRenderer,ObjectLoader,Geometry} from 'three/build/three.module';
....
var loader = new ObjectLoader();
loader.load( 'assets/models/rabbit.json', function ( object  ) {
  //I don't need to add object here but this is the only thing that works
  //scene.add(object);
  //I need to do something like this
  geometry2 = new Geometry();
  geometry2.vertices = object.geometry.vertices; // ???
  particles = new Points( geometry2, new PointsMaterial( { color: 0xff0000, size:5 } ) );
  scene.add(particles)
});

Answer 1

所以clara.io似乎在场景中导出单个对象。因此，从中提取网格的方法如下：

loader.load( 'assets/models/rabbit.json', function ( object  ) {
  //I don't need to add object here but this is the only thing that works
  //scene.add(object);
  //I need to do something like this
  geometry2 = new Geometry();
  geometry2.vertices = object.children[0].geometry.vertices;
//object.children[0] - the first mesh in exported object
  particles = new Points( geometry2, new PointsMaterial( { color: 0xff0000, size:5 } ) );
  scene.add(particles)
});

Clara.io json，三个几何中的几何

1 个答案: