three.js内存泄漏问题处理（附代码）

第一步：先引入一个TrackResource.js文件，官网的git也能找到，链接忘记了(代码在文末) 第二部: 在使用的js里引入该js文件，如图： 第三步：将物体、材料等使用定义的track()进行包裹，如图： 第四步：需要销毁时进行调用清除,

 resMgr && resMgr.dispose()

TrackResource.js

import * as THREE from 'three/build/three.module'
export default class ResourceTracker {
  constructor() {
    this.resources = new Set();
  }
  track(resource) {
    if (!resource) {
      return resource;
    }

    // handle children and when material is an array of materials or
    // uniform is array of textures
    if (Array.isArray(resource)) {
      resource.forEach(resource => this.track(resource));
      return resource;
    }

    if (resource.dispose || resource instanceof THREE.Object3D) {
      this.resources.add(resource);
    }
    if (resource instanceof THREE.Object3D) {
      this.track(resource.geometry);
      this.track(resource.material);
      this.track(resource.children);
    } else if (resource instanceof THREE.Material) {
    // We have to check if there are any textures on the material
      for (const value of Object.values(resource)) {
        if (value instanceof THREE.Texture) {
          this.track(value);
        }
      }
      // We also have to check if any uniforms reference textures or arrays of textures
      if (resource.uniforms) {
        for (const value of Object.values(resource.uniforms)) {
          if (value) {
            const uniformValue = value.value;
            if (uniformValue instanceof THREE.Texture ||
              Array.isArray(uniformValue)) {
              this.track(uniformValue);
            }
          }
        }
      }
    }
    return resource;
  }
  untrack(resource) {
    this.resources.delete(resource);
  }
  dispose() {
    for (const resource of this.resources) {
      if (resource instanceof THREE.Object3D) {
        if (resource.parent) {
          resource.parent.remove(resource);
        }
      }
      if (resource.dispose) {
        resource.dispose();
      }
    }
    this.resources.clear();
  }
}