webaudio_orientation

对应 three.js 示例地址 。

仅需关注 init 函数的内容，其他部分都是示例小程序所使用的描述配置。

example.js

import * as THREE from "three";
import { OrbitControls } from "three/examples/jsm/controls/OrbitControls.js";
import { PositionalAudioHelper } from "three/examples/jsm/helpers/PositionalAudioHelper.js";
import { GLTFLoader } from "three/examples/jsm/loaders/GLTFLoader.js";

/** @type {import("@minisheeep/mp-three-examples").OfficialExampleInfo} */
const exampleInfo = {
  name: "webaudio_orientation",
  useLoaders: [GLTFLoader],
  initAfterConfirm: {
    text: ["注意音量"]
  },
  info: [
    [
      {
        tag: "a",
        link: "https://threejs.org",
        content: "three.js"
      },
      {
        tag: "text",
        content: "webaudio - orientation"
      }
    ],
    [
      {
        tag: "text",
        content: "music by"
      },
      {
        tag: "a",
        link: "http://www.newgrounds.com/audio/listen/376737",
        content: "skullbeatz"
      }
    ]
  ],
  init: ({ window, canvas, GUI, Stats, needToDispose, useFrame }) => {
    let scene, camera, renderer;
    function init() {
      camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 0.1, 100);
      camera.position.set(3, 2, 3);
      const reflectionCube = new THREE.CubeTextureLoader().setPath("textures/cube/SwedishRoyalCastle/").load(["px.jpg", "nx.jpg", "py.jpg", "ny.jpg", "pz.jpg", "nz.jpg"]);
      scene = new THREE.Scene();
      scene.background = new THREE.Color(10526880);
      scene.fog = new THREE.Fog(10526880, 2, 20);
      const hemiLight = new THREE.HemisphereLight(16777215, 9276813, 3);
      hemiLight.position.set(0, 20, 0);
      scene.add(hemiLight);
      const dirLight = new THREE.DirectionalLight(16777215, 3);
      dirLight.position.set(5, 5, 0);
      dirLight.castShadow = true;
      dirLight.shadow.camera.top = 1;
      dirLight.shadow.camera.bottom = -1;
      dirLight.shadow.camera.left = -1;
      dirLight.shadow.camera.right = 1;
      dirLight.shadow.camera.near = 0.1;
      dirLight.shadow.camera.far = 20;
      scene.add(dirLight);
      const mesh = new THREE.Mesh(
        new THREE.PlaneGeometry(50, 50),
        new THREE.MeshPhongMaterial({ color: 13355979, depthWrite: false })
      );
      mesh.rotation.x = -Math.PI / 2;
      mesh.receiveShadow = true;
      scene.add(mesh);
      const grid = new THREE.GridHelper(50, 50, 12698049, 12698049);
      scene.add(grid);
      const listener = new THREE.AudioListener();
      camera.add(listener);
      const positionalAudio = new THREE.PositionalAudio(listener);
      positionalAudio.setRefDistance(1);
      positionalAudio.setDirectionalCone(180, 230, 0.1);
      new THREE.AudioLoader().load(
        "https://oss.minisheep.cn/three-assets/sounds/376737_Skullbeatz___Bad_Cat_Maste.mp3",
        function(buffer) {
          positionalAudio.duration = buffer.duration;
          positionalAudio.setBuffer(buffer);
          positionalAudio.play();
          needToDispose({
            dispose() {
              positionalAudio.disconnect();
            }
          });
        }
      );
      const helper = new PositionalAudioHelper(positionalAudio, 0.1);
      positionalAudio.add(helper);
      const gltfLoader = new GLTFLoader();
      gltfLoader.load("models/gltf/BoomBox.glb", function(gltf) {
        const boomBox = gltf.scene;
        boomBox.position.set(0, 0.2, 0);
        boomBox.scale.set(20, 20, 20);
        boomBox.traverse(function(object) {
          if (object.isMesh) {
            object.material.envMap = reflectionCube;
            object.geometry.rotateY(-Math.PI);
            object.castShadow = true;
          }
        });
        boomBox.add(positionalAudio);
        scene.add(boomBox);
        renderer.setAnimationLoop(animate);
      });
      const wallGeometry = new THREE.BoxGeometry(2, 1, 0.1);
      const wallMaterial = new THREE.MeshBasicMaterial({
        color: 16711680,
        transparent: true,
        opacity: 0.5
      });
      const wall = new THREE.Mesh(wallGeometry, wallMaterial);
      wall.position.set(0, 0.5, -0.5);
      scene.add(wall);
      renderer = new THREE.WebGLRenderer({ antialias: true, canvas });
      renderer.setPixelRatio(window.devicePixelRatio);
      renderer.setSize(window.innerWidth, window.innerHeight);
      renderer.shadowMap.enabled = true;
      const controls = new OrbitControls(camera, renderer.domElement);
      controls.target.set(0, 0.1, 0);
      controls.update();
      controls.minDistance = 0.5;
      controls.maxDistance = 10;
      controls.maxPolarAngle = 0.5 * Math.PI;
      window.addEventListener("resize", onWindowResize);
      needToDispose(renderer, scene, controls, gltfLoader, reflectionCube);
    }
    function onWindowResize() {
      camera.aspect = window.innerWidth / window.innerHeight;
      camera.updateProjectionMatrix();
      renderer.setSize(window.innerWidth, window.innerHeight);
    }
    function animate() {
      renderer.render(scene, camera);
    }
    init();
  }
};
export {
  exampleInfo as default
};

typings.d.ts

import { Loader, TypedArray } from 'three';
/**
 * 官网示例的多端使用封装把版本
 * */
export interface OfficialExampleInfo extends MiniProgramMeta {
  /*** 示例名称（保持和官网一致）*/
  name: string;
  /** main */
  init: (context: LoadContext) => void;
}

export interface LoadContext {
  window: EventTarget & { innerWidth: number; innerHeight: number; devicePixelRatio: number };
  /** HTMLCanvasElement */
  canvas: any;
  /** https://www.npmjs.com/package/lil-gui */
  GUI: any;
  /**
   * https://www.npmjs.com/package/stats.js
   * 也可以使用其他受支持的版本
   * */
  Stats: any;
  /** 收集需要 dispose 的对象（官方示例没有处理这部分）*/
  needToDispose: (...objs: any[]) => void | ((fromFn: () => any[]) => void);

  /**基于 raq 的通用封装 */
  useFrame(animateFunc: (/** ms */ delta: number) => void): { cancel: () => void };

  /** 显示加载模态框 */
  requestLoading(text?: string): Promise<void>;

  /** 隐藏加载模态框*/
  cancelLoading(): void;

  /** 保存文件的通用封装*/
  saveFile(
    fileName: string,
    data: ArrayBuffer | TypedArray | DataView | string
  ): Promise<string | null>;

  /** 示例使用 DracoDecoder 时的资源路径 */
  DecoderPath: {
    GLTF: string;
    STANDARD: string;
  };

  /** 为资源路径拼上 CDN 前缀 */
  withCDNPrefix(path: string): string;

  /**
   * 在小程序中应使用 import { VideoTexture } from '@minisheep/three-platform-adapter/override/jsm/textures/VideoTexture.js';
   * 正常情况（web） 可直接使用 THREE.VideoTexture
   * */
  getVideoTexture(videoOptions: VideoOptions): Promise<[{ isVideoTexture: true }, video: any]>;

  /**
   * 在小程序中应使用 import { CameraTexture } from '@minisheep/three-platform-adapter/override/jsm/textures/CameraTexture.js';
   * 正常情况（web） 可参考示例 webgl_materials_video_webcam
   * */
  getCameraTexture(): { isVideoTexture: true };

  /** 用于动态修改 info 中的占位符*/
  bindInfoText(template: `$${string}$`, initValue?: string): { value: string };

  /** 分屏控件对应的事件回调 */
  onSlideStart(handle: () => void): void;
  /** 分屏控件对应的事件回调 */
  onSlideEnd(handle: () => void): void;
  /** 分屏控件对应的事件回调 */
  onSlideChange(handle: (offset: number, boxSize: number) => void): void;
}

export type VideoOptions = {
  src: string;
  /** 相当于 HTMLVideoElement 的 naturalWidth (小程序中获取不到)*/
  width: number;
  /** 相当于 HTMLVideoElement 的 naturalHeight (小程序中获取不到)*/
  height: number;
  loop?: boolean;
  autoplay?: boolean;
  muted?: boolean;
};

/** 示例小程序中使用的一些配置 */
export interface MiniProgramMeta {
  /** 用于统计加载相关信息 */
  useLoaders: Record<string, Loader>;
  /** 通用 info */
  info: TagItem[][];
  /** 特殊 info */
  infoPanel?: {
    left?: [string, string][];
    right?: [string, string][];
  };
  /** 分屏控件配置 */
  needSlider?: {
    /** 方向 */
    direction?: 'horizontal' | 'vertical';
    /** 初始偏移 0-100 */
    initPosition?: number;
  };
  /** 操作摇杆控件 */
  needArrowControls?: boolean;
  /** 默认需要的画布类型 */
  canvasType?: '2d' | 'webgl' | 'webgl2';
  /** 为保持效果一致所需要的画布样式 */
  canvasStyle?: {
    bgColor?: string;
    width?: number | string;
    height?: number | string;
  };
  /** 部分示例需要在加载前进行一些提示 */
  initAfterConfirm?: {
    /**
     * 提示类型
     * @default 'default'
     * */
    type?: 'warning' | 'default';
    text: string[];
  };
}

export interface BaseTag<T extends string> {
  tag: T;
  content: string;
}

export interface ATag extends BaseTag<'a'> {
  link: string;
}

export type TextTag = BaseTag<'text'>;

export type TagItem = TextTag | ATag;