webgl_animation_multiple

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.jstypings.d.ts

import * as THREE from "three";
import { GLTFLoader } from "three/examples/jsm/loaders/GLTFLoader.js";
import * as SkeletonUtils from "three/examples/jsm/utils/SkeletonUtils.js";

/** @type {import("@minisheeep/mp-three-examples").OfficialExampleInfo} */
const exampleInfo = {
  name: "webgl_animation_multiple",
  useLoaders: [GLTFLoader],
  info: [
    [
      {
        tag: "text",
        content: "This demo shows the usage of"
      },
      {
        tag: "text",
        content: "and how to setup a shared skeleton."
      }
    ],
    [
      {
        tag: "text",
        content: "Soldier model from"
      },
      {
        tag: "a",
        link: "https://www.mixamo.com",
        content: "https://www.mixamo.com"
      },
      {
        tag: "text",
        content: "."
      }
    ]
  ],
  init: ({ window, canvas, GUI, Stats, needToDispose, useFrame }) => {
    let camera, scene, renderer, clock;
    let model, animations;
    const mixers = [], objects = [];
    const params = {
      sharedSkeleton: false
    };
    init();
    function init() {
      camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 1, 1e3);
      camera.position.set(2, 3, -6);
      camera.lookAt(0, 1, 0);
      clock = new THREE.Clock();
      scene = new THREE.Scene();
      scene.background = new THREE.Color(10526880);
      scene.fog = new THREE.Fog(10526880, 10, 50);
      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(-3, 10, -10);
      dirLight.castShadow = true;
      dirLight.shadow.camera.top = 4;
      dirLight.shadow.camera.bottom = -4;
      dirLight.shadow.camera.left = -4;
      dirLight.shadow.camera.right = 4;
      dirLight.shadow.camera.near = 0.1;
      dirLight.shadow.camera.far = 40;
      scene.add(dirLight);
      const mesh = new THREE.Mesh(
        new THREE.PlaneGeometry(200, 200),
        new THREE.MeshPhongMaterial({ color: 13355979, depthWrite: false })
      );
      mesh.rotation.x = -Math.PI / 2;
      mesh.receiveShadow = true;
      scene.add(mesh);
      const loader = new GLTFLoader();
      loader.load("models/gltf/Soldier.glb", function(gltf) {
        model = gltf.scene;
        animations = gltf.animations;
        model.traverse(function(object) {
          if (object.isMesh) object.castShadow = true;
        });
        setupDefaultScene();
      });
      renderer = new THREE.WebGLRenderer({ antialias: true, canvas });
      renderer.setPixelRatio(window.devicePixelRatio);
      renderer.setSize(window.innerWidth, window.innerHeight);
      renderer.setAnimationLoop(animate);
      renderer.shadowMap.enabled = true;
      window.addEventListener("resize", onWindowResize);
      const gui = new GUI();
      gui.add(params, "sharedSkeleton").onChange(function() {
        clearScene();
        if (params.sharedSkeleton === true) {
          setupSharedSkeletonScene();
        } else {
          setupDefaultScene();
        }
      });
      gui.open();
      needToDispose(renderer, scene);
    }
    function clearScene() {
      for (const mixer of mixers) {
        mixer.stopAllAction();
      }
      mixers.length = 0;
      for (const object of objects) {
        scene.remove(object);
        scene.traverse(function(child) {
          if (child.isSkinnedMesh) child.skeleton.dispose();
        });
      }
    }
    function setupDefaultScene() {
      const model1 = SkeletonUtils.clone(model);
      const model2 = SkeletonUtils.clone(model);
      const model3 = SkeletonUtils.clone(model);
      model1.position.x = -2;
      model2.position.x = 0;
      model3.position.x = 2;
      const mixer1 = new THREE.AnimationMixer(model1);
      const mixer2 = new THREE.AnimationMixer(model2);
      const mixer3 = new THREE.AnimationMixer(model3);
      mixer1.clipAction(animations[0]).play();
      mixer2.clipAction(animations[1]).play();
      mixer3.clipAction(animations[3]).play();
      scene.add(model1, model2, model3);
      objects.push(model1, model2, model3);
      mixers.push(mixer1, mixer2, mixer3);
    }
    function setupSharedSkeletonScene() {
      const sharedModel = SkeletonUtils.clone(model);
      const shareSkinnedMesh = sharedModel.getObjectByName("vanguard_Mesh");
      const sharedSkeleton = shareSkinnedMesh.skeleton;
      const sharedParentBone = sharedModel.getObjectByName("mixamorigHips");
      scene.add(sharedParentBone);
      const model1 = shareSkinnedMesh.clone();
      const model2 = shareSkinnedMesh.clone();
      const model3 = shareSkinnedMesh.clone();
      model1.bindMode = THREE.DetachedBindMode;
      model2.bindMode = THREE.DetachedBindMode;
      model3.bindMode = THREE.DetachedBindMode;
      const identity = new THREE.Matrix4();
      model1.bind(sharedSkeleton, identity);
      model2.bind(sharedSkeleton, identity);
      model3.bind(sharedSkeleton, identity);
      model1.position.x = -2;
      model2.position.x = 0;
      model3.position.x = 2;
      model1.scale.setScalar(0.01);
      model1.rotation.x = -Math.PI * 0.5;
      model2.scale.setScalar(0.01);
      model2.rotation.x = -Math.PI * 0.5;
      model3.scale.setScalar(0.01);
      model3.rotation.x = -Math.PI * 0.5;
      const mixer = new THREE.AnimationMixer(sharedParentBone);
      mixer.clipAction(animations[1]).play();
      scene.add(sharedParentBone, model1, model2, model3);
      objects.push(sharedParentBone, model1, model2, model3);
      mixers.push(mixer);
    }
    function onWindowResize() {
      camera.aspect = window.innerWidth / window.innerHeight;
      camera.updateProjectionMatrix();
      renderer.setSize(window.innerWidth, window.innerHeight);
    }
    function animate() {
      const delta = clock.getDelta();
      for (const mixer of mixers) mixer.update(delta);
      renderer.render(scene, camera);
    }
  }
};
export {
  exampleInfo as default
};

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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 {
  //为了减少官方代码的改动，实际上等同于 canvas
  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: 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;

webgl_animation_multiple ​

webgl_animation_multiple