webgl_loader_fbx
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。
js
import * as THREE from "three";
import { OrbitControls } from "three/examples/jsm/controls/OrbitControls.js";
import { FBXLoader } from "three/examples/jsm/loaders/FBXLoader.js";
/** @type {import("@minisheeep/mp-three-examples").OfficialExampleInfo} */
const exampleInfo = {
name: "webgl_loader_fbx",
useLoaders: [FBXLoader],
info: [
[
{ tag: "a", link: "https://threejs.org", content: "three.js" },
{ tag: "text", content: "- FBXLoader" }
],
[
{ tag: "text", content: "Character and animation from" },
{ tag: "a", link: "https://www.mixamo.com/", content: "Mixamo" }
]
],
init: ({ window, canvas, GUI, Stats, needToDispose }) => {
let camera, scene, renderer, stats, object, loader, guiMorphsFolder;
let mixer;
const clock = new THREE.Clock();
const params = {
asset: "Samba Dancing"
};
const assets = ["Samba Dancing", "morph_test"];
init();
function init() {
camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 1, 2e3);
camera.position.set(100, 200, 300);
scene = new THREE.Scene();
scene.background = new THREE.Color(10526880);
scene.fog = new THREE.Fog(10526880, 200, 1e3);
const hemiLight = new THREE.HemisphereLight(16777215, 4473924, 5);
hemiLight.position.set(0, 200, 0);
scene.add(hemiLight);
const dirLight = new THREE.DirectionalLight(16777215, 5);
dirLight.position.set(0, 200, 100);
dirLight.castShadow = true;
dirLight.shadow.camera.top = 180;
dirLight.shadow.camera.bottom = -100;
dirLight.shadow.camera.left = -120;
dirLight.shadow.camera.right = 120;
scene.add(dirLight);
const mesh = new THREE.Mesh(
new THREE.PlaneGeometry(2e3, 2e3),
new THREE.MeshPhongMaterial({ color: 10066329, depthWrite: false })
);
mesh.rotation.x = -Math.PI / 2;
mesh.receiveShadow = true;
scene.add(mesh);
const grid = new THREE.GridHelper(2e3, 20, 0, 0);
grid.material.opacity = 0.2;
grid.material.transparent = true;
scene.add(grid);
loader = new FBXLoader();
loadAsset(params.asset);
renderer = new THREE.WebGLRenderer({ antialias: true, canvas });
renderer.setPixelRatio(window.devicePixelRatio);
renderer.setSize(window.innerWidth, window.innerHeight);
renderer.setAnimationLoop(animate);
renderer.shadowMap.enabled = true;
const controls = new OrbitControls(camera, renderer.domElement);
controls.target.set(0, 100, 0);
controls.update();
window.addEventListener("resize", onWindowResize);
stats = new Stats(renderer);
const gui = new GUI();
gui.add(params, "asset", assets).onChange(function(value) {
loadAsset(value);
});
guiMorphsFolder = gui.addFolder("Morphs").hide();
needToDispose(() => [renderer, scene, controls, loader]);
}
function loadAsset(asset) {
loader.load("models/fbx/" + asset + ".fbx", function(group) {
if (object) {
object.traverse(function(child) {
if (child.material) {
const materials = Array.isArray(child.material) ? child.material : [child.material];
materials.forEach((material) => {
if (material.map) material.map.dispose();
material.dispose();
});
}
if (child.geometry) child.geometry.dispose();
});
scene.remove(object);
}
object = group;
if (object.animations && object.animations.length) {
mixer = new THREE.AnimationMixer(object);
const action = mixer.clipAction(object.animations[0]);
action.play();
} else {
mixer = null;
}
guiMorphsFolder.children.forEach((child) => child.destroy());
guiMorphsFolder.hide();
object.traverse(function(child) {
if (child.isMesh) {
child.castShadow = true;
child.receiveShadow = true;
if (child.morphTargetDictionary) {
guiMorphsFolder.show();
const meshFolder = guiMorphsFolder.addFolder(child.name || child.uuid);
Object.keys(child.morphTargetDictionary).forEach((key) => {
meshFolder.add(
child.morphTargetInfluences,
child.morphTargetDictionary[key],
0,
1,
0.01
);
});
}
}
});
scene.add(object);
});
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize(window.innerWidth, window.innerHeight);
}
function animate() {
const delta = clock.getDelta();
if (mixer) mixer.update(delta);
renderer.render(scene, camera);
stats.update();
}
}
};
export {
exampleInfo as default
};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 {
//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;