webgl_materials_car
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 { GLTFLoader } from "three/examples/jsm/loaders/GLTFLoader.js";
import { DRACOLoader } from "three/examples/jsm/loaders/DRACOLoader.js";
import { RGBELoader } from "three/examples/jsm/loaders/RGBELoader.js";
/** @type {import("@minisheeep/mp-three-examples").OfficialExampleInfo} */
const exampleInfo = {
name: "webgl_materials_car",
useLoaders: [GLTFLoader, DRACOLoader, RGBELoader],
info: [
[
{
tag: "a",
link: "https://threejs.org",
content: "three.js"
},
{
tag: "text",
content: "car materials"
}
],
[
{
tag: "text",
content: "Ferrari 458 Italia model by"
},
{
tag: "a",
link: "https://sketchfab.com/models/57bf6cc56931426e87494f554df1dab6",
content: "vicent091036"
}
]
],
init: ({ window, canvas, GUI, Stats, needToDispose, useFrame, DecoderPath }) => {
let camera, scene, renderer;
let stats;
let grid;
let controls;
const wheels = [];
function init() {
renderer = new THREE.WebGLRenderer({ antialias: true, canvas });
renderer.setPixelRatio(window.devicePixelRatio);
renderer.setSize(window.innerWidth, window.innerHeight);
renderer.setAnimationLoop(animate);
renderer.toneMapping = THREE.ACESFilmicToneMapping;
renderer.toneMappingExposure = 0.85;
window.addEventListener("resize", onWindowResize);
stats = new Stats(renderer);
camera = new THREE.PerspectiveCamera(40, window.innerWidth / window.innerHeight, 0.1, 100);
camera.position.set(4.25, 1.4, -4.5);
controls = new OrbitControls(camera, renderer.domElement);
controls.maxDistance = 9;
controls.maxPolarAngle = THREE.MathUtils.degToRad(90);
controls.target.set(0, 0.5, 0);
controls.update();
scene = new THREE.Scene();
scene.background = new THREE.Color(3355443);
scene.environment = new RGBELoader().load("textures/equirectangular/venice_sunset_1k.hdr");
scene.environment.mapping = THREE.EquirectangularReflectionMapping;
scene.fog = new THREE.Fog(3355443, 10, 15);
grid = new THREE.GridHelper(20, 40, 16777215, 16777215);
grid.material.opacity = 0.2;
grid.material.depthWrite = false;
grid.material.transparent = true;
scene.add(grid);
const bodyMaterial = new THREE.MeshPhysicalMaterial({
color: 16711680,
metalness: 1,
roughness: 0.5,
clearcoat: 1,
clearcoatRoughness: 0.03
});
const detailsMaterial = new THREE.MeshStandardMaterial({
color: 16777215,
metalness: 1,
roughness: 0.5
});
const glassMaterial = new THREE.MeshPhysicalMaterial({
color: 16777215,
metalness: 0.25,
roughness: 0,
transmission: 1
});
const gui = new GUI();
gui.addColor({ color: bodyMaterial.color }, "color").name("body-color").onChange((value) => {
bodyMaterial.color.set(value);
});
gui.addColor({ color: detailsMaterial.color }, "color").name("details-color").onChange((value) => {
detailsMaterial.color.set(value);
});
gui.addColor({ color: glassMaterial.color }, "color").name("glass-color").onChange((value) => {
glassMaterial.color.set(value);
});
const shadow = new THREE.TextureLoader().load("models/gltf/ferrari_ao.png");
const dracoLoader = new DRACOLoader();
dracoLoader.setDecoderPath(DecoderPath.GLTF);
const loader = new GLTFLoader();
loader.setDRACOLoader(dracoLoader);
loader.load("models/gltf/ferrari.glb", function(gltf) {
const carModel = gltf.scene.children[0];
carModel.getObjectByName("body").material = bodyMaterial;
carModel.getObjectByName("rim_fl").material = detailsMaterial;
carModel.getObjectByName("rim_fr").material = detailsMaterial;
carModel.getObjectByName("rim_rr").material = detailsMaterial;
carModel.getObjectByName("rim_rl").material = detailsMaterial;
carModel.getObjectByName("trim").material = detailsMaterial;
carModel.getObjectByName("glass").material = glassMaterial;
wheels.push(
carModel.getObjectByName("wheel_fl"),
carModel.getObjectByName("wheel_fr"),
carModel.getObjectByName("wheel_rl"),
carModel.getObjectByName("wheel_rr")
);
const mesh = new THREE.Mesh(
new THREE.PlaneGeometry(0.655 * 4, 1.3 * 4),
new THREE.MeshBasicMaterial({
map: shadow,
blending: THREE.MultiplyBlending,
toneMapped: false,
transparent: true
})
);
mesh.rotation.x = -Math.PI / 2;
mesh.renderOrder = 2;
carModel.add(mesh);
scene.add(carModel);
needToDispose(renderer, scene, controls, dracoLoader);
});
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize(window.innerWidth, window.innerHeight);
}
const startTime = Date.now();
function animate() {
controls.update();
const time = -(Date.now() - startTime) / 1e3;
for (let i = 0; i < wheels.length; i++) {
wheels[i].rotation.x = time * Math.PI * 2;
}
grid.position.z = -time % 1;
renderer.render(scene, camera);
stats.update();
}
init();
}
};
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;