webgl_materials_texture_anisotropy

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";

/** @type {import("@minisheeep/mp-three-examples").OfficialExampleInfo} */
const exampleInfo = {
  name: "webgl_materials_texture_anisotropy",
  useLoaders: [],
  info: [
    [
      {
        tag: "a",
        link: "https://threejs.org",
        content: "three.js"
      },
      {
        tag: "text",
        content: "- anisotropic texture filtering example"
      }
    ],
    [
      {
        tag: "text",
        content: "left anisotropy: $textLeft$ | right anisotropy: $textRight$"
      }
    ]
  ],
  init: ({ window, canvas, GUI, Stats, needToDispose, useFrame, bindInfoText }) => {
    const SCREEN_WIDTH = window.innerWidth;
    const SCREEN_HEIGHT = window.innerHeight;
    const textLeft = bindInfoText("$textLeft$");
    const textRight = bindInfoText("$textRight$");
    let stats;
    let camera, scene1, scene2, renderer;
    let mouseX = 0, mouseY = 0;
    const windowHalfX = window.innerWidth / 2;
    const windowHalfY = window.innerHeight / 2;
    init();
    function init() {
      renderer = new THREE.WebGLRenderer({ antialias: true, canvas });
      camera = new THREE.PerspectiveCamera(35, SCREEN_WIDTH / SCREEN_HEIGHT, 1, 25e3);
      camera.position.z = 1500;
      scene1 = new THREE.Scene();
      scene1.background = new THREE.Color(15923199);
      scene1.fog = new THREE.Fog(15923199, 1, 25e3);
      scene2 = new THREE.Scene();
      scene2.background = new THREE.Color(15923199);
      scene2.fog = new THREE.Fog(15923199, 1, 25e3);
      scene1.add(new THREE.AmbientLight(15659263, 3));
      scene2.add(new THREE.AmbientLight(15659263, 3));
      const light1 = new THREE.DirectionalLight(16777215, 6);
      light1.position.set(1, 1, 1);
      scene1.add(light1);
      const light2 = new THREE.DirectionalLight(16777215, 6);
      light2.position.set(1, 1, 1);
      scene2.add(light2);
      const textureLoader = new THREE.TextureLoader();
      const maxAnisotropy = renderer.capabilities.getMaxAnisotropy();
      const texture1 = textureLoader.load("textures/crate.gif");
      const material1 = new THREE.MeshPhongMaterial({ color: 16777215, map: texture1 });
      texture1.colorSpace = THREE.SRGBColorSpace;
      texture1.anisotropy = maxAnisotropy;
      texture1.wrapS = texture1.wrapT = THREE.RepeatWrapping;
      texture1.repeat.set(512, 512);
      const texture2 = textureLoader.load("textures/crate.gif");
      const material2 = new THREE.MeshPhongMaterial({ color: 16777215, map: texture2 });
      texture2.colorSpace = THREE.SRGBColorSpace;
      texture2.anisotropy = 1;
      texture2.wrapS = texture2.wrapT = THREE.RepeatWrapping;
      texture2.repeat.set(512, 512);
      if (maxAnisotropy > 0) {
        textLeft.value = texture1.anisotropy;
        textRight.value = texture2.anisotropy;
      } else {
        textLeft.value = "not supported";
        textRight.value = "not supported";
      }
      const geometry = new THREE.PlaneGeometry(100, 100);
      const mesh1 = new THREE.Mesh(geometry, material1);
      mesh1.rotation.x = -Math.PI / 2;
      mesh1.scale.set(1e3, 1e3, 1e3);
      const mesh2 = new THREE.Mesh(geometry, material2);
      mesh2.rotation.x = -Math.PI / 2;
      mesh2.scale.set(1e3, 1e3, 1e3);
      scene1.add(mesh1);
      scene2.add(mesh2);
      renderer.setPixelRatio(window.devicePixelRatio);
      renderer.setSize(SCREEN_WIDTH, SCREEN_HEIGHT);
      renderer.setAnimationLoop(animate);
      renderer.autoClear = false;
      renderer.domElement.style.position = "relative";
      stats = new Stats(renderer);
      canvas.addEventListener("pointermove", onDocumentMouseMove);
      needToDispose(renderer, scene1, scene2);
    }
    function onDocumentMouseMove(event) {
      mouseX = event.clientX - windowHalfX;
      mouseY = event.clientY - windowHalfY;
    }
    function animate() {
      render();
      stats.update();
    }
    function render() {
      camera.position.x += (mouseX - camera.position.x) * 0.05;
      camera.position.y = THREE.MathUtils.clamp(
        camera.position.y + (-(mouseY - 200) - camera.position.y) * 0.05,
        50,
        1e3
      );
      camera.lookAt(scene1.position);
      renderer.clear();
      renderer.setScissorTest(true);
      renderer.setScissor(0, 0, SCREEN_WIDTH / 2 - 2, SCREEN_HEIGHT);
      renderer.render(scene1, camera);
      renderer.setScissor(SCREEN_WIDTH / 2, 0, SCREEN_WIDTH / 2 - 2, SCREEN_HEIGHT);
      renderer.render(scene2, camera);
      renderer.setScissorTest(false);
    }
  }
};
export {
  exampleInfo as default
};

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;

webgl_materials_texture_anisotropy ​

webgl_materials_texture_anisotropy