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webar.js

v0.1.2

Published

JS framework for WebAR

Readme

WebAR.js

JS framework for WebAR.

Installing WebAR.js

npm install --save webar.js

Docs

  • Website && Documentations

Getting Started:

WebAR.js 包含几个模块:

  • WebAR - WebAR.js入口,获取Camera对象
  • Camera - 摄像头模块
  • DisplayTarget - 绘制模块
  • Detector - 检测算法模块
import WebAR from 'webar.js';

// 从 WebAR 获取配置好的camera对象
const camera = await WebAR.getWebCameraAsync();

// 异步打开摄像机
await camera.openAsync();

const canvas = document.querySelector('#canvas');
const gl = canvas.getContext('webgl');

// 配置并生成 displayTarget
const displayTarget = camera.createDisplayTarget(gl,);

// 绘制
const draw = () => {
  displayTarget.draw();
  window.requestAnimationFrame(draw);
}
window.requestAnimationFrame(draw);

/*
* 配置FaceDetector
* @param {String} detectorName - camera.DETECTOR.FACE = 'FACE', 配置FaceDetector
* @param {Object} option - option
* @param {Boolean} option.singleFace - 是否只检测最大的脸
* @param {Boolean} option.rect - 是否返回人脸框位置
* @param {Boolean} option.alignment - 是否返回人脸五官的点
*/
const faceDetector = camera.setDetector(WebAR.DETECTOR.FACE, {
  singleFace: false,
  rect: true,
  alignment: true,
});

// 启动detector
faceDetector.start().then(() => {
  // MarkerDetector 回调数据
  faceDetector.onResult(data => {
    console.log(data);
  });
}, () => {
  // rejecjt 回调。detector 异常。
  // 在安卓上可能是SO 下载失败,SO 初始化失败等
  // 在iOS 不应该进入错误回调,如果有请发issue。
});

/*
* 配置MarkerDetector
* @param {String} detectorName - camera.DETECTOR.FACE = 'FACE', 配置FaceDetector
* @param {Array} marker - marker id
* @param {Object} option - 选项
* @param {String} option.url - marder 训练数据地址
*/
const MarkerDetedctor = camera.setDetector(camera.DETECTOR.FACE, {
  markers: [ 'playbill', 'h' ],
  option: { url: 'http://' },
});

// 启动detector
MarkerDetector.start().then(() => {
  // MarkerDetector 回调数据
  MarkerDetector.onResult(data => {
    console.log(data);
  });
}, () => {
  // rejecjt 回调。detector 异常。
  // 在安卓上可能是SO 下载失败,SO 初始化失败等
  // 如果在iOS 上进入错误回调,请发issue。
});

// 截图功能
displayTarget.getImage(base64 => {
  // 当前帧base64
  console.log(base64);
});

License

MIT