Discover WebXR development using A-Frame; gain insights into designing virtual, augmented, and mixed-reality experiences. Learn about textures, shaders, animations, physics, and build an immersive guided tour.

Master WebXR Learn to Create Virtual and Augmented Reality web experiences.png

aframe.tar.gz

aframe

This course provides an introduction to the WebXR development stack. It offers proficiency in web-based XR tools and technologies, which are globally in demand and catalyzing the third iteration of the internet: Web 3.0. 

This course will give you hands-on experience designing and developing virtual, augmented, and mixed-reality web experiences. You’ll become familiar with the XR development in A-Frame while learning about textures, materials, shaders, animations, physics, and interactions in WebXR. Toward the end, you’ll build on the basics to learn more about the fundamental XR concepts. You’ll also get to design, build, and develop an immersive guided tour in WebXR.

By the end of this course, you’ll have a strong grasp of the XR fundamentals and essential XR development best practices.

Become Proficient in WebXR: Create XR Experiences Using A-Frame

var xrRefSpace = await xrSession.requestReferenceSpace('viewer');

requestAnimationFrame(animationFrameCallback);

function animationFrameCallback(timestamp, frame) {
  // Update the frame state here
}

function animationFrameCallback(timestamp, frame) {
  const session = frame.session;

  // Get updated tracking information from the `XRFrame` object
  const pose = frame.getViewerPose(referenceSpace);

  // Update the application's state and the frame buffer
  // ...

  // Queue the next repaint callback
  session.requestAnimationFrame(animationFrameCallback);
}

function animationFrameCallback(timestamp, frame) {
  const session = frame.session;

  // Get updated tracking information from the `XRFrame` object
  const pose = frame.getViewerPose(referenceSpace);

  // Update the application's state and the frame buffer
  if (pose) {
    // Only proceed if tracking data was successfully retrieved
    // Fetch the XRWebGLLayer object
    const glLayer = frame.session.renderState.baseLayer;

    // Bind WebGLRenderingContext's frame buffer with XRWebGLLayer's frame buffer
    gl.bindFrameBuffer(gl.FRAMEBUFFER, glLayer.framebuffer);

    // Update the WebGLRenderingContext's frame buffer here to propogate changes to the end user's device
    // ...
  }

  // Queue the next repaint callback
  session.requestAnimationFrame(animationFrameCallback);
}

<!doctype html>
<html>
  <body>
    <title> WebXR Example Application</title>
    <h1> WebXR Example Application</h1>
    <button
      id="xr-button"
      >Enter XR</button
    >
    <script>
      (function () {
        // Constants
        const XRSessionType = 'immersive-vr';
        const XRRefSpaceType = 'viewer';

        // Global Variables
        let xrButton = document.getElementById('xr-button');
        let xrSession = null;
        let xrRefSpace = null;
        let gl = null;

        function initXR() {
          if (navigator.xr) {
            navigator.xr.isSessionSupported(XRSessionType).then((supported) => {
              if (!supported) {
                xrButton.textContent = 'XR Not Supported';
                xrButton.disabled = true;
              }
            });
          }
        }

        function enterXR() {
          if (!xrSession) {
            navigator.xr.requestSession(XRSessionType).then(startSession);
          }
        }

        function exitXR() {
          if (xrSession) {
            xrSession.end().then(endSession);
          }
        }

        function endSession() {
          // Unbind the frame buffer
          gl.bindFramebuffer(gl.FRAMEBUFFER, null);

          // Clear global variables
          xrSession = null;
          xrRefSpace = null;
          gl = null;
        }

        function startSession(session) {
          xrSession = session;
          xrButton.textContent = 'Exit XR';
          xrButton.onclick = endSession;

          const canvas = document.createElement('canvas');
          gl = canvas.getContext('webgl', { xrCompatible: true });

          session.updateRenderState({
            baseLayer: new XRWebGLLayer(session, gl),
          });

          session.requestReferenceSpace(XRRefSpaceType).then((refSpace) => {
            xrRefSpace = refSpace;
            session.requestAnimationFrame(animationFrameCallback);
          });
        }

        function animationFrameCallback(time, frame) {
          const session = frame.session;

          const pose = frame.getViewerPose(xrRefSpace);

          if (pose) {
            const glLayer = frame.session.renderState.baseLayer;

            gl.bindFramebuffer(gl.FRAMEBUFFER, glLayer.framebuffer);

            gl.clearColor(
              Math.cos(time / 2000),
              Math.cos(time / 4000),
              Math.cos(time / 6000),
              1.0
            );

            gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
          }

          session.requestAnimationFrame(animationFrameCallback);
        }

        document.getElementById("xr-button").addEventListener("click", enterXR);
        initXR();
      })();
    </script>
  </body>
</html>


import React from 'react';
import { shallow, configure } from 'enzyme';
import Adapter from 'enzyme-adapter-react-16';

configure({ adapter: new Adapter() });

import HelloWorld from './app';

var TestResult = function() {
    this.succeeded = false;
    this.reason = "";
    this.input = "";
    this.expected_output = "";
    this.actual_output = "";
}

export const executeTests = function() {

  var results = [];

  result = new TestResult();
  result.input = 'HelloWorld Component';
  result.expected_output = "span containing text 'Hello World'"

  let wrapper = shallow(<HelloWorld />);

  // Call your Challenge function here.

  let type = wrapper.type();
  let testSuccessful = true;
  let failureReason;

  if (type !== 'span') {
    testSuccessful = false;
    failureReason = "You need to render exactly one span HTML element";
  } else if (wrapper.props().children != "Hello World") {
     testSuccessful = false;
     failureReason = "You have rendered wrong message in your span element";
  }

  result.actual_output = wrapper.html();

  if (testSuccessful) {
    result.succeeded = true;
    result.reason = "Succeeded"
  } else {
    result.succeeded = false;
    result.reason = failureReason;
  }

  results.push(result);

  return results;
}


React

Dart

GoJS React

Typescript React

Vue.js

Learn about spatial tracking, render loop, and state updates in the WebXR Device API.

Getting Started

XR Landscape

Introduction to A-Frame

Creating the Virtual Environment

Interaction with the Objects

Enhancing the Environment

Epilogue

WebXR Device API: Reference Space and Render Loop