WebVR - virtual reality in your browsers

Slides for my Talk about WebVR. Presented at BED-Con in Berlin 2016 (http://bed-con.org/2016/)

Transcript

1. WebVR Virtual Reality in your browsers… Carsten Sandtner (@casarock)
2. about:me Carsten Sandtner @casarock Head of Software Development //mediaman GmbH
5. Short History Of VR
6. View Master ~1939 https://flic.kr/p/hkLi6g
7. Project Headsight 1961
8. https://www.youtube.com/watch?v=ISJWZpFIAlQ
9. Sensorama ~1962 https://upload.wikimedia.org/wikipedia/commons/d/dc/Sensorama-morton-heilig-virtual-reality-headset.jpg
10. „The ultimate display would, of course, be a room within which the computer can control the existence of matter. A chair displayed in such a room would be good enough to sit in. Handcuffs displayed in such a room would be confining, and a bullet displayed in such a room would be fatal. With appropriate programming such a display could literally be the Wonderland into which Alice walked.“ —Ivan Sutherland
11. Sega VR 1991
12. Virtua Racer 1992 CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=14111884
13. Virtual Boy 1995 https://flic.kr/p/6Vn8WN
14. Pop-Cultural References Tron (1982), Star Trek (1987), Matrix (1999)
15. VR Today
16. Oculus Rift DK1: 2013 DK2: 2014 Consumer Version: 2016 Image by Oculus VR, LLC
17. Google Cardboard 2014 By Evan-Amos https://commons.wikimedia.org/w/index.php?curid=45580283
18. HTC Vive 2016 Image © by HTC Corporation
19. Playstation VR Oct. 2016 Image © by Sony Computer Entertainment Inc.
20. Microsoft Hololens More AR, not really VR DevKit: 2016
21. VR In A Nutshell
22. https://twitter.com/guystufff/status/713075541738393600/video/1
24. Mobile Based Setup https://developer.mozilla.org/en-US/docs/Web/API/WebVR_API/WebVR_concepts
25. Computer Based Setup https://developer.mozilla.org/en-US/docs/Web/API/WebVR_API/WebVR_concepts
26. Sensors https://developer.mozilla.org/en-US/docs/Web/API/WebVR_API/WebVR_concepts
27. Field Of View https://developer.mozilla.org/en-US/docs/Web/API/WebVR_API/WebVR_concepts
28. Concepts For VR Apps https://developer.mozilla.org/en-US/docs/Web/API/WebVR_API/WebVR_concepts
29. Concepts For VR Apps • Eye strain • Motion Sickness • Latency • FPS • Degrees of Freedom ( DoF ) • Cone of focus • 3D Positional Audio -> Web Audio API! https://media.giphy.com/media/3o6gaVAxUrXlEFYpWw/giphy.gif
30. What Is WebVR?
31. Disclaimer Currently an Editors Draft! (V1.0 since Sptember, 1st 2016) https://mozvr.github.io/webvr-spec/
32. Available APIs • Navigator.getVRDevices • VRDevice/HMDVRDevice • PositionSensorVRDevice • VRPositionState • VREyeParameters • VRFieldOfView/VRFieldOfViewReadOnly
33. Get VR Devices navigator.getVRDevices().then(function(devices) { // Handle found Devices here... });
34. (HMD) VR Device for (var i = 0; i < devices.length; ++i) { if (devices[i] instanceof HMDVRDevice) { gHMD = devices[i]; break; } }
35. Position Sensor // If device found, get Position Sensor. if (gHMD) { for (var i = 0; i < devices.length; ++i) { if (devices[i] instanceof PositionSensorVRDevice && devices[i].hardwareUnitId === gHMD.hardwareUnitId) { gPositionSensor = devices[i]; break; } } }
36. Position State var posState = gPositionSensor.getState(); if (posState.hasPosition) { posPara.textContent = 'Position: x' + (posState.position.x) + ' y' + (posState.position.y) + ' z' + (posState.position.z); } if (posState.hasOrientation) { orientPara.textContent = 'Orientation: x' + (posState.orientation.x) + ' y' + (posState.orientation.y) + ' z' + (posState.orientation.z); }
37. Eye Parameters if (gHMD.getEyeParameters !== undefined) { var eyeParamsL = gHMD.getEyeParameters('left'); var eyeParamsR = gHMD.getEyeParameters('right'); eyeTranslationL = eyeParamsL.eyeTranslation; eyeTranslationR = eyeParamsR.eyeTranslation; eyeFOVL = eyeParamsL.recommendedFieldOfView; eyeFOVR = eyeParamsR.recommendedFieldOfView; } else { ... }
38. Field Of View function setCustomFOV(up, right, down, left) { var testFOV = new VRFieldOfView(up, right, down, left); gHMD.setFieldOfView(testFOV, testFOV, 0.01, 10000.0); var lEye = gHMD.getEyeParameters('left'); var rEye = gHMD.getEyeParameters('right'); console.log(lEye.currentFieldOfView); console.log(rEye.currentFieldOfView); }
39. „Learn WebGL And Start Creating VR …“
40. Stereoscopic Rendering in WebGL /* https://hacks.mozilla.org/2015/09/stereoscopic-rendering-in-webvr/ */ function update() { // ... other stuff happens here ... // left eye gl.viewport(0, 0, canvas.width / 2, canvas.height); mat4.multiply(mvpMatrix, leftEyeProjectionMatrix, leftEyeViewMatrix); gl.uniformMatrix4fv(uniforms.uMVPMatrixLocation, false, mvpMatrix); gl.drawElements(mode, count, type, offset); // right eye gl.viewport(canvas.width / 2, 0, canvas.width / 2, canvas.height); mat4.multiply(mvpMatrix, rightEyeProjectionMatrix, rightEyeViewMatrix); gl.uniformMatrix4fv(uniforms.uMVPMatrixLocation, false, mvpMatrix); gl.drawElements(gl.TRIANGLES, n, gl.UNSIGNED_SHORT, 0); requestAnimationFrame(update); }
41. „… or use a Boilerplate or Frameworks!“
42. three.js WebVR Renderer <script src="js/three.min.js"></script> <script src="js/effects/VREffect.js"></script> <script src="js/controls/VRControls.js"></script> <script> ... var effect = new THREE.VREffect( renderer ); ... effect.render( scene, camera ); </script>
43. „Don’t reinvent the squared wheel!“
44. WebVR Boilerplate three.js + webVRControls https://github.com/borismus/webvr-boilerplate
45. Mozilla A-Frame Building blocks for the virtual reality web
46. – https://aframe.io/ „Use markup to create VR experiences that work across desktop, iOS, Android, and the Oculus Rift.“
47. Hello World <!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Hello, World!</title> <script src="https://aframe.io/releases/0.2.0/aframe.min.js"></script> </head> <body> <a-scene> <a-box id="mybox" color="#6173F4" width="1" height="1" depth="1" position="1 1 1" rotation="0 0 0" scale="1 1 1"> </a-box> <a-sky color="#bbb"></a-sky> </a-scene> </body> </html>
49. Animated Box <!DOCTYPE html> <html> <head>. . .</head> <body> <a-scene> <a-box id="mybox" color="#6173F4" width="1" height="1" depth="1" position="1 1 1" rotation="0 0 0" scale="1 1 1"> <a-animation attribute="rotation" repeat="indefinite" to="0 180 0"></a-animation> </a-box> </a-scene> </body> </html>
51. Pointer <!DOCTYPE html> <html> <head>. . .</head> <body> <a-scene> <a-box id="mybox" color="#6173F4" width="1" height="1" depth="1" position="1 1 1" rotation="0 0 0" scale="1 1 1"> <a-animation attribute="rotation" repeat="indefinite" to="0 180 0"></a-animation> </a-box> <a-camera position="0 0 0"> <a-cursor color="#0000ff"> </a-camera> </a-scene> </body> </html>
53. Add Events <!DOCTYPE html> <html> <head>. . .</head> <body> <a-scene> <a-box id="mybox" color="#6173F4" width="1" height="1" depth="1" position="1 1 -5" rotation="0 0 0" scale="1 1 1"> <a-animation attribute="rotation" repeat="indefinite" to="0 180 0"></a-animation> <a-event name="mouseenter" color="#ff0000"></a-event> <a-event name="mouseleave" color="#6173F4"></a-event> </a-box> <a-camera position="0 0 0"> <a-cursor color="#0000ff"> </a-camera> <a-sky color="#bbb"></a-sky> </a-scene> </body> </html>
54. Add Events (Pure JS) var box = document.querySelector('#mybox'); box.addEventListener('mouseenter', function () { box.setAttribute('material', {color: '#ff0000'}); }); box.addEventListener('mouseleave', function() { box.setAttribute('material', {color: '#6173F4'}); });
57. Input Devices?
58. Image © 2015 Microsoft
59. Image by Oculus VR, LLC
60. Image © by HTC Corporation
62. By Evan-Amos - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=18936731
63. By Evan-Amos - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=18936731
64. Why WebVR?
65. –Internet „VR is just for Gaming!“
66. –Internet „Using WebGL is complicated.“
67. Some use cases • Immersive reportages • 3D Handbooks/Instructions • Panorama view without stupid plugins • Marketing instrument. (Supplements in magazines)
68. Some great examples
69. http://www.360syria.com/
70. http://vrviewer.istaging.co/#!/684173
71. https://www.washingtonpost.com/video/mars/public/
72. https://s3.amazonaws.com/vr-asset-repo/heart_demo_slack.html
73. http://inspirit.unboring.net/
74. http://a-way-to-go.com/
75. Conclusion
76. VR is amazing
77. WebVR is amazing… … but it’s not ready 
 (Editors Draft, Browser support) … and has high Hardware Requirements! … HMD Devices are not cheap. 
 (Except: Google Cardboard) … and it’s a pleasure to create content!
78. WebVR is amazing Carsten Sandtner @casarock sandtner@mediaman.de