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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1 +1,5 @@ | ||
| // VR | ||
| export {default as VRAnimationLoop} from './webvr/vr-animation-loop'; | ||
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||
| // Misc | ||
| export {addEvents} from './events/add-events'; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,31 @@ | ||
| /* global document */ | ||
|
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| export function createEnterVRButton({canvas, title}) { | ||
| const {top, left, width, height} = canvas.getBoundingClientRect(); | ||
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| const container = document.createElement('div'); | ||
| container.style.position = 'absolute'; | ||
| container.style.top = `${top}px`; | ||
| container.style.left = `${left}px`; | ||
| container.style.width = `${width}px`; | ||
| container.style.height = `${height}px`; | ||
| container.style.pointerEvents = 'none'; | ||
| container.style.zIndex = '999'; | ||
| document.body.appendChild(container); | ||
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||
| const button = document.createElement('button'); | ||
| button.style.padding = '16px'; | ||
| button.style.border = '1px solid #fff'; | ||
| button.style.borderRadius = '8px'; | ||
| button.style.background = 'rgba(0,0,0,0.5)'; | ||
| button.style.color = '#fff'; | ||
| button.style.font = 'normal 20px sans-serif'; | ||
| button.style.cursor = 'pointer'; | ||
| button.style.margin = '20px auto'; | ||
| button.style.display = 'block'; | ||
| button.style.pointerEvents = 'all'; | ||
| button.textContent = title; | ||
| container.appendChild(button); | ||
|
|
||
| return button; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,124 @@ | ||
| /* global window, navigator */ | ||
| import {AnimationLoop, withParameters, log} from '@luma.gl/core'; | ||
| import {createEnterVRButton} from './utils'; | ||
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| export default class VRAnimationLoop extends AnimationLoop { | ||
| onInitialize(...args) { | ||
| this._enableWebVR(); | ||
| return super.onInitialize(...args); | ||
| } | ||
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| onRender(options) { | ||
| const {width, height} = options; | ||
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| // Need both vrPresenting and vrFrame | ||
| // to avoid race conditions when we exit VR | ||
| // after we schedule an animation frame | ||
| if (this.vrPresenting && this.vrFrame) { | ||
| this.vrDisplay.getFrameData(this.vrFrameData); | ||
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| const { | ||
| leftProjectionMatrix, | ||
| leftViewMatrix, | ||
| rightProjectionMatrix, | ||
| rightViewMatrix | ||
| } = this.vrFrameData; | ||
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| const leftEyeParams = Object.assign({}, options, { | ||
| vrEye: 'left', | ||
| vrProjectionMatrix: leftProjectionMatrix, | ||
| vrViewMatrix: leftViewMatrix | ||
| }); | ||
| withParameters( | ||
| this.gl, | ||
| { | ||
| viewport: [0, 0, width * 0.5, height], | ||
| scissor: [0, 0, width * 0.5, height], | ||
| scissorTest: true | ||
| }, | ||
| () => super.onRender(leftEyeParams) | ||
| ); | ||
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| const rightEyeParams = Object.assign({}, options, { | ||
| vrEye: 'right', | ||
| vrProjectionMatrix: rightProjectionMatrix, | ||
| vrViewMatrix: rightViewMatrix | ||
| }); | ||
| withParameters( | ||
| this.gl, | ||
| { | ||
| viewport: [width * 0.5, 0, width * 0.5, height], | ||
| scissor: [width * 0.5, 0, width * 0.5, height], | ||
| scissorTest: true | ||
| }, | ||
| () => super.onRender(rightEyeParams) | ||
| ); | ||
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| this.vrDisplay.submitFrame(); | ||
| return true; | ||
| } | ||
|
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| this.gl.viewport(0, 0, width, height); | ||
| return super.onRender(options); | ||
| } | ||
|
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| _vrDisplayPresentChange() { | ||
| if (this.vrDisplay.isPresenting) { | ||
| log.info(2, 'Entering VR')(); | ||
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| this.vrPresenting = true; | ||
| this.vrButton.style.display = 'none'; | ||
| } else { | ||
| log.info(2, 'Exiting VR')(); | ||
|
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| this.vrPresenting = false; | ||
| this.vrButton.style.display = 'block'; | ||
| } | ||
| } | ||
|
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| async _enableWebVR() { | ||
| this.vrSupported = 'getVRDisplays' in navigator && window.VRFrameData; | ||
| if (!this.vrSupported) return; | ||
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| this.vrFrameData = new window.VRFrameData(); | ||
| this.vrPresenting = false; | ||
| this.vrFrame = false; | ||
|
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| const displays = await navigator.getVRDisplays(); | ||
| if (displays && displays.length) { | ||
| log.info(2, 'Found VR Displays', displays)(); | ||
|
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| // TODO: Consider resizing canvas to match vrDisplay.getEyeParameters() | ||
| // TODO: Maybe allow to select display? | ||
|
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| this.vrDisplay = displays[0]; | ||
| this.vrButton = createEnterVRButton({ | ||
| canvas: this.gl.canvas, | ||
| title: `Enter VR (${this.vrDisplay.displayName})` | ||
| }); | ||
| this.vrButton.onclick = () => this.enterWebVR(); | ||
|
|
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| window.addEventListener('vrdisplaypresentchange', this._vrDisplayPresentChange.bind(this)); | ||
| } | ||
| } | ||
|
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| _requestAnimationFrame(renderFrame) { | ||
| if (this.vrPresenting) { | ||
| this.vrDisplay.requestAnimationFrame(() => { | ||
| this.vrFrame = true; | ||
| renderFrame(); | ||
| this.vrFrame = false; | ||
| }); | ||
| } else { | ||
| super._requestAnimationFrame(renderFrame); | ||
| } | ||
| } | ||
|
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| enterWebVR() { | ||
| this.vrDisplay.requestPresent([ | ||
| { | ||
| source: this.gl.canvas | ||
| } | ||
| ]); | ||
| } | ||
| } |
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