233 lines
4.7 KiB
JavaScript
233 lines
4.7 KiB
JavaScript
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class ARButton {
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static createButton( renderer, sessionInit = {} ) {
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const button = document.createElement( 'button' );
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function showStartAR( /*device*/ ) {
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if ( sessionInit.domOverlay === undefined ) {
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const overlay = document.createElement( 'div' );
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overlay.style.display = 'none';
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document.body.appendChild( overlay );
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const svg = document.createElementNS( 'http://www.w3.org/2000/svg', 'svg' );
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svg.setAttribute( 'width', 38 );
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svg.setAttribute( 'height', 38 );
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svg.style.position = 'absolute';
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svg.style.right = '20px';
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svg.style.top = '20px';
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svg.addEventListener( 'click', function () {
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currentSession.end();
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} );
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overlay.appendChild( svg );
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const path = document.createElementNS( 'http://www.w3.org/2000/svg', 'path' );
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path.setAttribute( 'd', 'M 12,12 L 28,28 M 28,12 12,28' );
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path.setAttribute( 'stroke', '#fff' );
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path.setAttribute( 'stroke-width', 2 );
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svg.appendChild( path );
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if ( sessionInit.optionalFeatures === undefined ) {
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sessionInit.optionalFeatures = [];
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}
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sessionInit.optionalFeatures.push( 'dom-overlay' );
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sessionInit.domOverlay = { root: overlay };
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}
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//
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let currentSession = null;
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async function onSessionStarted( session ) {
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session.addEventListener( 'end', onSessionEnded );
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renderer.xr.setReferenceSpaceType( 'local' );
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await renderer.xr.setSession( session );
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button.textContent = 'STOP AR';
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sessionInit.domOverlay.root.style.display = '';
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currentSession = session;
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}
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function onSessionEnded( /*event*/ ) {
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currentSession.removeEventListener( 'end', onSessionEnded );
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button.textContent = 'START AR';
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sessionInit.domOverlay.root.style.display = 'none';
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currentSession = null;
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}
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//
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button.style.display = '';
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button.style.cursor = 'pointer';
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button.style.left = 'calc(50% - 50px)';
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button.style.width = '100px';
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button.textContent = 'START AR';
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button.onmouseenter = function () {
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button.style.opacity = '1.0';
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};
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button.onmouseleave = function () {
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button.style.opacity = '0.5';
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};
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button.onclick = function () {
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if ( currentSession === null ) {
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navigator.xr.requestSession( 'immersive-ar', sessionInit ).then( onSessionStarted );
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} else {
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currentSession.end();
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if ( navigator.xr.offerSession !== undefined ) {
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navigator.xr.offerSession( 'immersive-ar', sessionInit )
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.then( onSessionStarted )
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.catch( ( err ) => {
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console.warn( err );
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} );
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}
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}
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};
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if ( navigator.xr.offerSession !== undefined ) {
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navigator.xr.offerSession( 'immersive-ar', sessionInit )
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.then( onSessionStarted )
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.catch( ( err ) => {
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console.warn( err );
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} );
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}
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}
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function disableButton() {
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button.style.display = '';
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button.style.cursor = 'auto';
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button.style.left = 'calc(50% - 75px)';
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button.style.width = '150px';
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button.onmouseenter = null;
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button.onmouseleave = null;
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button.onclick = null;
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}
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function showARNotSupported() {
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disableButton();
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button.textContent = 'AR NOT SUPPORTED';
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}
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function showARNotAllowed( exception ) {
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disableButton();
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console.warn( 'Exception when trying to call xr.isSessionSupported', exception );
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button.textContent = 'AR NOT ALLOWED';
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}
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function stylizeElement( element ) {
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element.style.position = 'absolute';
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element.style.bottom = '20px';
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element.style.padding = '12px 6px';
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element.style.border = '1px solid #fff';
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element.style.borderRadius = '4px';
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element.style.background = 'rgba(0,0,0,0.1)';
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element.style.color = '#fff';
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element.style.font = 'normal 13px sans-serif';
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element.style.textAlign = 'center';
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element.style.opacity = '0.5';
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element.style.outline = 'none';
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element.style.zIndex = '999';
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}
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if ( 'xr' in navigator ) {
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button.id = 'ARButton';
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button.style.display = 'none';
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stylizeElement( button );
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navigator.xr.isSessionSupported( 'immersive-ar' ).then( function ( supported ) {
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supported ? showStartAR() : showARNotSupported();
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} ).catch( showARNotAllowed );
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return button;
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} else {
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const message = document.createElement( 'a' );
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if ( window.isSecureContext === false ) {
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message.href = document.location.href.replace( /^http:/, 'https:' );
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message.innerHTML = 'WEBXR NEEDS HTTPS'; // TODO Improve message
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} else {
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message.href = 'https://immersiveweb.dev/';
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message.innerHTML = 'WEBXR NOT AVAILABLE';
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}
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message.style.left = 'calc(50% - 90px)';
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message.style.width = '180px';
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message.style.textDecoration = 'none';
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stylizeElement( message );
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return message;
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}
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}
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}
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export { ARButton };
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