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