68 lines
2.4 KiB
JavaScript
68 lines
2.4 KiB
JavaScript
// SPDX-License-Identifier: MPL-2.0
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// Copyright (c) 2023 Leon van Kammen/NLNET
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var xrf = {}
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xrf.init = function(opts){
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opts = opts || {}
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xrf.debug = document.location.hostname.match(/^(localhost|[0-9])/) ? 0 : false
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if( !xrf.debug ){
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console.log("add #debug=[0-9] to URL to see XR Fragment debuglog")
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xrf.debug = parseInt( ( document.location.hash.match(/debug=([0-9])/) || [0,'0'] )[1] )
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}
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if( xrf.debug != undefined ) xrf.stats()
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xrf.Parser.debug = xrf.debug
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xrf.detectCameraRig(opts)
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for ( let i in opts ) xrf[i] = opts[i]
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xrf.emit('init',opts)
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return xrf
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}
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xrf.query = function(){
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// framework implementations can override this function, see src/3rd/js/three/index.sj
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alert("queries are not implemented (yet) for this particular framework")
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}
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xrf.detectCameraRig = function(opts){
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if( opts.camera ){ // detect rig (if any)
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let getCam = ((cam) => () => cam)(opts.camera)
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let offsetY = 0
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while( opts.camera.parent.type != "Scene" ){
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offsetY += opts.camera.position.y
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opts.camera = opts.camera.parent
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opts.camera.getCam = getCam
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opts.camera.updateProjectionMatrix = () => opts.camera.getCam().updateProjectionMatrix()
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}
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opts.camera.offsetY = offsetY
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}
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}
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xrf.roundrobin = (frag, store) => {
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if( !frag.args || frag.args.length == 0 ) return 0
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if( !store.rr ) store.rr = {}
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let label = frag.fragment
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if( store.rr[label] ) return store.rr[label].next()
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store.rr[label] = frag.args
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store.rr[label].next = () => {
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store.rr[label].index = (store.rr[label].index + 1) % store.rr[label].length
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return store.rr[label].index
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}
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return store.rr[label].index = 0
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}
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xrf.stats = () => {
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// bookmarklet from https://github.com/zlgenuine/threejs_stats
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(function(){
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for( let i = 0; i < 4; i++ ){
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var script=document.createElement('script');script.onload=function(){var stats=new Stats();stats.showPanel( i );
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stats.dom.style.marginTop = `${i*48}px`; document.body.appendChild(stats.dom);requestAnimationFrame(function loop(){stats.update();requestAnimationFrame(loop)});};script.src='//rawgit.com/mrdoob/stats.js/master/build/stats.min.js';document.head.appendChild(script);
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}
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})()
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}
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xrf.hasTag = (tag,tags) => String(tags).match( new RegExp(`(^| )${tag}( |$)`,`g`) )
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// map library functions to xrf
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for ( let i in xrfragment ) xrf[i] = xrfragment[i]
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