while presenting.")},this.setReferenceSpaceType=function(J){o=J,n.isPresenting===!0&&ut("WebXRManager: Cannot change reference space type while presenting.")},this.getReferenceSpace=function(){return c||a},this.setReferenceSpace=function(J){c=J},this.getBaseLayer=function(){return u!==null?u:f},this.getBinding=function(){return d===null&&_&&(d=new XRWebGLBinding(i,e)),d},this.getFrame=function(){return p},this.getSession=function(){return i},this.setSession=async function(J){if(i=J,i!==null){if(b=t.getRenderTarget(),i.addEventListener("select",X),i.addEventListener("selectstart",X),i.addEventListener("selectend",X),i.addEventListener("squeeze",X),i.addEventListener("squeezestart",X),i.addEventListener("squeezeend",X),i.addEventListener("end",W),i.addEventListener("inputsourceschange",st),S.xrCompatible!==!0&&await e.makeXRCompatible(),v=t.getPixelRatio(),t.getSize(R),_&&"createProjectionLayer"in XRWebGLBinding.prototype){let xt=null,Vt=null,bt=null;S.depth&&(bt=S.stencil?e.DEPTH24_STENCIL8:e.DEPTH_COMPONENT24,xt=S.stencil?Si:Dn,Vt=S.stencil?Hs:mn);let Gt={colorFormat:e.RGBA8,depthFormat:bt,scaleFactor:r};d=this.getBinding(),u=d.createProjectionLayer(Gt),i.updateRenderState({layers:[u]}),t.setPixelRatio(1),t.setSize(u.textureWidth,u.textureHeight,!1),x=new Ge(u.textureWidth,u.textureHeight,{format:Je,type:rn,depthTexture:new gi(u.textureWidth,u.textureHeight,Vt,void 0,void 0,void 0,void 0,void 0,void 0,xt),stencilBuffer:S.stencil,colorSpace:t.outputColorSpace,samples:S.antialias?4:0,resolveDepthBuffer:u.ignoreDepthValues===!1,resolveStencilBuffer:u.ignoreDepthValues===!1,storeMultisampledDepthBuffer:u.ignoreDepthValues===!1,storeMultisampledStencilBuffer:u.ignoreDepthValues===!1})}else{let xt={antialias:S.antialias,alpha:!0,depth:S.depth,stencil:S.stencil,framebufferScaleFactor:r};f=new XRWebGLLayer(i,e,xt),i.updateRenderState({baseLayer:f}),t.setPixelRatio(1),t.setSize(f.framebufferWidth,f.framebufferHeight,!1),x=new Ge(f.framebufferWidth,f.framebufferHeight,{format:Je,type:rn,colorSpace:t.outputColorSpace,stencilBuffer:S.stencil,resolveDepthBuffer:f.ignoreDepthValues===!1,resolveStencilBuffer:f.ignoreDepthValues===!1,storeMultisampledDepthBuffer:f.ignoreDepthValues===!1,storeMultisampledStencilBuffer:f.ignoreDepthValues===!1})}x.isXRRenderTarget=!0,this.setFoveation(l),c=null,a=await i.requestReferenceSpace(o),ne.setContext(i),ne.start(),n.isPresenting=!0,n.dispatchEvent({type:"sessionstart"})}},this.getEnvironmentBlendMode=function(){if(i!==null)return i.environmentBlendMode},this.getDepthTexture=function(){return g.getDepthTexture()};function st(J){for(let j=0;j=0&&(T[Vt]=null,E[Vt].disconnect(xt))}for(let j=0;j=T.length){T.push(xt),Vt=Gt;break}else if(T[Gt]===null){T[Gt]=xt,Vt=Gt;break}if(Vt===-1)break}let bt=E[Vt];bt&&bt.connect(xt)}}let q=new C,Q=new C;function et(J,j,xt){q.setFromMatrixPosition(j.matrixWorld),Q.setFromMatrixPosition(xt.matrixWorld);let Vt=q.distanceTo(Q),bt=j.projectionMatrix.elements,Gt=xt.projectionMatrix.elements,he=bt[14]/(bt[10]-1),tt=bt[14]/(bt[10]+1),rt=(bt[9]+1)/bt[5],at=(bt[9]-1)/bt[5],ot=(bt[8]-1)/bt[0],ht=(Gt[8]+1)/Gt[0],Bt=he*ot,Ot=he*ht,Ht=Vt/(-ot+ht),qt=Ht*-ot;if(j.matrixWorld.decompose(J.position,J.quaternion,J.scale),J.translateX(qt),J.translateZ(Ht),J.matrixWorld.compose(J.position,J.quaternion,J.scale),J.matrixWorldInverse.copy(J.matrixWorld).invert(),bt[10]===-1)J.projectionMatrix.copy(j.projectionMatrix),J.projectionMatrixInverse.copy(j.projectionMatrixInverse);else{let P=he+Ht,ae=tt+Ht,jt=Bt-qt,w=Ot+(Vt-qt),y=rt*tt/ae*P,O=at*tt/ae*P;J.projectionMatrix.makePerspective(jt,w,y,O,P,ae),J.projectionMatrixInverse.copy(J.projectionMatrix).invert()}}function Dt(J,j){j===null?J.matrixWorld.copy(J.matrix):J.matrixWorld.multiplyMatrices(j.matrixWorld,J.matrix),J.matrixWorldInverse.copy(J.matrixWorld).invert()}this.updateCamera=function(J){if(i===null)return;let j=J.near,xt=J.far;g.texture!==null&&(g.depthNear>0&&(j=g.depthNear),g.depthFar>0&&(xt=g.depthFar)),z.near=L.near=I.near=j,z.far=L.far=I.far=xt,(D!==z.near||B!==z.far)&&(i.updateRenderState({depthNear:z.near,depthFar:z.far}),D=z.near,B=z.far),z.layers.mask=J.layers.mask|6,I.layers.mask=z.layers.mask&-5,L.layers.mask=z.layers.mask&-3;let Vt=J.parent,bt=z.cameras;Dt(z,Vt);for(let Gt=0;Gt