webxr-polyfill.min.js

/**
 * @license
 * webxr-polyfill
 * Copyright (c) 2017 Google
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/**
 * @license
 * cardboard-vr-display
 * Copyright (c) 2015-2017 Google
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/**
 * @license
 * webvr-polyfill-dpdb 
 * Copyright (c) 2017 Google
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/**
 * @license
 * wglu-preserve-state
 * Copyright (c) 2016, Brandon Jones.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
/**
 * @license
 * nosleep.js
 * Copyright (c) 2017, Rich Tibbett
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
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i=t[0],r=t[1],s=t[2],n=t[3],a=i*i+r*r+s*s+n*n,o=a?1/a:0;return e[0]=-i*o,e[1]=-r*o,e[2]=-s*o,e[3]=n*o,e}const R=function(e){let t=new s(4);return t[0]=e[0],t[1]=e[1],t[2]=e[2],t[3]=e[3],t},T=function(e,t,i,r){let n=new s(4);return n[0]=e,n[1]=t,n[2]=i,n[3]=r,n},P=function(e,t){return e[0]=t[0],e[1]=t[1],e[2]=t[2],e[3]=t[3],e},B=function(e,t){let i=t[0],r=t[1],s=t[2],n=t[3],a=i*i+r*r+s*s+n*n;return a>0&&(a=1/Math.sqrt(a),e[0]=i*a,e[1]=r*a,e[2]=s*a,e[3]=n*a),e},C=(function(){let e=u(),t=f(1,0,0),i=f(0,1,0)}(),function(){let e=M(),t=M()}(),function(){let e=function(){let e=new s(9);return s!=Float32Array&&(e[1]=0,e[2]=0,e[3]=0,e[5]=0,e[6]=0,e[7]=0),e[0]=1,e[4]=1,e[8]=1,e}()}(),Symbol("@@webxr-polyfill/XRRigidTransform"));class D{constructor(){if(this[C]={matrix:null,position:null,orientation:null,inverse:null},0===arguments.length)this[C].matrix=a(new Float32Array(16));else if(1===arguments.length)arguments[0]instanceof Float32Array?this[C].matrix=arguments[0]:(this[C].position=this._getPoint(arguments[0]),this[C].orientation=DOMPointReadOnly.fromPoint({x:0,y:0,z:0,w:1}));else{if(2!==arguments.length)throw new Error("Too many arguments!");this[C].position=this._getPoint(arguments[0]),this[C].orientation=this._getPoint(arguments[1])}if(this[C].matrix){let e=u();h(e,this[C].matrix),this[C].position=DOMPointReadOnly.fromPoint({x:e[0],y:e[1],z:e[2]});let t=M();c(t,this[C].matrix),this[C].orientation=DOMPointReadOnly.fromPoint({x:t[0],y:t[1],z:t[2],w:t[3]})}else this[C].matrix=a(new Float32Array(16)),A(this[C].matrix,T(this[C].orientation.x,this[C].orientation.y,this[C].orientation.z,this[C].orientation.w),f(this[C].position.x,this[C].position.y,this[C].position.z))}_getPoint(e){return e instanceof DOMPointReadOnly?e:DOMPointReadOnly.fromPoint(e)}get matrix(){return this[C].matrix}get position(){return this[C].position}get orientation(){return this[C].orientation}get inverse(){if(null===this[C].inverse){let e=a(new Float32Array(16));o(e,this[C].matrix),this[C].inverse=new D(e),this[C].inverse[C].inverse=this}return this[C].inverse}}const I=Symbol("@@webxr-polyfill/XRSpace");class L{constructor(e=null,t=null){this[I]={specialType:e,inputSource:t,baseMatrix:null,inverseBaseMatrix:null,lastFrameId:-1}}get _specialType(){return this[I].specialType}get _inputSource(){return this[I].inputSource}_ensurePoseUpdated(e,t){t!=this[I].lastFrameId&&(this[I].lastFrameId=t,this._onPoseUpdate(e))}_onPoseUpdate(e){"viewer"==this[I].specialType&&(this._baseMatrix=e.getBasePoseMatrix())}set _baseMatrix(e){this[I].baseMatrix=e,this[I].inverseBaseMatrix=null}get _baseMatrix(){return this[I].baseMatrix||this[I].inverseBaseMatrix&&(this[I].baseMatrix=new Float32Array(16),o(this[I].baseMatrix,this[I].inverseBaseMatrix)),this[I].baseMatrix}set _inverseBaseMatrix(e){this[I].inverseBaseMatrix=e,this[I].baseMatrix=null}get _inverseBaseMatrix(){return this[I].inverseBaseMatrix||this[I].baseMatrix&&(this[I].inverseBaseMatrix=new Float32Array(16),o(this[I].inverseBaseMatrix,this[I].baseMatrix)),this[I].inverseBaseMatrix}_getSpaceRelativeTransform(e){if(!this._inverseBaseMatrix||!e._baseMatrix)return null;let t=new Float32Array(16);return l(t,this._inverseBaseMatrix,e._baseMatrix),new D(t)}}const O=1.6,N=Symbol("@@webxr-polyfill/XRReferenceSpace"),G=["viewer","local","local-floor","bounded-floor","unbounded"];class Q extends L{constructor(e,t=null){if(!G.includes(e))throw new Error(`XRReferenceSpaceType must be one of ${G}`);if(super(e),"bounded-floor"===e&&!t)throw new Error("XRReferenceSpace cannot use 'bounded-floor' type if the platform does not provide the floor level");(function(e){return"bounded-floor"===e||"local-floor"===e})(e)&&!t&&((t=a(new Float32Array(16)))[13]=O),this._inverseBaseMatrix=t||a(new Float32Array(16)),this[N]={type:e,transform:t,originOffset:a(new Float32Array(16))}}_transformBasePoseMatrix(e,t){l(e,this._inverseBaseMatrix,t)}_originOffsetMatrix(){return this[N].originOffset}_adjustForOriginOffset(e){let t=new Float32Array(16);o(t,this[N].originOffset),l(e,t,e)}_getSpaceRelativeTransform(e){let t=super._getSpaceRelativeTransform(e);return this._adjustForOriginOffset(t.matrix),new XRRigidTransform(t.matrix)}getOffsetReferenceSpace(e){let t=new Q(this[N].type,this[N].transform,this[N].bounds);return l(t[N].originOffset,this[N].originOffset,e.matrix),t}}const k=Symbol("@@webxr-polyfill/XR"),z=["inline","immersive-vr","immersive-ar"],V={inline:{requiredFeatures:["viewer"],optionalFeatures:[]},"immersive-vr":{requiredFeatures:["viewer","local"],optionalFeatures:[]},"immersive-ar":{requiredFeatures:["viewer","local"],optionalFeatures:[]}},U="Polyfill Error: Must call navigator.xr.isSessionSupported() with any XRSessionMode\nor navigator.xr.requestSession('inline') prior to requesting an immersive\nsession. This is a limitation specific to the WebXR Polyfill and does not apply\nto native implementations of the API.";let H;if("performance"in e==!1){let e=Date.now();H=(()=>Date.now()-e)}else H=(()=>performance.now());var X=H;const W=Symbol("@@webxr-polyfill/XRPose");class j{constructor(e,t){this[W]={transform:e,emulatedPosition:t}}get transform(){return this[W].transform}get emulatedPosition(){return this[W].emulatedPosition}}const q=Symbol("@@webxr-polyfill/XRViewerPose");class Y extends j{constructor(e,t,i=!1){super(e,i),this[q]={views:t}}get views(){return this[q].views}}const Z=Symbol("@@webxr-polyfill/XRViewport");class J{constructor(e){this[Z]={target:e}}get x(){return this[Z].target.x}get y(){return this[Z].target.y}get width(){return this[Z].target.width}get height(){return this[Z].target.height}}const K=["left","right","none"],$=Symbol("@@webxr-polyfill/XRView");class ee{constructor(e,t,i,r,s){if(!K.includes(i))throw new Error(`XREye must be one of: ${K}`);const n=Object.create(null),a=new J(n);this[$]={device:e,eye:i,viewport:a,temp:n,sessionId:r,transform:t,viewIndex:s}}get eye(){return this[$].eye}get projectionMatrix(){return this[$].device.getProjectionMatrix(this.eye,this[$].viewIndex)}get transform(){return this[$].transform}_getViewport(e){if(this[$].device.getViewport(this[$].sessionId,this.eye,e,this[$].temp,this[$].viewIndex))return this[$].viewport}}const te=Symbol("@@webxr-polyfill/XRFrame"),ie="XRFrame access outside the callback that produced it is invalid.",re="getViewerPose can only be called on XRFrame objects passed to XRSession.requestAnimationFrame callbacks.";let se=0;class ne{constructor(e,t,i){this[te]={id:++se,active:!1,animationFrame:!1,device:e,session:t,sessionId:i}}get session(){return this[te].session}getViewerPose(e){if(!this[te].animationFrame)throw new DOMException(re,"InvalidStateError");if(!this[te].active)throw new DOMException(ie,"InvalidStateError");const t=this[te].device,i=this[te].session;i[fe].viewerSpace._ensurePoseUpdated(t,this[te].id),e._ensurePoseUpdated(t,this[te].id);let r=e._getSpaceRelativeTransform(i[fe].viewerSpace);const s=[];for(const r of i[fe].viewSpaces){r._ensurePoseUpdated(t,this[te].id);let i=e._getSpaceRelativeTransform(r),n=new ee(t,i,r.eye,this[te].sessionId,r.viewIndex);s.push(n)}return new Y(r,s,!1)}getPose(e,t){if(!this[te].active)throw new DOMException(ie,"InvalidStateError");const i=this[te].device;if("target-ray"===e._specialType||"grip"===e._specialType)return i.getInputPose(e._inputSource,t,e._specialType);{e._ensurePoseUpdated(i,this[te].id),t._ensurePoseUpdated(i,this[te].id);let r=t._getSpaceRelativeTransform(e);return r?new XRPose(r,!1):null}}}const ae=Symbol("@@webxr-polyfill/XRRenderState"),oe=Object.freeze({depthNear:.1,depthFar:1e3,inlineVerticalFieldOfView:null,baseLayer:null});class le{constructor(e={}){const t=Object.assign({},oe,e);this[ae]={config:t}}get depthNear(){return this[ae].config.depthNear}get depthFar(){return this[ae].config.depthFar}get inlineVerticalFieldOfView(){return this[ae].config.inlineVerticalFieldOfView}get baseLayer(){return this[ae].config.baseLayer}}const Ae=Symbol("@@webxr-polyfill/XRInputSourceEvent");class he extends Event{constructor(e,t){super(e,t),this[Ae]={frame:t.frame,inputSource:t.inputSource},Object.setPrototypeOf(this,he.prototype)}get frame(){return this[Ae].frame}get inputSource(){return this[Ae].inputSource}}const ce=Symbol("@@webxr-polyfill/XRSessionEvent");class de extends Event{constructor(e,t){super(e,t),this[ce]={session:t.session},Object.setPrototypeOf(this,de.prototype)}get session(){return this[ce].session}}const ue=Symbol("@@webxr-polyfill/XRInputSourcesChangeEvent");class pe extends Event{constructor(e,t){super(e,t),this[ue]={session:t.session,added:t.added,removed:t.removed},Object.setPrototypeOf(this,pe.prototype)}get session(){return this[ue].session}get added(){return this[ue].added}get removed(){return this[ue].removed}}const fe=Symbol("@@webxr-polyfill/XRSession");class me extends L{constructor(e){super(e)}get eye(){return this._specialType}_onPoseUpdate(e){this._inverseBaseMatrix=e.getBaseViewMatrix(this._specialType)}}class ge extends i{constructor(e,t,i){super();let r="inline"!=t,s=new le({inlineVerticalFieldOfView:r?null:.5*Math.PI});const n=r?[new me("left"),new me("right")]:[new me("none")];Object.freeze(n),this[fe]={device:e,mode:t,immersive:r,ended:!1,suspended:!1,frameCallbacks:[],currentFrameCallbacks:null,frameHandle:0,deviceFrameHandle:null,id:i,activeRenderState:s,pendingRenderState:null,viewerSpace:new Q("viewer"),get viewSpaces(){return e.getViewSpaces(t)||n},currentInputSources:[]},this[fe].onDeviceFrame=(()=>{if(this[fe].ended||this[fe].suspended)return;if(this[fe].deviceFrameHandle=null,this[fe].startDeviceFrameLoop(),null!==this[fe].pendingRenderState&&(this[fe].activeRenderState=new 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de("end",{session:this}))}),e.addEventListener("@@webxr-polyfill/vr-present-end",this[fe].onPresentationEnd),this[fe].onPresentationStart=(e=>{e!==this[fe].id&&(this[fe].suspended=!0,this[fe].stopDeviceFrameLoop(),this.dispatchEvent("blur",{session:this}))}),e.addEventListener("@@webxr-polyfill/vr-present-start",this[fe].onPresentationStart),this[fe].onSelectStart=(e=>{e.sessionId===this[fe].id&&this[fe].dispatchInputSourceEvent("selectstart",e.inputSource)}),e.addEventListener("@@webxr-polyfill/input-select-start",this[fe].onSelectStart),this[fe].onSelectEnd=(e=>{e.sessionId===this[fe].id&&(this[fe].dispatchInputSourceEvent("select",e.inputSource),this[fe].dispatchInputSourceEvent("selectend",e.inputSource))}),e.addEventListener("@@webxr-polyfill/input-select-end",this[fe].onSelectEnd),this[fe].onSqueezeStart=(e=>{e.sessionId===this[fe].id&&this[fe].dispatchInputSourceEvent("squeezestart",e.inputSource)}),e.addEventListener("@@webxr-polyfill/input-squeeze-start",this[fe].onSqueezeStart),this[fe].onSqueezeEnd=(e=>{e.sessionId===this[fe].id&&(this[fe].dispatchInputSourceEvent("squeezeend",e.inputSource),this[fe].dispatchInputSourceEvent("squeeze",e.inputSource))}),e.addEventListener("@@webxr-polyfill/input-squeeze-end",this[fe].onSqueezeEnd),this[fe].dispatchInputSourceEvent=((t,i)=>{const r=new ne(e,this,this[fe].id),s=new he(t,{frame:r,inputSource:i});r[te].active=!0,this.dispatchEvent(t,s),r[te].active=!1}),this[fe].startDeviceFrameLoop(),this.onblur=void 0,this.onfocus=void 0,this.onresetpose=void 0,this.onend=void 0,this.onselect=void 0,this.onselectstart=void 0,this.onselectend=void 0}get renderState(){return this[fe].activeRenderState}get environmentBlendMode(){return this[fe].device.environmentBlendMode||"opaque"}async requestReferenceSpace(e){if(this[fe].ended)return;if(!G.includes(e))throw new TypeError(`XRReferenceSpaceType must be one of ${G}`);if(!this[fe].device.doesSessionSupportReferenceSpace(this[fe].id,e))throw new DOMException(`The ${e} reference space is not supported by this session.`,"NotSupportedError");if("viewer"===e)return this[fe].viewerSpace;let t=await this[fe].device.requestFrameOfReferenceTransform(e);if("bounded-floor"===e){if(!t)throw new DOMException(`${e} XRReferenceSpace not supported by this device.`,"NotSupportedError");if(!this[fe].device.requestStageBounds())throw new DOMException(`${e} XRReferenceSpace not supported by this device.`,"NotSupportedError");throw new DOMException(`The WebXR polyfill does not support the ${e} reference space yet.`,"NotSupportedError")}return new Q(e,t)}requestAnimationFrame(e){if(this[fe].ended)return;const t=++this[fe].frameHandle;return this[fe].frameCallbacks.push({handle:t,callback:e,cancelled:!1}),t}cancelAnimationFrame(e){let t=this[fe].frameCallbacks,i=t.findIndex(t=>t&&t.handle===e);i>-1&&(t[i].cancelled=!0,t.splice(i,1)),(t=this[fe].currentFrameCallbacks)&&(i=t.findIndex(t=>t&&t.handle===e))>-1&&(t[i].cancelled=!0)}get inputSources(){return this[fe].device.getInputSources()}async end(){if(!this[fe].ended)return this[fe].immersive&&(this[fe].ended=!0,this[fe].device.removeEventListener("@@webxr-polyfill/vr-present-start",this[fe].onPresentationStart),this[fe].device.removeEventListener("@@webxr-polyfill/vr-present-end",this[fe].onPresentationEnd),this[fe].device.removeEventListener("@@webxr-polyfill/input-select-start",this[fe].onSelectStart),this[fe].device.removeEventListener("@@webxr-polyfill/input-select-end",this[fe].onSelectEnd),this.dispatchEvent("end",new de("end",{session:this}))),this[fe].stopDeviceFrameLoop(),this[fe].device.endSession(this[fe].id)}updateRenderState(e){if(this[fe].ended){throw new Error("Can't call updateRenderState on an XRSession that has already ended.")}if(e.baseLayer&&e.baseLayer._session!==this){throw new Error("Called updateRenderState with a base layer that was created by a different session.")}if(null!==e.inlineVerticalFieldOfView&&void 0!==e.inlineVerticalFieldOfView){if(this[fe].immersive){throw new Error("inlineVerticalFieldOfView must not be set for an 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B(e,t,i,r){this.gl=e,this.cardboardUI=t,this.bufferScale=i,this.dirtySubmitFrameBindings=r,this.ctxAttribs=e.getContextAttributes(),this.instanceExt=e.getExtension("ANGLE_instanced_arrays"),this.meshWidth=20,this.meshHeight=20,this.bufferWidth=e.drawingBufferWidth,this.bufferHeight=e.drawingBufferHeight,this.realBindFramebuffer=e.bindFramebuffer,this.realEnable=e.enable,this.realDisable=e.disable,this.realColorMask=e.colorMask,this.realClearColor=e.clearColor,this.realViewport=e.viewport,o()||(this.realCanvasWidth=Object.getOwnPropertyDescriptor(e.canvas.__proto__,"width"),this.realCanvasHeight=Object.getOwnPropertyDescriptor(e.canvas.__proto__,"height")),this.isPatched=!1,this.lastBoundFramebuffer=null,this.cullFace=!1,this.depthTest=!1,this.blend=!1,this.scissorTest=!1,this.stencilTest=!1,this.viewport=[0,0,0,0],this.colorMask=[!0,!0,!0,!0],this.clearColor=[0,0,0,0],this.attribs={position:0,texCoord:1},this.program=w(e,T,P,this.attribs),this.uniforms=y(e,this.program),this.viewportOffsetScale=new Float32Array(8),this.setTextureBounds(),this.vertexBuffer=e.createBuffer(),this.indexBuffer=e.createBuffer(),this.indexCount=0,this.renderTarget=e.createTexture(),this.framebuffer=e.createFramebuffer(),this.depthStencilBuffer=null,this.depthBuffer=null,this.stencilBuffer=null,this.ctxAttribs.depth&&this.ctxAttribs.stencil?this.depthStencilBuffer=e.createRenderbuffer():this.ctxAttribs.depth?this.depthBuffer=e.createRenderbuffer():this.ctxAttribs.stencil&&(this.stencilBuffer=e.createRenderbuffer()),this.patch(),this.onResize()}B.prototype.destroy=function(){var e=this.gl;this.unpatch(),e.deleteProgram(this.program),e.deleteBuffer(this.vertexBuffer),e.deleteBuffer(this.indexBuffer),e.deleteTexture(this.renderTarget),e.deleteFramebuffer(this.framebuffer),this.depthStencilBuffer&&e.deleteRenderbuffer(this.depthStencilBuffer),this.depthBuffer&&e.deleteRenderbuffer(this.depthBuffer),this.stencilBuffer&&e.deleteRenderbuffer(this.stencilBuffer),this.cardboardUI&&this.cardboardUI.destroy()},B.prototype.onResize=function(){var e=this.gl,t=this,i=[e.RENDERBUFFER_BINDING,e.TEXTURE_BINDING_2D,e.TEXTURE0];R(e,i,function(e){t.realBindFramebuffer.call(e,e.FRAMEBUFFER,null),t.scissorTest&&t.realDisable.call(e,e.SCISSOR_TEST),t.realColorMask.call(e,!0,!0,!0,!0),t.realViewport.call(e,0,0,e.drawingBufferWidth,e.drawingBufferHeight),t.realClearColor.call(e,0,0,0,1),e.clear(e.COLOR_BUFFER_BIT),t.realBindFramebuffer.call(e,e.FRAMEBUFFER,t.framebuffer),e.bindTexture(e.TEXTURE_2D,t.renderTarget),e.texImage2D(e.TEXTURE_2D,0,t.ctxAttribs.alpha?e.RGBA:e.RGB,t.bufferWidth,t.bufferHeight,0,t.ctxAttribs.alpha?e.RGBA:e.RGB,e.UNSIGNED_BYTE,null),e.texParameteri(e.TEXTURE_2D,e.TEXTURE_MAG_FILTER,e.LINEAR),e.texParameteri(e.TEXTURE_2D,e.TEXTURE_MIN_FILTER,e.LINEAR),e.texParameteri(e.TEXTURE_2D,e.TEXTURE_WRAP_S,e.CLAMP_TO_EDGE),e.texParameteri(e.TEXTURE_2D,e.TEXTURE_WRAP_T,e.CLAMP_TO_EDGE),e.framebufferTexture2D(e.FRAMEBUFFER,e.COLOR_ATTACHMENT0,e.TEXTURE_2D,t.renderTarget,0),t.ctxAttribs.depth&&t.ctxAttribs.stencil?(e.bindRenderbuffer(e.RENDERBUFFER,t.depthStencilBuffer),e.renderbufferStorage(e.RENDERBUFFER,e.DEPTH_STENCIL,t.bufferWidth,t.bufferHeight),e.framebufferRenderbuffer(e.FRAMEBUFFER,e.DEPTH_STENCIL_ATTACHMENT,e.RENDERBUFFER,t.depthStencilBuffer)):t.ctxAttribs.depth?(e.bindRenderbuffer(e.RENDERBUFFER,t.depthBuffer),e.renderbufferStorage(e.RENDERBUFFER,e.DEPTH_COMPONENT16,t.bufferWidth,t.bufferHeight),e.framebufferRenderbuffer(e.FRAMEBUFFER,e.DEPTH_ATTACHMENT,e.RENDERBUFFER,t.depthBuffer)):t.ctxAttribs.stencil&&(e.bindRenderbuffer(e.RENDERBUFFER,t.stencilBuffer),e.renderbufferStorage(e.RENDERBUFFER,e.STENCIL_INDEX8,t.bufferWidth,t.bufferHeight),e.framebufferRenderbuffer(e.FRAMEBUFFER,e.STENCIL_ATTACHMENT,e.RENDERBUFFER,t.stencilBuffer)),!e.checkFramebufferStatus(e.FRAMEBUFFER)===e.FRAMEBUFFER_COMPLETE&&console.error("Framebuffer incomplete!"),t.realBindFramebuffer.call(e,e.FRAMEBUFFER,t.lastBoundFramebuffer),t.scissorTest&&t.realEnable.call(e,e.SCISSOR_TEST),t.realColorMask.apply(e,t.colorMask),t.realViewport.apply(e,t.viewport),t.realClearColor.apply(e,t.clearColor)}),this.cardboardUI&&this.cardboardUI.onResize()},B.prototype.patch=function(){if(!this.isPatched){var e=this,t=this.gl.canvas,i=this.gl;o()||(t.width=m()*this.bufferScale,t.height=g()*this.bufferScale,Object.defineProperty(t,"width",{configurable:!0,enumerable:!0,get:function(){return e.bufferWidth},set:function(i){e.bufferWidth=i,e.realCanvasWidth.set.call(t,i),e.onResize()}}),Object.defineProperty(t,"height",{configurable:!0,enumerable:!0,get:function(){return e.bufferHeight},set:function(i){e.bufferHeight=i,e.realCanvasHeight.set.call(t,i),e.onResize()}})),this.lastBoundFramebuffer=i.getParameter(i.FRAMEBUFFER_BINDING),null==this.lastBoundFramebuffer&&(this.lastBoundFramebuffer=this.framebuffer,this.gl.bindFramebuffer(i.FRAMEBUFFER,this.framebuffer)),this.gl.bindFramebuffer=function(t,r){e.lastBoundFramebuffer=r||e.framebuffer,e.realBindFramebuffer.call(i,t,e.lastBoundFramebuffer)},this.cullFace=i.getParameter(i.CULL_FACE),this.depthTest=i.getParameter(i.DEPTH_TEST),this.blend=i.getParameter(i.BLEND),this.scissorTest=i.getParameter(i.SCISSOR_TEST),this.stencilTest=i.getParameter(i.STENCIL_TEST),i.enable=function(t){switch(t){case i.CULL_FACE:e.cullFace=!0;break;case i.DEPTH_TEST:e.depthTest=!0;break;case i.BLEND:e.blend=!0;break;case i.SCISSOR_TEST:e.scissorTest=!0;break;case i.STENCIL_TEST:e.stencilTest=!0}e.realEnable.call(i,t)},i.disable=function(t){switch(t){case i.CULL_FACE:e.cullFace=!1;break;case i.DEPTH_TEST:e.depthTest=!1;break;case i.BLEND:e.blend=!1;break;case i.SCISSOR_TEST:e.scissorTest=!1;break;case i.STENCIL_TEST:e.stencilTest=!1}e.realDisable.call(i,t)},this.colorMask=i.getParameter(i.COLOR_WRITEMASK),i.colorMask=function(t,r,s,n){e.colorMask[0]=t,e.colorMask[1]=r,e.colorMask[2]=s,e.colorMask[3]=n,e.realColorMask.call(i,t,r,s,n)},this.clearColor=i.getParameter(i.COLOR_CLEAR_VALUE),i.clearColor=function(t,r,s,n){e.clearColor[0]=t,e.clearColor[1]=r,e.clearColor[2]=s,e.clearColor[3]=n,e.realClearColor.call(i,t,r,s,n)},this.viewport=i.getParameter(i.VIEWPORT),i.viewport=function(t,r,s,n){e.viewport[0]=t,e.viewport[1]=r,e.viewport[2]=s,e.viewport[3]=n,e.realViewport.call(i,t,r,s,n)},this.isPatched=!0,S(t)}},B.prototype.unpatch=function(){if(this.isPatched){var e=this.gl,t=this.gl.canvas;o()||(Object.defineProperty(t,"width",this.realCanvasWidth),Object.defineProperty(t,"height",this.realCanvasHeight)),t.width=this.bufferWidth,t.height=this.bufferHeight,e.bindFramebuffer=this.realBindFramebuffer,e.enable=this.realEnable,e.disable=this.realDisable,e.colorMask=this.realColorMask,e.clearColor=this.realClearColor,e.viewport=this.realViewport,this.lastBoundFramebuffer==this.framebuffer&&e.bindFramebuffer(e.FRAMEBUFFER,null),this.isPatched=!1,setTimeout(function(){S(t)},1)}},B.prototype.setTextureBounds=function(e,t){e||(e=[0,0,.5,1]),t||(t=[.5,0,.5,1]),this.viewportOffsetScale[0]=e[0],this.viewportOffsetScale[1]=e[1],this.viewportOffsetScale[2]=e[2],this.viewportOffsetScale[3]=e[3],this.viewportOffsetScale[4]=t[0],this.viewportOffsetScale[5]=t[1],this.viewportOffsetScale[6]=t[2],this.viewportOffsetScale[7]=t[3]},B.prototype.submitFrame=function(){var e=this.gl,t=this,i=[];if(this.dirtySubmitFrameBindings||i.push(e.CURRENT_PROGRAM,e.ARRAY_BUFFER_BINDING,e.ELEMENT_ARRAY_BUFFER_BINDING,e.TEXTURE_BINDING_2D,e.TEXTURE0),R(e,i,function(e){t.realBindFramebuffer.call(e,e.FRAMEBUFFER,null);var i=0,r=0;t.instanceExt&&(i=e.getVertexAttrib(t.attribs.position,t.instanceExt.VERTEX_ATTRIB_ARRAY_DIVISOR_ANGLE),r=e.getVertexAttrib(t.attribs.texCoord,t.instanceExt.VERTEX_ATTRIB_ARRAY_DIVISOR_ANGLE)),t.cullFace&&t.realDisable.call(e,e.CULL_FACE),t.depthTest&&t.realDisable.call(e,e.DEPTH_TEST),t.blend&&t.realDisable.call(e,e.BLEND),t.scissorTest&&t.realDisable.call(e,e.SCISSOR_TEST),t.stencilTest&&t.realDisable.call(e,e.STENCIL_TEST),t.realColorMask.call(e,!0,!0,!0,!0),t.realViewport.call(e,0,0,e.drawingBufferWidth,e.drawingBufferHeight),(t.ctxAttribs.alpha||o())&&(t.realClearColor.call(e,0,0,0,1),e.clear(e.COLOR_BUFFER_BIT)),e.useProgram(t.program),e.bindBuffer(e.ELEMENT_ARRAY_BUFFER,t.indexBuffer),e.bindBuffer(e.ARRAY_BUFFER,t.vertexBuffer),e.enableVertexAttribArray(t.attribs.position),e.enableVertexAttribArray(t.attribs.texCoord),e.vertexAttribPointer(t.attribs.position,2,e.FLOAT,!1,20,0),e.vertexAttribPointer(t.attribs.texCoord,3,e.FLOAT,!1,20,8),t.instanceExt&&(0!=i&&t.instanceExt.vertexAttribDivisorANGLE(t.attribs.position,0),0!=r&&t.instanceExt.vertexAttribDivisorANGLE(t.attribs.texCoord,0)),e.activeTexture(e.TEXTURE0),e.uniform1i(t.uniforms.diffuse,0),e.bindTexture(e.TEXTURE_2D,t.renderTarget),e.uniform4fv(t.uniforms.viewportOffsetScale,t.viewportOffsetScale),e.drawElements(e.TRIANGLES,t.indexCount,e.UNSIGNED_SHORT,0),t.cardboardUI&&t.cardboardUI.renderNoState(),t.realBindFramebuffer.call(t.gl,e.FRAMEBUFFER,t.framebuffer),t.ctxAttribs.preserveDrawingBuffer||(t.realClearColor.call(e,0,0,0,0),e.clear(e.COLOR_BUFFER_BIT)),t.dirtySubmitFrameBindings||t.realBindFramebuffer.call(e,e.FRAMEBUFFER,t.lastBoundFramebuffer),t.cullFace&&t.realEnable.call(e,e.CULL_FACE),t.depthTest&&t.realEnable.call(e,e.DEPTH_TEST),t.blend&&t.realEnable.call(e,e.BLEND),t.scissorTest&&t.realEnable.call(e,e.SCISSOR_TEST),t.stencilTest&&t.realEnable.call(e,e.STENCIL_TEST),t.realColorMask.apply(e,t.colorMask),t.realViewport.apply(e,t.viewport),!t.ctxAttribs.alpha&&t.ctxAttribs.preserveDrawingBuffer||t.realClearColor.apply(e,t.clearColor),t.instanceExt&&(0!=i&&t.instanceExt.vertexAttribDivisorANGLE(t.attribs.position,i),0!=r&&t.instanceExt.vertexAttribDivisorANGLE(t.attribs.texCoord,r))}),o()){var r=e.canvas;r.width==t.bufferWidth&&r.height==t.bufferHeight||(t.bufferWidth=r.width,t.bufferHeight=r.height,t.onResize())}},B.prototype.updateDeviceInfo=function(e){var t=this.gl,i=this,r=[t.ARRAY_BUFFER_BINDING,t.ELEMENT_ARRAY_BUFFER_BINDING];R(t,r,function(t){var r=i.computeMeshVertices_(i.meshWidth,i.meshHeight,e);if(t.bindBuffer(t.ARRAY_BUFFER,i.vertexBuffer),t.bufferData(t.ARRAY_BUFFER,r,t.STATIC_DRAW),!i.indexCount){var s=i.computeMeshIndices_(i.meshWidth,i.meshHeight);t.bindBuffer(t.ELEMENT_ARRAY_BUFFER,i.indexBuffer),t.bufferData(t.ELEMENT_ARRAY_BUFFER,s,t.STATIC_DRAW),i.indexCount=s.length}})},B.prototype.computeMeshVertices_=function(e,t,i){for(var r=new Float32Array(2*e*t*5),s=i.getLeftEyeVisibleTanAngles(),n=i.getLeftEyeNoLensTanAngles(),o=i.getLeftEyeVisibleScreenRect(n),l=0,A=0;A<2;A++){for(var h=0;h<t;h++)for(var c=0;c<e;c++,l++){var d=c/(e-1),u=h/(t-1),p=d,f=u,m=a(s[0],s[2],d),g=a(s[3],s[1],u),v=Math.sqrt(m*m+g*g),w=i.distortion.distortInverse(v),y=m*w/v,b=g*w/v;d=(y-n[0])/(n[2]-n[0]),u=(b-n[3])/(n[1]-n[3]),d=2*(o.x+d*o.width-.5),u=2*(o.y+u*o.height-.5),r[5*l+0]=d,r[5*l+1]=u,r[5*l+2]=p,r[5*l+3]=f,r[5*l+4]=A}var E=s[2]-s[0];s[0]=-(E+s[0]),s[2]=E-s[2],E=n[2]-n[0],n[0]=-(E+n[0]),n[2]=E-n[2],o.x=1-(o.x+o.width)}return r},B.prototype.computeMeshIndices_=function(e,t){for(var i=new Uint16Array(2*(e-1)*(t-1)*6),r=e/2,s=t/2,n=0,a=0,o=0;o<2;o++)for(var l=0;l<t;l++)for(var A=0;A<e;A++,n++)0!=A&&0!=l&&(A<=r==l<=s?(i[a++]=n,i[a++]=n-e-1,i[a++]=n-e,i[a++]=n-e-1,i[a++]=n,i[a++]=n-1):(i[a++]=n-1,i[a++]=n-e,i[a++]=n,i[a++]=n-e,i[a++]=n-1,i[a++]=n-e-1));return i},B.prototype.getOwnPropertyDescriptor_=function(e,t){var i=Object.getOwnPropertyDescriptor(e,t);return void 0!==i.get&&void 0!==i.set||(i.configurable=!0,i.enumerable=!0,i.get=function(){return this.getAttribute(t)},i.set=function(e){this.setAttribute(t,e)}),i};var C=["attribute vec2 position;","uniform mat4 projectionMat;","void main() {","  gl_Position = projectionMat * vec4( position, -1.0, 1.0 );","}"].join("\n"),D=["precision mediump float;","uniform vec4 color;","void main() {","  gl_FragColor = color;","}"].join("\n"),I=Math.PI/180,L=.3125;function O(e){this.gl=e,this.attribs={position:0},this.program=w(e,C,D,this.attribs),this.uniforms=y(e,this.program),this.vertexBuffer=e.createBuffer(),this.gearOffset=0,this.gearVertexCount=0,this.arrowOffset=0,this.arrowVertexCount=0,this.projMat=new Float32Array(16),this.listener=null,this.onResize()}function N(e){this.coefficients=e}O.prototype.destroy=function(){var e=this.gl;this.listener&&e.canvas.removeEventListener("click",this.listener,!1),e.deleteProgram(this.program),e.deleteBuffer(this.vertexBuffer)},O.prototype.listen=function(e,t){var i=this.gl.canvas;this.listener=function(r){var s=i.clientWidth/2;r.clientX>s-42&&r.clientX<s+42&&r.clientY>i.clientHeight-42?e(r):r.clientX<42&&r.clientY<42&&t(r)},i.addEventListener("click",this.listener,!1)},O.prototype.onResize=function(){var e=this.gl,t=this,i=[e.ARRAY_BUFFER_BINDING];R(e,i,function(e){var i=[],r=e.drawingBufferWidth/2,s=Math.max(screen.width,screen.height)*window.devicePixelRatio,n=e.drawingBufferWidth/s,a=n*window.devicePixelRatio,o=4*a/2,l=42*a,A=28*a/2,h=14*a;function c(e,t){var s=(90-e)*I,n=Math.cos(s),a=Math.sin(s);i.push(L*n*A+r,L*a*A+A),i.push(t*n*A+r,t*a*A+A)}i.push(r-o,l),i.push(r-o,e.drawingBufferHeight),i.push(r+o,l),i.push(r+o,e.drawingBufferHeight),t.gearOffset=i.length/2;for(var d=0;d<=6;d++){var u=60*d;c(u,1),c(u+12,1),c(u+20,.75),c(u+40,.75),c(u+48,1)}function p(t,r){i.push(h+t,e.drawingBufferHeight-h-r)}t.gearVertexCount=i.length/2-t.gearOffset,t.arrowOffset=i.length/2;var f=o/Math.sin(45*I);p(0,A),p(A,0),p(A+f,f),p(f,A+f),p(f,A-f),p(0,A),p(A,2*A),p(A+f,2*A-f),p(f,A-f),p(0,A),p(f,A-o),p(28*a,A-o),p(f,A+o),p(28*a,A+o),t.arrowVertexCount=i.length/2-t.arrowOffset,e.bindBuffer(e.ARRAY_BUFFER,t.vertexBuffer),e.bufferData(e.ARRAY_BUFFER,new Float32Array(i),e.STATIC_DRAW)})},O.prototype.render=function(){var e=this.gl,t=this,i=[e.CULL_FACE,e.DEPTH_TEST,e.BLEND,e.SCISSOR_TEST,e.STENCIL_TEST,e.COLOR_WRITEMASK,e.VIEWPORT,e.CURRENT_PROGRAM,e.ARRAY_BUFFER_BINDING];R(e,i,function(e){e.disable(e.CULL_FACE),e.disable(e.DEPTH_TEST),e.disable(e.BLEND),e.disable(e.SCISSOR_TEST),e.disable(e.STENCIL_TEST),e.colorMask(!0,!0,!0,!0),e.viewport(0,0,e.drawingBufferWidth,e.drawingBufferHeight),t.renderNoState()})},O.prototype.renderNoState=function(){var e,t,i,r,s,n,a,o,l,A,h=this.gl;h.useProgram(this.program),h.bindBuffer(h.ARRAY_BUFFER,this.vertexBuffer),h.enableVertexAttribArray(this.attribs.position),h.vertexAttribPointer(this.attribs.position,2,h.FLOAT,!1,8,0),h.uniform4f(this.uniforms.color,1,1,1,1),e=this.projMat,t=0,i=h.drawingBufferWidth,r=0,s=h.drawingBufferHeight,o=1/(t-i),l=1/(r-s),A=1/((n=.1)-(a=1024)),e[0]=-2*o,e[1]=0,e[2]=0,e[3]=0,e[4]=0,e[5]=-2*l,e[6]=0,e[7]=0,e[8]=0,e[9]=0,e[10]=2*A,e[11]=0,e[12]=(t+i)*o,e[13]=(s+r)*l,e[14]=(a+n)*A,e[15]=1,h.uniformMatrix4fv(this.uniforms.projectionMat,!1,this.projMat),h.drawArrays(h.TRIANGLE_STRIP,0,4),h.drawArrays(h.TRIANGLE_STRIP,this.gearOffset,this.gearVertexCount),h.drawArrays(h.TRIANGLE_STRIP,this.arrowOffset,this.arrowVertexCount)},N.prototype.distortInverse=function(e){for(var t=0,i=1,r=e-this.distort(t);Math.abs(i-t)>1e-4;){var s=e-this.distort(i),n=i-s*((i-t)/(s-r));t=i,i=n,r=s}return i},N.prototype.distort=function(e){for(var t=e*e,i=0,r=0;r<this.coefficients.length;r++)i=t*(i+this.coefficients[r]);return(i+1)*e};var G=Math.PI/180,Q=180/Math.PI,k=function(e,t,i){this.x=e||0,this.y=t||0,this.z=i||0};k.prototype={constructor:k,set:function(e,t,i){return this.x=e,this.y=t,this.z=i,this},copy:function(e){return this.x=e.x,this.y=e.y,this.z=e.z,this},length:function(){return Math.sqrt(this.x*this.x+this.y*this.y+this.z*this.z)},normalize:function(){var e=this.length();if(0!==e){var t=1/e;this.multiplyScalar(t)}else this.x=0,this.y=0,this.z=0;return this},multiplyScalar:function(e){this.x*=e,this.y*=e,this.z*=e},applyQuaternion:function(e){var t=this.x,i=this.y,r=this.z,s=e.x,n=e.y,a=e.z,o=e.w,l=o*t+n*r-a*i,A=o*i+a*t-s*r,h=o*r+s*i-n*t,c=-s*t-n*i-a*r;return this.x=l*o+c*-s+A*-a-h*-n,this.y=A*o+c*-n+h*-s-l*-a,this.z=h*o+c*-a+l*-n-A*-s,this},dot:function(e){return this.x*e.x+this.y*e.y+this.z*e.z},crossVectors:function(e,t){var i=e.x,r=e.y,s=e.z,n=t.x,a=t.y,o=t.z;return this.x=r*o-s*a,this.y=s*n-i*o,this.z=i*a-r*n,this}};var z,V,U=function(e,t,i,r){this.x=e||0,this.y=t||0,this.z=i||0,this.w=void 0!==r?r:1};function H(e){this.width=e.width||m(),this.height=e.height||g(),this.widthMeters=e.widthMeters,this.heightMeters=e.heightMeters,this.bevelMeters=e.bevelMeters}U.prototype={constructor:U,set:function(e,t,i,r){return this.x=e,this.y=t,this.z=i,this.w=r,this},copy:function(e){return this.x=e.x,this.y=e.y,this.z=e.z,this.w=e.w,this},setFromEulerXYZ:function(e,t,i){var r=Math.cos(e/2),s=Math.cos(t/2),n=Math.cos(i/2),a=Math.sin(e/2),o=Math.sin(t/2),l=Math.sin(i/2);return this.x=a*s*n+r*o*l,this.y=r*o*n-a*s*l,this.z=r*s*l+a*o*n,this.w=r*s*n-a*o*l,this},setFromEulerYXZ:function(e,t,i){var r=Math.cos(e/2),s=Math.cos(t/2),n=Math.cos(i/2),a=Math.sin(e/2),o=Math.sin(t/2),l=Math.sin(i/2);return this.x=a*s*n+r*o*l,this.y=r*o*n-a*s*l,this.z=r*s*l-a*o*n,this.w=r*s*n+a*o*l,this},setFromAxisAngle:function(e,t){var i=t/2,r=Math.sin(i);return this.x=e.x*r,this.y=e.y*r,this.z=e.z*r,this.w=Math.cos(i),this},multiply:function(e){return this.multiplyQuaternions(this,e)},multiplyQuaternions:function(e,t){var i=e.x,r=e.y,s=e.z,n=e.w,a=t.x,o=t.y,l=t.z,A=t.w;return this.x=i*A+n*a+r*l-s*o,this.y=r*A+n*o+s*a-i*l,this.z=s*A+n*l+i*o-r*a,this.w=n*A-i*a-r*o-s*l,this},inverse:function(){return this.x*=-1,this.y*=-1,this.z*=-1,this.normalize(),this},normalize:function(){var e=Math.sqrt(this.x*this.x+this.y*this.y+this.z*this.z+this.w*this.w);return 0===e?(this.x=0,this.y=0,this.z=0,this.w=1):(e=1/e,this.x=this.x*e,this.y=this.y*e,this.z=this.z*e,this.w=this.w*e),this},slerp:function(e,t){if(0===t)return this;if(1===t)return this.copy(e);var i=this.x,r=this.y,s=this.z,n=this.w,a=n*e.w+i*e.x+r*e.y+s*e.z;if(a<0?(this.w=-e.w,this.x=-e.x,this.y=-e.y,this.z=-e.z,a=-a):this.copy(e),a>=1)return this.w=n,this.x=i,this.y=r,this.z=s,this;var o=Math.acos(a),l=Math.sqrt(1-a*a);if(Math.abs(l)<.001)return this.w=.5*(n+this.w),this.x=.5*(i+this.x),this.y=.5*(r+this.y),this.z=.5*(s+this.z),this;var A=Math.sin((1-t)*o)/l,h=Math.sin(t*o)/l;return this.w=n*A+this.w*h,this.x=i*A+this.x*h,this.y=r*A+this.y*h,this.z=s*A+this.z*h,this},setFromUnitVectors:function(e,t){return void 0===z&&(z=new k),(V=e.dot(t)+1)<1e-6?(V=0,Math.abs(e.x)>Math.abs(e.z)?z.set(-e.y,e.x,0):z.set(0,-e.z,e.y)):z.crossVectors(e,t),this.x=z.x,this.y=z.y,this.z=z.z,this.w=V,this.normalize(),this}};var X=new H({widthMeters:.11,heightMeters:.062,bevelMeters:.004}),W=new H({widthMeters:.1038,heightMeters:.0584,bevelMeters:.004}),j={CardboardV1:new Y({id:"CardboardV1",label:"Cardboard I/O 2014",fov:40,interLensDistance:.06,baselineLensDistance:.035,screenLensDistance:.042,distortionCoefficients:[.441,.156],inverseCoefficients:[-.4410035,.42756155,-.4804439,.5460139,-.58821183,.5733938,-.48303202,.33299083,-.17573841,.0651772,-.01488963,.001559834]}),CardboardV2:new Y({id:"CardboardV2",label:"Cardboard I/O 2015",fov:60,interLensDistance:.064,baselineLensDistance:.035,screenLensDistance:.039,distortionCoefficients:[.34,.55],inverseCoefficients:[-.33836704,-.18162185,.862655,-1.2462051,1.0560602,-.58208317,.21609078,-.05444823,.009177956,-.0009904169,6183535e-11,-16981803e-13]})};function q(e,t){this.viewer=j.CardboardV2,this.updateDeviceParams(e),this.distortion=new N(this.viewer.distortionCoefficients);for(var i=0;i<t.length;i++){var r=t[i];j[r.id]=new Y(r)}}function Y(e){this.id=e.id,this.label=e.label,this.fov=e.fov,this.interLensDistance=e.interLensDistance,this.baselineLensDistance=e.baselineLensDistance,this.screenLensDistance=e.screenLensDistance,this.distortionCoefficients=e.distortionCoefficients,this.inverseCoefficients=e.inverseCoefficients}q.prototype.updateDeviceParams=function(e){this.device=this.determineDevice_(e)||this.device},q.prototype.getDevice=function(){return this.device},q.prototype.setViewer=function(e){this.viewer=e,this.distortion=new N(this.viewer.distortionCoefficients)},q.prototype.determineDevice_=function(e){if(!e)return o()?(console.warn("Using fallback iOS device measurements."),W):(console.warn("Using fallback Android device measurements."),X);var t=.0254/e.xdpi,i=.0254/e.ydpi,r=m(),s=g();return new H({widthMeters:t*r,heightMeters:i*s,bevelMeters:.001*e.bevelMm})},q.prototype.getDistortedFieldOfViewLeftEye=function(){var e=this.viewer,t=this.device,i=this.distortion,r=e.screenLensDistance,s=(t.widthMeters-e.interLensDistance)/2,n=e.interLensDistance/2,a=e.baselineLensDistance-t.bevelMeters,o=t.heightMeters-a,l=Q*Math.atan(i.distort(s/r)),A=Q*Math.atan(i.distort(n/r)),h=Q*Math.atan(i.distort(a/r)),c=Q*Math.atan(i.distort(o/r));return{leftDegrees:Math.min(l,e.fov),rightDegrees:Math.min(A,e.fov),downDegrees:Math.min(h,e.fov),upDegrees:Math.min(c,e.fov)}},q.prototype.getLeftEyeVisibleTanAngles=function(){var e=this.viewer,t=this.device,i=this.distortion,r=Math.tan(-G*e.fov),s=Math.tan(G*e.fov),n=Math.tan(G*e.fov),a=Math.tan(-G*e.fov),o=t.widthMeters/4,l=t.heightMeters/2,A=e.baselineLensDistance-t.bevelMeters-l,h=e.interLensDistance/2-o,c=-A,d=e.screenLensDistance,u=i.distort((h-o)/d),p=i.distort((c+l)/d),f=i.distort((h+o)/d),m=i.distort((c-l)/d),g=new Float32Array(4);return g[0]=Math.max(r,u),g[1]=Math.min(s,p),g[2]=Math.min(n,f),g[3]=Math.max(a,m),g},q.prototype.getLeftEyeNoLensTanAngles=function(){var e=this.viewer,t=this.device,i=this.distortion,r=new Float32Array(4),s=i.distortInverse(Math.tan(-G*e.fov)),n=i.distortInverse(Math.tan(G*e.fov)),a=i.distortInverse(Math.tan(G*e.fov)),o=i.distortInverse(Math.tan(-G*e.fov)),l=t.widthMeters/4,A=t.heightMeters/2,h=e.baselineLensDistance-t.bevelMeters-A,c=e.interLensDistance/2-l,d=-h,u=e.screenLensDistance,p=(c-l)/u,f=(d+A)/u,m=(c+l)/u,g=(d-A)/u;return r[0]=Math.max(s,p),r[1]=Math.min(n,f),r[2]=Math.min(a,m),r[3]=Math.max(o,g),r},q.prototype.getLeftEyeVisibleScreenRect=function(e){var t=this.viewer,i=this.device,r=t.screenLensDistance,s=(i.widthMeters-t.interLensDistance)/2,n=t.baselineLensDistance-i.bevelMeters,a=(e[0]*r+s)/i.widthMeters,o=(e[1]*r+n)/i.heightMeters,l=(e[2]*r+s)/i.widthMeters,A=(e[3]*r+n)/i.heightMeters;return{x:a,y:A,width:l-a,height:o-A}},q.prototype.getFieldOfViewLeftEye=function(e){return e?this.getUndistortedFieldOfViewLeftEye():this.getDistortedFieldOfViewLeftEye()},q.prototype.getFieldOfViewRightEye=function(e){var t=this.getFieldOfViewLeftEye(e);return{leftDegrees:t.rightDegrees,rightDegrees:t.leftDegrees,upDegrees:t.upDegrees,downDegrees:t.downDegrees}},q.prototype.getUndistortedFieldOfViewLeftEye=function(){var e=this.getUndistortedParams_();return{leftDegrees:Q*Math.atan(e.outerDist),rightDegrees:Q*Math.atan(e.innerDist),downDegrees:Q*Math.atan(e.bottomDist),upDegrees:Q*Math.atan(e.topDist)}},q.prototype.getUndistortedViewportLeftEye=function(){var e=this.getUndistortedParams_(),t=this.viewer,i=this.device,r=t.screenLensDistance,s=i.widthMeters/r,n=i.heightMeters/r,a=i.width/s,o=i.height/n,l=Math.round((e.eyePosX-e.outerDist)*a),A=Math.round((e.eyePosY-e.bottomDist)*o);return{x:l,y:A,width:Math.round((e.eyePosX+e.innerDist)*a)-l,height:Math.round((e.eyePosY+e.topDist)*o)-A}},q.prototype.getUndistortedParams_=function(){var e=this.viewer,t=this.device,i=this.distortion,r=e.screenLensDistance,s=e.interLensDistance/2/r,n=t.widthMeters/r,a=t.heightMeters/r,o=n/2-s,l=(e.baselineLensDistance-t.bevelMeters)/r,A=e.fov,h=i.distortInverse(Math.tan(G*A)),c=Math.min(o,h),d=Math.min(s,h),u=Math.min(l,h),p=Math.min(a-l,h);return{outerDist:c,innerDist:d,topDist:p,bottomDist:u,eyePosX:o,eyePosY:l}},q.Viewers=j;var Z={format:1,last_updated:"2019-11-09T17:36:14Z",devices:[{type:"android",rules:[{mdmh:"asus/*/Nexus 7/*"},{ua:"Nexus 7"}],dpi:[320.8,323],bw:3,ac:500},{type:"android",rules:[{mdmh:"asus/*/ASUS_X00PD/*"},{ua:"ASUS_X00PD"}],dpi:245,bw:3,ac:500},{type:"android",rules:[{mdmh:"asus/*/ASUS_X008D/*"},{ua:"ASUS_X008D"}],dpi:282,bw:3,ac:500},{type:"android",rules:[{mdmh:"asus/*/ASUS_Z00AD/*"},{ua:"ASUS_Z00AD"}],dpi:[403,404.6],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"Google/*/Pixel 2 XL/*"},{ua:"Pixel 2 XL"}],dpi:537.9,bw:3,ac:1e3},{type:"android",rules:[{mdmh:"Google/*/Pixel 3 XL/*"},{ua:"Pixel 3 XL"}],dpi:[558.5,553.8],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"Google/*/Pixel XL/*"},{ua:"Pixel XL"}],dpi:[537.9,533],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"Google/*/Pixel 3/*"},{ua:"Pixel 3"}],dpi:442.4,bw:3,ac:1e3},{type:"android",rules:[{mdmh:"Google/*/Pixel 2/*"},{ua:"Pixel 2"}],dpi:441,bw:3,ac:500},{type:"android",rules:[{mdmh:"Google/*/Pixel/*"},{ua:"Pixel"}],dpi:[432.6,436.7],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"HTC/*/HTC6435LVW/*"},{ua:"HTC6435LVW"}],dpi:[449.7,443.3],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"HTC/*/HTC One XL/*"},{ua:"HTC One XL"}],dpi:[315.3,314.6],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"htc/*/Nexus 9/*"},{ua:"Nexus 9"}],dpi:289,bw:3,ac:500},{type:"android",rules:[{mdmh:"HTC/*/HTC One M9/*"},{ua:"HTC One M9"}],dpi:[442.5,443.3],bw:3,ac:500},{type:"android",rules:[{mdmh:"HTC/*/HTC One_M8/*"},{ua:"HTC One_M8"}],dpi:[449.7,447.4],bw:3,ac:500},{type:"android",rules:[{mdmh:"HTC/*/HTC One/*"},{ua:"HTC One"}],dpi:472.8,bw:3,ac:1e3},{type:"android",rules:[{mdmh:"Huawei/*/Nexus 6P/*"},{ua:"Nexus 6P"}],dpi:[515.1,518],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"Huawei/*/BLN-L24/*"},{ua:"HONORBLN-L24"}],dpi:480,bw:4,ac:500},{type:"android",rules:[{mdmh:"Huawei/*/BKL-L09/*"},{ua:"BKL-L09"}],dpi:403,bw:3.47,ac:500},{type:"android",rules:[{mdmh:"LENOVO/*/Lenovo PB2-690Y/*"},{ua:"Lenovo PB2-690Y"}],dpi:[457.2,454.713],bw:3,ac:500},{type:"android",rules:[{mdmh:"LGE/*/Nexus 5X/*"},{ua:"Nexus 5X"}],dpi:[422,419.9],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"LGE/*/LGMS345/*"},{ua:"LGMS345"}],dpi:[221.7,219.1],bw:3,ac:500},{type:"android",rules:[{mdmh:"LGE/*/LG-D800/*"},{ua:"LG-D800"}],dpi:[422,424.1],bw:3,ac:500},{type:"android",rules:[{mdmh:"LGE/*/LG-D850/*"},{ua:"LG-D850"}],dpi:[537.9,541.9],bw:3,ac:500},{type:"android",rules:[{mdmh:"LGE/*/VS985 4G/*"},{ua:"VS985 4G"}],dpi:[537.9,535.6],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"LGE/*/Nexus 5/*"},{ua:"Nexus 5 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RAZR"}],dpi:[368.1,256.7],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"motorola/*/XT830C/*"},{ua:"XT830C"}],dpi:[254,255.9],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"motorola/*/XT1021/*"},{ua:"XT1021"}],dpi:[254,256.7],bw:3,ac:500},{type:"android",rules:[{mdmh:"motorola/*/XT1023/*"},{ua:"XT1023"}],dpi:[254,256.7],bw:3,ac:500},{type:"android",rules:[{mdmh:"motorola/*/XT1028/*"},{ua:"XT1028"}],dpi:[326.6,327.6],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"motorola/*/XT1034/*"},{ua:"XT1034"}],dpi:[326.6,328.4],bw:3,ac:500},{type:"android",rules:[{mdmh:"motorola/*/XT1053/*"},{ua:"XT1053"}],dpi:[315.3,316.1],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"motorola/*/XT1562/*"},{ua:"XT1562"}],dpi:[403.4,402.7],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"motorola/*/Nexus 6/*"},{ua:"Nexus 6 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A6003"}],dpi:401,bw:3,ac:500},{type:"android",rules:[{mdmh:"OnePlus/*/ONEPLUS A6010/*"},{ua:"ONEPLUS A6010"}],dpi:401,bw:2,ac:500},{type:"android",rules:[{mdmh:"OnePlus/*/ONEPLUS A6013/*"},{ua:"ONEPLUS A6013"}],dpi:401,bw:2,ac:500},{type:"android",rules:[{mdmh:"OPPO/*/X909/*"},{ua:"X909"}],dpi:[442.4,444.1],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/GT-I9082/*"},{ua:"GT-I9082"}],dpi:[184.7,185.4],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/SM-G360P/*"},{ua:"SM-G360P"}],dpi:[196.7,205.4],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/Nexus S/*"},{ua:"Nexus 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ONE TOUCH Fierce/*"},{ua:"ALCATEL ONE TOUCH Fierce"}],dpi:[240,247.5],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"THL/*/thl 5000/*"},{ua:"thl 5000"}],dpi:[480,443.3],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"Fly/*/IQ4412/*"},{ua:"IQ4412"}],dpi:307.9,bw:3,ac:1e3},{type:"android",rules:[{mdmh:"ZTE/*/ZTE Blade L2/*"},{ua:"ZTE Blade L2"}],dpi:240,bw:3,ac:500},{type:"android",rules:[{mdmh:"BENEVE/*/VR518/*"},{ua:"VR518"}],dpi:480,bw:3,ac:500},{type:"ios",rules:[{res:[640,960]}],dpi:[325.1,328.4],bw:4,ac:1e3},{type:"ios",rules:[{res:[640,1136]}],dpi:[317.1,320.2],bw:3,ac:1e3},{type:"ios",rules:[{res:[750,1334]}],dpi:326.4,bw:4,ac:1e3},{type:"ios",rules:[{res:[1242,2208]}],dpi:[453.6,458.4],bw:4,ac:1e3},{type:"ios",rules:[{res:[1125,2001]}],dpi:[410.9,415.4],bw:4,ac:1e3},{type:"ios",rules:[{res:[1125,2436]}],dpi:458,bw:4,ac:1e3},{type:"android",rules:[{mdmh:"Huawei/*/EML-L29/*"},{ua:"EML-L29"}],dpi:428,bw:3.45,ac:500},{type:"android",rules:[{mdmh:"Nokia/*/Nokia 7.1/*"},{ua:"Nokia 7.1"}],dpi:[432,431.9],bw:3,ac:500},{type:"ios",rules:[{res:[1242,2688]}],dpi:458,bw:4,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/SM-G570M/*"},{ua:"SM-G570M"}],dpi:320,bw:3.684,ac:1e3},{type:"android",rules:[{mdmh:"samsung/*/SM-G970F/*"},{ua:"SM-G970F"}],dpi:438,bw:2.281,ac:500},{type:"android",rules:[{mdmh:"samsung/*/SM-G973F/*"},{ua:"SM-G973F"}],dpi:550,bw:2.002,ac:500},{type:"android",rules:[{mdmh:"samsung/*/SM-G975F/*"},{ua:"SM-G975F"}],dpi:522,bw:2.054,ac:500},{type:"android",rules:[{mdmh:"samsung/*/SM-G977F/*"},{ua:"SM-G977F"}],dpi:505,bw:2.334,ac:500},{type:"ios",rules:[{res:[828,1792]}],dpi:326,bw:5,ac:500}]};function J(e,t){if(this.dpdb=Z,this.recalculateDeviceParams_(),e){this.onDeviceParamsUpdated=t;var i=new XMLHttpRequest,r=this;i.open("GET",e,!0),i.addEventListener("load",function(){r.loading=!1,i.status>=200&&i.status<=299?(r.dpdb=JSON.parse(i.response),r.recalculateDeviceParams_()):console.error("Error loading online DPDB!")}),i.send()}}function K(e){this.xdpi=e.xdpi,this.ydpi=e.ydpi,this.bevelMm=e.bevelMm}function $(e,t){this.set(e,t)}function ee(e,t){this.kFilter=e,this.isDebug=t,this.currentAccelMeasurement=new $,this.currentGyroMeasurement=new $,this.previousGyroMeasurement=new $,o()?this.filterQ=new U(-1,0,0,1):this.filterQ=new U(1,0,0,1),this.previousFilterQ=new U,this.previousFilterQ.copy(this.filterQ),this.accelQ=new U,this.isOrientationInitialized=!1,this.estimatedGravity=new k,this.measuredGravity=new k,this.gyroIntegralQ=new U}function te(e,t){this.predictionTimeS=e,this.isDebug=t,this.previousQ=new U,this.previousTimestampS=null,this.deltaQ=new U,this.outQ=new U}function ie(e,t,i,r){this.yawOnly=i,this.accelerometer=new k,this.gyroscope=new k,this.filter=new ee(e,r),this.posePredictor=new te(t,r),this.isFirefoxAndroid=h(),this.isIOS=o();var s=c();this.isDeviceMotionInRadians=!this.isIOS&&s&&s<66,this.isWithoutDeviceMotion=u()||d(),this.filterToWorldQ=new U,o()?this.filterToWorldQ.setFromAxisAngle(new k(1,0,0),Math.PI/2):this.filterToWorldQ.setFromAxisAngle(new k(1,0,0),-Math.PI/2),this.inverseWorldToScreenQ=new U,this.worldToScreenQ=new U,this.originalPoseAdjustQ=new U,this.originalPoseAdjustQ.setFromAxisAngle(new k(0,0,1),-window.orientation*Math.PI/180),this.setScreenTransform_(),f()&&this.filterToWorldQ.multiply(this.inverseWorldToScreenQ),this.resetQ=new U,this.orientationOut_=new Float32Array(4),this.start()}J.prototype.getDeviceParams=function(){return this.deviceParams},J.prototype.recalculateDeviceParams_=function(){var e=this.calcDeviceParams_();e?(this.deviceParams=e,this.onDeviceParamsUpdated&&this.onDeviceParamsUpdated(this.deviceParams)):console.error("Failed to recalculate device parameters.")},J.prototype.calcDeviceParams_=function(){var e=this.dpdb;if(!e)return console.error("DPDB not available."),null;if(1!=e.format)return console.error("DPDB has unexpected format version."),null;if(!e.devices||!e.devices.length)return console.error("DPDB does not have a devices section."),null;var t=navigator.userAgent||navigator.vendor||window.opera,i=m(),r=g();if(!e.devices)return console.error("DPDB has no devices section."),null;for(var s=0;s<e.devices.length;s++){var n=e.devices[s];if(n.rules)if("ios"==n.type||"android"==n.type){if(o()==("ios"==n.type)){for(var a=!1,l=0;l<n.rules.length;l++){var A=n.rules[l];if(this.ruleMatches_(A,t,i,r)){a=!0;break}}if(a){var h=n.dpi[0]||n.dpi,c=n.dpi[1]||n.dpi;return new K({xdpi:h,ydpi:c,bevelMm:n.bw})}}}else console.warn("Device["+s+"] has invalid type.");else console.warn("Device["+s+"] has no rules section.")}return console.warn("No DPDB device match."),null},J.prototype.ruleMatches_=function(e,t,i,r){if(!e.ua&&!e.res)return!1;if(e.ua&&"SM"===e.ua.substring(0,2)&&(e.ua=e.ua.substring(0,7)),e.ua&&t.indexOf(e.ua)<0)return!1;if(e.res){if(!e.res[0]||!e.res[1])return!1;var s=e.res[0],n=e.res[1];if(Math.min(i,r)!=Math.min(s,n)||Math.max(i,r)!=Math.max(s,n))return!1}return!0},$.prototype.set=function(e,t){this.sample=e,this.timestampS=t},$.prototype.copy=function(e){this.set(e.sample,e.timestampS)},ee.prototype.addAccelMeasurement=function(e,t){this.currentAccelMeasurement.set(e,t)},ee.prototype.addGyroMeasurement=function(e,t){this.currentGyroMeasurement.set(e,t);var i,r=t-this.previousGyroMeasurement.timestampS;i=r,!(isNaN(i)||i<=.001||i>1)&&this.run_(),this.previousGyroMeasurement.copy(this.currentGyroMeasurement)},ee.prototype.run_=function(){if(!this.isOrientationInitialized)return this.accelQ=this.accelToQuaternion_(this.currentAccelMeasurement.sample),this.previousFilterQ.copy(this.accelQ),void(this.isOrientationInitialized=!0);var e=this.currentGyroMeasurement.timestampS-this.previousGyroMeasurement.timestampS,t=this.gyroToQuaternionDelta_(this.currentGyroMeasurement.sample,e);this.gyroIntegralQ.multiply(t),this.filterQ.copy(this.previousFilterQ),this.filterQ.multiply(t);var i=new U;i.copy(this.filterQ),i.inverse(),this.estimatedGravity.set(0,0,-1),this.estimatedGravity.applyQuaternion(i),this.estimatedGravity.normalize(),this.measuredGravity.copy(this.currentAccelMeasurement.sample),this.measuredGravity.normalize();var r,s=new U;s.setFromUnitVectors(this.estimatedGravity,this.measuredGravity),s.inverse(),this.isDebug&&console.log("Delta: %d deg, G_est: (%s, %s, %s), G_meas: (%s, %s, %s)",Q*((r=s).w>1?(console.warn("getQuaternionAngle: w > 1"),0):2*Math.acos(r.w)),this.estimatedGravity.x.toFixed(1),this.estimatedGravity.y.toFixed(1),this.estimatedGravity.z.toFixed(1),this.measuredGravity.x.toFixed(1),this.measuredGravity.y.toFixed(1),this.measuredGravity.z.toFixed(1));var n=new U;n.copy(this.filterQ),n.multiply(s),this.filterQ.slerp(n,1-this.kFilter),this.previousFilterQ.copy(this.filterQ)},ee.prototype.getOrientation=function(){return this.filterQ},ee.prototype.accelToQuaternion_=function(e){var t=new k;t.copy(e),t.normalize();var i=new U;return i.setFromUnitVectors(new k(0,0,-1),t),i.inverse(),i},ee.prototype.gyroToQuaternionDelta_=function(e,t){var i=new U,r=new k;return r.copy(e),r.normalize(),i.setFromAxisAngle(r,e.length()*t),i},te.prototype.getPrediction=function(e,t,i){if(!this.previousTimestampS)return this.previousQ.copy(e),this.previousTimestampS=i,e;var r=new k;r.copy(t),r.normalize();var s=t.length();if(s<20*G)return this.isDebug&&console.log("Moving slowly, at %s deg/s: no prediction",(Q*s).toFixed(1)),this.outQ.copy(e),this.previousQ.copy(e),this.outQ;var n=s*this.predictionTimeS;return this.deltaQ.setFromAxisAngle(r,n),this.outQ.copy(this.previousQ),this.outQ.multiply(this.deltaQ),this.previousQ.copy(e),this.previousTimestampS=i,this.outQ},ie.prototype.getPosition=function(){return null},ie.prototype.getOrientation=function(){var e=void 0;if(this.isWithoutDeviceMotion&&this._deviceOrientationQ){this.deviceOrientationFixQ=this.deviceOrientationFixQ||(r=(new U).setFromAxisAngle(new k(0,0,-1),0),s=new U,-90===window.orientation?s.setFromAxisAngle(new k(0,1,0),Math.PI/-2):s.setFromAxisAngle(new k(0,1,0),Math.PI/2),r.multiply(s)),this.deviceOrientationFilterToWorldQ=this.deviceOrientationFilterToWorldQ||((i=new U).setFromAxisAngle(new k(1,0,0),-Math.PI/2),i),e=this._deviceOrientationQ;var t=new U;return t.copy(e),t.multiply(this.deviceOrientationFilterToWorldQ),t.multiply(this.resetQ),t.multiply(this.worldToScreenQ),t.multiplyQuaternions(this.deviceOrientationFixQ,t),this.yawOnly&&(t.x=0,t.z=0,t.normalize()),this.orientationOut_[0]=t.x,this.orientationOut_[1]=t.y,this.orientationOut_[2]=t.z,this.orientationOut_[3]=t.w,this.orientationOut_}var i,r,s,n=this.filter.getOrientation();e=this.posePredictor.getPrediction(n,this.gyroscope,this.previousTimestampS);var t=new U;return t.copy(this.filterToWorldQ),t.multiply(this.resetQ),t.multiply(e),t.multiply(this.worldToScreenQ),this.yawOnly&&(t.x=0,t.z=0,t.normalize()),this.orientationOut_[0]=t.x,this.orientationOut_[1]=t.y,this.orientationOut_[2]=t.z,this.orientationOut_[3]=t.w,this.orientationOut_},ie.prototype.resetPose=function(){this.resetQ.copy(this.filter.getOrientation()),this.resetQ.x=0,this.resetQ.y=0,this.resetQ.z*=-1,this.resetQ.normalize(),f()&&this.resetQ.multiply(this.inverseWorldToScreenQ),this.resetQ.multiply(this.originalPoseAdjustQ)},ie.prototype.onDeviceOrientation_=function(e){this._deviceOrientationQ=this._deviceOrientationQ||new U;var t=e.alpha,i=e.beta,r=e.gamma;t=(t||0)*Math.PI/180,i=(i||0)*Math.PI/180,r=(r||0)*Math.PI/180,this._deviceOrientationQ.setFromEulerYXZ(i,t,-r)},ie.prototype.onDeviceMotion_=function(e){this.updateDeviceMotion_(e)},ie.prototype.updateDeviceMotion_=function(e){var t=e.accelerationIncludingGravity,i=e.rotationRate,r=e.timeStamp/1e3,s=r-this.previousTimestampS;return s<0?(_("fusion-pose-sensor:invalid:non-monotonic","Invalid timestamps detected: non-monotonic timestamp from devicemotion"),void(this.previousTimestampS=r)):s<=.001||s>1?(_("fusion-pose-sensor:invalid:outside-threshold","Invalid timestamps detected: Timestamp from devicemotion outside expected range."),void(this.previousTimestampS=r)):(this.accelerometer.set(-t.x,-t.y,-t.z),i&&(p()?this.gyroscope.set(-i.beta,i.alpha,i.gamma):this.gyroscope.set(i.alpha,i.beta,i.gamma),this.isDeviceMotionInRadians||this.gyroscope.multiplyScalar(Math.PI/180),this.filter.addGyroMeasurement(this.gyroscope,r)),this.filter.addAccelMeasurement(this.accelerometer,r),void(this.previousTimestampS=r))},ie.prototype.onOrientationChange_=function(e){this.setScreenTransform_()},ie.prototype.onMessage_=function(e){var t=e.data;if(t&&t.type){var i=t.type.toLowerCase();"devicemotion"===i&&this.updateDeviceMotion_(t.deviceMotionEvent)}},ie.prototype.setScreenTransform_=function(){switch(this.worldToScreenQ.set(0,0,0,1),window.orientation){case 0:break;case 90:this.worldToScreenQ.setFromAxisAngle(new k(0,0,1),-Math.PI/2);break;case-90:this.worldToScreenQ.setFromAxisAngle(new k(0,0,1),Math.PI/2)}this.inverseWorldToScreenQ.copy(this.worldToScreenQ),this.inverseWorldToScreenQ.inverse()},ie.prototype.start=function(){var e,t,i;this.onDeviceMotionCallback_=this.onDeviceMotion_.bind(this),this.onOrientationChangeCallback_=this.onOrientationChange_.bind(this),this.onMessageCallback_=this.onMessage_.bind(this),this.onDeviceOrientationCallback_=this.onDeviceOrientation_.bind(this),o()&&(e=window.self!==window.top,t=x(document.referrer),i=x(window.location.href),e&&t!==i)&&window.addEventListener("message",this.onMessageCallback_),window.addEventListener("orientationchange",this.onOrientationChangeCallback_),this.isWithoutDeviceMotion?window.addEventListener("deviceorientation",this.onDeviceOrientationCallback_):window.addEventListener("devicemotion",this.onDeviceMotionCallback_)},ie.prototype.stop=function(){window.removeEventListener("devicemotion",this.onDeviceMotionCallback_),window.removeEventListener("deviceorientation",this.onDeviceOrientationCallback_),window.removeEventListener("orientationchange",this.onOrientationChangeCallback_),window.removeEventListener("message",this.onMessageCallback_)};var re=new k(1,0,0),se=new k(0,0,1),ne=new U;ne.setFromAxisAngle(re,-Math.PI/2),ne.multiply((new U).setFromAxisAngle(se,Math.PI/2));var ae=function(){function e(t){r(this,e),this.config=t,this.sensor=null,this.fusionSensor=null,this._out=new Float32Array(4),this.api=null,this.errors=[],this._sensorQ=new U,this._outQ=new U,this._onSensorRead=this._onSensorRead.bind(this),this._onSensorError=this._onSensorError.bind(this),this.init()}return s(e,[{key:"init",value:function(){var e=null;try{(e=new RelativeOrientationSensor({frequency:60,referenceFrame:"screen"})).addEventListener("error",this._onSensorError)}catch(e){this.errors.push(e),"SecurityError"===e.name?(console.error("Cannot construct sensors due to the Feature Policy"),console.warn('Attempting to fall back using "devicemotion"; however this will fail in the future without correct permissions.'),this.useDeviceMotion()):"ReferenceError"===e.name?this.useDeviceMotion():console.error(e)}e&&(this.api="sensor",this.sensor=e,this.sensor.addEventListener("reading",this._onSensorRead),this.sensor.start())}},{key:"useDeviceMotion",value:function(){this.api="devicemotion",this.fusionSensor=new ie(this.config.K_FILTER,this.config.PREDICTION_TIME_S,this.config.YAW_ONLY,this.config.DEBUG),this.sensor&&(this.sensor.removeEventListener("reading",this._onSensorRead),this.sensor.removeEventListener("error",this._onSensorError),this.sensor=null)}},{key:"getOrientation",value:function(){if(this.fusionSensor)return this.fusionSensor.getOrientation();if(!this.sensor||!this.sensor.quaternion)return this._out[0]=this._out[1]=this._out[2]=0,this._out[3]=1,this._out;var e=this.sensor.quaternion;this._sensorQ.set(e[0],e[1],e[2],e[3]);var t=this._outQ;return t.copy(ne),t.multiply(this._sensorQ),this.config.YAW_ONLY&&(t.x=t.z=0,t.normalize()),this._out[0]=t.x,this._out[1]=t.y,this._out[2]=t.z,this._out[3]=t.w,this._out}},{key:"_onSensorError",value:function(e){this.errors.push(e.error),"NotAllowedError"===e.error.name?console.error("Permission to access sensor was denied"):"NotReadableError"===e.error.name?console.error("Sensor could not be read"):console.error(e.error),this.useDeviceMotion()}},{key:"_onSensorRead",value:function(){}}]),e}();function oe(){this.loadIcon_();var e=document.createElement("div"),t=e.style;t.position="fixed",t.top=0,t.right=0,t.bottom=0,t.left=0,t.backgroundColor="gray",t.fontFamily="sans-serif",t.zIndex=1e6;var i=document.createElement("img");i.src=this.icon;var t=i.style;t.marginLeft="25%",t.marginTop="25%",t.width="50%",e.appendChild(i);var r=document.createElement("div"),t=r.style;t.textAlign="center",t.fontSize="16px",t.lineHeight="24px",t.margin="24px 25%",t.width="50%",r.innerHTML="Place your phone into your Cardboard viewer.",e.appendChild(r);var s=document.createElement("div"),t=s.style;t.backgroundColor="#CFD8DC",t.position="fixed",t.bottom=0,t.width="100%",t.height="48px",t.padding="14px 24px",t.boxSizing="border-box",t.color="#656A6B",e.appendChild(s);var n=document.createElement("div");n.style.float="left",n.innerHTML="No Cardboard viewer?";var a=document.createElement("a");a.href="https://www.google.com/get/cardboard/get-cardboard/",a.innerHTML="get one",a.target="_blank";var t=a.style;t.float="right",t.fontWeight=600,t.textTransform="uppercase",t.borderLeft="1px solid gray",t.paddingLeft="24px",t.textDecoration="none",t.color="#656A6B",s.appendChild(n),s.appendChild(a),this.overlay=e,this.text=r,this.hide()}oe.prototype.show=function(e){e||this.overlay.parentElement?e&&(this.overlay.parentElement&&this.overlay.parentElement!=e&&this.overlay.parentElement.removeChild(this.overlay),e.appendChild(this.overlay)):document.body.appendChild(this.overlay),this.overlay.style.display="block";var t=this.overlay.querySelector("img"),i=t.style;f()?(i.width="20%",i.marginLeft="40%",i.marginTop="3%"):(i.width="50%",i.marginLeft="25%",i.marginTop="25%")},oe.prototype.hide=function(){this.overlay.style.display="none"},oe.prototype.showTemporarily=function(e,t){this.show(t),this.timer=setTimeout(this.hide.bind(this),e)},oe.prototype.disableShowTemporarily=function(){clearTimeout(this.timer)},oe.prototype.update=function(){this.disableShowTemporarily(),!f()&&b()?this.show():this.hide()},oe.prototype.loadIcon_=function(){this.icon="data:image/svg+xml,"+encodeURIComponent("<svg width='198' height='240' viewBox='0 0 198 240' xmlns='http://www.w3.org/2000/svg'><g fill='none' fill-rule='evenodd'><path d='M149.625 109.527l6.737 3.891v.886c0 .177.013.36.038.549.01.081.02.162.027.242.14 1.415.974 2.998 2.105 3.999l5.72 5.062.081-.09s4.382-2.53 5.235-3.024l25.97 14.993v54.001c0 .771-.386 1.217-.948 1.217-.233 0-.495-.076-.772-.236l-23.967-13.838-.014.024-27.322 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we(e){Object.defineProperties(this,{hasPosition:{writable:!1,enumerable:!0,value:e.hasPosition},hasExternalDisplay:{writable:!1,enumerable:!0,value:e.hasExternalDisplay},canPresent:{writable:!1,enumerable:!0,value:e.canPresent},maxLayers:{writable:!1,enumerable:!0,value:e.maxLayers},hasOrientation:{enumerable:!0,get:function(){return F("VRDisplayCapabilities.prototype.hasOrientation","VRDisplay.prototype.getFrameData"),e.hasOrientation}}})}function ye(e){var t=!("wakelock"in(e=e||{}))||e.wakelock;this.isPolyfilled=!0,this.displayId=pe++,this.displayName="",this.depthNear=.01,this.depthFar=1e4,this.isPresenting=!1,Object.defineProperty(this,"isConnected",{get:function(){return F("VRDisplay.prototype.isConnected","VRDisplayCapabilities.prototype.hasExternalDisplay"),!1}}),this.capabilities=new we({hasPosition:!1,hasOrientation:!1,hasExternalDisplay:!1,canPresent:!1,maxLayers:1}),this.stageParameters=null,this.waitingForPresent_=!1,this.layer_=null,this.originalParent_=null,this.fullscreenElement_=null,this.fullscreenWrapper_=null,this.fullscreenElementCachedStyle_=null,this.fullscreenEventTarget_=null,this.fullscreenChangeHandler_=null,this.fullscreenErrorHandler_=null,t&&b()&&(this.wakelock_=new ue)}ye.prototype.getFrameData=function(e){return M(e,this._getPose(),this)},ye.prototype.getPose=function(){return F("VRDisplay.prototype.getPose","VRDisplay.prototype.getFrameData"),this._getPose()},ye.prototype.resetPose=function(){return F("VRDisplay.prototype.resetPose"),this._resetPose()},ye.prototype.getImmediatePose=function(){return F("VRDisplay.prototype.getImmediatePose","VRDisplay.prototype.getFrameData"),this._getPose()},ye.prototype.requestAnimationFrame=function(e){return ge(e)},ye.prototype.cancelAnimationFrame=function(e){return ve(e)},ye.prototype.wrapForFullscreen=function(e){if(o())return e;if(!this.fullscreenWrapper_){this.fullscreenWrapper_=document.createElement("div");var t=["height: "+Math.min(screen.height,screen.width)+"px !important","top: 0 !important","left: 0 !important","right: 0 !important","border: 0","margin: 0","padding: 0","z-index: 999999 !important","position: fixed"];this.fullscreenWrapper_.setAttribute("style",t.join("; ")+";"),this.fullscreenWrapper_.classList.add("webvr-polyfill-fullscreen-wrapper")}if(this.fullscreenElement_==e)return this.fullscreenWrapper_;if(this.fullscreenElement_&&(this.originalParent_?this.originalParent_.appendChild(this.fullscreenElement_):this.fullscreenElement_.parentElement.removeChild(this.fullscreenElement_)),this.fullscreenElement_=e,this.originalParent_=e.parentElement,this.originalParent_||document.body.appendChild(e),!this.fullscreenWrapper_.parentElement){var i=this.fullscreenElement_.parentElement;i.insertBefore(this.fullscreenWrapper_,this.fullscreenElement_),i.removeChild(this.fullscreenElement_)}this.fullscreenWrapper_.insertBefore(this.fullscreenElement_,this.fullscreenWrapper_.firstChild),this.fullscreenElementCachedStyle_=this.fullscreenElement_.getAttribute("style");var r=this;return function(){if(r.fullscreenElement_){var e=["position: absolute","top: 0","left: 0","width: "+Math.max(screen.width,screen.height)+"px","height: "+Math.min(screen.height,screen.width)+"px","border: 0","margin: 0","padding: 0"];r.fullscreenElement_.setAttribute("style",e.join("; ")+";")}}(),this.fullscreenWrapper_},ye.prototype.removeFullscreenWrapper=function(){if(this.fullscreenElement_){var e=this.fullscreenElement_;this.fullscreenElementCachedStyle_?e.setAttribute("style",this.fullscreenElementCachedStyle_):e.removeAttribute("style"),this.fullscreenElement_=null,this.fullscreenElementCachedStyle_=null;var t=this.fullscreenWrapper_.parentElement;return this.fullscreenWrapper_.removeChild(e),this.originalParent_===t?t.insertBefore(e,this.fullscreenWrapper_):this.originalParent_&&this.originalParent_.appendChild(e),t.removeChild(this.fullscreenWrapper_),e}},ye.prototype.requestPresent=function(e){var t=this.isPresenting,i=this;return e instanceof Array||(F("VRDisplay.prototype.requestPresent with non-array argument","an array of VRLayers as the first argument"),e=[e]),new Promise(function(r,s){if(i.capabilities.canPresent)if(0==e.length||e.length>i.capabilities.maxLayers)s(new Error("Invalid number of layers."));else{var n=e[0];if(n.source){var a=n.leftBounds||fe,A=n.rightBounds||me;if(t){var h=i.layer_;h.source!==n.source&&(h.source=n.source);for(var c=0;c<4;c++)h.leftBounds[c]=a[c],h.rightBounds[c]=A[c];return i.wrapForFullscreen(i.layer_.source),i.updatePresent_(),void r()}if(i.layer_={predistorted:n.predistorted,source:n.source,leftBounds:a.slice(0),rightBounds:A.slice(0)},i.waitingForPresent_=!1,i.layer_&&i.layer_.source){var d=i.wrapForFullscreen(i.layer_.source);i.addFullscreenListeners_(d,function(){var e=document.fullscreenElement||document.webkitFullscreenElement||document.mozFullScreenElement||document.msFullscreenElement;i.isPresenting=d===e,i.isPresenting?(screen.orientation&&screen.orientation.lock&&screen.orientation.lock("landscape-primary").catch(function(e){console.error("screen.orientation.lock() failed due to",e.message)}),i.waitingForPresent_=!1,i.beginPresent_(),r()):(screen.orientation&&screen.orientation.unlock&&screen.orientation.unlock(),i.removeFullscreenWrapper(),i.disableWakeLock(),i.endPresent_(),i.removeFullscreenListeners_()),i.fireVRDisplayPresentChange_()},function(){i.waitingForPresent_&&(i.removeFullscreenWrapper(),i.removeFullscreenListeners_(),i.disableWakeLock(),i.waitingForPresent_=!1,i.isPresenting=!1,s(new Error("Unable to present.")))}),function(e){if(l())return!1;if(e.requestFullscreen)e.requestFullscreen();else if(e.webkitRequestFullscreen)e.webkitRequestFullscreen();else if(e.mozRequestFullScreen)e.mozRequestFullScreen();else{if(!e.msRequestFullscreen)return!1;e.msRequestFullscreen()}return!0}(d)?(i.enableWakeLock(),i.waitingForPresent_=!0):(o()||l())&&(i.enableWakeLock(),i.isPresenting=!0,i.beginPresent_(),i.fireVRDisplayPresentChange_(),r())}i.waitingForPresent_||o()||(v(),s(new Error("Unable to present.")))}else r()}else s(new Error("VRDisplay is not capable of presenting."))})},ye.prototype.exitPresent=function(){var e=this.isPresenting,t=this;return this.isPresenting=!1,this.layer_=null,this.disableWakeLock(),new Promise(function(i,r){e?(!v()&&o()&&(t.endPresent_(),t.fireVRDisplayPresentChange_()),l()&&(t.removeFullscreenWrapper(),t.removeFullscreenListeners_(),t.endPresent_(),t.fireVRDisplayPresentChange_()),i()):r(new Error("Was not presenting to VRDisplay."))})},ye.prototype.getLayers=function(){return this.layer_?[this.layer_]:[]},ye.prototype.fireVRDisplayPresentChange_=function(){var e=new CustomEvent("vrdisplaypresentchange",{detail:{display:this}});window.dispatchEvent(e)},ye.prototype.fireVRDisplayConnect_=function(){var e=new CustomEvent("vrdisplayconnect",{detail:{display:this}});window.dispatchEvent(e)},ye.prototype.addFullscreenListeners_=function(e,t,i){this.removeFullscreenListeners_(),this.fullscreenEventTarget_=e,this.fullscreenChangeHandler_=t,this.fullscreenErrorHandler_=i,t&&(document.fullscreenEnabled?e.addEventListener("fullscreenchange",t,!1):document.webkitFullscreenEnabled?e.addEventListener("webkitfullscreenchange",t,!1):document.mozFullScreenEnabled?document.addEventListener("mozfullscreenchange",t,!1):document.msFullscreenEnabled&&e.addEventListener("msfullscreenchange",t,!1)),i&&(document.fullscreenEnabled?e.addEventListener("fullscreenerror",i,!1):document.webkitFullscreenEnabled?e.addEventListener("webkitfullscreenerror",i,!1):document.mozFullScreenEnabled?document.addEventListener("mozfullscreenerror",i,!1):document.msFullscreenEnabled&&e.addEventListener("msfullscreenerror",i,!1))},ye.prototype.removeFullscreenListeners_=function(){if(this.fullscreenEventTarget_){var e=this.fullscreenEventTarget_;if(this.fullscreenChangeHandler_){var t=this.fullscreenChangeHandler_;e.removeEventListener("fullscreenchange",t,!1),e.removeEventListener("webkitfullscreenchange",t,!1),document.removeEventListener("mozfullscreenchange",t,!1),e.removeEventListener("msfullscreenchange",t,!1)}if(this.fullscreenErrorHandler_){var i=this.fullscreenErrorHandler_;e.removeEventListener("fullscreenerror",i,!1),e.removeEventListener("webkitfullscreenerror",i,!1),document.removeEventListener("mozfullscreenerror",i,!1),e.removeEventListener("msfullscreenerror",i,!1)}this.fullscreenEventTarget_=null,this.fullscreenChangeHandler_=null,this.fullscreenErrorHandler_=null}},ye.prototype.enableWakeLock=function(){this.wakelock_&&this.wakelock_.enable()},ye.prototype.disableWakeLock=function(){this.wakelock_&&this.wakelock_.disable()},ye.prototype.beginPresent_=function(){},ye.prototype.endPresent_=function(){},ye.prototype.submitFrame=function(e){},ye.prototype.getEyeParameters=function(e){return null};var be={ADDITIONAL_VIEWERS:[],DEFAULT_VIEWER:"",MOBILE_WAKE_LOCK:!0,DEBUG:!1,DPDB_URL:"https://dpdb.webvr.rocks/dpdb.json",K_FILTER:.98,PREDICTION_TIME_S:.04,CARDBOARD_UI_DISABLED:!1,ROTATE_INSTRUCTIONS_DISABLED:!1,YAW_ONLY:!1,BUFFER_SCALE:.5,DIRTY_SUBMIT_FRAME_BINDINGS:!1},Ee={LEFT:"left",RIGHT:"right"};function Se(e){var t=E({},be);e=E(t,e||{}),ye.call(this,{wakelock:e.MOBILE_WAKE_LOCK}),this.config=e,this.displayName="Cardboard VRDisplay",this.capabilities=new we({hasPosition:!1,hasOrientation:!0,hasExternalDisplay:!1,canPresent:!0,maxLayers:1}),this.stageParameters=null,this.bufferScale_=this.config.BUFFER_SCALE,this.poseSensor_=new ae(this.config),this.distorter_=null,this.cardboardUI_=null,this.dpdb_=new J(this.config.DPDB_URL,this.onDeviceParamsUpdated_.bind(this)),this.deviceInfo_=new q(this.dpdb_.getDeviceParams(),e.ADDITIONAL_VIEWERS),this.viewerSelector_=new he(e.DEFAULT_VIEWER),this.viewerSelector_.onChange(this.onViewerChanged_.bind(this)),this.deviceInfo_.setViewer(this.viewerSelector_.getCurrentViewer()),this.config.ROTATE_INSTRUCTIONS_DISABLED||(this.rotateInstructions_=new oe),o()&&window.addEventListener("resize",this.onResize_.bind(this))}return Se.prototype=Object.create(ye.prototype),Se.prototype._getPose=function(){return{position:null,orientation:this.poseSensor_.getOrientation(),linearVelocity:null,linearAcceleration:null,angularVelocity:null,angularAcceleration:null}},Se.prototype._resetPose=function(){this.poseSensor_.resetPose&&this.poseSensor_.resetPose()},Se.prototype._getFieldOfView=function(e){var t;if(e==Ee.LEFT)t=this.deviceInfo_.getFieldOfViewLeftEye();else{if(e!=Ee.RIGHT)return console.error("Invalid eye provided: %s",e),null;t=this.deviceInfo_.getFieldOfViewRightEye()}return t},Se.prototype._getEyeOffset=function(e){var t;if(e==Ee.LEFT)t=[.5*-this.deviceInfo_.viewer.interLensDistance,0,0];else{if(e!=Ee.RIGHT)return console.error("Invalid eye provided: %s",e),null;t=[.5*this.deviceInfo_.viewer.interLensDistance,0,0]}return t},Se.prototype.getEyeParameters=function(e){var t=this._getEyeOffset(e),i=this._getFieldOfView(e),r={offset:t,renderWidth:.5*this.deviceInfo_.device.width*this.bufferScale_,renderHeight:this.deviceInfo_.device.height*this.bufferScale_};return Object.defineProperty(r,"fieldOfView",{enumerable:!0,get:function(){return F("VRFieldOfView","VRFrameData's projection matrices"),i}}),r},Se.prototype.onDeviceParamsUpdated_=function(e){this.config.DEBUG&&console.log("DPDB reported that device params were updated."),this.deviceInfo_.updateDeviceParams(e),this.distorter_&&this.distorter_.updateDeviceInfo(this.deviceInfo_)},Se.prototype.updateBounds_=function(){this.layer_&&this.distorter_&&(this.layer_.leftBounds||this.layer_.rightBounds)&&this.distorter_.setTextureBounds(this.layer_.leftBounds,this.layer_.rightBounds)},Se.prototype.beginPresent_=function(){var e=this.layer_.source.getContext("webgl");e||(e=this.layer_.source.getContext("experimental-webgl")),e||(e=this.layer_.source.getContext("webgl2")),e&&(this.layer_.predistorted?this.config.CARDBOARD_UI_DISABLED||(e.canvas.width=m()*this.bufferScale_,e.canvas.height=g()*this.bufferScale_,this.cardboardUI_=new O(e)):(this.config.CARDBOARD_UI_DISABLED||(this.cardboardUI_=new O(e)),this.distorter_=new B(e,this.cardboardUI_,this.config.BUFFER_SCALE,this.config.DIRTY_SUBMIT_FRAME_BINDINGS),this.distorter_.updateDeviceInfo(this.deviceInfo_)),this.cardboardUI_&&this.cardboardUI_.listen(function(e){this.viewerSelector_.show(this.layer_.source.parentElement),e.stopPropagation(),e.preventDefault()}.bind(this),function(e){this.exitPresent(),e.stopPropagation(),e.preventDefault()}.bind(this)),this.rotateInstructions_&&(f()&&b()?this.rotateInstructions_.showTemporarily(3e3,this.layer_.source.parentElement):this.rotateInstructions_.update()),this.orientationHandler=this.onOrientationChange_.bind(this),window.addEventListener("orientationchange",this.orientationHandler),this.vrdisplaypresentchangeHandler=this.updateBounds_.bind(this),window.addEventListener("vrdisplaypresentchange",this.vrdisplaypresentchangeHandler),this.fireVRDisplayDeviceParamsChange_())},Se.prototype.endPresent_=function(){this.distorter_&&(this.distorter_.destroy(),this.distorter_=null),this.cardboardUI_&&(this.cardboardUI_.destroy(),this.cardboardUI_=null),this.rotateInstructions_&&this.rotateInstructions_.hide(),this.viewerSelector_.hide(),window.removeEventListener("orientationchange",this.orientationHandler),window.removeEventListener("vrdisplaypresentchange",this.vrdisplaypresentchangeHandler)},Se.prototype.updatePresent_=function(){this.endPresent_(),this.beginPresent_()},Se.prototype.submitFrame=function(e){if(this.distorter_)this.updateBounds_(),this.distorter_.submitFrame();else if(this.cardboardUI_&&this.layer_){var t=this.layer_.source.getContext("webgl");t||(t=this.layer_.source.getContext("experimental-webgl")),t||(t=this.layer_.source.getContext("webgl2"));var i=t.canvas;i.width==this.lastWidth&&i.height==this.lastHeight||this.cardboardUI_.onResize(),this.lastWidth=i.width,this.lastHeight=i.height,this.cardboardUI_.render()}},Se.prototype.onOrientationChange_=function(e){this.viewerSelector_.hide(),this.rotateInstructions_&&this.rotateInstructions_.update(),this.onResize_()},Se.prototype.onResize_=function(e){if(this.layer_){var t=this.layer_.source.getContext("webgl");t||(t=this.layer_.source.getContext("experimental-webgl")),t||(t=this.layer_.source.getContext("webgl2")),t.canvas.setAttribute("style",["position: absolute","top: 0","left: 0","width: 100vw","height: 100vh","border: 0","margin: 0","padding: 0px","box-sizing: content-box"].join("; ")+";"),S(t.canvas)}},Se.prototype.onViewerChanged_=function(e){this.deviceInfo_.setViewer(e),this.distorter_&&this.distorter_.updateDeviceInfo(this.deviceInfo_),this.fireVRDisplayDeviceParamsChange_()},Se.prototype.fireVRDisplayDeviceParamsChange_=function(){var e=new CustomEvent("vrdisplaydeviceparamschange",{detail:{vrdisplay:this,deviceInfo:this.deviceInfo_}});window.dispatchEvent(e)},Se.VRFrameData=function(){this.leftProjectionMatrix=new Float32Array(16),this.leftViewMatrix=new Float32Array(16),this.rightProjectionMatrix=new Float32Array(16),this.rightViewMatrix=new Float32Array(16),this.pose=null},Se.VRDisplay=ye,Se}()}(De={exports:{}},De.exports),De.exports),Oe=(Ie=Le)&&Ie.__esModule&&Object.prototype.hasOwnProperty.call(Ie,"default")?Ie.default:Ie;class Ne extends i{constructor(e){super(),this.global=e,this.onWindowResize=this.onWindowResize.bind(this),this.global.window.addEventListener("resize",this.onWindowResize),this.environmentBlendMode="opaque"}onBaseLayerSet(e,t){throw new Error("Not implemented")}isSessionSupported(e){throw new Error("Not implemented")}isFeatureSupported(e){throw new Error("Not implemented")}async requestSession(e,t){throw new Error("Not implemented")}requestAnimationFrame(e){throw new Error("Not implemented")}onFrameStart(e){throw new Error("Not implemented")}onFrameEnd(e){throw new Error("Not implemented")}doesSessionSupportReferenceSpace(e,t){throw new Error("Not implemented")}requestStageBounds(){throw new Error("Not implemented")}async requestFrameOfReferenceTransform(e,t){}cancelAnimationFrame(e){throw new Error("Not implemented")}endSession(e){throw new Error("Not implemented")}getViewSpaces(e){}getViewport(e,t,i,r,s){throw new Error("Not implemented")}getProjectionMatrix(e,t){throw new Error("Not implemented")}getBasePoseMatrix(){throw new Error("Not implemented")}getBaseViewMatrix(e){throw new Error("Not implemented")}getInputSources(){throw new Error("Not implemented")}getInputPose(e,t,i){throw new Error("Not implemented")}onWindowResize(){this.onWindowResize()}}let Ge={mapping:"xr-standard",profiles:["oculus-go","generic-trigger-touchpad"],buttons:{length:3,0:1,1:null,2:0},gripTransform:{orientation:[.11*Math.PI,0,0,1]}},Qe={mapping:"xr-standard",displayProfiles:{"Oculus Quest":["oculus-touch-v2","oculus-touch","generic-trigger-squeeze-thumbstick"]},profiles:["oculus-touch","generic-trigger-squeeze-thumbstick"],axes:{length:4,0:2,1:3,2:0,3:1},buttons:{length:7,0:1,1:2,2:null,3:0,4:3,5:4,6:null},gripTransform:{position:[0,-.02,.04,1],orientation:[.11*Math.PI,0,0,1]}},ke={mapping:"xr-standard",displayProfiles:{"Oculus Quest":["oculus-touch-v2","oculus-touch","generic-trigger-squeeze-thumbstick"]},profiles:["oculus-touch-v2","oculus-touch","generic-trigger-squeeze-thumbstick"],axes:{length:4,0:2,1:3,2:0,3:1},buttons:{length:7,0:1,1:2,2:null,3:0,4:3,5:4,6:null},gripTransform:{position:[0,-.02,.04,1],orientation:[.11*Math.PI,0,0,1]}},ze={mapping:"xr-standard",displayProfiles:{"Oculus Quest":["oculus-touch-v2","oculus-touch","generic-trigger-squeeze-thumbstick"]},profiles:["oculus-touch-v3","oculus-touch-v2","oculus-touch","generic-trigger-squeeze-thumbstick"],axes:{length:4,0:2,1:3,2:0,3:1},buttons:{length:7,0:1,1:2,2:null,3:0,4:3,5:4,6:null},gripTransform:{position:[0,-.02,.04,1],orientation:[.11*Math.PI,0,0,1]}},Ve={mapping:"xr-standard",profiles:["htc-vive","generic-trigger-squeeze-touchpad"],displayProfiles:{"HTC Vive":["htc-vive","generic-trigger-squeeze-touchpad"],"HTC Vive DVT":["htc-vive","generic-trigger-squeeze-touchpad"],"Valve Index":["valve-index","generic-trigger-squeeze-touchpad-thumbstick"]},buttons:{length:3,0:1,1:2,2:0},gripTransform:{position:[0,0,.05,1]},targetRayTransform:{orientation:[-.08*Math.PI,0,0,1]},userAgentOverrides:{Firefox:{axes:{invert:[1,3]}}}},Ue={mapping:"xr-standard",profiles:["samsung-gearvr","generic-trigger-touchpad"],buttons:{length:3,0:1,1:null,2:0},gripTransform:{orientation:[.11*Math.PI,0,0,1]}},He={mapping:"xr-standard",profiles:["samsung-odyssey","microsoft-mixed-reality","generic-trigger-squeeze-touchpad-thumbstick"],buttons:{length:4,0:1,1:0,2:2,3:4},gripTransform:{position:[0,-.02,.04,1],orientation:[.11*Math.PI,0,0,1]}},Xe={mapping:"xr-standard",profiles:["microsoft-mixed-reality","generic-trigger-squeeze-touchpad-thumbstick"],buttons:{length:4,0:1,1:0,2:2,3:4},gripTransform:{position:[0,-.02,.04,1],orientation:[.11*Math.PI,0,0,1]}},We={"Daydream Controller":{mapping:"",profiles:["google-daydream","generic-trigger-touchpad"],buttons:{length:3,0:null,1:null,2:0}},"Gear VR Controller":Ue,"HTC Vive Focus Controller":{mapping:"xr-standard",profiles:["htc-vive-focus","generic-trigger-touchpad"],buttons:{length:3,0:1,1:null,2:0}},"Oculus Go Controller":Ge,"Oculus Touch (Right)":Qe,"Oculus Touch (Left)":Qe,"Oculus Touch V2 (Right)":ke,"Oculus Touch V2 (Left)":ke,"Oculus Touch V3 (Right)":ze,"Oculus Touch V3 (Left)":ze,"OpenVR Gamepad":Ve,"Spatial Controller (Spatial Interaction Source) 045E-065A":Xe,"Spatial Controller (Spatial Interaction Source) 045E-065D":He,"Windows Mixed Reality (Right)":Xe,"Windows Mixed Reality (Left)":Xe};const je=f(.155,-.465,-.15),qe=f(-.155,-.465,-.15),Ye=f(0,0,-.25),Ze=f(0,0,.05),Je=f(-.08,.14,.08),Ke=.4,$e=.4,et=.61,tt=.175,it=.12,rt=.87,st=180/Math.PI;class nt{constructor(){this.hand="right",this.headElbowOffset=je,this.controllerQ=M(),this.lastControllerQ=M(),this.headQ=M(),this.headPos=u(),this.elbowPos=u(),this.wristPos=u(),this.time=null,this.lastTime=null,this.rootQ=M(),this.position=u()}setHandedness(e){this.hand!=e&&(this.hand=e,"left"==this.hand?this.headElbowOffset=qe:this.headElbowOffset=je)}update(e,t){this.time=X(),e&&(P(this.lastControllerQ,this.controllerQ),P(this.controllerQ,e)),t&&(h(this.headPos,t),c(this.headQ,t));let i=this.getHeadYawOrientation_(),r=this.quatAngle_(this.lastControllerQ,this.controllerQ);r/((this.time-this.lastTime)/1e3)>et?_(this.rootQ,this.rootQ,i,Math.min(r/tt,1)):P(this.rootQ,i);let s=f(0,0,-1);E(s,s,this.controllerQ);let n=y(s,[0,1,0]),a=this.clamp_((n-it)/rt,0,1),o=R(this.rootQ);F(o,o),x(o,o,this.controllerQ);let l=this.elbowPos;m(l,this.headPos),g(l,l,this.headElbowOffset);let A=p(Je);v(A,A,a),g(l,l,A);let d=this.quatAngle_(o,M())*st,u=(1-Math.pow(d/180,4))*(Ke+(1-Ke)*a*$e),w=M();_(w,w,o,u);let b=F(M(),w),S=R(o);x(S,S,b);let T=this.wristPos;m(T,Ze),E(T,T,w),g(T,T,Ye),E(T,T,S),g(T,T,l);let B=p(Je);v(B,B,a),g(this.position,this.wristPos,B),E(this.position,this.position,this.rootQ),this.lastTime=this.time}getPosition(){return this.position}getHeadYawOrientation_(){let e=u();return function(e,t,i){function r(e,t,i){return e<t?t:e>i?i:e}var s=t[0]*t[0],n=t[1]*t[1],a=t[2]*t[2],o=t[3]*t[3];if("XYZ"===i)e[0]=Math.atan2(2*(t[0]*t[3]-t[1]*t[2]),o-s-n+a),e[1]=Math.asin(r(2*(t[0]*t[2]+t[1]*t[3]),-1,1)),e[2]=Math.atan2(2*(t[2]*t[3]-t[0]*t[1]),o+s-n-a);else if("YXZ"===i)e[0]=Math.asin(r(2*(t[0]*t[3]-t[1]*t[2]),-1,1)),e[1]=Math.atan2(2*(t[0]*t[2]+t[1]*t[3]),o-s-n+a),e[2]=Math.atan2(2*(t[0]*t[1]+t[2]*t[3]),o-s+n-a);else if("ZXY"===i)e[0]=Math.asin(r(2*(t[0]*t[3]+t[1]*t[2]),-1,1)),e[1]=Math.atan2(2*(t[1]*t[3]-t[2]*t[0]),o-s-n+a),e[2]=Math.atan2(2*(t[2]*t[3]-t[0]*t[1]),o-s+n-a);else if("ZYX"===i)e[0]=Math.atan2(2*(t[0]*t[3]+t[2]*t[1]),o-s-n+a),e[1]=Math.asin(r(2*(t[1]*t[3]-t[0]*t[2]),-1,1)),e[2]=Math.atan2(2*(t[0]*t[1]+t[2]*t[3]),o+s-n-a);else if("YZX"===i)e[0]=Math.atan2(2*(t[0]*t[3]-t[2]*t[1]),o-s+n-a),e[1]=Math.atan2(2*(t[1]*t[3]-t[0]*t[2]),o+s-n-a),e[2]=Math.asin(r(2*(t[0]*t[1]+t[2]*t[3]),-1,1));else{if("XZY"!==i)return void console.log("No order given for quaternion to euler conversion.");e[0]=Math.atan2(2*(t[0]*t[3]+t[1]*t[2]),o-s+n-a),e[1]=Math.atan2(2*(t[0]*t[2]+t[1]*t[3]),o+s-n-a),e[2]=Math.asin(r(2*(t[2]*t[3]-t[0]*t[1]),-1,1))}}(e,this.headQ,"YXZ"),function(e,t,i,r){let s=.5*Math.PI/180;t*=s,i*=s,r*=s;let n=Math.sin(t),a=Math.cos(t),o=Math.sin(i),l=Math.cos(i),A=Math.sin(r),h=Math.cos(r);return e[0]=n*l*h-a*o*A,e[1]=a*o*h+n*l*A,e[2]=a*l*A-n*o*h,e[3]=a*l*h+n*o*A,e}(M(),0,e[1]*st,0)}clamp_(e,t,i){return Math.min(Math.max(e,t),i)}quatAngle_(e,t){let i=[0,0,-1],r=[0,0,-1];return E(i,i,e),E(r,r,t),function(e,t){let i=f(e[0],e[1],e[2]),r=f(t[0],t[1],t[2]);w(i,i),w(r,r);let s=y(i,r);return s>1?0:s<-1?Math.PI:Math.acos(s)}(i,r)}}const at=Symbol("@@webxr-polyfill/XRRemappedGamepad"),ot={pressed:!1,touched:!1,value:0};Object.freeze(ot);class lt{constructor(e,t,i){if(i||(i={}),i.userAgentOverrides)for(let e in i.userAgentOverrides)if(navigator.userAgent.includes(e)){let t=i.userAgentOverrides[e];for(let e in t)e in i?Object.assign(i[e],t[e]):i[e]=t[e];break}let r=new Array(i.axes&&i.axes.length?i.axes.length:e.axes.length),s=new Array(i.buttons&&i.buttons.length?i.buttons.length:e.buttons.length),a=null;if(i.gripTransform){let e=i.gripTransform.orientation||[0,0,0,1];A(a=n(),B(e,e),i.gripTransform.position||[0,0,0])}let o=null;if(i.targetRayTransform){let e=i.targetRayTransform.orientation||[0,0,0,1];A(o=n(),B(e,e),i.targetRayTransform.position||[0,0,0])}let l=i.profiles;i.displayProfiles&&t.displayName in i.displayProfiles&&(l=i.displayProfiles[t.displayName]),this[at]={gamepad:e,map:i,profiles:l||[e.id],mapping:i.mapping||e.mapping,axes:r,buttons:s,gripTransform:a,targetRayTransform:o},this._update()}_update(){let e=this[at].gamepad,t=this[at].map,i=this[at].axes;for(let r=0;r<i.length;++r)t.axes&&r in t.axes?null===t.axes[r]?i[r]=0:i[r]=e.axes[t.axes[r]]:i[r]=e.axes[r];if(t.axes&&t.axes.invert)for(let e of t.axes.invert)e<i.length&&(i[e]*=-1);let r=this[at].buttons;for(let i=0;i<r.length;++i)t.buttons&&i in t.buttons?null===t.buttons[i]?r[i]=ot:r[i]=e.buttons[t.buttons[i]]:r[i]=e.buttons[i]}get id(){return""}get _profiles(){return this[at].profiles}get index(){return-1}get connected(){return this[at].gamepad.connected}get timestamp(){return this[at].gamepad.timestamp}get mapping(){return this[at].mapping}get axes(){return this[at].axes}get buttons(){return this[at].buttons}get hapticActuators(){return this[at].gamepad.hapticActuators}}class At{constructor(e,t,i=0,r=-1){this.polyfill=e,this.display=t,this.nativeGamepad=null,this.gamepad=null,this.inputSource=new we(this),this.lastPosition=u(),this.emulatedPosition=!1,this.basePoseMatrix=n(),this.outputMatrix=n(),this.primaryButtonIndex=i,this.primaryActionPressed=!1,this.primarySqueezeButtonIndex=r,this.primarySqueezeActionPressed=!1,this.handedness="",this.targetRayMode="gaze",this.armModel=null}get profiles(){return this.gamepad?this.gamepad._profiles:[]}updateFromGamepad(e){this.nativeGamepad!==e&&(this.nativeGamepad=e,this.gamepad=e?new lt(e,this.display,We[e.id]):null),this.handedness=""===e.hand?"none":e.hand,this.gamepad&&this.gamepad._update(),e.pose?(this.targetRayMode="tracked-pointer",this.emulatedPosition=!e.pose.hasPosition):""===e.hand&&(this.targetRayMode="gaze",this.emulatedPosition=!1)}updateBasePoseMatrix(){if(this.nativeGamepad&&this.nativeGamepad.pose){let e=this.nativeGamepad.pose,t=e.position,i=e.orientation;if(!t&&!i)return;t?(this.lastPosition[0]=t[0],this.lastPosition[1]=t[1],this.lastPosition[2]=t[2]):e.hasPosition?t=this.lastPosition:(this.armModel||(this.armModel=new nt),this.armModel.setHandedness(this.nativeGamepad.hand),this.armModel.update(i,this.polyfill.getBasePoseMatrix()),t=this.armModel.getPosition()),A(this.basePoseMatrix,i,t)}else e=this.basePoseMatrix,t=this.polyfill.getBasePoseMatrix(),e[0]=t[0],e[1]=t[1],e[2]=t[2],e[3]=t[3],e[4]=t[4],e[5]=t[5],e[6]=t[6],e[7]=t[7],e[8]=t[8],e[9]=t[9],e[10]=t[10],e[11]=t[11],e[12]=t[12],e[13]=t[13],e[14]=t[14],e[15]=t[15];var e,t;return this.basePoseMatrix}getXRPose(e,t){switch(this.updateBasePoseMatrix(),t){case"target-ray":e._transformBasePoseMatrix(this.outputMatrix,this.basePoseMatrix),this.gamepad&&this.gamepad[at].targetRayTransform&&l(this.outputMatrix,this.outputMatrix,this.gamepad[at].targetRayTransform);break;case"grip":if(!this.nativeGamepad||!this.nativeGamepad.pose)return null;e._transformBasePoseMatrix(this.outputMatrix,this.basePoseMatrix),this.gamepad&&this.gamepad[at].gripTransform&&l(this.outputMatrix,this.outputMatrix,this.gamepad[at].gripTransform);break;default:return null}return e._adjustForOriginOffset(this.outputMatrix),new XRPose(new XRRigidTransform(this.outputMatrix),this.emulatedPosition)}}const ht=!1,ct={highRefreshRate:!0},dt={oculus:1,openvr:1,"spatial controller (spatial interaction source)":1};let ut=0;class pt{constructor(e,t,i={}){if(this.mode=e,this.enabledFeatures=t,this.outputContext=null,this.immersive="immersive-vr"==e||"immersive-ar"==e,this.ended=null,this.baseLayer=null,this.id=++ut,this.modifiedCanvasLayer=!1,this.outputContext&&!ht){const e=i.renderContextType||"2d";this.renderContext=this.outputContext.canvas.getContext(e)}}}class ft extends Ne{constructor(e,t){const{canPresent:i}=t.capabilities;super(e),this.display=t,this.frame=new e.VRFrameData,this.sessions=new Map,this.immersiveSession=null,this.canPresent=i,this.baseModelMatrix=n(),this.gamepadInputSources={},this.tempVec3=new Float32Array(3),this.onVRDisplayPresentChange=this.onVRDisplayPresentChange.bind(this),e.window.addEventListener("vrdisplaypresentchange",this.onVRDisplayPresentChange),this.CAN_USE_GAMEPAD=e.navigator&&"getGamepads"in e.navigator,this.HAS_BITMAP_SUPPORT=Te(e)}get depthNear(){return this.display.depthNear}set depthNear(e){this.display.depthNear=e}get depthFar(){return this.display.depthFar}set depthFar(e){this.display.depthFar=e}onBaseLayerSet(e,t){const i=this.sessions.get(e),r=t.context.canvas;if(i.immersive){const e=this.display.getEyeParameters("left"),s=this.display.getEyeParameters("right");r.width=2*Math.max(e.renderWidth,s.renderWidth),r.height=Math.max(e.renderHeight,s.renderHeight),this.display.requestPresent([{source:r,attributes:ct}]).then(()=>{ht||this.global.document.body.contains(r)||(i.modifiedCanvasLayer=!0,this.global.document.body.appendChild(r),Be(r)),i.baseLayer=t})}else i.baseLayer=t}isSessionSupported(e){return"immersive-ar"!=e&&("immersive-vr"!=e||!1!==this.canPresent)}isFeatureSupported(e){switch(e){case"viewer":case"local":case"local-floor":return!0;case"bounded":case"unbounded":default:return!1}}async requestSession(e,t){if(!this.isSessionSupported(e))return Promise.reject();let i="immersive-vr"==e;if(i){const e=this.global.document.createElement("canvas");if(!ht){e.getContext("webgl")}await this.display.requestPresent([{source:e,attributes:ct}])}const r=new pt(e,t,{renderContextType:this.HAS_BITMAP_SUPPORT?"bitmaprenderer":"2d"});return this.sessions.set(r.id,r),i&&(this.immersiveSession=r,this.dispatchEvent("@@webxr-polyfill/vr-present-start",r.id)),Promise.resolve(r.id)}requestAnimationFrame(e){return this.display.requestAnimationFrame(e)}getPrimaryButtonIndex(e){let t=0,i=e.id.toLowerCase();for(let e in dt)if(i.includes(e)){t=dt[e];break}return Math.min(t,e.buttons.length-1)}onFrameStart(e,t){this.display.depthNear=t.depthNear,this.display.depthFar=t.depthFar,this.display.getFrameData(this.frame);const i=this.sessions.get(e);if(i.immersive&&this.CAN_USE_GAMEPAD){let e=this.gamepadInputSources;this.gamepadInputSources={};let t=this.global.navigator.getGamepads();for(let r=0;r<t.length;++r){let s=t[r];if(s&&s.displayId>0){let t=e[r];if(t||(t=new At(this,this.display,this.getPrimaryButtonIndex(s))),t.updateFromGamepad(s),this.gamepadInputSources[r]=t,-1!=t.primaryButtonIndex){let e=s.buttons[t.primaryButtonIndex].pressed;e&&!t.primaryActionPressed?this.dispatchEvent("@@webxr-polyfill/input-select-start",{sessionId:i.id,inputSource:t.inputSource}):!e&&t.primaryActionPressed&&this.dispatchEvent("@@webxr-polyfill/input-select-end",{sessionId:i.id,inputSource:t.inputSource}),t.primaryActionPressed=e}if(-1!=t.primarySqueezeButtonIndex){let e=s.buttons[t.primarySqueezeButtonIndex].pressed;e&&!t.primarySqueezeActionPressed?this.dispatchEvent("@@webxr-polyfill/input-squeeze-start",{sessionId:i.id,inputSource:t.inputSource}):!e&&t.primarySqueezeActionPressed&&this.dispatchEvent("@@webxr-polyfill/input-squeeze-end",{sessionId:i.id,inputSource:t.inputSource}),t.primarySqueezeActionPressed=e}}}}if(!ht&&!i.immersive&&i.baseLayer){const e=i.baseLayer.context.canvas;d(this.frame.leftProjectionMatrix,t.inlineVerticalFieldOfView,e.width/e.height,t.depthNear,t.depthFar)}}onFrameEnd(e){const t=this.sessions.get(e);if(!t.ended&&t.baseLayer){if(t.outputContext&&(!t.immersive||this.display.capabilities.hasExternalDisplay)){const e=t.immersive&&this.display.capabilities.hasExternalDisplay,i=t.baseLayer.context.canvas,r=e?i.width/2:i.width,s=i.height;if(!ht){const e=t.outputContext.canvas,n=e.width,a=e.height,o=t.renderContext;this.HAS_BITMAP_SUPPORT?i.transferToImageBitmap?o.transferFromImageBitmap(i.transferToImageBitmap()):this.global.createImageBitmap(i,0,0,r,s,{resizeWidth:n,resizeHeight:a}).then(e=>o.transferFromImageBitmap(e)):o.drawImage(i,0,0,r,s,0,0,n,a)}}t.immersive&&t.baseLayer&&this.display.submitFrame()}}cancelAnimationFrame(e){this.display.cancelAnimationFrame(e)}async endSession(e){const t=this.sessions.get(e);if(!t.ended)return t.immersive?this.display.exitPresent():void(t.ended=!0)}doesSessionSupportReferenceSpace(e,t){const i=this.sessions.get(e);return!i.ended&&i.enabledFeatures.has(t)}requestStageBounds(){if(this.display.stageParameters){const e=this.display.stageParameters.sizeX,t=this.display.stageParameters.sizeZ,i=[];return i.push(-e/2),i.push(-t/2),i.push(e/2),i.push(-t/2),i.push(e/2),i.push(t/2),i.push(-e/2),i.push(t/2),i}return null}async requestFrameOfReferenceTransform(e,t){return("local-floor"===e||"bounded-floor"===e)&&this.display.stageParameters&&this.display.stageParameters.sittingToStandingTransform?this.display.stageParameters.sittingToStandingTransform:null}getProjectionMatrix(e){if("left"===e)return this.frame.leftProjectionMatrix;if("right"===e)return this.frame.rightProjectionMatrix;if("none"===e)return this.frame.leftProjectionMatrix;throw new Error("eye must be of type 'left' or 'right'")}getViewport(e,t,i,r){const s=this.sessions.get(e),{width:n,height:a}=i.context.canvas;if(!s.immersive)return r.x=r.y=0,r.width=n,r.height=a,!0;if("left"===t||"none"===t)r.x=0;else{if("right"!==t)return!1;r.x=n/2}return r.y=0,r.width=n/2,r.height=a,!0}getBasePoseMatrix(){let{position:e,orientation:t}=this.frame.pose;return e||t?(e||((e=this.tempVec3)[0]=e[1]=e[2]=0),A(this.baseModelMatrix,t,e),this.baseModelMatrix):this.baseModelMatrix}getBaseViewMatrix(e){if("left"===e||"none"===e)return this.frame.leftViewMatrix;if("right"===e)return this.frame.rightViewMatrix;throw new Error("eye must be of type 'left' or 'right'")}getInputSources(){let e=[];for(let t in this.gamepadInputSources)e.push(this.gamepadInputSources[t].inputSource);return e}getInputPose(e,t,i){if(!t)return null;for(let r in this.gamepadInputSources){let s=this.gamepadInputSources[r];if(s.inputSource===e)return s.getXRPose(t,i)}return null}onWindowResize(){}onVRDisplayPresentChange(e){this.display.isPresenting||this.sessions.forEach(e=>{if(e.immersive&&!e.ended){if(e.modifiedCanvasLayer){const t=e.baseLayer.context.canvas;document.body.removeChild(t),t.setAttribute("style","")}this.immersiveSession===e&&(this.immersiveSession=null),this.dispatchEvent("@@webxr-polyfill/vr-present-end",e.id)}})}}const mt=!1;let gt=0;class vt{constructor(e,t){this.mode=e,this.enabledFeatures=t,this.ended=null,this.baseLayer=null,this.id=++gt}}const wt=async function(e,t){if(t.webvr){let t=await async function(e){let t=null;if("getVRDisplays"in e.navigator)try{const i=await e.navigator.getVRDisplays();i&&i.length&&(t=new ft(e,i[0]))}catch(e){}return t}(e);if(t)return t}let i=(e=>{var t=!1;return Pe=e.navigator.userAgent||e.navigator.vendor||e.opera,(/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows 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Float32Array(16),this.leftProjectionMatrix=new Float32Array(16),this.pose=null}),new class extends ft{constructor(e,t){const i=new Oe(t||{});super(e,i),this.display=i,this.frame={rightViewMatrix:new Float32Array(16),leftViewMatrix:new Float32Array(16),rightProjectionMatrix:new Float32Array(16),leftProjectionMatrix:new Float32Array(16),pose:null,timestamp:null}}}(e,t.cardboardConfig)):new class extends Ne{constructor(e){super(e),this.sessions=new Map,this.projectionMatrix=n(),this.identityMatrix=n()}onBaseLayerSet(e,t){this.sessions.get(e).baseLayer=t}isSessionSupported(e){return"inline"==e}isFeatureSupported(e){switch(e){case"viewer":return!0;default:return!1}}async requestSession(e,t){if(!this.isSessionSupported(e))return Promise.reject();const i=new vt(e,t);return this.sessions.set(i.id,i),Promise.resolve(i.id)}requestAnimationFrame(e){return window.requestAnimationFrame(e)}cancelAnimationFrame(e){window.cancelAnimationFrame(e)}onFrameStart(e,t){if(mt)return;const i=this.sessions.get(e);if(i.baseLayer){const e=i.baseLayer.context.canvas;d(this.projectionMatrix,t.inlineVerticalFieldOfView,e.width/e.height,t.depthNear,t.depthFar)}}onFrameEnd(e){}async endSession(e){this.sessions.get(e).ended=!0}doesSessionSupportReferenceSpace(e,t){const i=this.sessions.get(e);return!i.ended&&i.enabledFeatures.has(t)}requestStageBounds(){return null}async requestFrameOfReferenceTransform(e,t){return null}getProjectionMatrix(e){return this.projectionMatrix}getViewport(e,t,i,r){const{width:s,height:n}=i.context.canvas;return this.sessions.get(e),r.x=r.y=0,r.width=s,r.height=n,!0}getBasePoseMatrix(){return this.identityMatrix}getBaseViewMatrix(e){return this.identityMatrix}getInputSources(){return[]}getInputPose(e,t,i){return null}onWindowResize(){}}(e)},yt={global:e,webvr:!0,cardboard:!0,cardboardConfig:null,allowCardboardOnDesktop:!1},bt=["navigator","HTMLCanvasElement","WebGLRenderingContext"];return class{constructor(e={}){this.config=Object.freeze(Object.assign({},yt,e)),this.global=this.config.global,this.nativeWebXR="xr"in this.global.navigator,this.injected=!1,this.nativeWebXR?this._injectCompatibilityShims(this.global):this._injectPolyfill(this.global)}_injectPolyfill(e){if(!bt.every(t=>!!e[t]))throw new Error(`Global must have the following attributes : ${bt}`);for(const t of Object.keys(_e))void 0!==e[t]?console.warn(`${t} already defined on global.`):e[t]=_e[t];Fe(e.WebGLRenderingContext)&&(Re(e.HTMLCanvasElement),e.OffscreenCanvas&&Re(e.OffscreenCanvas),e.WebGL2RenderingContext&&Fe(e.WebGL2RenderingContext),window.isSecureContext||console.warn("WebXR Polyfill Warning:\nThis page is not running in a secure context (https:// or localhost)!\nThis means that although the page may be able to use the WebXR Polyfill it will\nnot be able to use native WebXR implementations, and as such will not be able to\naccess dedicated VR or AR hardware, and will not be able to take advantage of\nany performance improvements a native WebXR implementation may offer. Please\nhost this content on a secure origin for the best user experience.\n")),this.injected=!0,this._patchNavigatorXR()}_patchNavigatorXR(){let e=wt(this.global,this.config);this.xr=new _e.XRSystem(e),Object.defineProperty(this.global.navigator,"xr",{value:this.xr,configurable:!0})}_injectCompatibilityShims(e){if(!bt.every(t=>!!e[t]))throw new Error(`Global must have the following attributes : ${bt}`);if(e.navigator.xr&&"supportsSession"in e.navigator.xr&&!("isSessionSupported"in e.navigator.xr)){let t=e.navigator.xr.supportsSession;e.navigator.xr.isSessionSupported=function(e){return t.call(this,e).then(()=>!0).catch(()=>!1)},e.navigator.xr.supportsSession=function(e){return console.warn("navigator.xr.supportsSession() is deprecated. Please call navigator.xr.isSessionSupported() instead and check the boolean value returned when the promise resolves."),t.call(this,e)}}}}});