/**
 * @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},B=function(e,t){return e[0]=t[0],e[1]=t[1],e[2]=t[2],e[3]=t[3],e},P=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 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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 ${G}`);if(super(e),"bounded-floor"===e&&!t)throw new Error("XRReferenceSpace cannot use 'bounded-floor' type if the platform does not provide the floor level");(function(e){return"bounded-floor"===e||"local-floor"===e})(e)&&!t&&((t=a(new Float32Array(16)))[13]=O),this._inverseBaseMatrix=t||a(new Float32Array(16)),this[N]={type:e,transform:t,originOffset:a(new 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s=Object.create(null),n=new J(s);this[$]={device:e,eye:i,viewport:n,temp:s,sessionId:r,transform:t}}get eye(){return this[$].eye}get projectionMatrix(){return this[$].device.getProjectionMatrix(this.eye)}get transform(){return this[$].transform}_getViewport(e){if(this[$].device.getViewport(this[$].sessionId,this.eye,e,this[$].temp))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[we].viewerSpace._ensurePoseUpdated(t,this[te].id),e._ensurePoseUpdated(t,this[te].id);let r=e._getSpaceRelativeTransform(i[we].viewerSpace);const s=[];for(let r of i[we].viewSpaces){r._ensurePoseUpdated(t,this[te].id);let i=e._getSpaceRelativeTransform(r),n=new ee(t,i,r.eye,this[te].sessionId);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/polyfilled-xr-compatible"),he=Symbol("@@webxr-polyfill/xr-compatible"),ce=Symbol("@@webxr-polyfill/XRWebGLLayer"),de=Object.freeze({antialias:!0,depth:!1,stencil:!1,alpha:!0,multiview:!1,ignoreDepthValues:!1,framebufferScaleFactor:1});const ue=Symbol("@@webxr-polyfill/XRInputSourceEvent");class pe extends Event{constructor(e,t){super(e,t),this[ue]={frame:t.frame,inputSource:t.inputSource},Object.setPrototypeOf(this,pe.prototype)}get frame(){return this[ue].frame}get inputSource(){return this[ue].inputSource}}const fe=Symbol("@@webxr-polyfill/XRSessionEvent");class me extends Event{constructor(e,t){super(e,t),this[fe]={session:t.session},Object.setPrototypeOf(this,me.prototype)}get session(){return this[fe].session}}const ge=Symbol("@@webxr-polyfill/XRInputSourcesChangeEvent");class ve extends Event{constructor(e,t){super(e,t),this[ge]={session:t.session,added:t.added,removed:t.removed},Object.setPrototypeOf(this,ve.prototype)}get session(){return this[ge].session}get added(){return this[ge].added}get removed(){return this[ge].removed}}const we=Symbol("@@webxr-polyfill/XRSession");class ye extends L{constructor(e){super(e)}get eye(){return this._specialType}_onPoseUpdate(e){this._inverseBaseMatrix=e.getBaseViewMatrix(this._specialType)}}class be extends i{constructor(e,t,i){super();let r="inline"!=t,s=new le({inlineVerticalFieldOfView:r?null:.5*Math.PI});this[we]={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"),viewSpaces:[],currentInputSources:[]},r?this[we].viewSpaces.push(new ye("left"),new ye("right")):this[we].viewSpaces.push(new 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this.dispatchEvent("focus",{session:this});this[we].ended=!0,this[we].stopDeviceFrameLoop(),e.removeEventListener("@@webxr-polyfill/vr-present-end",this[we].onPresentationEnd),e.removeEventListener("@@webxr-polyfill/vr-present-start",this[we].onPresentationStart),e.removeEventListener("@@webxr-polyfill/input-select-start",this[we].onSelectStart),e.removeEventListener("@@webxr-polyfill/input-select-end",this[we].onSelectEnd),this.dispatchEvent("end",new me("end",{session:this}))}),e.addEventListener("@@webxr-polyfill/vr-present-end",this[we].onPresentationEnd),this[we].onPresentationStart=(e=>{e!==this[we].id&&(this[we].suspended=!0,this[we].stopDeviceFrameLoop(),this.dispatchEvent("blur",{session:this}))}),e.addEventListener("@@webxr-polyfill/vr-present-start",this[we].onPresentationStart),this[we].onSelectStart=(e=>{e.sessionId===this[we].id&&this[we].dispatchInputSourceEvent("selectstart",e.inputSource)}),e.addEventListener("@@webxr-polyfill/input-select-start",this[we].onSelectStart),this[we].onSelectEnd=(e=>{e.sessionId===this[we].id&&(this[we].dispatchInputSourceEvent("selectend",e.inputSource),this[we].dispatchInputSourceEvent("select",e.inputSource))}),e.addEventListener("@@webxr-polyfill/input-select-end",this[we].onSelectEnd),this[we].onSqueezeStart=(e=>{e.sessionId===this[we].id&&this[we].dispatchInputSourceEvent("squeezestart",e.inputSource)}),e.addEventListener("@@webxr-polyfill/input-squeeze-start",this[we].onSqueezeStart),this[we].onSqueezeEnd=(e=>{e.sessionId===this[we].id&&(this[we].dispatchInputSourceEvent("squeezeend",e.inputSource),this[we].dispatchInputSourceEvent("squeeze",e.inputSource))}),e.addEventListener("@@webxr-polyfill/input-squeeze-end",this[we].onSqueezeEnd),this[we].dispatchInputSourceEvent=((t,i)=>{const r=new ne(e,this,this[we].id),s=new pe(t,{frame:r,inputSource:i});r[te].active=!0,this.dispatchEvent(t,s),r[te].active=!1}),this[we].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[we].activeRenderState}get environmentBlendMode(){return this[we].device.environmentBlendMode||"opaque"}async requestReferenceSpace(e){if(this[we].ended)return;if(!G.includes(e))throw new TypeError(`XRReferenceSpaceType must be one of ${G}`);if(!this[we].device.doesSessionSupportReferenceSpace(this[we].id,e))throw new DOMException(`The ${e} reference space is not supported by this session.`,"NotSupportedError");if("viewer"===e)return this[we].viewerSpace;let t=await this[we].device.requestFrameOfReferenceTransform(e);if("bounded-floor"===e){if(!t)throw new DOMException(`${e} XRReferenceSpace not supported by this device.`,"NotSupportedError");if(!this[we].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[we].ended)return;const t=++this[we].frameHandle;return this[we].frameCallbacks.push({handle:t,callback:e,cancelled:!1}),t}cancelAnimationFrame(e){let t=this[we].frameCallbacks,i=t.findIndex(t=>t&&t.handle===e);i>-1&&(t[i].cancelled=!0,t.splice(i,1)),(t=this[we].currentFrameCallbacks)&&(i=t.findIndex(t=>t&&t.handle===e))>-1&&(t[i].cancelled=!0)}get inputSources(){return this[we].device.getInputSources()}async end(){if(!this[we].ended)return this[we].immersive&&(this[we].ended=!0,this[we].device.removeEventListener("@@webxr-polyfill/vr-present-start",this[we].onPresentationStart),this[we].device.removeEventListener("@@webxr-polyfill/vr-present-end",this[we].onPresentationEnd),this[we].device.removeEventListener("@@webxr-polyfill/input-select-start",this[we].onSelectStart),this[we].device.removeEventListener("@@webxr-polyfill/input-select-end",this[we].onSelectEnd),this.dispatchEvent("end",new me("end",{session:this}))),this[we].stopDeviceFrameLoop(),this[we].device.endSession(this[we].id)}updateRenderState(e){if(this[we].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[we].immersive){throw new Error("inlineVerticalFieldOfView must not be set for an XRRenderState passed to updateRenderState for an immersive session.")}e.inlineVerticalFieldOfView=Math.min(3.13,Math.max(.01,e.inlineVerticalFieldOfView))}if(null===this[we].pendingRenderState){const e=this[we].activeRenderState;this[we].pendingRenderState={depthNear:e.depthNear,depthFar:e.depthFar,inlineVerticalFieldOfView:e.inlineVerticalFieldOfView,baseLayer:e.baseLayer}}Object.assign(this[we].pendingRenderState,e)}_checkInputSourcesChange(){const e=[],t=[],i=this.inputSources,r=this[we].currentInputSources;for(const t of i)r.includes(t)||e.push(t);for(const e of r)i.includes(e)||t.push(e);(e.length>0||t.length>0)&&this.dispatchEvent("inputsourceschange",new ve("inputsourceschange",{session:this,added:e,removed:t})),this[we].currentInputSources.length=0;for(const e of i)this[we].currentInputSources.push(e)}}const Ee=Symbol("@@webxr-polyfill/XRInputSource");class Se{constructor(e){this[Ee]={impl:e,gripSpace:new L("grip",this),targetRaySpace:new L("target-ray",this)}}get 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T(e,t,i,r){this.gl=e,this.cardboardUI=t,this.bufferScale=i,this.dirtySubmitFrameBindings=r,this.ctxAttribs=e.getContextAttributes(),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=g(e,F,R,this.attribs),this.uniforms=v(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()}T.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()},T.prototype.onResize=function(){var e=this.gl,t=this,i=[e.RENDERBUFFER_BINDING,e.TEXTURE_BINDING_2D,e.TEXTURE0];_(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()},T.prototype.patch=function(){if(!this.isPatched){var e=this,t=this.gl.canvas,i=this.gl;o()||(t.width=p()*this.bufferScale,t.height=f()*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,b(t)}},T.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(){b(t)},1)}},T.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]},T.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),_(e,i,function(e){t.realBindFramebuffer.call(e,e.FRAMEBUFFER,null),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),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)}),o()){var r=e.canvas;r.width==t.bufferWidth&&r.height==t.bufferHeight||(t.bufferWidth=r.width,t.bufferHeight=r.height,t.onResize())}},T.prototype.updateDeviceInfo=function(e){var t=this.gl,i=this,r=[t.ARRAY_BUFFER_BINDING,t.ELEMENT_ARRAY_BUFFER_BINDING];_(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}})},T.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},T.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},T.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 B=["attribute vec2 position;","uniform mat4 projectionMat;","void main() {","  gl_Position = projectionMat * vec4( position, -1.0, 1.0 );","}"].join("\n"),P=["precision mediump float;","uniform vec4 color;","void main() {","  gl_FragColor = color;","}"].join("\n"),C=Math.PI/180,D=.3125;function I(e){this.gl=e,this.attribs={position:0},this.program=g(e,B,P,this.attribs),this.uniforms=v(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 L(e){this.coefficients=e}I.prototype.destroy=function(){var e=this.gl;this.listener&&e.canvas.removeEventListener("click",this.listener,!1),e.deleteProgram(this.program),e.deleteBuffer(this.vertexBuffer)},I.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)},I.prototype.onResize=function(){var e=this.gl,t=this,i=[e.ARRAY_BUFFER_BINDING];_(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)*C,n=Math.cos(s),a=Math.sin(s);i.push(D*n*A+r,D*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*C);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)})},I.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];_(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()})},I.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)},L.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},L.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 O=Math.PI/180,N=180/Math.PI,G=function(e,t,i){this.x=e||0,this.y=t||0,this.z=i||0};G.prototype={constructor:G,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 Q,k,z=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 V(e){this.width=e.width||p(),this.height=e.height||f(),this.widthMeters=e.widthMeters,this.heightMeters=e.heightMeters,this.bevelMeters=e.bevelMeters}z.prototype={constructor:z,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===Q&&(Q=new G),(k=e.dot(t)+1)<1e-6?(k=0,Math.abs(e.x)>Math.abs(e.z)?Q.set(-e.y,e.x,0):Q.set(0,-e.z,e.y)):Q.crossVectors(e,t),this.x=Q.x,this.y=Q.y,this.z=Q.z,this.w=k,this.normalize(),this}};var U=new V({widthMeters:.11,heightMeters:.062,bevelMeters:.004}),H=new V({widthMeters:.1038,heightMeters:.0584,bevelMeters:.004}),X={CardboardV1:new j({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 j({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 W(e,t){this.viewer=X.CardboardV2,this.updateDeviceParams(e),this.distortion=new L(this.viewer.distortionCoefficients);for(var i=0;i<t.length;i++){var r=t[i];X[r.id]=new j(r)}}function j(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}W.prototype.updateDeviceParams=function(e){this.device=this.determineDevice_(e)||this.device},W.prototype.getDevice=function(){return this.device},W.prototype.setViewer=function(e){this.viewer=e,this.distortion=new L(this.viewer.distortionCoefficients)},W.prototype.determineDevice_=function(e){if(!e)return o()?(console.warn("Using fallback iOS device measurements."),H):(console.warn("Using fallback Android device measurements."),U);var t=.0254/e.xdpi,i=.0254/e.ydpi,r=p(),s=f();return new V({widthMeters:t*r,heightMeters:i*s,bevelMeters:.001*e.bevelMm})},W.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=N*Math.atan(i.distort(s/r)),A=N*Math.atan(i.distort(n/r)),h=N*Math.atan(i.distort(a/r)),c=N*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)}},W.prototype.getLeftEyeVisibleTanAngles=function(){var e=this.viewer,t=this.device,i=this.distortion,r=Math.tan(-O*e.fov),s=Math.tan(O*e.fov),n=Math.tan(O*e.fov),a=Math.tan(-O*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},W.prototype.getLeftEyeNoLensTanAngles=function(){var e=this.viewer,t=this.device,i=this.distortion,r=new Float32Array(4),s=i.distortInverse(Math.tan(-O*e.fov)),n=i.distortInverse(Math.tan(O*e.fov)),a=i.distortInverse(Math.tan(O*e.fov)),o=i.distortInverse(Math.tan(-O*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},W.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}},W.prototype.getFieldOfViewLeftEye=function(e){return e?this.getUndistortedFieldOfViewLeftEye():this.getDistortedFieldOfViewLeftEye()},W.prototype.getFieldOfViewRightEye=function(e){var t=this.getFieldOfViewLeftEye(e);return{leftDegrees:t.rightDegrees,rightDegrees:t.leftDegrees,upDegrees:t.upDegrees,downDegrees:t.downDegrees}},W.prototype.getUndistortedFieldOfViewLeftEye=function(){var e=this.getUndistortedParams_();return{leftDegrees:N*Math.atan(e.outerDist),rightDegrees:N*Math.atan(e.innerDist),downDegrees:N*Math.atan(e.bottomDist),upDegrees:N*Math.atan(e.topDist)}},W.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}},W.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(O*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}},W.Viewers=X;var q={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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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 Y(e,t){if(this.dpdb=q,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 Z(e){this.xdpi=e.xdpi,this.ydpi=e.ydpi,this.bevelMm=e.bevelMm}function J(e,t){this.set(e,t)}function K(e,t){this.kFilter=e,this.isDebug=t,this.currentAccelMeasurement=new J,this.currentGyroMeasurement=new J,this.previousGyroMeasurement=new J,o()?this.filterQ=new z(-1,0,0,1):this.filterQ=new z(1,0,0,1),this.previousFilterQ=new z,this.previousFilterQ.copy(this.filterQ),this.accelQ=new z,this.isOrientationInitialized=!1,this.estimatedGravity=new G,this.measuredGravity=new G,this.gyroIntegralQ=new z}function $(e,t){this.predictionTimeS=e,this.isDebug=t,this.previousQ=new z,this.previousTimestampS=null,this.deltaQ=new z,this.outQ=new z}function ee(e,t,i,r){this.yawOnly=i,this.accelerometer=new G,this.gyroscope=new G,this.filter=new K(e,r),this.posePredictor=new $(t,r),this.isFirefoxAndroid=A(),this.isIOS=o();var s=h();this.isDeviceMotionInRadians=!this.isIOS&&s&&s<66,this.isWithoutDeviceMotion=this.isIOS||c(),this.filterToWorldQ=new z,o()?this.filterToWorldQ.setFromAxisAngle(new G(1,0,0),Math.PI/2):this.filterToWorldQ.setFromAxisAngle(new G(1,0,0),-Math.PI/2),this.inverseWorldToScreenQ=new z,this.worldToScreenQ=new z,this.originalPoseAdjustQ=new z,this.originalPoseAdjustQ.setFromAxisAngle(new G(0,0,1),-window.orientation*Math.PI/180),this.setScreenTransform_(),u()&&this.filterToWorldQ.multiply(this.inverseWorldToScreenQ),this.resetQ=new z,this.orientationOut_=new Float32Array(4),this.start()}Y.prototype.getDeviceParams=function(){return this.deviceParams},Y.prototype.recalculateDeviceParams_=function(){var e=this.calcDeviceParams_();e?(this.deviceParams=e,this.onDeviceParamsUpdated&&this.onDeviceParamsUpdated(this.deviceParams)):console.error("Failed to recalculate device parameters.")},Y.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=p(),r=f();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 Z({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},Y.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},J.prototype.set=function(e,t){this.sample=e,this.timestampS=t},J.prototype.copy=function(e){this.set(e.sample,e.timestampS)},K.prototype.addAccelMeasurement=function(e,t){this.currentAccelMeasurement.set(e,t)},K.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)},K.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 z;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 z;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)",N*((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 z;n.copy(this.filterQ),n.multiply(s),this.filterQ.slerp(n,1-this.kFilter),this.previousFilterQ.copy(this.filterQ)},K.prototype.getOrientation=function(){return this.filterQ},K.prototype.accelToQuaternion_=function(e){var t=new G;t.copy(e),t.normalize();var i=new z;return i.setFromUnitVectors(new G(0,0,-1),t),i.inverse(),i},K.prototype.gyroToQuaternionDelta_=function(e,t){var i=new z,r=new G;return r.copy(e),r.normalize(),i.setFromAxisAngle(r,e.length()*t),i},$.prototype.getPrediction=function(e,t,i){if(!this.previousTimestampS)return this.previousQ.copy(e),this.previousTimestampS=i,e;var r=new G;r.copy(t),r.normalize();var s=t.length();if(s<20*O)return this.isDebug&&console.log("Moving slowly, at %s deg/s: no prediction",(N*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},ee.prototype.getPosition=function(){return null},ee.prototype.getOrientation=function(){var e=void 0;if(this.isWithoutDeviceMotion&&this._deviceOrientationQ){this.deviceOrientationFixQ=this.deviceOrientationFixQ||(r=(new z).setFromAxisAngle(new G(0,0,-1),0),s=new z,-90===window.orientation?s.setFromAxisAngle(new G(0,1,0),Math.PI/-2):s.setFromAxisAngle(new G(0,1,0),Math.PI/2),r.multiply(s)),this.deviceOrientationFilterToWorldQ=this.deviceOrientationFilterToWorldQ||((i=new z).setFromAxisAngle(new G(1,0,0),-Math.PI/2),i),e=this._deviceOrientationQ;var t=new z;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 z;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_},ee.prototype.resetPose=function(){this.resetQ.copy(this.filter.getOrientation()),this.resetQ.x=0,this.resetQ.y=0,this.resetQ.z*=-1,this.resetQ.normalize(),u()&&this.resetQ.multiply(this.inverseWorldToScreenQ),this.resetQ.multiply(this.originalPoseAdjustQ)},ee.prototype.onDeviceOrientation_=function(e){this._deviceOrientationQ=this._deviceOrientationQ||new z;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)},ee.prototype.onDeviceMotion_=function(e){this.updateDeviceMotion_(e)},ee.prototype.updateDeviceMotion_=function(e){var t=e.accelerationIncludingGravity,i=e.rotationRate,r=e.timeStamp/1e3,s=r-this.previousTimestampS;return s<0?(M("fusion-pose-sensor:invalid:non-monotonic","Invalid timestamps detected: non-monotonic timestamp from devicemotion"),void(this.previousTimestampS=r)):s<=.001||s>1?(M("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),d()?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.addAccelMeasurement(this.accelerometer,r),this.filter.addGyroMeasurement(this.gyroscope,r),void(this.previousTimestampS=r))},ee.prototype.onOrientationChange_=function(e){this.setScreenTransform_()},ee.prototype.onMessage_=function(e){var t=e.data;if(t&&t.type){var i=t.type.toLowerCase();"devicemotion"===i&&this.updateDeviceMotion_(t.deviceMotionEvent)}},ee.prototype.setScreenTransform_=function(){switch(this.worldToScreenQ.set(0,0,0,1),window.orientation){case 0:break;case 90:this.worldToScreenQ.setFromAxisAngle(new G(0,0,1),-Math.PI/2);break;case-90:this.worldToScreenQ.setFromAxisAngle(new G(0,0,1),Math.PI/2)}this.inverseWorldToScreenQ.copy(this.worldToScreenQ),this.inverseWorldToScreenQ.inverse()},ee.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=S(document.referrer),i=S(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_)},ee.prototype.stop=function(){window.removeEventListener("devicemotion",this.onDeviceMotionCallback_),window.removeEventListener("deviceorientation",this.onDeviceOrientationCallback_),window.removeEventListener("orientationchange",this.onOrientationChangeCallback_),window.removeEventListener("message",this.onMessageCallback_)};var te=new G(1,0,0),ie=new G(0,0,1),re=new z;re.setFromAxisAngle(te,-Math.PI/2),re.multiply((new z).setFromAxisAngle(ie,Math.PI/2));var se=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 z,this._outQ=new z,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 ee(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(re),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 ne(){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()}ne.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;u()?(i.width="20%",i.marginLeft="40%",i.marginTop="3%"):(i.width="50%",i.marginLeft="25%",i.marginTop="25%")},ne.prototype.hide=function(){this.overlay.style.display="none"},ne.prototype.showTemporarily=function(e,t){this.show(t),this.timer=setTimeout(this.hide.bind(this),e)},ne.prototype.disableShowTemporarily=function(){clearTimeout(this.timer)},ne.prototype.update=function(){this.disableShowTemporarily(),!u()&&w()?this.show():this.hide()},ne.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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ge(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 x("VRDisplayCapabilities.prototype.hasOrientation","VRDisplay.prototype.getFrameData"),e.hasOrientation}}})}function ve(e){var t=!("wakelock"in(e=e||{}))||e.wakelock;this.isPolyfilled=!0,this.displayId=de++,this.displayName="",this.depthNear=.01,this.depthFar=1e4,this.isPresenting=!1,Object.defineProperty(this,"isConnected",{get:function(){return x("VRDisplay.prototype.isConnected","VRDisplayCapabilities.prototype.hasExternalDisplay"),!1}}),this.capabilities=new ge({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&&w()&&(this.wakelock_=new ce)}ve.prototype.getFrameData=function(e){return E(e,this._getPose(),this)},ve.prototype.getPose=function(){return x("VRDisplay.prototype.getPose","VRDisplay.prototype.getFrameData"),this._getPose()},ve.prototype.resetPose=function(){return x("VRDisplay.prototype.resetPose"),this._resetPose()},ve.prototype.getImmediatePose=function(){return x("VRDisplay.prototype.getImmediatePose","VRDisplay.prototype.getFrameData"),this._getPose()},ve.prototype.requestAnimationFrame=function(e){return fe(e)},ve.prototype.cancelAnimationFrame=function(e){return me(e)},ve.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_},ve.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}},ve.prototype.requestPresent=function(e){var t=this.isPresenting,i=this;return e instanceof Array||(x("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||ue,A=n.rightBounds||pe;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()||(m(),s(new Error("Unable to present.")))}else r()}else s(new Error("VRDisplay is not capable of presenting."))})},ve.prototype.exitPresent=function(){var e=this.isPresenting,t=this;return this.isPresenting=!1,this.layer_=null,this.disableWakeLock(),new Promise(function(i,r){e?(!m()&&o()&&(t.endPresent_(),t.fireVRDisplayPresentChange_()),l()&&(t.removeFullscreenWrapper(),t.removeFullscreenListeners_(),t.endPresent_(),t.fireVRDisplayPresentChange_()),i()):r(new Error("Was not presenting to VRDisplay."))})},ve.prototype.getLayers=function(){return this.layer_?[this.layer_]:[]},ve.prototype.fireVRDisplayPresentChange_=function(){var e=new CustomEvent("vrdisplaypresentchange",{detail:{display:this}});window.dispatchEvent(e)},ve.prototype.fireVRDisplayConnect_=function(){var e=new CustomEvent("vrdisplayconnect",{detail:{display:this}});window.dispatchEvent(e)},ve.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))},ve.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}},ve.prototype.enableWakeLock=function(){this.wakelock_&&this.wakelock_.enable()},ve.prototype.disableWakeLock=function(){this.wakelock_&&this.wakelock_.disable()},ve.prototype.beginPresent_=function(){},ve.prototype.endPresent_=function(){},ve.prototype.submitFrame=function(e){},ve.prototype.getEyeParameters=function(e){return null};var we={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},ye={LEFT:"left",RIGHT:"right"};function be(e){var t=y({},we);e=y(t,e||{}),ve.call(this,{wakelock:e.MOBILE_WAKE_LOCK}),this.config=e,this.displayName="Cardboard VRDisplay",this.capabilities=new ge({hasPosition:!1,hasOrientation:!0,hasExternalDisplay:!1,canPresent:!0,maxLayers:1}),this.stageParameters=null,this.bufferScale_=this.config.BUFFER_SCALE,this.poseSensor_=new se(this.config),this.distorter_=null,this.cardboardUI_=null,this.dpdb_=new Y(this.config.DPDB_URL,this.onDeviceParamsUpdated_.bind(this)),this.deviceInfo_=new W(this.dpdb_.getDeviceParams(),e.ADDITIONAL_VIEWERS),this.viewerSelector_=new le(e.DEFAULT_VIEWER),this.viewerSelector_.onChange(this.onViewerChanged_.bind(this)),this.deviceInfo_.setViewer(this.viewerSelector_.getCurrentViewer()),this.config.ROTATE_INSTRUCTIONS_DISABLED||(this.rotateInstructions_=new ne),o()&&window.addEventListener("resize",this.onResize_.bind(this))}return be.prototype=Object.create(ve.prototype),be.prototype._getPose=function(){return{position:null,orientation:this.poseSensor_.getOrientation(),linearVelocity:null,linearAcceleration:null,angularVelocity:null,angularAcceleration:null}},be.prototype._resetPose=function(){this.poseSensor_.resetPose&&this.poseSensor_.resetPose()},be.prototype._getFieldOfView=function(e){var t;if(e==ye.LEFT)t=this.deviceInfo_.getFieldOfViewLeftEye();else{if(e!=ye.RIGHT)return console.error("Invalid eye provided: %s",e),null;t=this.deviceInfo_.getFieldOfViewRightEye()}return t},be.prototype._getEyeOffset=function(e){var t;if(e==ye.LEFT)t=[.5*-this.deviceInfo_.viewer.interLensDistance,0,0];else{if(e!=ye.RIGHT)return console.error("Invalid eye provided: %s",e),null;t=[.5*this.deviceInfo_.viewer.interLensDistance,0,0]}return t},be.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 x("VRFieldOfView","VRFrameData's projection matrices"),i}}),r},be.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_)},be.prototype.updateBounds_=function(){this.layer_&&this.distorter_&&(this.layer_.leftBounds||this.layer_.rightBounds)&&this.distorter_.setTextureBounds(this.layer_.leftBounds,this.layer_.rightBounds)},be.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=p()*this.bufferScale_,e.canvas.height=f()*this.bufferScale_,this.cardboardUI_=new I(e)):(this.config.CARDBOARD_UI_DISABLED||(this.cardboardUI_=new I(e)),this.distorter_=new T(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_&&(u()&&w()?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_())},be.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)},be.prototype.updatePresent_=function(){this.endPresent_(),this.beginPresent_()},be.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()}},be.prototype.onOrientationChange_=function(e){this.viewerSelector_.hide(),this.rotateInstructions_&&this.rotateInstructions_.update(),this.onResize_()},be.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("; ")+";"),b(t.canvas)}},be.prototype.onViewerChanged_=function(e){this.deviceInfo_.setViewer(e),this.distorter_&&this.distorter_.updateDeviceInfo(this.deviceInfo_),this.fireVRDisplayDeviceParamsChange_()},be.prototype.fireVRDisplayDeviceParamsChange_=function(){var e=new CustomEvent("vrdisplaydeviceparamschange",{detail:{vrdisplay:this,deviceInfo:this.deviceInfo_}});window.dispatchEvent(e)},be.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},be.VRDisplay=ve,be}()}(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")}getViewport(e,t,i,r){throw new Error("Not implemented")}getProjectionMatrix(e){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:null,1:null,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",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]}}}},ze={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]}},Ve={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]}},Ue={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]}},He={"Daydream Controller":{mapping:"",profiles:["google-daydream","generic-trigger-touchpad"],buttons:{length:3,0:null,1:null,2:0}},"Gear VR Controller":ze,"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,"OpenVR Gamepad":ke,"Spatial Controller (Spatial Interaction Source) 045E-065A":Ue,"Spatial Controller (Spatial Interaction Source) 045E-065D":Ve,"Windows Mixed Reality (Right)":Ue,"Windows Mixed Reality (Left)":Ue};const Xe=f(.155,-.465,-.15),We=f(-.155,-.465,-.15),je=f(0,0,-.25),qe=f(0,0,.05),Ye=f(-.08,.14,.08),Ze=.4,Je=.4,Ke=.61,$e=.175,et=.12,tt=.87,it=180/Math.PI;class rt{constructor(){this.hand="right",this.headElbowOffset=Xe,this.controllerQ=M(),this.lastControllerQ=M(),this.headQ=M(),this.headPos=u(),this.elbowPos=u(),this.wristPos=u(),this.time=null,this.lastTime=null,this.rootQ=M(),this.position=u()}setHandedness(e){this.hand!=e&&(this.hand=e,"left"==this.hand?this.headElbowOffset=We:this.headElbowOffset=Xe)}update(e,t){this.time=X(),e&&(B(this.lastControllerQ,this.controllerQ),B(this.controllerQ,e)),t&&(h(this.headPos,t),c(this.headQ,t));let i=this.getHeadYawOrientation_(),r=this.quatAngle_(this.lastControllerQ,this.controllerQ);r/((this.time-this.lastTime)/1e3)>Ke?_(this.rootQ,this.rootQ,i,Math.min(r/$e,1)):B(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-et)/tt,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(Ye);v(A,A,a),g(l,l,A);let d=this.quatAngle_(o,M())*it,u=(1-Math.pow(d/180,4))*(Ze+(1-Ze)*a*Je),w=M();_(w,w,o,u);let b=F(M(),w),S=R(o);x(S,S,b);let T=this.wristPos;m(T,qe),E(T,T,w),g(T,T,je),E(T,T,S),g(T,T,l);let P=p(Ye);v(P,P,a),g(this.position,this.wristPos,P),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]*it,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 st=Symbol("@@webxr-polyfill/XRRemappedGamepad"),nt={pressed:!1,touched:!1,value:0};Object.freeze(nt);class at{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(),P(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(),P(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[st]={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[st].gamepad,t=this[st].map,i=this[st].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[st].buttons;for(let i=0;i<r.length;++i)t.buttons&&i in t.buttons?null===t.buttons[i]?r[i]=nt:r[i]=e.buttons[t.buttons[i]]:r[i]=e.buttons[i]}get id(){return""}get _profiles(){return this[st].profiles}get index(){return-1}get connected(){return this[st].gamepad.connected}get timestamp(){return this[st].gamepad.timestamp}get mapping(){return this[st].mapping}get axes(){return this[st].axes}get buttons(){return this[st].buttons}get hapticActuators(){return this[st].gamepad.hapticActuators}}class ot{constructor(e,t,i=0,r=-1){this.polyfill=e,this.display=t,this.nativeGamepad=null,this.gamepad=null,this.inputSource=new Se(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 at(e,this.display,He[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 rt),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[st].targetRayTransform&&l(this.outputMatrix,this.outputMatrix,this.gamepad[st].targetRayTransform);break;case"grip":if(!this.nativeGamepad||!this.nativeGamepad.pose)return null;e._transformBasePoseMatrix(this.outputMatrix,this.basePoseMatrix),this.gamepad&&this.gamepad[st].gripTransform&&l(this.outputMatrix,this.outputMatrix,this.gamepad[st].gripTransform);break;default:return null}return e._adjustForOriginOffset(this.outputMatrix),new XRPose(new XRRigidTransform(this.outputMatrix),this.emulatedPosition)}}const lt=!1,At={highRefreshRate:!0},ht={oculus:1,openvr:1,"spatial controller (spatial interaction source)":1};let ct=0;class dt{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=++ct,this.modifiedCanvasLayer=!1,this.outputContext&&!lt){const e=i.renderContextType||"2d";this.renderContext=this.outputContext.canvas.getContext(e)}}}class ut 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:At}]).then(()=>{lt||this.global.document.body.contains(r)||(i.modifiedCanvasLayer=!0,this.global.document.body.appendChild(r),Pe(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(!lt){e.getContext("webgl")}await this.display.requestPresent([{source:e,attributes:At}])}const r=new dt(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 ht)if(i.includes(e)){t=ht[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 ot(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(!lt&&!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(!lt){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 pt=!1;let ft=0;class mt{constructor(e,t){this.mode=e,this.enabledFeatures=t,this.ended=null,this.baseLayer=null,this.id=++ft}}const gt=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 ut(e,i[0]))}catch(e){}return t}(e);if(t)return t}let i=(e=>{var t=!1;return Be=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 ce|xda|xiino/i.test(Be)||/1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v 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Float32Array(16),this.leftProjectionMatrix=new Float32Array(16),this.pose=null}),new class extends ut{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 mt(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(pt)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)},vt={global:e,webvr:!0,cardboard:!0,cardboardConfig:null,allowCardboardOnDesktop:!1},wt=["navigator","HTMLCanvasElement","WebGLRenderingContext"];return class{constructor(e={}){this.config=Object.freeze(Object.assign({},vt,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(!wt.every(t=>!!e[t]))throw new Error(`Global must have the following attributes : ${wt}`);for(const t of Object.keys(_e))void 0!==e[t]?console.warn(`${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=gt(this.global,this.config);this.xr=new _e.XRSystem(e),Object.defineProperty(this.global.navigator,"xr",{value:this.xr,configurable:!0})}_injectCompatibilityShims(e){if(!wt.every(t=>!!e[t]))throw new Error(`Global must have the following attributes : ${wt}`);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)}}}}});