/**
 * @license
 * webvr-polyfill
 * 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
 * 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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/**
 * @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
 * gl-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
 * webvr-polyfill-dpdb
 * 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
 * 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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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()}x.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()},x.prototype.onResize=function(){var e=this.gl,t=this,i=[e.RENDERBUFFER_BINDING,e.TEXTURE_BINDING_2D,e.TEXTURE0];C(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()},x.prototype.patch=function(){if(!this.isPatched){var n=this,t=this.gl.canvas,A=this.gl;h()||(t.width=g()*this.bufferScale,t.height=v()*this.bufferScale,Object.defineProperty(t,"width",{configurable:!0,enumerable:!0,get:function(){return n.bufferWidth},set:function(e){n.bufferWidth=e,n.realCanvasWidth.set.call(t,e),n.onResize()}}),Object.defineProperty(t,"height",{configurable:!0,enumerable:!0,get:function(){return n.bufferHeight},set:function(e){n.bufferHeight=e,n.realCanvasHeight.set.call(t,e),n.onResize()}})),this.lastBoundFramebuffer=A.getParameter(A.FRAMEBUFFER_BINDING),null==this.lastBoundFramebuffer&&(this.lastBoundFramebuffer=this.framebuffer,this.gl.bindFramebuffer(A.FRAMEBUFFER,this.framebuffer)),this.gl.bindFramebuffer=function(e,t){n.lastBoundFramebuffer=t||n.framebuffer,n.realBindFramebuffer.call(A,e,n.lastBoundFramebuffer)},this.cullFace=A.getParameter(A.CULL_FACE),this.depthTest=A.getParameter(A.DEPTH_TEST),this.blend=A.getParameter(A.BLEND),this.scissorTest=A.getParameter(A.SCISSOR_TEST),this.stencilTest=A.getParameter(A.STENCIL_TEST),A.enable=function(e){switch(e){case A.CULL_FACE:n.cullFace=!0;break;case A.DEPTH_TEST:n.depthTest=!0;break;case A.BLEND:n.blend=!0;break;case A.SCISSOR_TEST:n.scissorTest=!0;break;case A.STENCIL_TEST:n.stencilTest=!0}n.realEnable.call(A,e)},A.disable=function(e){switch(e){case A.CULL_FACE:n.cullFace=!1;break;case A.DEPTH_TEST:n.depthTest=!1;break;case A.BLEND:n.blend=!1;break;case A.SCISSOR_TEST:n.scissorTest=!1;break;case A.STENCIL_TEST:n.stencilTest=!1}n.realDisable.call(A,e)},this.colorMask=A.getParameter(A.COLOR_WRITEMASK),A.colorMask=function(e,t,i,r){n.colorMask[0]=e,n.colorMask[1]=t,n.colorMask[2]=i,n.colorMask[3]=r,n.realColorMask.call(A,e,t,i,r)},this.clearColor=A.getParameter(A.COLOR_CLEAR_VALUE),A.clearColor=function(e,t,i,r){n.clearColor[0]=e,n.clearColor[1]=t,n.clearColor[2]=i,n.clearColor[3]=r,n.realClearColor.call(A,e,t,i,r)},this.viewport=A.getParameter(A.VIEWPORT),A.viewport=function(e,t,i,r){n.viewport[0]=e,n.viewport[1]=t,n.viewport[2]=i,n.viewport[3]=r,n.realViewport.call(A,e,t,i,r)},this.isPatched=!0,M(t)}},x.prototype.unpatch=function(){if(this.isPatched){var e=this.gl,t=this.gl.canvas;h()||(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(){M(t)},1)}},x.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]},x.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),C(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||h())&&(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)}),h()){var r=e.canvas;r.width==t.bufferWidth&&r.height==t.bufferHeight||(t.bufferWidth=r.width,t.bufferHeight=r.height,t.onResize())}},x.prototype.updateDeviceInfo=function(r){var e=this.gl,n=this,t=[e.ARRAY_BUFFER_BINDING,e.ELEMENT_ARRAY_BUFFER_BINDING];C(e,t,function(e){var t=n.computeMeshVertices_(n.meshWidth,n.meshHeight,r);if(e.bindBuffer(e.ARRAY_BUFFER,n.vertexBuffer),e.bufferData(e.ARRAY_BUFFER,t,e.STATIC_DRAW),!n.indexCount){var i=n.computeMeshIndices_(n.meshWidth,n.meshHeight);e.bindBuffer(e.ELEMENT_ARRAY_BUFFER,n.indexBuffer),e.bufferData(e.ELEMENT_ARRAY_BUFFER,i,e.STATIC_DRAW),n.indexCount=i.length}})},x.prototype.computeMeshVertices_=function(e,t,i){for(var r=new Float32Array(2*e*t*5),n=i.getLeftEyeVisibleTanAngles(),A=i.getLeftEyeNoLensTanAngles(),s=i.getLeftEyeVisibleScreenRect(A),a=0,o=0;o<2;o++){for(var l=0;l<t;l++)for(var c=0;c<e;c++,a++){var h=c/(e-1),d=l/(t-1),u=h,p=d,f=b(n[0],n[2],h),m=b(n[3],n[1],d),g=Math.sqrt(f*f+m*m),v=i.distortion.distortInverse(g),w=f*v/g,y=m*v/g;h=(w-A[0])/(A[2]-A[0]),d=(y-A[3])/(A[1]-A[3]),h=2*(s.x+h*s.width-.5),d=2*(s.y+d*s.height-.5),r[5*a+0]=h,r[5*a+1]=d,r[5*a+2]=u,r[5*a+3]=p,r[5*a+4]=o}var E=n[2]-n[0];n[0]=-(E+n[0]),n[2]=E-n[2],E=A[2]-A[0],A[0]=-(E+A[0]),A[2]=E-A[2],s.x=1-(s.x+s.width)}return r},x.prototype.computeMeshIndices_=function(e,t){for(var i=new Uint16Array(2*(e-1)*(t-1)*6),r=e/2,n=t/2,A=0,s=0,a=0;a<2;a++)for(var o=0;o<t;o++)for(var l=0;l<e;l++,A++)0!=l&&0!=o&&(l<=r==o<=n?(i[s++]=A,i[s++]=A-e-1,i[s++]=A-e,i[s++]=A-e-1,i[s++]=A,i[s++]=A-1):(i[s++]=A-1,i[s++]=A-e,i[s++]=A,i[s++]=A-e,i[s++]=A-1,i[s++]=A-e-1));return i},x.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 L=["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"),N=Math.PI/180,Q=.3125;function G(e){this.gl=e,this.attribs={position:0},this.program=y(e,L,P,this.attribs),this.uniforms=E(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 O(e){this.coefficients=e}G.prototype.destroy=function(){var e=this.gl;this.listener&&e.canvas.removeEventListener("click",this.listener,!1),e.deleteProgram(this.program),e.deleteBuffer(this.vertexBuffer)},G.prototype.listen=function(i,r){var n=this.gl.canvas;this.listener=function(e){var t=n.clientWidth/2;e.clientX>t-42&&e.clientX<t+42&&e.clientY>n.clientHeight-42?i(e):e.clientX<42&&e.clientY<42&&r(e)},n.addEventListener("click",this.listener,!1)},G.prototype.onResize=function(){var e=this.gl,f=this,t=[e.ARRAY_BUFFER_BINDING];C(e,t,function(i){var A=[],s=i.drawingBufferWidth/2,e=Math.max(screen.width,screen.height)*window.devicePixelRatio,t=i.drawingBufferWidth/e,r=t*window.devicePixelRatio,n=4*r/2,a=42*r,o=28*r/2,l=14*r;function c(e,t){var i=(90-e)*N,r=Math.cos(i),n=Math.sin(i);A.push(Q*r*o+s,Q*n*o+o),A.push(t*r*o+s,t*n*o+o)}A.push(s-n,a),A.push(s-n,i.drawingBufferHeight),A.push(s+n,a),A.push(s+n,i.drawingBufferHeight),f.gearOffset=A.length/2;for(var h=0;h<=6;h++){var d=60*h;c(d,1),c(d+12,1),c(d+20,.75),c(d+40,.75),c(d+48,1)}function u(e,t){A.push(l+e,i.drawingBufferHeight-l-t)}f.gearVertexCount=A.length/2-f.gearOffset,f.arrowOffset=A.length/2;var p=n/Math.sin(45*N);u(0,o),u(o,0),u(o+p,p),u(p,o+p),u(p,o-p),u(0,o),u(o,2*o),u(o+p,2*o-p),u(p,o-p),u(0,o),u(p,o-n),u(28*r,o-n),u(p,o+n),u(28*r,o+n),f.arrowVertexCount=A.length/2-f.arrowOffset,i.bindBuffer(i.ARRAY_BUFFER,f.vertexBuffer),i.bufferData(i.ARRAY_BUFFER,new Float32Array(A),i.STATIC_DRAW)})},G.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];C(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()})},G.prototype.renderNoState=function(){var e,t,i,r,n,A,s,a,o,l,c=this.gl;c.useProgram(this.program),c.bindBuffer(c.ARRAY_BUFFER,this.vertexBuffer),c.enableVertexAttribArray(this.attribs.position),c.vertexAttribPointer(this.attribs.position,2,c.FLOAT,!1,8,0),c.uniform4f(this.uniforms.color,1,1,1,1),e=this.projMat,t=0,i=c.drawingBufferWidth,r=0,n=c.drawingBufferHeight,a=1/(t-i),o=1/(r-n),l=1/((A=.1)-(s=1024)),e[0]=-2*a,e[1]=0,e[2]=0,e[3]=0,e[4]=0,e[5]=-2*o,e[6]=0,e[7]=0,e[8]=0,e[9]=0,e[10]=2*l,e[11]=0,e[12]=(t+i)*a,e[13]=(n+r)*o,e[14]=(s+A)*l,e[15]=1,c.uniformMatrix4fv(this.uniforms.projectionMat,!1,this.projMat),c.drawArrays(c.TRIANGLE_STRIP,0,4),c.drawArrays(c.TRIANGLE_STRIP,this.gearOffset,this.gearVertexCount),c.drawArrays(c.TRIANGLE_STRIP,this.arrowOffset,this.arrowVertexCount)},O.prototype.distortInverse=function(e){for(var t=0,i=1,r=e-this.distort(t);1e-4<Math.abs(i-t);){var n=e-this.distort(i),A=i-n*((i-t)/(n-r));t=i,i=A,r=n}return i},O.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 U=Math.PI/180,k=180/Math.PI,V=function(e,t,i){this.x=e||0,this.y=t||0,this.z=i||0};V.prototype={constructor:V,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,n=e.x,A=e.y,s=e.z,a=e.w,o=a*t+A*r-s*i,l=a*i+s*t-n*r,c=a*r+n*i-A*t,h=-n*t-A*i-s*r;return this.x=o*a+h*-n+l*-s-c*-A,this.y=l*a+h*-A+c*-n-o*-s,this.z=c*a+h*-s+o*-A-l*-n,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,n=e.z,A=t.x,s=t.y,a=t.z;return this.x=r*a-n*s,this.y=n*A-i*a,this.z=i*s-r*A,this}};var z,H,W=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 X(e){this.width=e.width||g(),this.height=e.height||v(),this.widthMeters=e.widthMeters,this.heightMeters=e.heightMeters,this.bevelMeters=e.bevelMeters}W.prototype={constructor:W,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),n=Math.cos(t/2),A=Math.cos(i/2),s=Math.sin(e/2),a=Math.sin(t/2),o=Math.sin(i/2);return this.x=s*n*A+r*a*o,this.y=r*a*A-s*n*o,this.z=r*n*o+s*a*A,this.w=r*n*A-s*a*o,this},setFromEulerYXZ:function(e,t,i){var r=Math.cos(e/2),n=Math.cos(t/2),A=Math.cos(i/2),s=Math.sin(e/2),a=Math.sin(t/2),o=Math.sin(i/2);return this.x=s*n*A+r*a*o,this.y=r*a*A-s*n*o,this.z=r*n*o-s*a*A,this.w=r*n*A+s*a*o,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,n=e.z,A=e.w,s=t.x,a=t.y,o=t.z,l=t.w;return this.x=i*l+A*s+r*o-n*a,this.y=r*l+A*a+n*s-i*o,this.z=n*l+A*o+i*a-r*s,this.w=A*l-i*s-r*a-n*o,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,n=this.z,A=this.w,s=A*e.w+i*e.x+r*e.y+n*e.z;if(s<0?(this.w=-e.w,this.x=-e.x,this.y=-e.y,this.z=-e.z,s=-s):this.copy(e),1<=s)return this.w=A,this.x=i,this.y=r,this.z=n,this;var a=Math.acos(s),o=Math.sqrt(1-s*s);if(Math.abs(o)<.001)return this.w=.5*(A+this.w),this.x=.5*(i+this.x),this.y=.5*(r+this.y),this.z=.5*(n+this.z),this;var l=Math.sin((1-t)*a)/o,c=Math.sin(t*a)/o;return this.w=A*l+this.w*c,this.x=i*l+this.x*c,this.y=r*l+this.y*c,this.z=n*l+this.z*c,this},setFromUnitVectors:function(e,t){return void 0===z&&(z=new V),(H=e.dot(t)+1)<1e-6?(H=0,Math.abs(e.x)>Math.abs(e.z)?z.set(-e.y,e.x,0):z.set(0,-e.z,e.y)):z.crossVectors(e,t),this.x=z.x,this.y=z.y,this.z=z.z,this.w=H,this.normalize(),this}};var Y=new X({widthMeters:.11,heightMeters:.062,bevelMeters:.004}),Z=new X({widthMeters:.1038,heightMeters:.0584,bevelMeters:.004}),j={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 K(e,t){this.viewer=j.CardboardV2,this.updateDeviceParams(e),this.distortion=new O(this.viewer.distortionCoefficients);for(var i=0;i<t.length;i++){var r=t[i];j[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}K.prototype.updateDeviceParams=function(e){this.device=this.determineDevice_(e)||this.device},K.prototype.getDevice=function(){return this.device},K.prototype.setViewer=function(e){this.viewer=e,this.distortion=new O(this.viewer.distortionCoefficients)},K.prototype.determineDevice_=function(e){if(!e)return h()?(console.warn("Using fallback iOS device measurements."),Z):(console.warn("Using fallback Android device measurements."),Y);var t=.0254/e.xdpi,i=.0254/e.ydpi,r=g(),n=v();return new X({widthMeters:t*r,heightMeters:i*n,bevelMeters:.001*e.bevelMm})},K.prototype.getDistortedFieldOfViewLeftEye=function(){var e=this.viewer,t=this.device,i=this.distortion,r=e.screenLensDistance,n=(t.widthMeters-e.interLensDistance)/2,A=e.interLensDistance/2,s=e.baselineLensDistance-t.bevelMeters,a=t.heightMeters-s,o=k*Math.atan(i.distort(n/r)),l=k*Math.atan(i.distort(A/r)),c=k*Math.atan(i.distort(s/r)),h=k*Math.atan(i.distort(a/r));return{leftDegrees:Math.min(o,e.fov),rightDegrees:Math.min(l,e.fov),downDegrees:Math.min(c,e.fov),upDegrees:Math.min(h,e.fov)}},K.prototype.getLeftEyeVisibleTanAngles=function(){var e=this.viewer,t=this.device,i=this.distortion,r=Math.tan(-U*e.fov),n=Math.tan(U*e.fov),A=Math.tan(U*e.fov),s=Math.tan(-U*e.fov),a=t.widthMeters/4,o=t.heightMeters/2,l=e.baselineLensDistance-t.bevelMeters-o,c=e.interLensDistance/2-a,h=-l,d=e.screenLensDistance,u=i.distort((c-a)/d),p=i.distort((h+o)/d),f=i.distort((c+a)/d),m=i.distort((h-o)/d),g=new Float32Array(4);return g[0]=Math.max(r,u),g[1]=Math.min(n,p),g[2]=Math.min(A,f),g[3]=Math.max(s,m),g},K.prototype.getLeftEyeNoLensTanAngles=function(){var e=this.viewer,t=this.device,i=this.distortion,r=new Float32Array(4),n=i.distortInverse(Math.tan(-U*e.fov)),A=i.distortInverse(Math.tan(U*e.fov)),s=i.distortInverse(Math.tan(U*e.fov)),a=i.distortInverse(Math.tan(-U*e.fov)),o=t.widthMeters/4,l=t.heightMeters/2,c=e.baselineLensDistance-t.bevelMeters-l,h=e.interLensDistance/2-o,d=-c,u=e.screenLensDistance,p=(h-o)/u,f=(d+l)/u,m=(h+o)/u,g=(d-l)/u;return r[0]=Math.max(n,p),r[1]=Math.min(A,f),r[2]=Math.min(s,m),r[3]=Math.max(a,g),r},K.prototype.getLeftEyeVisibleScreenRect=function(e){var t=this.viewer,i=this.device,r=t.screenLensDistance,n=(i.widthMeters-t.interLensDistance)/2,A=t.baselineLensDistance-i.bevelMeters,s=(e[0]*r+n)/i.widthMeters,a=(e[1]*r+A)/i.heightMeters,o=(e[2]*r+n)/i.widthMeters,l=(e[3]*r+A)/i.heightMeters;return{x:s,y:l,width:o-s,height:a-l}},K.prototype.getFieldOfViewLeftEye=function(e){return e?this.getUndistortedFieldOfViewLeftEye():this.getDistortedFieldOfViewLeftEye()},K.prototype.getFieldOfViewRightEye=function(e){var t=this.getFieldOfViewLeftEye(e);return{leftDegrees:t.rightDegrees,rightDegrees:t.leftDegrees,upDegrees:t.upDegrees,downDegrees:t.downDegrees}},K.prototype.getUndistortedFieldOfViewLeftEye=function(){var e=this.getUndistortedParams_();return{leftDegrees:k*Math.atan(e.outerDist),rightDegrees:k*Math.atan(e.innerDist),downDegrees:k*Math.atan(e.bottomDist),upDegrees:k*Math.atan(e.topDist)}},K.prototype.getUndistortedViewportLeftEye=function(){var e=this.getUndistortedParams_(),t=this.viewer,i=this.device,r=t.screenLensDistance,n=i.widthMeters/r,A=i.heightMeters/r,s=i.width/n,a=i.height/A,o=Math.round((e.eyePosX-e.outerDist)*s),l=Math.round((e.eyePosY-e.bottomDist)*a);return{x:o,y:l,width:Math.round((e.eyePosX+e.innerDist)*s)-o,height:Math.round((e.eyePosY+e.topDist)*a)-l}},K.prototype.getUndistortedParams_=function(){var e=this.viewer,t=this.device,i=this.distortion,r=e.screenLensDistance,n=e.interLensDistance/2/r,A=t.widthMeters/r,s=t.heightMeters/r,a=A/2-n,o=(e.baselineLensDistance-t.bevelMeters)/r,l=e.fov,c=i.distortInverse(Math.tan(U*l)),h=Math.min(a,c),d=Math.min(n,c),u=Math.min(o,c),p=Math.min(s-o,c);return{outerDist:h,innerDist:d,topDist:p,bottomDist:u,eyePosX:a,eyePosY:o}},K.Viewers=j;var q={format:1,last_updated:"2018-12-10T17:01:42Z",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_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 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4"}],dpi:[319.8,318.4],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"LGE/*/LG-P769/*"},{ua:"LG-P769"}],dpi:[240.6,247.5],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"LGE/*/LGMS323/*"},{ua:"LGMS323"}],dpi:[206.6,204.6],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"LGE/*/LGLS996/*"},{ua:"LGLS996"}],dpi:[403.4,401.5],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"Micromax/*/4560MMX/*"},{ua:"4560MMX"}],dpi:[240,219.4],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"Micromax/*/A250/*"},{ua:"Micromax A250"}],dpi:[480,446.4],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"Micromax/*/Micromax AQ4501/*"},{ua:"Micromax AQ4501"}],dpi:240,bw:3,ac:500},{type:"android",rules:[{mdmh:"motorola/*/G5/*"},{ua:"Moto G (5) Plus"}],dpi:[403.4,403],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"motorola/*/DROID RAZR/*"},{ua:"DROID RAZR"}],dpi:[368.1,256.7],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"motorola/*/XT830C/*"},{ua:"XT830C"}],dpi:[254,255.9],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"motorola/*/XT1021/*"},{ua:"XT1021"}],dpi:[254,256.7],bw:3,ac:500},{type:"android",rules:[{mdmh:"motorola/*/XT1023/*"},{ua:"XT1023"}],dpi:[254,256.7],bw:3,ac:500},{type:"android",rules:[{mdmh:"motorola/*/XT1028/*"},{ua:"XT1028"}],dpi:[326.6,327.6],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"motorola/*/XT1034/*"},{ua:"XT1034"}],dpi:[326.6,328.4],bw:3,ac:500},{type:"android",rules:[{mdmh:"motorola/*/XT1053/*"},{ua:"XT1053"}],dpi:[315.3,316.1],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"motorola/*/XT1562/*"},{ua:"XT1562"}],dpi:[403.4,402.7],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"motorola/*/Nexus 6/*"},{ua:"Nexus 6 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ONE TOUCH Fierce/*"},{ua:"ALCATEL ONE TOUCH Fierce"}],dpi:[240,247.5],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"THL/*/thl 5000/*"},{ua:"thl 5000"}],dpi:[480,443.3],bw:3,ac:1e3},{type:"android",rules:[{mdmh:"Fly/*/IQ4412/*"},{ua:"IQ4412"}],dpi:307.9,bw:3,ac:1e3},{type:"android",rules:[{mdmh:"ZTE/*/ZTE Blade L2/*"},{ua:"ZTE Blade L2"}],dpi:240,bw:3,ac:500},{type:"android",rules:[{mdmh:"BENEVE/*/VR518/*"},{ua:"VR518"}],dpi:480,bw:3,ac:500},{type:"ios",rules:[{res:[640,960]}],dpi:[325.1,328.4],bw:4,ac:1e3},{type:"ios",rules:[{res:[640,1136]}],dpi:[317.1,320.2],bw:3,ac:1e3},{type:"ios",rules:[{res:[750,1334]}],dpi:326.4,bw:4,ac:1e3},{type:"ios",rules:[{res:[1242,2208]}],dpi:[453.6,458.4],bw:4,ac:1e3},{type:"ios",rules:[{res:[1125,2001]}],dpi:[410.9,415.4],bw:4,ac:1e3},{type:"ios",rules:[{res:[1125,2436]}],dpi:458,bw:4,ac:1e3}]};function $(e,t){if(this.dpdb=q,this.recalculateDeviceParams_(),e){this.onDeviceParamsUpdated=t;var i=new XMLHttpRequest,r=this;i.open("GET",e,!0),i.addEventListener("load",function(){r.loading=!1,200<=i.status&&i.status<=299?(r.dpdb=JSON.parse(i.response),r.recalculateDeviceParams_()):console.error("Error loading online DPDB!")}),i.send()}}function ee(e){this.xdpi=e.xdpi,this.ydpi=e.ydpi,this.bevelMm=e.bevelMm}function te(e,t){this.set(e,t)}function ie(e,t){this.kFilter=e,this.isDebug=t,this.currentAccelMeasurement=new te,this.currentGyroMeasurement=new te,this.previousGyroMeasurement=new te,h()?this.filterQ=new W(-1,0,0,1):this.filterQ=new W(1,0,0,1),this.previousFilterQ=new W,this.previousFilterQ.copy(this.filterQ),this.accelQ=new W,this.isOrientationInitialized=!1,this.estimatedGravity=new V,this.measuredGravity=new V,this.gyroIntegralQ=new W}function re(e,t){this.predictionTimeS=e,this.isDebug=t,this.previousQ=new W,this.previousTimestampS=null,this.deltaQ=new W,this.outQ=new W}function ne(e,t,i,r){this.yawOnly=i,this.accelerometer=new V,this.gyroscope=new V,this.filter=new ie(e,r),this.posePredictor=new re(t,r),this.isFirefoxAndroid=c(),this.isIOS=h();var n=u();this.isDeviceMotionInRadians=!this.isIOS&&n&&n<66,this.isWithoutDeviceMotion=p(),this.filterToWorldQ=new W,h()?this.filterToWorldQ.setFromAxisAngle(new V(1,0,0),Math.PI/2):this.filterToWorldQ.setFromAxisAngle(new V(1,0,0),-Math.PI/2),this.inverseWorldToScreenQ=new W,this.worldToScreenQ=new W,this.originalPoseAdjustQ=new W,this.originalPoseAdjustQ.setFromAxisAngle(new V(0,0,1),-window.orientation*Math.PI/180),this.setScreenTransform_(),m()&&this.filterToWorldQ.multiply(this.inverseWorldToScreenQ),this.resetQ=new W,this.orientationOut_=new Float32Array(4),this.start()}$.prototype.getDeviceParams=function(){return this.deviceParams},$.prototype.recalculateDeviceParams_=function(){var e=this.calcDeviceParams_();e?(this.deviceParams=e,this.onDeviceParamsUpdated&&this.onDeviceParamsUpdated(this.deviceParams)):console.error("Failed to recalculate device parameters.")},$.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=g(),r=v();if(!e.devices)return console.error("DPDB has no devices section."),null;for(var n=0;n<e.devices.length;n++){var A=e.devices[n];if(A.rules)if("ios"==A.type||"android"==A.type){if(h()==("ios"==A.type)){for(var s=!1,a=0;a<A.rules.length;a++){var o=A.rules[a];if(this.ruleMatches_(o,t,i,r)){s=!0;break}}if(s){var l=A.dpi[0]||A.dpi,c=A.dpi[1]||A.dpi;return new ee({xdpi:l,ydpi:c,bevelMm:A.bw})}}}else console.warn("Device["+n+"] has invalid type.");else console.warn("Device["+n+"] has no rules section.")}return console.warn("No DPDB device match."),null},$.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 n=e.res[0],A=e.res[1];if(Math.min(i,r)!=Math.min(n,A)||Math.max(i,r)!=Math.max(n,A))return!1}return!0},te.prototype.set=function(e,t){this.sample=e,this.timestampS=t},te.prototype.copy=function(e){this.set(e.sample,e.timestampS)},ie.prototype.addAccelMeasurement=function(e,t){this.currentAccelMeasurement.set(e,t)},ie.prototype.addGyroMeasurement=function(e,t){this.currentGyroMeasurement.set(e,t);var i,r=t-this.previousGyroMeasurement.timestampS;i=r,!(isNaN(i)||i<=.001||1<i)&&this.run_(),this.previousGyroMeasurement.copy(this.currentGyroMeasurement)},ie.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 W;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,n=new W;n.setFromUnitVectors(this.estimatedGravity,this.measuredGravity),n.inverse(),this.isDebug&&console.log("Delta: %d deg, G_est: (%s, %s, %s), G_meas: (%s, %s, %s)",k*(1<(r=n).w?(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 A=new W;A.copy(this.filterQ),A.multiply(n),this.filterQ.slerp(A,1-this.kFilter),this.previousFilterQ.copy(this.filterQ)},ie.prototype.getOrientation=function(){return this.filterQ},ie.prototype.accelToQuaternion_=function(e){var t=new V;t.copy(e),t.normalize();var i=new W;return i.setFromUnitVectors(new V(0,0,-1),t),i.inverse(),i},ie.prototype.gyroToQuaternionDelta_=function(e,t){var i=new W,r=new V;return r.copy(e),r.normalize(),i.setFromAxisAngle(r,e.length()*t),i},re.prototype.getPrediction=function(e,t,i){if(!this.previousTimestampS)return this.previousQ.copy(e),this.previousTimestampS=i,e;var r=new V;r.copy(t),r.normalize();var n=t.length();if(n<20*U)return this.isDebug&&console.log("Moving slowly, at %s deg/s: no prediction",(k*n).toFixed(1)),this.outQ.copy(e),this.previousQ.copy(e),this.outQ;var A=n*this.predictionTimeS;return this.deltaQ.setFromAxisAngle(r,A),this.outQ.copy(this.previousQ),this.outQ.multiply(this.deltaQ),this.previousQ.copy(e),this.previousTimestampS=i,this.outQ},ne.prototype.getPosition=function(){return null},ne.prototype.getOrientation=function(){var e=void 0;if(this.isWithoutDeviceMotion&&this._deviceOrientationQ){this.deviceOrientationFixQ=this.deviceOrientationFixQ||(r=(new W).setFromAxisAngle(new V(0,0,-1),0),n=new W,-90===window.orientation?n.setFromAxisAngle(new V(0,1,0),Math.PI/-2):n.setFromAxisAngle(new V(0,1,0),Math.PI/2),r.multiply(n)),this.deviceOrientationFilterToWorldQ=this.deviceOrientationFilterToWorldQ||((i=new W).setFromAxisAngle(new V(1,0,0),-Math.PI/2),i),e=this._deviceOrientationQ;var t=new W;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,n,A=this.filter.getOrientation();e=this.posePredictor.getPrediction(A,this.gyroscope,this.previousTimestampS);var t=new W;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_},ne.prototype.resetPose=function(){this.resetQ.copy(this.filter.getOrientation()),this.resetQ.x=0,this.resetQ.y=0,this.resetQ.z*=-1,this.resetQ.normalize(),m()&&this.resetQ.multiply(this.inverseWorldToScreenQ),this.resetQ.multiply(this.originalPoseAdjustQ)},ne.prototype.onDeviceOrientation_=function(e){this._deviceOrientationQ=this._deviceOrientationQ||new W;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)},ne.prototype.onDeviceMotion_=function(e){this.updateDeviceMotion_(e)},ne.prototype.updateDeviceMotion_=function(e){var t=e.accelerationIncludingGravity,i=e.rotationRate,r=e.timeStamp/1e3,n=r-this.previousTimestampS;return n<0?F("fusion-pose-sensor:invalid:non-monotonic","Invalid timestamps detected: non-monotonic timestamp from devicemotion"):n<=.001||1<n?F("fusion-pose-sensor:invalid:outside-threshold","Invalid timestamps detected: Timestamp from devicemotion outside expected range."):(this.accelerometer.set(-t.x,-t.y,-t.z),f()?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)},ne.prototype.onOrientationChange_=function(e){this.setScreenTransform_()},ne.prototype.onMessage_=function(e){var t=e.data;if(t&&t.type){var i=t.type.toLowerCase();"devicemotion"===i&&this.updateDeviceMotion_(t.deviceMotionEvent)}},ne.prototype.setScreenTransform_=function(){switch(this.worldToScreenQ.set(0,0,0,1),window.orientation){case 0:break;case 90:this.worldToScreenQ.setFromAxisAngle(new V(0,0,1),-Math.PI/2);break;case-90:this.worldToScreenQ.setFromAxisAngle(new V(0,0,1),Math.PI/2)}this.inverseWorldToScreenQ.copy(this.worldToScreenQ),this.inverseWorldToScreenQ.inverse()},ne.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),h()&&(e=window.self!==window.top,t=T(document.referrer),i=T(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_)},ne.prototype.stop=function(){window.removeEventListener("devicemotion",this.onDeviceMotionCallback_),window.removeEventListener("deviceorientation",this.onDeviceOrientationCallback_),window.removeEventListener("orientationchange",this.onOrientationChangeCallback_),window.removeEventListener("message",this.onMessageCallback_)};var Ae=new V(1,0,0),se=new V(0,0,1),ae=new W;ae.setFromAxisAngle(Ae,-Math.PI/2),ae.multiply((new W).setFromAxisAngle(se,Math.PI/2));var oe=function(){function t(e){a(this,t),this.config=e,this.sensor=null,this.fusionSensor=null,this._out=new Float32Array(4),this.api=null,this.errors=[],this._sensorQ=new W,this._outQ=new W,this._onSensorRead=this._onSensorRead.bind(this),this._onSensorError=this._onSensorError.bind(this),this.init()}return o(t,[{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 ne(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(ae),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(){}}]),t}();function le(){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 n=document.createElement("div"),t=n.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(n);var A=document.createElement("div");A.style.float="left",A.innerHTML="No Cardboard viewer?";var s=document.createElement("a");s.href="https://www.google.com/get/cardboard/get-cardboard/",s.innerHTML="get one",s.target="_blank";var t=s.style;t.float="right",t.fontWeight=600,t.textTransform="uppercase",t.borderLeft="1px solid gray",t.paddingLeft="24px",t.textDecoration="none",t.color="#656A6B",n.appendChild(A),n.appendChild(s),this.overlay=e,this.text=r,this.hide()}le.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;m()?(i.width="20%",i.marginLeft="40%",i.marginTop="3%"):(i.width="50%",i.marginLeft="25%",i.marginTop="25%")},le.prototype.hide=function(){this.overlay.style.display="none"},le.prototype.showTemporarily=function(e,t){this.show(t),this.timer=setTimeout(this.hide.bind(this),e)},le.prototype.disableShowTemporarily=function(){clearTimeout(this.timer)},le.prototype.update=function(){this.disableShowTemporarily(),!m()&&_()?this.show():this.hide()},le.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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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_},be.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}},be.prototype.requestPresent=function(o){var l=this.isPresenting,c=this;return o instanceof Array||(R("VRDisplay.prototype.requestPresent with non-array argument","an array of VRLayers as the first argument"),o=[o]),new Promise(function(t,e){if(c.capabilities.canPresent)if(0==o.length||o.length>c.capabilities.maxLayers)e(new Error("Invalid number of layers."));else{var i=o[0];if(i.source){var r=i.leftBounds||ge,n=i.rightBounds||ve;if(l){var A=c.layer_;A.source!==i.source&&(A.source=i.source);for(var s=0;s<4;s++)A.leftBounds[s]=r[s],A.rightBounds[s]=n[s];return c.wrapForFullscreen(c.layer_.source),c.updatePresent_(),void t()}if(c.layer_={predistorted:i.predistorted,source:i.source,leftBounds:r.slice(0),rightBounds:n.slice(0)},c.waitingForPresent_=!1,c.layer_&&c.layer_.source){var a=c.wrapForFullscreen(c.layer_.source);c.addFullscreenListeners_(a,function(){var e=document.fullscreenElement||document.webkitFullscreenElement||document.mozFullScreenElement||document.msFullscreenElement;c.isPresenting=a===e,c.isPresenting?(screen.orientation&&screen.orientation.lock&&screen.orientation.lock("landscape-primary").catch(function(e){console.error("screen.orientation.lock() failed due to",e.message)}),c.waitingForPresent_=!1,c.beginPresent_(),t()):(screen.orientation&&screen.orientation.unlock&&screen.orientation.unlock(),c.removeFullscreenWrapper(),c.disableWakeLock(),c.endPresent_(),c.removeFullscreenListeners_()),c.fireVRDisplayPresentChange_()},function(){c.waitingForPresent_&&(c.removeFullscreenWrapper(),c.removeFullscreenListeners_(),c.disableWakeLock(),c.waitingForPresent_=!1,c.isPresenting=!1,e(new Error("Unable to present.")))}),function(e){if(d())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}(a)?(c.enableWakeLock(),c.waitingForPresent_=!0):(h()||d())&&(c.enableWakeLock(),c.isPresenting=!0,c.beginPresent_(),c.fireVRDisplayPresentChange_(),t())}c.waitingForPresent_||h()||(w(),e(new Error("Unable to present.")))}else t()}else e(new Error("VRDisplay is not capable of presenting."))})},be.prototype.exitPresent=function(){var i=this.isPresenting,r=this;return this.isPresenting=!1,this.layer_=null,this.disableWakeLock(),new Promise(function(e,t){i?(!w()&&h()&&(r.endPresent_(),r.fireVRDisplayPresentChange_()),d()&&(r.removeFullscreenWrapper(),r.removeFullscreenListeners_(),r.endPresent_(),r.fireVRDisplayPresentChange_()),e()):t(new Error("Was not presenting to VRDisplay."))})},be.prototype.getLayers=function(){return this.layer_?[this.layer_]:[]},be.prototype.fireVRDisplayPresentChange_=function(){var e=new CustomEvent("vrdisplaypresentchange",{detail:{display:this}});window.dispatchEvent(e)},be.prototype.fireVRDisplayConnect_=function(){var e=new CustomEvent("vrdisplayconnect",{detail:{display:this}});window.dispatchEvent(e)},be.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))},be.prototype.removeFullscreenListeners_=function(){if(this.fullscreenEventTarget_){var 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_e={ADDITIONAL_VIEWERS:[],DEFAULT_VIEWER:"",MOBILE_WAKE_LOCK:!0,DEBUG:!(be.prototype.getEyeParameters=function(e){return null}),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},De={LEFT:"left",RIGHT:"right"};function Me(e){var t=D({},_e);e=D(t,e||{}),be.call(this,{wakelock:e.MOBILE_WAKE_LOCK}),this.config=e,this.displayName="Cardboard VRDisplay",this.capabilities=new Ee({hasPosition:!1,hasOrientation:!0,hasExternalDisplay:!1,canPresent:!0,maxLayers:1}),this.stageParameters=null,this.bufferScale_=this.config.BUFFER_SCALE,this.poseSensor_=new oe(this.config),this.distorter_=null,this.cardboardUI_=null,this.dpdb_=new $(this.config.DPDB_URL,this.onDeviceParamsUpdated_.bind(this)),this.deviceInfo_=new K(this.dpdb_.getDeviceParams(),e.ADDITIONAL_VIEWERS),this.viewerSelector_=new de(e.DEFAULT_VIEWER),this.viewerSelector_.onChange(this.onViewerChanged_.bind(this)),this.deviceInfo_.setViewer(this.viewerSelector_.getCurrentViewer()),this.config.ROTATE_INSTRUCTIONS_DISABLED||(this.rotateInstructions_=new le),h()&&window.addEventListener("resize",this.onResize_.bind(this))}return(Me.prototype=Object.create(be.prototype))._getPose=function(){return{position:null,orientation:this.poseSensor_.getOrientation(),linearVelocity:null,linearAcceleration:null,angularVelocity:null,angularAcceleration:null}},Me.prototype._resetPose=function(){this.poseSensor_.resetPose&&this.poseSensor_.resetPose()},Me.prototype._getFieldOfView=function(e){var t;if(e==De.LEFT)t=this.deviceInfo_.getFieldOfViewLeftEye();else{if(e!=De.RIGHT)return console.error("Invalid eye provided: %s",e),null;t=this.deviceInfo_.getFieldOfViewRightEye()}return t},Me.prototype._getEyeOffset=function(e){var t;if(e==De.LEFT)t=[.5*-this.deviceInfo_.viewer.interLensDistance,0,0];else{if(e!=De.RIGHT)return console.error("Invalid eye provided: %s",e),null;t=[.5*this.deviceInfo_.viewer.interLensDistance,0,0]}return t},Me.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 R("VRFieldOfView","VRFrameData's projection matrices"),i}}),r},Me.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_)},Me.prototype.updateBounds_=function(){this.layer_&&this.distorter_&&(this.layer_.leftBounds||this.layer_.rightBounds)&&this.distorter_.setTextureBounds(this.layer_.leftBounds,this.layer_.rightBounds)},Me.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=g()*this.bufferScale_,e.canvas.height=v()*this.bufferScale_,this.cardboardUI_=new G(e)):(this.config.CARDBOARD_UI_DISABLED||(this.cardboardUI_=new G(e)),this.distorter_=new x(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_&&(m()&&_()?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_())},Me.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)},Me.prototype.updatePresent_=function(){this.endPresent_(),this.beginPresent_()},Me.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").canvas;t.width==this.lastWidth&&t.height==this.lastHeight||this.cardboardUI_.onResize(),this.lastWidth=t.width,this.lastHeight=t.height,this.cardboardUI_.render()}},Me.prototype.onOrientationChange_=function(e){this.viewerSelector_.hide(),this.rotateInstructions_&&this.rotateInstructions_.update(),this.onResize_()},Me.prototype.onResize_=function(e){if(this.layer_){var t=this.layer_.source.getContext("webgl");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("; ")+";"),M(t.canvas)}},Me.prototype.onViewerChanged_=function(e){this.deviceInfo_.setViewer(e),this.distorter_&&this.distorter_.updateDeviceInfo(this.deviceInfo_),this.fireVRDisplayDeviceParamsChange_()},Me.prototype.fireVRDisplayDeviceParamsChange_=function(){var e=new CustomEvent("vrdisplaydeviceparamschange",{detail:{vrdisplay:this,deviceInfo:this.deviceInfo_}});window.dispatchEvent(e)},Me.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},Me.VRDisplay=be,Me}()}(e={exports:{}},e.exports),e.exports),s=(t=A)&&t.__esModule&&Object.prototype.hasOwnProperty.call(t,"default")?t.default:t,a={ADDITIONAL_VIEWERS:[],DEFAULT_VIEWER:"",PROVIDE_MOBILE_VRDISPLAY:!0,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};function o(e){this.config=r(r({},a),e),this.polyfillDisplays=[],this.enabled=!1,this.hasNative="getVRDisplays"in navigator,this.native={},this.native.getVRDisplays=navigator.getVRDisplays,this.native.VRFrameData=window.VRFrameData,this.native.VRDisplay=window.VRDisplay,(!this.hasNative||this.config.PROVIDE_MOBILE_VRDISPLAY&&i())&&(this.enable(),this.getVRDisplays().then(function(e){e&&e[0]&&e[0].fireVRDisplayConnect_&&e[0].fireVRDisplayConnect_()}))}o.prototype.getPolyfillDisplays=function(){if(this._polyfillDisplaysPopulated)return this.polyfillDisplays;if(i()){var e=new s({ADDITIONAL_VIEWERS:this.config.ADDITIONAL_VIEWERS,DEFAULT_VIEWER:this.config.DEFAULT_VIEWER,MOBILE_WAKE_LOCK:this.config.MOBILE_WAKE_LOCK,DEBUG:this.config.DEBUG,DPDB_URL:this.config.DPDB_URL,CARDBOARD_UI_DISABLED:this.config.CARDBOARD_UI_DISABLED,K_FILTER:this.config.K_FILTER,PREDICTION_TIME_S:this.config.PREDICTION_TIME_S,ROTATE_INSTRUCTIONS_DISABLED:this.config.ROTATE_INSTRUCTIONS_DISABLED,YAW_ONLY:this.config.YAW_ONLY,BUFFER_SCALE:this.config.BUFFER_SCALE,DIRTY_SUBMIT_FRAME_BINDINGS:this.config.DIRTY_SUBMIT_FRAME_BINDINGS});this.polyfillDisplays.push(e)}return this._polyfillDisplaysPopulated=!0,this.polyfillDisplays},o.prototype.enable=function(){if(this.enabled=!0,this.hasNative&&this.native.VRFrameData){var t=this.native.VRFrameData,i=new this.native.VRFrameData,r=this.native.VRDisplay.prototype.getFrameData;window.VRDisplay.prototype.getFrameData=function(e){e instanceof t?r.call(this,e):(r.call(this,i),e.pose=i.pose,n(i.leftProjectionMatrix,e.leftProjectionMatrix),n(i.rightProjectionMatrix,e.rightProjectionMatrix),n(i.leftViewMatrix,e.leftViewMatrix),n(i.rightViewMatrix,e.rightViewMatrix))}}navigator.getVRDisplays=this.getVRDisplays.bind(this),window.VRDisplay=s.VRDisplay,window.VRFrameData=s.VRFrameData},o.prototype.getVRDisplays=function(){var t=this;this.config;return this.hasNative?this.native.getVRDisplays.call(navigator).then(function(e){return 0<e.length?e:t.getPolyfillDisplays()}):Promise.resolve(this.getPolyfillDisplays())},o.version="0.10.10",o.VRFrameData=s.VRFrameData,o.VRDisplay=s.VRDisplay;var l=Object.freeze({default:o}),c=l&&o||l;return void 0!==Be&&Be.window&&(Be.document||(Be.document=Be.window.document),Be.navigator||(Be.navigator=Be.window.navigator)),c});