s.position.copy(re.DEFAULT_UP),this.updateMatrix(),this.groundColor=new Mt(e)}copy(t,e){return super.copy(t,e),this.groundColor.copy(t.groundColor),this}toJSON(t){let e=super.toJSON(t);return e.object.groundColor=this.groundColor.getHex(),e}},$c=new Wt,uf=new C,df=new C,Fs=class{constructor(t){this.camera=t,this.intensity=1,this.bias=0,this.biasNode=null,this.normalBias=0,this.radius=1,this.blurSamples=8,this.mapSize=new nt(512,512),this.mapType=rn,this.map=null,this.mapPass=null,this.matrix=new Wt,this.autoUpdate=!0,this.needsUpdate=!1,this._frustum=new Qn,this._frameExtents=new nt(1,1),this._viewportCount=1,this._viewports=[new fe(0,0,1,1)]}getViewportCount(){return this._viewportCount}getCamera(){return this.camera}getFrustum(){return this._frustum}updateMatrices(t){let e=this.camera;uf.setFromMatrixPosition(t.matrixWorld),e.position.copy(uf),df.setFromMatrixPosition(t.target.matrixWorld),e.lookAt(df),e.updateMatrixWorld(),this._updateMatrix(e,this.matrix,this._frustum)}_updateMatrix(t,e,n,i){$c.multiplyMatrices(t.projectionMatrix,t.matrixWorldInverse),n.setFromProjectionMatrix($c,t.coordinateSystem,t.reversedDepth);let r=this._frameExtents,a=i?i.z/r.x:1,o=i?i.w/r.y:1,l=i?i.x/r.x:0,c=i?i.y/r.y:0;t.coordinateSystem===zi||t.reversedDepth?e.set(.5*a,0,0,.5*a+l,0,.5*o,0,.5*o+c,0,0,1,0,0,0,0,1):e.set(.5*a,0,0,.5*a+l,0,.5*o,0,.5*o+c,0,0,.5,.5,0,0,0,1),e.multiply($c)}getViewport(t){return this._viewports[t]}getFrameExtents(){return this._frameExtents}dispose(){this.map&&this.map.dispose(),this.mapPass&&this.mapPass.dispose()}copy(t){return this.camera=t.camera.clone(),this.intensity=t.intensity,this.bias=t.bias,this.radius=t.radius,this.autoUpdate=t.autoUpdate,this.needsUpdate=t.needsUpdate,this.normalBias=t.normalBias,this.blurSamples=t.blurSamples,this.mapSize.copy(t.mapSize),this.biasNode=t.biasNode,this}clone(){return new this.constructor().copy(this)}toJSON(){let t={};return t.intensity=this.intensity,t.bias=this.bias,t.normalBias=this.normalBias,t.radius=this.radius,t.blurSamples=this.blurSamples,t.mapSize=this.mapSize.toArray(),t.camera=this.camera.toJSON(!1).object,delete t.camera.matrix,t}},qa=new C,Ya=new Fe,In=new C,Os=class extends re{constructor(){super(),this.isCamera=!0,this.type="Camera",this.matrixWorldInverse=new Wt,this.projectionMatrix=new Wt,this.projectionMatrixInverse=new Wt,this.coordinateSystem=ln,this._reversedDepth=!1}get reversedDepth(){return this._reversedDepth}copy(t,e){return super.copy(t,e),this.matrixWorldInverse.copy(t.matrixWorldInverse),this.projectionMatrix.copy(t.projectionMatrix),this.projectionMatrixInverse.copy(t.projectionMatrixInverse),this.coordinateSystem=t.coordinateSystem,this}getWorldDirection(t){return super.getWorldDirection(t).negate()}updateMatrixWorld(t){super.updateMatrixWorld(t),this.matrixWorld.decompose(qa,Ya,In),In.x===1&&In.y===1&&In.z===1?this.matrixWorldInverse.copy(this.matrixWorld).invert():this.matrixWorldInverse.compose(qa,Ya,In.set(1,1,1)).invert()}updateWorldMatrix(t,e,n=!1){super.updateWorldMatrix(t,e,n),this.matrixWorld.decompose(qa,Ya,In),In.x===1&&In.y===1&&In.z===1?this.matrixWorldInverse.copy(this.matrixWorld).invert():this.matrixWorldInverse.compose(qa,Ya,In.set(1,1,1)).invert()}clone(){return new this.constructor().copy(this)}},hi=new C,ff=new nt,pf=new nt,Re=class extends Os{constructor(t=50,e=1,n=.1,i=2e3){super(),this.isPerspectiveCamera=!0,this.type="PerspectiveCamera",this.fov=t,this.zoom=1,this.near=n,this.far=i,this.focus=10,this.aspect=e,this.view=null,this.filmGauge=35,this.filmOffset=0,this.updateProjectionMatrix()}copy(t,e){return super.copy(t,e),this.fov=t.fov,this.zoom=t.zoom,this.near=t.near,this.far=t.far,this.focus=t.focus,this.aspect=t.aspect,this.view=t.view===null?null:Object.assign({},t.view),this.filmGauge=t.filmGauge,this.filmOffset=t.filmOffset,this}setFocalLength(t){let e=.5*this.getFilmHeight()/t;this.fov=Vi*2*Math.atan(e),this.updateProjectionMatrix()}getFocalLength(){let t=Math.tan(Bi*.5*this.fov);return .5*this.getFilmHeight()/t}getEffectiveFOV(){return Vi*2*Math.atan(Math.tan(Bi*.5*this.fov)/this.zoom)}getFilmWidth(){return this.filmGauge*Math.min(this.aspect,1)}getFilmHeight(){return this.filmGauge/Math.max(this.aspect,1)}getViewBounds(t,e,n){hi.set(-1,-1,.5).applyMatrix4(this.projectionMatrixInverse),e.set(hi.x,hi.y).multiplyScalar(-t/hi.z),hi.set(1,1,.5).applyMatrix4(this.projectionMatrixInverse),n.set(hi.x,hi.y).multiplyScalar(-t/hi.z)}getViewSize(t,e){return this.getViewBounds(t,ff,pf),e.subVectors(pf,ff)}setViewOffset(t,e,n,i,r,a){this.aspect=t/e,this.view===null&&(this.view={enabled:!0,fullWidth:1,fullHeight:1,offsetX:0,offsetY:0,width:1,height:1}),this.view.enabled=!0,this.view.fullWidth=t,this.view.fullHeight=e,this.view.offsetX=n,this.view.offsetY=i,this.view.width=r,this.view.height=a,this.updateProjectionMatrix()}clearViewOffset(){this.view!==null&&(this.view.enabled=!1),this.updateProjectionMatrix()}updateProjectionMatrix(){let t=this.near,e=t*Math.tan(Bi*.5*this.fov)