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sI="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SA extends i.RawShaderMaterial{get#A(){return this.uniforms.S.value}set#A(A){this.#A&&this.#A.dispose(),this.uniforms.S.value=A,this.uniformsNeedUpdate=!0}get#I(){return this.uniforms.x.value}set#I(A){this.#I&&this.#I.dispose(),this.uniforms.x.value=A,this.uniformsNeedUpdate=!0}get#g(){return this.uniforms.y.value}set#g(A){this.#g&&this.#g.dispose(),this.uniforms.y.value=A,this.uniformsNeedUpdate=!0}set basisViewport(A){this.uniforms.w.value.set(2/A.x,2/A.y),this.uniformsNeedUpdate=!0}set cameraNear(A){this.uniforms.z.value=A,this.uniformsNeedUpdate=!0}get cameraNear(){return this.uniforms.z.value}set cameraPosition(A){this.uniforms.f.value.copy(A),this.uniformsNeedUpdate=!0}get cameraPosition(){return this.uniforms.f.value}set dynamicMode(A){if(this.dynamicMode!==A){if(A){const I=[];for(let g=0;g<hA.MaxScenes;g++)I.push(new i.Matrix4);this.uniforms.m={value:I},this.defines.DM=1}else delete this.defines.DM;this.needsUpdate=!0}}get dynamicMode(){return this.defines.DM===1}set focalLength(A){this.uniforms.t.value.copy(A),this.uniformsNeedUpdate=!0}set fog(A){this.fog!==A&&(A?this.defines.USE_FOG=1:delete this.defines.USE_FOG,this.needsUpdate=!0)}get fog(){return this.defines.USE_FOG===1}set fogExp2(A){this.fogExp2!==A&&(A?this.defines.FOG_EXP2=1:delete this.defines.FOG_EXP2,this.needsUpdate=!0)}get fogExp2(){return this.defines.FOG_EXP2===1}set halfPrecisionPositions(A){this.halfPrecisionPositions!==A&&(A?this.defines.PHF=1:delete this.defines.PHF,this.needsUpdate=!0)}get halfPrecisionPositions(){return this.defines.PHF===1}get nativeAntialiasing(){return this.defines.NAA===1}set nativeAntialiasing(A){this.nativeAntialiasing!==A&&(A?this.defines.NAA=1:delete this.defines.NAA,this.needsUpdate=!0)}set useStates(A){this.useStates!==A&&(A?this.defines.ST=1:(this.#I!==void 0&&(this.#I.dispose(),this.#I=void 0),delete this.defines.ST),this.needsUpdate=!0)}get useStates(){return this.defines.ST===1}get stateBuffer(){return this.#I?.image.data}constructor(){const{uniforms:A,defines:I}=SA.#C();super({uniforms:A,defines:I,vertexShader:atob(aI.code),fragmentShader:atob(HI.code),transparent:!0,alphaTest:1,blending:i.NormalBlending,depthTest:!0,depthWrite:!1,side:i.FrontSide,glslVersion:i.GLSL3}),this.needsUpdate=!1}setTransform(A,I){const g=this.uniforms.m;g&&(g.value[I].copy(A),this.uniformsNeedUpdate=!0)}dispose(){super.dispose(),this.disposeTextures()}disposeTextures(){this.#A&&(this.#A.dispose(),this.#A=void 0),this.#I&&(this.#I.dispose(),this.#I=void 0),this.#g&&(this.#g.dispose(),this.#g=void 0)}buildTextures(A){this.disposeTextures();const I=1,g=1,Q=1,E=3,D=3,w=.5,o=4,G=E+Q+D+w;let k=A.getGaussianCount();const h=this.defines.DM===1,t=this.defines.ST===1,K=this.defines.PHF===1,L=new Uint32Array(k*D),Y=new(K?Uint16Array:Uint32Array)(k*E),p=new Uint32Array(k*Q);this.#Q(A,L,Y,p);const U=this.computeTextureInfo(k,o,G),a=new Uint32Array(U.dataLength),n=K?(F,M)=>{a[F]=Y[M]|Y[M+1]<<16,a[F+1]=Y[M+2]}:(F,M)=>{a[F]=Y[M],a[F+1]=Y[M+1],a[F+2]=Y[M+2]};for(let F=0;F<k;F++){const M=F*8,N=F*3;n(M,N),a[M+4]=L[N],a[M+5]=L[N+1],a[M+6]=L[N+2],a[M+7]=p[F]}const H=new i.DataTexture(a,U.width,U.height,i.RGBAIntegerFormat,i.UnsignedIntType,i.UVMapping,i.ClampToEdgeWrapping,i.ClampToEdgeWrapping,i.NearestFilter,i.NearestFilter,0);if(H.internalFormat="RGBA32UI",H.needsUpdate=!0,this.#A=H,t){const F=this.computeTextureInfo(k,1,1),M=new Uint8Array(F.dataLength),N=new i.DataTexture(M,F.width,F.height,i.RedIntegerFormat,i.UnsignedByteType,i.UVMapping,i.ClampToEdgeWrapping,i.ClampToEdgeWrapping,i.NearestFilter,i.NearestFilter,0);N.needsUpdate=!0,this.#I=N;const x=Math.floor(F.width/F.texelsPerSplat)-1,y=Math.floor(Math.log2(F.width/F.texelsPerSplat));(this.defines.STWOTPS!==x||this.defines.SETWOTPS!==y)&&(this.defines.STWOTPS=x,this.defines.SETWOTPS=y,this.needsUpdate=!0)}if(h){const F=this.computeTextureInfo(k,I,g),M=new Uint32Array(F.width*F.height*I);let N=0,x=0;for(let R=0;R<A.numClouds();++R){const YA=A.getCloudAt(R),fA=YA.buffer.getGaussianCount();for(let NA=x;NA<fA;++NA)M[NA]=N;++N,x+=YA.globalSplatOffset}const y=new i.DataTexture(M,F.width,F.height,i.RedIntegerFormat,i.UnsignedIntType,i.UVMapping,i.ClampToEdgeWrapping,i.ClampToEdgeWrapping,i.NearestFilter,i.NearestFilter,0);y.internalFormat="R32UI",y.needsUpdate=!0,this.#g=y}const J=Math.floor(U.width/U.texelsPerSplat)-1,W=Math.floor(Math.log2(U.width/U.texelsPerSplat));(this.defines.TWOTPS!==J||this.defines.ETWOTPS!==W||this.defines.TPS!==U.texelsPerSplat)&&(this.defines.TWOTPS=J,this.defines.ETWOTPS=W,this.defines.TPS=U.texelsPerSplat,this.needsUpdate=!0)}computeTextureInfo(A,I,g){const E=Math.ceil(g/I),D=E*I,w=A*E,o=A*D;let G=1;for(;G*G<w;)G*=2;G>8192&&(G=8192,console.warn("Maximum splats count reached. Limiting to %s splats.",A));const k=Math.max(Math.ceil(o/G/I),1);return{width:G,height:k,dataLength:G*k*I,texelsPerSplat:E,paddedElementsPerSplat:D}}invalidateState(){this.#I&&(this.#I.needsUpdate=!0,this.needsUpdate=!0)}fillSHIndices(A){const I=new Uint32Array(this.#A.image.data.buffer),g=A.length;for(let Q=0;Q<g;++Q)I[Q*8+3]|=A[Q]<<16;this.#A.needsUpdate=!0}#Q(A,I,g,Q){for(let E=0;E<A.numClouds();++E){const D=A.getCloudAt(E);I&&D.fillPendingCovariancesData(I),g&&D.fillPendingPositionsData(g),Q&&D.fillPendingColorsData(Q)}}static#C(){const A=mA.merge([{S:{value:null},R:{value:null},x:{value:null},y:{value:null},t:{value:new i.Vector2},w:{value:new i.Vector2},z:{value:.1},f:{value:new i.Vector3}},zA.fog]),I={MAX_SCENES:hA.MaxScenes,TWOTPS:1,ETWOTPS:1,TPS:1};return{uniforms:A,defines:I}}}const aI=cI,HI=KI,qI={type:"change"};class gA extends i.EventDispatcher{_uniforms;get uniforms(){return this._uniforms}_defines;get defines(){return this._defines}constructor(){super(),this._uniforms=[],this._defines=[]}dispose(){}init(A){}update(A,I){}dispatchChange(){this.dispatchEvent(qI)}}var V=(C=>(C.IDLE="idle",C.PLAYING="playing",C.COMPLETED="completed",C))(V||{});class QA extends gA{disposeOnComplete=!0;#A=V.IDLE;get state(){return this.#A}play(){this.#A==V.IDLE&&this.setState(V.PLAYING)}stop(){this.#A==V.PLAYING&&this.setState(V.IDLE)}setState(A){this.#A=A,this.dispatchEvent({type:"stateChanged",state:A})}}const dI={type:"refresh"};class oA extends i.Mesh{isGaussianSplattingGroup=!0;boundingBox=null;gaussianState;#A;#I=!1;#g;#Q;#C;#B;#E;#D;set fx(A){A instanceof gA&&(A=[A]),this.#G(this.#D,A),this.#D=A}get fx(){return this.#D}constructor(A){super(oA.#i(0),new SA),this.type="GaussianSplattingGroup",this.#C=(A?.useSharedMemory??!0)&&crossOriginIsolated,this.#Q=A?.dynamicMode??!1,this.#B=A?.useStates??!1,this.#A=new YI(this.#Q,this.#C),this.#A.addEventListener(JA.INIT,this.#J.bind(this)),this.#A.addEventListener(JA.READY,this.#S.bind(this)),this.frustumCulled=!1,this.#E=new i.Matrix4,this.#g=()=>{this.#o()}}add(...A){let I=0;if(this.children.length>0){const Q=this.children[this.children.length-1];I=Q.globalSplatOffset+Q.buffer.getGaussianCount()}const g=this.children.length;for(const Q of A)Q.isGaussianCloud&&(Q.globalSplatOffset=I,I+=Q.buffer.getGaussianCount(),super.add(Q));return g!==this.children.length&&(this.#I=!0),this}remove(...A){const I=this.children.length;for(const g of A)g.isGaussianCloud&&super.remove(g);return I!==this.children.length&&(this.#I=!0),this}removeCloudAt(A){if(A<0||A>=this.children.length)throw new Error("SplatMesh::getScene() -> Invalid scene index.");return this.remove(this.getCloudAt(A)),this.#I=!0,this}getCloudAt(A){if(A<0||A>=this.children.length)throw new Error("SplatMesh::getScene() -> Invalid scene index.");return this.children[A]}numClouds(){return this.children.length}getGaussianCount(){return this.children.reduce((A,I)=>A+I.buffer.getGaussianCount(),0)}computeBoundingBox(){this.boundingBox===null?this.boundingBox=new i.Box3:this.boundingBox.makeEmpty();for(const A of this.children){const I=A;I.boundingBox===null&&I.computeBoundingBox();const g=I.boundingBox.applyMatrix4(I.matrix);this.boundingBox.union(g)}}raycast(A,I){}updateMatrix(){super.updateMatrix(),this.#R()}static#i(A){const I=new i.InstancedBufferGeometry;I.setIndex([0,1,2,0,2,3]);const g=new i.BufferAttribute(new Float32Array([-2,-2,2,-2,2,2,2,2,-2,2,-2,-2]),3);I.setAttribute("position",g),I.boundingSphere=new i.Sphere(new i.Vector3,1),g.needsUpdate=!0;const Q=new Int32Array(A),E=new i.InstancedBufferAttribute(Q,1,!1);return E.setUsage(i.DynamicDrawUsage),E.gpuType=i.IntType,I.setAttribute("v",E),I.instanceCount=0,I}#w(){const A=this.getGaussianCount();this.geometry=oA.#i(A),this.material.dynamicMode=this.#Q,this.material.useStates=this.#B,this.material.halfPrecisionPositions=EA(),this.material.buildTextures(this),this.gaussianState=this.material.stateBuffer,this.fx&&this.#G(void 0,this.fx),this.#A.init(A)}#G(A,I){A=A??[],I=I??[];const g=A.filter(E=>!I.includes(E)),Q=I.filter(E=>!A.includes(E));if(this.material&&(Q.length>0||g.length>0)){for(const E of g){if(E.uniforms)for(const D of E.uniforms)delete this.material.uniforms[D];if(E.defines)for(const D of E.defines)delete this.material.defines[D];E.removeEventListener("change",this.#g),E instanceof QA&&E.removeEventListener("stateChanged",this.#g)}for(const E of Q)E.init(this.material),E.addEventListener("change",this.#g),E instanceof QA&&E.addEventListener("stateChanged",this.#g);this.material.needsUpdate=!0}}#o(){this.dispatchEvent(dI)}dispose(){this.#N(),this.#A.dispose(),this.#I=!0}invalidateState(){this.#B&&(this.material.invalidateState(),this.#o())}#N(){this.geometry.dispose(),this.material&&this.material.dispose()}#F(A,I){const g=this.geometry,Q=g.attributes.v;Q.set(A,0),Q.addUpdateRange(0,A.length),Q.needsUpdate=!0,g.instanceCount=I}#R(){const A=this.material;let I=!1;for(let g=0;g<this.children.length;g++){const Q=this.children[g];Q.matrixNeedsUpdate&&(Q.updateMatrix(),this.#Q&&A.setTransform(Q.matrix,g),I=!0)}I&&this.boundingBox!==null&&this.computeBoundingBox()}#k=(()=>{const A=new i.Vector2,I=new i.Vector2,g=new i.Vector2;return(Q,E)=>{Q.getSize(I);let D=Q.getPixelRatio();if(Q.xr.isPresenting&&(D*=window.devicePixelRatio/D),I.multiplyScalar(D),g.set(E.projectionMatrix.elements[0]*I.x*.5,E.projectionMatrix.elements[5]*I.y*.5),!g.equals(A)||this.#I){E instanceof i.PerspectiveCamera&&(E.aspect=I.x/I.y,E.updateProjectionMatrix()),A.copy(g);const w=this.material;w.basisViewport=I,w.focalLength=g}}})();#U=(()=>{let A=new i.Vector3;return I=>{const g=this.material;this.#E.copy(this.matrixWorld).invert().multiply(I.matrixWorld),A.setFromMatrixPosition(this.#E),(!A.equals(g.cameraPosition)||this.#I)&&(g.cameraPosition=A),I instanceof i.PerspectiveCamera&&(I.near!=g.cameraNear||this.#I)&&(g.cameraNear=I.near)}})();#M(A){if(this.fx)for(let I=this.fx.length-1;I>=0;--I){const g=this.fx[I];if(g instanceof QA&&g.state===V.COMPLETED&&g.disposeOnComplete){g.dispose();const Q=this.fx.concat();Q.splice(I,1),this.fx=Q}g.update(this,A)}}#y(A){const I=this.material;I.fog=A.fog!==null,I.fogExp2=A.fog!==null&&A.fog.isFogExp2}#h(){const A=EA()?Uint16Array:Float32Array,I=new A(this.getGaussianCount()*3);let g=0;for(const Q of this.children){const E=Q,D=E.buffer.getGaussianCount()*3,w=new A(r().buffer,E.buffer.getPositionsBufferPtr(),D);I.set(w,g),g+=D}return I}#J(A){this.#A.addPositions(this.#h(),0,EA()),this.computeBoundingBox(),this.#A.setBounds(this.boundingBox.min,this.boundingBox.max),this.#o()}#S(A){const I=A.data;this.#F(I.indices,I.renderCount),this.#o()}onBeforeRender(A,I,g){this.#I&&(this.dispose(),this.numClouds()>0&&this.#w()),this.children.length!==0&&(this.#U(g),this.#k(A,g),this.#M(g),this.#y(I),this.#A.update(this.#E),this.#I=!1)}}const nA=new i.Matrix4,wA=new i.Ray;class jA extends i.Object3D{isGaussianCloud=!0;buffer;centerRadiusStep;centerRadiusList;sceneCenter;globalSplatOffset=0;matrixNeedsUpdate=!0;boundingBox=null;#A=0;#I=0;#g=0;get gaussianState(){const A=this.parent;if(A&&A.gaussianState)return new Uint8Array(A.gaussianState.buffer,this.globalSplatOffset,this.buffer.getGaussianCount())}get metadata(){return JSON.parse(this.buffer.getMetadata())}constructor(A){super(),this.buffer=A,this.frustumCulled=!1,this.type="GaussianCloud",this.centerRadiusList=A.getCenterRadiusList(),this.centerRadiusStep=A.getCenterRadiusStep();const I=A.getSceneCenter();this.sceneCenter=new i.Vector3(I[0],I[1],I[2])}dispose(){this.buffer&&this.buffer.free()}computeBoundingBox(){this.boundingBox===null?this.boundingBox=new i.Box3:this.boundingBox.makeEmpty();let A=this.buffer.getBoundsMin(),I=this.buffer.getBoundsMax();this.boundingBox.set(new i.Vector3(A[0],A[1],A[2]),new i.Vector3(I[0],I[1],I[2]))}raycast(A,I){if(nA.copy(this.matrixWorld).invert(),wA.copy(A.ray).applyMatrix4(nA),this.boundingBox===null&&this.computeBoundingBox(),!wA.intersectsBox(this.boundingBox))return;const g=this.buffer.raycast(wA.origin,wA.direction,!1,A.firstHitOnly??!1);for(const Q of g)Q.distance>=A.near&&Q.distance<=A.far&&I.push({distance:Q.distance,point:new i.Vector3().set(Q.point.x,Q.point.y,Q.point.z).applyMatrix4(this.matrixWorld),object:this,instanceId:Q.index}),Q.point.free(),Q.free()}updateMatrix(){this.matrixNeedsUpdate&&(super.updateMatrix(),this.matrixNeedsUpdate=!1)}fillPendingPositionsData(A){const I=this.buffer.getLoadedPositionsCount();this.#Q(A,lA()/A.BYTES_PER_ELEMENT,this.#A,I,this.buffer.getPositionsBufferPtr()),this.#A=I}fillPendingColorsData(A){const I=this.buffer.getLoadedColorsCount();this.#Q(A,TA()/A.BYTES_PER_ELEMENT,this.#I,I,this.buffer.getColorsBufferPtr()),this.#I=I}fillPendingCovariancesData(A){const I=this.buffer.getLoadedCovariancesCount();this.#Q(A,ZA()/A.BYTES_PER_ELEMENT,this.#g,I,this.buffer.getCovariancesBufferPtr()),this.#g=I}#Q(A,I,g,Q,E){const D=Q-g;if(D>0){let w=Object.getPrototypeOf(A).constructor,o=new w(r().buffer,E+g*I,D*I);A.set(o,(this.globalSplatOffset+g)*I)}}invalidateState(){const A=this.parent;A&&A.invalidateState()}}var rA=(C=>(C[C.NONE=0]="NONE",C[C.SELECTED=1]="SELECTED",C[C.DELETED=2]="DELETED",C[C.HIDDEN=4]="HIDDEN",C[C.HOVERED=8]="HOVERED",C))(rA||{});class O extends i.Loader{static#A=[];static#I=!1;#g;constructor(A){super(A),this.#g=Math.min(navigator.hardwareConcurrency,4)}setWorkerLimit(A){return this.#g=A,this}async load(A,I,g,Q){if(O.#I){O.#A.push({url:A,onLoad:I,onProgress:g,onError:Q,loader:this});return}O.#I=!0,await bA(this.#g),WA(A,(E,D)=>{g&&g(new ProgressEvent("progress",{loaded:E,total:D}))}).then(E=>{O.#I=!1;let D=new jA(E);this.#Q(),I(D)}).catch(E=>{O.#I=!1,this.#Q(),Q&&Q(E)})}#Q(){if(O.#A.length>0){let A=O.#A.shift();A.loader.load(A.url,A.onLoad,A.onProgress,A.onError)}}}class tI extends gA{#A=.3;#I=!1;get value(){return this.#A}set value(A){A=Math.max(0,Math.min(1,A)),this.#A!=A&&(this.#A=A,this.#g=!0,this.dispatchChange())}get native(){return this.#I}set native(A){this.#I!=A&&(this.#I=A,this.#g=!0,this.dispatchChange())}#g=!0;constructor(){super(),this._uniforms.push("u"),this._defines.push("COVAA","NAA"),this.#Q()}#Q(){const A=new X;A.isActive()?(A.ui?.add(this,"value",0,1,.01).name("Antialias"),A.ui?.add(this,"native",!1).name("Native Antialias")):A.addEventListener("change",I=>{this.#Q()})}init(A){A.uniforms.u={value:this.#A},A.defines[this._defines[0]]=1}update(A,I){const g=A.material;this.#g&&(this.#I?(g.defines.NAA=1,g.needsUpdate=!0):(g.defines.NAA&&(delete g.defines.NAA,g.needsUpdate=!0),g.uniforms.u.value=this.#A,g.uniformsNeedUpdate=!0),this.#g=!1)}}class VI extends gA{#A=3;get maxDegree(){return this.#A}set maxDegree(A){this.#A!=A&&(this.#A=A,this.#B=!0,this.dispatchChange())}#I;#g;#Q;#C;#B=!0;#E=!1;constructor(){super(),this._uniforms.push("R"),this._defines.push("SH","SH1","SH2","SH3","SHCB16","TWOTPS_SH","TPS_SH","ETWOTPS_SH");for(let A=0;A<15;A++)this._defines.push(`SHL${A}`),this._defines.push(`SHH${A}`);this.#D()}#D(){const A=new X;A.isActive()?A.ui?.add(this,"maxDegree",0,3,1).name("SH degree"):A.addEventListener("change",I=>{this.#D()})}init(A){A.uniforms.R={value:void 0}}dispose(){this.#I&&(this.#I.dispose(),this.#I=void 0),this.#g&&(this.#g.dispose(),this.#g=void 0),this.#Q&&(this.#Q.dispose(),this.#Q=void 0),this.#C&&(this.#C.dispose(),this.#C=void 0)}update(A,I){const g=A.material;if(!this.#I&&!this.#g&&!this.#Q&&!this.#C&&(this.#E=A.children.some(Q=>{if(Q.isGaussianCloud){const E=Q;return E.buffer.getSHCBCount()==0&&E.buffer.getSHDegree()>0}return!1}),this.#E?(this.#G(A),g.uniforms.H={value:this.#g},g.uniforms.A={value:this.#Q},g.uniforms.B={value:this.#C},this.#B=!0):(this.#w(A),this.#i(A),g.uniforms.R={value:this.#I}),g.uniformsNeedUpdate=!0),this.#B){for(const Q of this._defines)delete g.defines[Q];if(this.#A>0){g.defines.SH=1,this.#E||(g.defines.SHCB16=1);for(let Q=0;Q<this.#A;Q++)g.defines[`SH${Q+1}`]=1}if(this.#E){const Q=this.#g.image.width,E=Q-1,D=Math.floor(Math.log2(Q));g.defines.TWOTPS_SH=E,g.defines.ETWOTPS_SH=D}g.needsUpdate=!0,this.#B=!1}}#i(A){const I=A.getGaussianCount();let g=0;const Q=new Uint16Array(I);for(let D=0,w=A.numClouds();D<w;++D){const o=A.getCloudAt(D),G=o.buffer.getGaussianCount(),k=new Uint16Array(r().buffer,o.buffer.getShCoeffsIndicesBufferPtr(),G);Q.set(k,g),g+=G}A.material.fillSHIndices(Q)}#w(A){let D=0;for(let h=0,t=A.numClouds();h<t;++h){const K=A.getCloudAt(h);D+=K.buffer.getSHCBCount()}const w=1024/4,o=new i.Vector2(1024,Math.max(Math.ceil(D/w)*4,1)),G=new Uint16Array(o.x*o.y*3);let k=0;for(let h=0,t=A.numClouds();h<t;++h){const K=A.getCloudAt(h),L=K.buffer.getSHCBCount(),Y=new Uint16Array(r().buffer,K.buffer.getShCoeffsCBBufferPtr(),L*45);for(let p=0;p<L;++p){const U=p+k,a=U%w,n=Math.floor(U/w);let H=U*45;for(let J=0;J<4;++J){const W=(n*4+J)*1024*3;for(let F=0;F<4;++F){const M=(a*4+F)*3,N=W+M;G[N]=Y[H++],G[N+1]=Y[H++],G[N+2]=Y[H++]}}}k+=L}this.#I=new i.DataTexture(G,o.x,o.y,i.RGBFormat,i.HalfFloatType),this.#I.internalFormat="RGB16F",this.#I.needsUpdate=!0}#G(A){let Q=A.getGaussianCount();const D=A.material.computeTextureInfo(Q,4,15),w=D.dataLength*4,o=new Uint8Array(w),G=new Uint8Array(w),k=new Uint8Array(w),h=Math.floor(.5*255);for(let K=0,L=A.numClouds();K<L;++K){const Y=A.getCloudAt(K),p=Y.buffer.getSHCBCount(),U=Y.buffer.getSHDegree(),n=((U+1)*(U+1)-1)*3,H=Y.buffer.getGaussianCount();if(U<3&&(k.fill(h,0,H*D.paddedElementsPerSplat),U<2&&(G.fill(h,0,H*D.paddedElementsPerSplat),U<1&&o.fill(h,0,H*D.paddedElementsPerSplat))),p==0){const J=new Uint8Array(r().buffer,Y.buffer.getShCoeffsBufferPtr(),H*n),W=U>1?15:12,F=U>2?15:12,M=U==3?15:12;let N=0;for(let x=0;x<H;++x)if(U>=1){const y=x*D.paddedElementsPerSplat;N=x*n;for(let R=0;R<W;R+=4,N+=4)o[y+R]=J[N+3],o[y+R+1]=J[N+2],o[y+R+2]=J[N+1],o[y+R+3]=J[N];if(U>=2){N--;for(let R=0;R<F;R+=4,N+=4)G[y+R]=J[N+3],G[y+R+1]=J[N+2],G[y+R+2]=J[N+1],G[y+R+3]=J[N];if(U==3){N--;for(let R=0;R<M;R+=4,N+=4)k[y+R]=J[N+3],k[y+R+1]=J[N+2],k[y+R+2]=J[N+1],k[y+R+3]=J[N]}else for(let R=F;R<D.paddedElementsPerSplat;++R)G[y+R]=h}else for(let R=W;R<D.paddedElementsPerSplat;++R)o[y+R]=h}}}const t=[o,G,k].map(K=>{const L=new i.DataTexture(new Uint32Array(K.buffer),D.width,D.height,i.RGBAIntegerFormat,i.UnsignedIntType);return L.internalFormat="RGBA32UI",L.needsUpdate=!0,L});this.#g=t[0],this.#Q=t[1],this.#C=t[2]}}class xI extends QA{sparseFadeFactor=.1;denseFadeFactor=.1;denseTimeDelay=3;speedFactor=.25;minimumPointSize=2;#A;#I=0;#g=0;#Q=0;#C=0;#B=0;#E=0;#D=0;#i=0;#w=0;constructor(){super(),this._uniforms.push("D","i","p","n"),this._defines.push("RFIA","RFIA_SS")}dispose(){super.dispose(),this.#A&&(this.#A.stop(),this.#A=void 0)}stop(){this.state==V.PLAYING&&(this.#I=0,this.#g=0,this.#Q=0,this.#C=0,this.#B=0,this.#E=0,this.#D=0,this.#i=0,this.#w=0,this.#A&&(this.#A.stop(),this.#A=void 0)),super.stop()}init(A){A.uniforms.D={value:new i.Vector2},A.uniforms.i={value:new i.Vector2},A.uniforms.p={value:new i.Vector2},A.uniforms.n={value:new i.Vector3},A.defines[this._defines[0]]=1}update(A,I){if(this.state!=V.PLAYING)return;const g=A.getCloudAt(0),Q=g.buffer,E=A.material;this.#A||(this.#A=new i.Clock,this.speedFactor=FA.clamp(this.speedFactor,.01,1),this.sparseFadeFactor=FA.clamp(this.sparseFadeFactor,0,.99),this.denseFadeFactor=FA.clamp(this.denseFadeFactor,0,.99),E.uniforms.n.value.copy(g.sceneCenter.clone()),E.defines[this._defines[1]]!=this.minimumPointSize&&(E.defines[this._defines[1]]=this.minimumPointSize,E.needsUpdate=!0));const D=Q.getMaximumRadius()*1.05;if(this.#I>=.99&&this.#g>=.99&&this.#B>=D&&this.#i>=D){this.#A.stop(),this.#A=void 0,this.setState(V.COMPLETED);return}const w=Math.max(Q.getCurrentRadius(),.001),o=this.#A.getElapsedTime();this.#I=this.#I*.9+w*.1,this.#g=this.#g*.95+w*.05,this.#Q=1/(this.#I-this.#g);let G=Math.max(this.#G(o)*D,.001);this.#C=G*(1+this.sparseFadeFactor),this.#B=G*(1-this.sparseFadeFactor),this.#E=1/(this.#C-this.#B),G=Math.max(this.#G(Math.max(o-this.denseTimeDelay,0))*D,.001),this.#D=G*(1+this.denseFadeFactor),this.#i=G*(1-this.denseFadeFactor),this.#w=1/(this.#D-this.#i),E.uniforms.i.value.set(this.#I,this.#Q),E.uniforms.p.value.set(this.#C,this.#E),E.uniforms.D.value.set(this.#D,this.#w),E.uniformsNeedUpdate=!0,this.dispatchChange()}#G(A){return Math.pow(A*this.speedFactor,2.5)}}new i.Matrix4,new i.Euler(0,0,0,"YXZ"),new i.Quaternion,new i.Vector3;const CA=32,GA=5;class TI{data;size;constructor(A,I=A.length*CA){this.data=A,this.size=I}get(A){if(A<0||A>=this.size)return!1;const I=A>>>GA,g=A&CA-1;return(this.data[I]>>>g&1)!==0}set(A,I){if(A<0||A>=this.size)return;const g=A>>>GA,Q=A&CA-1;I?this.data[g]|=1<<Q:this.data[g]&=~(1<<Q)}has(A){if(A<0||A>=this.size)return!1;const I=A>>>GA,g=A&CA-1;return(this.data[I]&1<<g)!==0}getIndicesArray(){return Array.from(this.indices())}*indices(){for(let A=0,I=this.data.length;A<I;A++){let g=this.data[A]|0;for(;g!==0;){const Q=g&-g,E=CA-1-Math.clz32(Q);yield A<<GA|E,g&=g-1}}}toString(){let A="";for(const I of this.indices()){for(;A.length<I;)A+="0";A+="1"}return A.padEnd(this.size,"0")}}const ZI=new i.Vector3(-1,-1,1),lI="0.1.42";export{QA as AnimationFx,tI as AntialiasingFx,TI as BitArray,gA as Fx,ZI as GLOBAL_SCALE,jA as GaussianCloud,O as GaussianCloudLoader,oA as GaussianSplattingGroup,rA as GaussianState,xI as RadialFadeInAnimationFx,VI as SphericalHarmonicsFx,V as StateFx,lI as version};