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xg extends w.RawShaderMaterial{constructor(){var A;const{uniforms:I,defines:Q}=y(A=xg,sI,jI).call(A);super({uniforms:I,defines:Q,vertexShader:atob(MQ.code),fragmentShader:atob(JQ.code),transparent:!0,alphaTest:1,blending:w.NormalBlending,depthTest:!0,depthWrite:!1,side:w.FrontSide,glslVersion:w.GLSL3}),o(this,J),this.needsUpdate=!1}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 Q=0;Q<wI.MaxScenes;Q++)I.push(new w.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:(B(this,J,P)!==void 0&&(B(this,J,P).dispose(),i(this,J,void 0,uA)),delete this.defines.ST),this.needsUpdate=!0)}get useStates(){return this.defines.ST===1}get stateBuffer(){var A;return(A=B(this,J,P))==null?void 0:A.image.data}setTransform(A,I){this.uniforms.m.value[I].copy(A),this.uniformsNeedUpdate=!0}dispose(){super.dispose(),this.disposeTextures()}disposeTextures(){B(this,J,QA)&&(B(this,J,QA).dispose(),i(this,J,void 0,SI)),B(this,J,P)&&(B(this,J,P).dispose(),i(this,J,void 0,uA)),B(this,J,HA)&&(B(this,J,HA).dispose(),i(this,J,void 0,YI))}buildTextures(A){this.disposeTextures();const I=1,Q=1,C=1,D=3,G=3,N=.5,R=4,k=D+C+G+N;let h=A.getGaussianCount();const l=this.defines.DM===1,d=this.defines.ST===1,K=this.defines.PHF===1,t=new Uint32Array(h*G),T=new(K?Uint16Array:Uint32Array)(h*D),s=new Uint32Array(h*C);y(this,J,PI).call(this,A,t,T,s);const X=this.computeTextureInfo(h,R,k),V=new Uint32Array(X.dataLength),W=K?(M,F)=>{V[M]=T[F]|T[F+1]<<16,V[M+1]=T[F+2]}:(M,F)=>{V[M]=T[F],V[M+1]=T[F+1],V[M+2]=T[F+2]};for(let M=0;M<h;M++){const F=M*8,x=M*3;W(F,x),V[F+4]=t[x],V[F+5]=t[x+1],V[F+6]=t[x+2],V[F+7]=s[M]}const S=new w.DataTexture(V,X.width,X.height,w.RGBAIntegerFormat,w.UnsignedIntType,w.UVMapping,w.ClampToEdgeWrapping,w.ClampToEdgeWrapping,w.NearestFilter,w.NearestFilter,0);if(S.internalFormat="RGBA32UI",S.needsUpdate=!0,i(this,J,S,SI),d){const M=this.computeTextureInfo(h,1,1),F=new Uint8Array(M.dataLength),x=new w.DataTexture(F,M.width,M.height,w.RedIntegerFormat,w.UnsignedByteType,w.UVMapping,w.ClampToEdgeWrapping,w.ClampToEdgeWrapping,w.NearestFilter,w.NearestFilter,0);x.needsUpdate=!0,i(this,J,x,uA);const Y=Math.floor(M.width/M.texelsPerSplat)-1,U=Math.floor(Math.log2(M.width/M.texelsPerSplat));(this.defines.STWOTPS!==Y||this.defines.SETWOTPS!==U)&&(this.defines.STWOTPS=Y,this.defines.SETWOTPS=U,this.needsUpdate=!0)}if(l){const M=this.computeTextureInfo(h,I,Q),F=new Uint32Array(M.width*M.height*I);let x=0,Y=0;for(let UI=0;UI<A.numClouds();++UI){const WI=A.getCloudAt(UI),pg=WI.buffer.getGaussianCount();for(let kI=Y;kI<pg;++kI)F[kI]=x;++x,Y+=WI.globalSplatOffset}const U=new w.DataTexture(F,M.width,M.height,w.RedIntegerFormat,w.UnsignedIntType,w.UVMapping,w.ClampToEdgeWrapping,w.ClampToEdgeWrapping,w.NearestFilter,w.NearestFilter,0);U.internalFormat="R32UI",U.needsUpdate=!0,i(this,J,U,YI)}const gA=Math.floor(X.width/X.texelsPerSplat)-1,r=Math.floor(Math.log2(X.width/X.texelsPerSplat));(this.defines.TWOTPS!==gA||this.defines.ETWOTPS!==r||this.defines.TPS!==X.texelsPerSplat)&&(this.defines.TWOTPS=gA,this.defines.ETWOTPS=r,this.defines.TPS=X.texelsPerSplat,this.needsUpdate=!0)}computeTextureInfo(A,I,Q){const D=Math.ceil(Q/I),G=D*I,N=A*D,R=A*G;let k=1;for(;k*k<N;)k*=2;k>8192&&(k=8192,console.warn("Maximum splats count reached. Limiting to %s splats.",A));const h=Math.max(Math.ceil(R/k/I),1);return{width:k,height:h,dataLength:k*h*I,texelsPerSplat:D,paddedElementsPerSplat:G}}invalidateState(){B(this,J,P)&&(B(this,J,P).needsUpdate=!0,this.needsUpdate=!0)}fillSHIndices(A){const I=new Uint32Array(B(this,J,QA).image.data.buffer),Q=A.length;for(let C=0;C<Q;++C)I[C*8+3]|=A[C]<<16;B(this,J,QA).needsUpdate=!0}};J=new WeakSet,QA=function(){return this.uniforms.S.value},SI=function(g){B(this,J,QA)&&B(this,J,QA).dispose(),this.uniforms.S.value=g,this.uniformsNeedUpdate=!0},P=function(){return this.uniforms.x.value},uA=function(g){B(this,J,P)&&B(this,J,P).dispose(),this.uniforms.x.value=g,this.uniformsNeedUpdate=!0},HA=function(){return this.uniforms.y.value},YI=function(g){B(this,J,HA)&&B(this,J,HA).dispose(),this.uniforms.y.value=g,this.uniformsNeedUpdate=!0},PI=function(g,A,I,Q){for(let C=0;C<g.numClouds();++C){const 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w.Vector2(1024,Math.max(Math.ceil(D/G)*4,1)),R=new Uint16Array(N.x*N.y*3);let k=0;for(let h=0,l=g.numClouds();h<l;++h){const d=g.getCloudAt(h),K=d.buffer.getSHCBCount(),t=new Uint16Array(YA().buffer,d.buffer.getShCoeffsCBBufferPtr(),K*45);for(let T=0;T<K;++T){const s=T+k,X=s%G,V=Math.floor(s/G);let W=s*45;for(let S=0;S<4;++S){const gA=(V*4+S)*1024*3;for(let r=0;r<4;++r){const M=(X*4+r)*3,F=gA+M;R[F]=t[W++],R[F+1]=t[W++],R[F+2]=t[W++]}}}k+=K}i(this,f,new w.DataTexture(R,N.x,N.y,w.RGBFormat,w.HalfFloatType)),B(this,f).internalFormat="RGB16F",B(this,f).needsUpdate=!0},gg=function(g){let Q=g.getGaussianCount();const D=g.material.computeTextureInfo(Q,4,15),G=D.dataLength*4,N=new Uint8Array(G),R=new Uint8Array(G),k=new Uint8Array(G),h=Math.floor(.5*255);for(let d=0,K=g.numClouds();d<K;++d){const t=g.getCloudAt(d),T=t.buffer.getSHCBCount(),s=t.buffer.getSHDegree(),V=((s+1)*(s+1)-1)*3,W=t.buffer.getGaussianCount();if(s<3&&(k.fill(h,0,W*D.paddedElementsPerSplat),s<2&&(R.fill(h,0,W*D.paddedElementsPerSplat),s<1&&N.fill(h,0,W*D.paddedElementsPerSplat))),T==0){const S=new Uint8Array(YA().buffer,t.buffer.getShCoeffsBufferPtr(),W*V),gA=s>1?15:12,r=s>2?15:12,M=s==3?15:12;let F=0;for(let x=0;x<W;++x)if(s>=1){const Y=x*D.paddedElementsPerSplat;F=x*V;for(let U=0;U<gA;U+=4,F+=4)N[Y+U]=S[F+3],N[Y+U+1]=S[F+2],N[Y+U+2]=S[F+1],N[Y+U+3]=S[F];if(s>=2){F--;for(let U=0;U<r;U+=4,F+=4)R[Y+U]=S[F+3],R[Y+U+1]=S[F+2],R[Y+U+2]=S[F+1],R[Y+U+3]=S[F];if(s==3){F--;for(let U=0;U<M;U+=4,F+=4)k[Y+U]=S[F+3],k[Y+U+1]=S[F+2],k[Y+U+2]=S[F+1],k[Y+U+3]=S[F]}else for(let U=r;U<D.paddedElementsPerSplat;++U)R[Y+U]=h}else for(let U=gA;U<D.paddedElementsPerSplat;++U)N[Y+U]=h}}}const l=[N,R,k].map(d=>{const K=new w.DataTexture(new Uint32Array(d.buffer),D.width,D.height,w.RGBAIntegerFormat,w.UnsignedIntType);return K.internalFormat="RGBA32UI",K.needsUpdate=!0,K});i(this,z,l[0]),i(this,_,l[1]),i(this,$,l[2])};class aQ extends fA{constructor(){super(),o(this,BI),c(this,"sparseFadeFactor",.1),c(this,"denseFadeFactor",.1),c(this,"denseTimeDelay",3),c(this,"speedFactor",.25),c(this,"minimumPointSize",2),o(this,p),o(this,AA,0),o(this,iA,0),o(this,pA,0),o(this,JA,0),o(this,hA,0),o(this,ZA,0),o(this,cA,0),o(this,SA,0),o(this,lA,0),this._uniforms.push("D","i","p","n"),this._defines.push("RFIA","RFIA_SS")}dispose(){super.dispose(),B(this,p)&&(B(this,p).stop(),i(this,p,void 0))}stop(){this.state==b.PLAYING&&(i(this,AA,0),i(this,iA,0),i(this,pA,0),i(this,JA,0),i(this,hA,0),i(this,ZA,0),i(this,cA,0),i(this,SA,0),i(this,lA,0),B(this,p)&&(B(this,p).stop(),i(this,p,void 0))),super.stop()}init(A){A.uniforms.D={value:new w.Vector2},A.uniforms.i={value:new w.Vector2},A.uniforms.p={value:new w.Vector2},A.uniforms.n={value:new w.Vector3},A.defines[this._defines[0]]=1}update(A,I){if(this.state!=b.PLAYING)return;const Q=A.getCloudAt(0),C=Q.buffer,D=A.material;B(this,p)||(i(this,p,new w.Clock),this.speedFactor=xI.clamp(this.speedFactor,.01,1),this.sparseFadeFactor=xI.clamp(this.sparseFadeFactor,0,.99),this.denseFadeFactor=xI.clamp(this.denseFadeFactor,0,.99),D.uniforms.n.value.copy(Q.sceneCenter.clone()),D.defines[this._defines[1]]!=this.minimumPointSize&&(D.defines[this._defines[1]]=this.minimumPointSize,D.needsUpdate=!0));const G=C.getMaximumRadius()*1.05;if(B(this,AA)>=.99&&B(this,iA)>=.99&&B(this,hA)>=G&&B(this,SA)>=G){B(this,p).stop(),i(this,p,void 0),this.setState(b.COMPLETED);return}const N=Math.max(C.getCurrentRadius(),.001),R=B(this,p).getElapsedTime();i(this,AA,B(this,AA)*.9+N*.1),i(this,iA,B(this,iA)*.95+N*.05),i(this,pA,1/(B(this,AA)-B(this,iA)));let k=Math.max(y(this,BI,VI).call(this,R)*G,.001);i(this,JA,k*(1+this.sparseFadeFactor)),i(this,hA,k*(1-this.sparseFadeFactor)),i(this,ZA,1/(B(this,JA)-B(this,hA))),k=Math.max(y(this,BI,VI).call(this,Math.max(R-this.denseTimeDelay,0))*G,.001),i(this,cA,k*(1+this.denseFadeFactor)),i(this,SA,k*(1-this.denseFadeFactor)),i(this,lA,1/(B(this,cA)-B(this,SA))),D.uniforms.i.value.set(B(this,AA),B(this,pA)),D.uniforms.p.value.set(B(this,JA),B(this,ZA)),D.uniforms.D.value.set(B(this,cA),B(this,lA)),D.uniformsNeedUpdate=!0,this.dispatchChange()}}p=new WeakMap,AA=new WeakMap,iA=new WeakMap,pA=new WeakMap,JA=new WeakMap,hA=new WeakMap,ZA=new WeakMap,cA=new WeakMap,SA=new WeakMap,lA=new WeakMap,BI=new WeakSet,VI=function(g){return Math.pow(g*this.speedFactor,2.5)},new w.Matrix4,new w.Euler(0,0,0,"YXZ"),new w.Quaternion,new w.Vector3;const KQ="0.1.39";export{fA as AnimationFx,sQ as AntialiasingFx,jA as Fx,tg as GaussianCloud,YQ as GaussianCloudLoader,SQ as GaussianSplattingGroup,Vg as GaussianState,aQ as RadialFadeInAnimationFx,LQ as SphericalHarmonicsFx,b as StateFx,KQ as version};