ear;break;case co:t=this.InterpolantFactoryMethodSmooth;break;case Jc:t=this.InterpolantFactoryMethodBezier;break}if(t===void 0){let n="unsupported interpolation for "+this.ValueTypeName+" keyframe track named "+this.name;if(this.createInterpolant===void 0)if(e!==this.DefaultInterpolation)this.setInterpolation(this.DefaultInterpolation);else throw new Error(n);return Be("KeyframeTrack:",n),this}return this.createInterpolant=t,this}getInterpolation(){switch(this.createInterpolant){case this.InterpolantFactoryMethodDiscrete:return Nr;case this.InterpolantFactoryMethodLinear:return yo;case this.InterpolantFactoryMethodSmooth:return co;case this.InterpolantFactoryMethodBezier:return Jc}}getValueSize(){return this.values.length/this.times.length}shift(e){if(e!==0){let t=this.times;for(let n=0,s=t.length;n!==s;++n)t[n]+=e}return this}scale(e){if(e!==1){let t=this.times;for(let n=0,s=t.length;n!==s;++n)t[n]*=e;Yc(this.settings)&&(ad(this.settings.inTangents,e),ad(this.settings.outTangents,e))}return this}trim(e,t){let n=this.times,s=n.length,r=0,a=s-1;for(;r!==s&&n[r]t;)--a;if(++a,r!==0||a!==s){r>=a&&(a=Math.max(a,1),r=a-1);let o=this.getValueSize();this.times=n.slice(r,a),this.values=this.values.slice(r*o,a*o)}return this}validate(){let e=!0,t=this.getValueSize();t-Math.floor(t)!==0&&(ke("KeyframeTrack: Invalid value size in track.",this),e=!1);let n=this.times,s=this.values,r=n.length;r===0&&(ke("KeyframeTrack: Track is empty.",this),e=!1);let a=null;for(let o=0;o!==r;o++){let l=n[o];if(typeof l=="number"&&isNaN(l)){ke("KeyframeTrack: Time is not a valid number.",this,o,l),e=!1;break}if(a!==null&&a>l){ke("KeyframeTrack: Out of order keys.",this,o,l,a),e=!1;break}a=l}if(s!==void 0&&Ep(s))for(let o=0,l=s.length;o!==l;++o){let c=s[o];if(isNaN(c)){ke("KeyframeTrack: Value is not a valid number.",this,o,c),e=!1;break}}return e}optimize(){let e=this.times.slice(),t=this.values.slice(),n=this.getValueSize(),s=this.getInterpolation()===co,r=e.length-1,a=1;for(let o=1;o0){e[a]=e[r];for(let o=r*n,l=a*n,c=0;c!==n;++c)t[l+c]=t[o+c];++a}return a!==e.length?(this.times=e.slice(0,a),this.values=t.slice(0,a*n)):(this.times=e,this.values=t),this}clone(){let e=this.times.slice(),t=this.values.slice(),n=this.constructor,s=new n(this.name,e,t);return s.createInterpolant=this.createInterpolant,Yc(this.settings)&&(s.settings={inTangents:this.settings.inTangents.slice(),outTangents:this.settings.outTangents.slice()}),s}};function ad(i,e){for(let t=0,n=i.length;t!==n;t+=2)i[t]*=e}wn.prototype.ValueTypeName="";wn.prototype.TimeBufferType=Float32Array;wn.prototype.ValueBufferType=Float32Array;wn.prototype.DefaultInterpolation=yo;var Hi=class extends wn{constructor(e,t,n){super(e,t,n)}};Hi.prototype.ValueTypeName="bool";Hi.prototype.ValueBufferType=Array;Hi.prototype.DefaultInterpolation=Nr;Hi.prototype.InterpolantFactoryMethodLinear=void 0;Hi.prototype.InterpolantFactoryMethodSmooth=void 0;var Wo=class extends wn{constructor(e,t,n,s){super(e,t,n,s)}};Wo.prototype.ValueTypeName="color";var Xo=class extends wn{constructor(e,t,n,s){super(e,t,n,s)}};Xo.prototype.ValueTypeName="number";var qo=class extends zi{constructor(e,t,n,s){super(e,t,n,s)}interpolate_(e,t,n,s){let r=this.resultBuffer,a=this.sampleValues,o=this.valueSize,l=(n-t)/(s-t),c=e*o;for(let h=c+o;c!==h;c+=4)fn.slerpFlat(r,0,a,c-o,a,c,l);return r}},la=class extends wn{constructor(e,t,n,s){super(e,t,n,s)}InterpolantFactoryMethodLinear(e){return new qo(this.times,this.values,this.getValueSize(),e)}};la.prototype.ValueTypeName="quaternion";la.prototype.InterpolantFactoryMethodSmooth=void 0;var ki=class extends wn{constructor(e,t,n){super(e,t,n)}};ki.prototype.ValueTypeName="string";ki.prototype.ValueBufferType=Array;ki.prototype.DefaultInterpolation=Nr;ki.prototype.InterpolantFactoryMethodLinear=void 0;ki.prototype.InterpolantFactoryMethodSmooth=void 0;var Yo=class extends wn{constructor(e,t,n,s){super(e,t,n,s)}};Yo.prototype.ValueTypeName="vector";var Zo=class{constructor(e,t,n){let s=this,r=!1,a=0,o=0,l,c=[];this.onStart=void 0,this.onLoad=e,this.onProgress=t,this.onError=n,this._abortController=null,this.itemStart=function(h){o++,r===!1&&s.onStart!==void 0&&s.onStart(h,a,o),r=!0},this.itemEnd=function(h){a++,s.onProgress!==void 0&&s.onProgress(h,a,o),a===o&&(r=!1,s.onLoad!==void 0&&s.onLoad())},this.itemError=function(h){s.onError!==void 0&&s.onError(h)},this.resolveURL=function(h){return h=h.normalize("NFC"),l?l(h):h},this.setURLModifier=function(h){return l=h,this},this.addHandler=function(h,f){return c.push(h,f),this},this.removeHandler=function(h){let f=c.indexOf(h);return f!==-1&&c.splice(f,2),this},this.getHandler=function(h){for(let f=0,u=c.length;f