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sa=b.core.LazySurfaceBoundingBoxTree=function(a,b,c,d){null==b&&(b=!1),this._boundingBox=null,this._surface=a,this._splitV=b,null==c&&(c=Ca.domain(a.knotsU)/16),null==d&&(d=Ca.domain(a.knotsV)/16),this._knotTolU=c,this._knotTolV=d};g["verb.core.LazySurfaceBoundingBoxTree"]=sa,sa.__name__=["verb","core","LazySurfaceBoundingBoxTree"],sa.__interfaces__=[oa],sa.prototype={split:function(){var a,b;this._splitV?(a=P.first(this._surface.knotsV),b=P.last(this._surface.knotsV)):(a=P.first(this._surface.knotsU),b=P.last(this._surface.knotsU));var c=(a+b)/2,d=Ga.surfaceSplit(this._surface,c,this._splitV);return new _(new sa(d[0],!this._splitV,this._knotTolU,this._knotTolV),new sa(d[1],!this._splitV,this._knotTolU,this._knotTolV))},boundingBox:function(){if(null==this._boundingBox){this._boundingBox=new R;for(var a=0,b=this._surface.controlPoints;a<b.length;){var c=b[a];++a,this._boundingBox.addRange(Ia.dehomogenize1d(c))}}return this._boundingBox},yield:function(){return 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Aa=b.core.Deserializer=function(){};g["verb.core.Deserializer"]=Aa,Aa.__name__=["verb","core","Deserializer"],Aa.deserialize=function(a){return new u(a).unserialize()};var Ba=b.core.Trig=function(){};g["verb.core.Trig"]=Ba,Ba.__name__=["verb","core","Trig"],Ba.isPointInPlane=function(a,b,c){return Math.abs(Ca.dot(Ca.sub(a,b.origin),b.normal))<c},Ba.distToSegment=function(a,b,c){var d=Ba.segmentClosestPoint(b,a,c,0,1);return Ca.dist(b,d.pt)},Ba.rayClosestPoint=function(a,b,c){var d=Ca.sub(a,b),e=Ca.dot(d,c);return Ca.add(b,Ca.mul(e,c))},Ba.distToRay=function(a,b,c){var d=Ba.rayClosestPoint(a,b,c),e=Ca.sub(d,a);return Ca.norm(e)},Ba.threePointsAreFlat=function(a,b,c,d){var e=Ca.sub(b,a),f=Ca.sub(c,a),g=Ca.cross(e,f);return Ca.dot(g,g)<d},Ba.segmentClosestPoint=function(a,b,c,d,e){var f=Ca.sub(c,b),g=Ca.norm(f);if(g<S.EPSILON)return{u:d,pt:b};var h=b,i=Ca.mul(1/g,f),j=Ca.sub(a,h),k=Ca.dot(j,i);return k<0?{u:d,pt:b}:k>g?{u:e,pt:c}:{u:d+(e-d)*k/g,pt:Ca.add(h,Ca.mul(k,i))}};var 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c=1/0,d=0,e=Ma.rationalCurveRegularSample(a,a.controlPoints.length*a.degree,!0),f=0,g=e.length-1;f<g;){var h=f++,i=e[h][0],j=e[h+1][0],k=e[h].slice(1),l=e[h+1].slice(1),m=Ba.segmentClosestPoint(b,k,l,i,j),n=Ca.norm(Ca.sub(b,m.pt));n<c&&(c=n,d=m.u)}for(var o,p,q=5,r=0,s=1e-4,t=5e-4,u=a.knots[0],v=P.last(a.knots),w=Ca.normSquared(Ca.sub(a.controlPoints[0],P.last(a.controlPoints)))<S.EPSILON,x=d,y=function(b){return Ia.rationalCurveDerivatives(a,b,2)},z=function(a,b,c){return a-Ca.dot(b[1],c)/(Ca.dot(b[2],c)+Ca.dot(b[1],b[1]))};r<q;){o=y(x),p=Ca.sub(o[0],b);var A=Ca.norm(p),B=Ca.dot(o[1],p),C=Ca.norm(o[1])*A,D=B/C,E=A<s,F=Math.abs(D)<t;if(E&&F)return x;var G=z(x,o,p);G<u?G=w?v-(G-u):u:G>v&&(G=w?u+(G-v):v);if(Ca.norm(Ca.mul(G-x,o[1]))<s)return x;x=G,r++}return x},Da.rationalCurveParamAtArcLength=function(a,b,c,d,e){if(null==c&&(c=.001),b<S.EPSILON)return a.knots[0];var f;f=null!=d?d:La.decomposeCurveIntoBeziers(a);var g,h=0,i=(f[h],-S.EPSILON);for(g=null!=e?e:[];i<b&&h<f.length;){if(h<g.length?g[h]=g[h]:g[h]=Da.rationalBezierCurveArcLength(a),i+=g[h],b<i+S.EPSILON)return Da.rationalBezierCurveParamAtArcLength(a,b,c,g[h]);h++}return-1},Da.rationalBezierCurveParamAtArcLength=function(a,b,c,d){if(b<0)return a.knots[0];var e;if(e=null!=d?d:Da.rationalBezierCurveArcLength(a),b>e)return P.last(a.knots);var f,g=a.knots[0],h=0,i=P.last(a.knots),j=e,k=0,l=0;for(f=null!=c?c:2*S.TOLERANCE;j-h>f;)k=(g+i)/2,l=Da.rationalBezierCurveArcLength(a,k),l>b?(i=k,j=l):(g=k,h=l);return(g+i)/2},Da.rationalCurveArcLength=function(a,b,c){null==c&&(c=16),b=null==b?P.last(a.knots):b;for(var d=La.decomposeCurveIntoBeziers(a),e=0,f=d[0],g=0;e<d.length&&f.knots[0]+S.EPSILON<b;){var h=Math.min(P.last(f.knots),b);g+=Da.rationalBezierCurveArcLength(f,h,c),f=d[++e]}return g},Da.rationalBezierCurveArcLength=function(a,b,c){null==c&&(c=16);var d;d=null==b?P.last(a.knots):b;for(var e,f,g=(d-a.knots[0])/2,h=0,i=a.degree+c,j=0;j<i;){var k=j++;e=g*Da.Tvalues[i][k]+g+a.knots[0],f=Ia.rationalCurveDerivatives(a,e,1),h+=Da.Cvalues[i][k]*Ca.norm(f[1])}return g*h};var Ea=b.eval.KnotMultiplicity=function(a,b){this.knot=a,this.mult=b};g["verb.eval.KnotMultiplicity"]=Ea,Ea.__name__=["verb","eval","KnotMultiplicity"],Ea.prototype={inc:function(){this.mult++},__class__:Ea};var Fa=b.eval.Check=function(){};g["verb.eval.Check"]=Fa,Fa.__name__=["verb","eval","Check"],Fa.isValidKnotVector=function(a,b){if(0==a.length)return!1;if(a.length<2*(b+1))return!1;for(var c=P.first(a),d=0,e=b+1;d<e;){var f=d++;if(Math.abs(a[f]-c)>S.EPSILON)return!1}c=P.last(a);for(var g=a.length-b-1,h=a.length;g<h;){var i=g++;if(Math.abs(a[i]-c)>S.EPSILON)return!1}
return Fa.isNonDecreasing(a)},Fa.isNonDecreasing=function(a){for(var b=P.first(a),c=0,d=a.length;c<d;){var e=c++;if(a[e]<b-S.EPSILON)return!1;b=a[e]}return!0},Fa.isValidNurbsCurveData=function(a){if(null==a.controlPoints)throw new C("Control points array cannot be null!");if(null==a.degree)throw new C("Degree cannot be null!");if(a.degree<1)throw new C("Degree must be greater than 1!");if(null==a.knots)throw new C("Knots cannot be null!");if(a.knots.length!=a.controlPoints.length+a.degree+1)throw new C("controlPoints.length + degree + 1 must equal knots.length!");if(!Fa.isValidKnotVector(a.knots,a.degree))throw new C("Invalid knot vector format!  Should begin with degree + 1 repeats and end with degree + 1 repeats!");return a},Fa.isValidNurbsSurfaceData=function(a){if(null==a.controlPoints)throw new C("Control points array cannot be null!");if(null==a.degreeU)throw new C("DegreeU cannot be null!");if(null==a.degreeV)throw new C("DegreeV cannot be null!");if(a.degreeU<1)throw new C("DegreeU must be greater than 1!");if(a.degreeV<1)throw new C("DegreeV must be greater than 1!");if(null==a.knotsU)throw new C("KnotsU cannot be null!");if(null==a.knotsV)throw new C("KnotsV cannot be null!");if(a.knotsU.length!=a.controlPoints.length+a.degreeU+1)throw new C("controlPointsU.length + degreeU + 1 must equal knotsU.length!");if(a.knotsV.length!=a.controlPoints[0].length+a.degreeV+1)throw new C("controlPointsV.length + degreeV + 1 must equal knotsV.length!");if(!Fa.isValidKnotVector(a.knotsU,a.degreeU)||!Fa.isValidKnotVector(a.knotsV,a.degreeV))throw new C("Invalid knot vector format!  Should begin with degree + 1 repeats and end with degree + 1 repeats!");return a};var Ga=b.eval.Divide=function(){};g["verb.eval.Divide"]=Ga,Ga.__name__=["verb","eval","Divide"],Ga.surfaceSplit=function(a,b,c){null==c&&(c=!1);var d,e,f;c?(f=a.controlPoints,d=a.knotsV,e=a.degreeV):(f=ta.transpose(a.controlPoints),d=a.knotsU,e=a.degreeU);for(var g,h=[],i=0,j=e+1;i<j;){i++;h.push(b)}g=h;for(var k=[],l=[],m=Ia.knotSpan(e,b,d),n=null,o=0;o<f.length;){var p=f[o];++o,n=La.curveKnotRefine(new W(e,d,p),g),k.push(n.controlPoints.slice(0,m+1)),l.push(n.controlPoints.slice(m+1))}var q=n.knots.slice(0,m+e+2),r=n.knots.slice(m+1);return c?[new X(a.degreeU,e,a.knotsU.slice(),q,k),new X(a.degreeU,e,a.knotsU.slice(),r,l)]:(k=ta.transpose(k),l=ta.transpose(l),[new X(e,a.degreeV,q,a.knotsV.slice(),k),new X(e,a.degreeV,r,a.knotsV.slice(),l)])},Ga.curveSplit=function(a,b){for(var c,d=a.degree,e=(a.controlPoints,a.knots),f=[],g=0,h=d+1;g<h;){g++;f.push(b)}c=f;var i=La.curveKnotRefine(a,c),j=Ia.knotSpan(d,b,e),k=i.knots.slice(0,j+d+2),l=i.knots.slice(j+1),m=i.controlPoints.slice(0,j+1),n=i.controlPoints.slice(j+1);return[new W(d,k,m),new W(d,l,n)]},Ga.rationalCurveByEqualArcLength=function(a,b){var c=Da.rationalCurveArcLength(a),d=c/b;return Ga.rationalCurveByArcLength(a,d)},Ga.rationalCurveByArcLength=function(a,b){var c=La.decomposeCurveIntoBeziers(a),d=c.map(function(a){return Da.rationalBezierCurveArcLength(a)}),e=Ca.sum(d),f=[new Ha(a.knots[0],0)];if(b>e)return f;for(var g,h=b,i=0,j=h,k=0,l=0;i<c.length;){for(k+=d[i];j<k+S.EPSILON;)g=Da.rationalBezierCurveParamAtArcLength(c[i],j-l,S.TOLERANCE,d[i]),f.push(new Ha(g,j)),j+=h;l+=d[i],i++}return f};var Ha=b.eval.CurveLengthSample=function(a,b){this.u=a,this.len=b};g["verb.eval.CurveLengthSample"]=Ha,Ha.__name__=["verb","eval","CurveLengthSample"],Ha.prototype={__class__:Ha};var Ia=b.eval.Eval=function(){};g["verb.eval.Eval"]=Ia,Ia.__name__=["verb","eval","Eval"],Ia.rationalCurveTangent=function(a,b){return Ia.rationalCurveDerivatives(a,b,1)[1]},Ia.rationalSurfaceNormal=function(a,b,c){var d=Ia.rationalSurfaceDerivatives(a,b,c,1);return Ca.cross(d[1][0],d[0][1])},Ia.rationalSurfaceDerivatives=function(a,b,c,d){null==d&&(d=1);for(var e=Ia.surfaceDerivatives(a,b,c,d),f=Ia.rational2d(e),g=Ia.weight2d(e),h=[],i=f[0][0].length,j=0,k=d+1;j<k;){var l=j++;h.push([]);for(var m=0,n=d-l+1;m<n;){for(var o=m++,p=f[l][o],q=1,r=o+1;q<r;){var s=q++;Ca.subMulMutate(p,Q.get(o,s)*g[0][s],h[l][o-s])}for(var t=1,u=l+1;t<u;){var v=t++;Ca.subMulMutate(p,Q.get(l,v)*g[v][0],h[l-v][o]);for(var w=Ca.zeros1d(i),x=1,y=o+1;x<y;){var z=x++;Ca.addMulMutate(w,Q.get(o,z)*g[v][z],h[l-v][o-z])}Ca.subMulMutate(p,Q.get(l,v),w)}Ca.mulMutate(1/g[0][0],p),h[l].push(p)}}return h},Ia.rationalSurfacePoint=function(a,b,c){return Ia.dehomogenize(Ia.surfacePoint(a,b,c))},Ia.rationalCurveDerivatives=function(a,b,c){null==c&&(c=1);for(var d=Ia.curveDerivatives(a,b,c),e=Ia.rational1d(d),f=Ia.weight1d(d),g=[],h=0,i=c+1;h<i;){for(var j=h++,k=e[j],l=1,m=j+1;l<m;){var n=l++;Ca.subMulMutate(k,Q.get(j,n)*f[n],g[j-n])}Ca.mulMutate(1/f[0],k),g.push(k)}return g},Ia.rationalCurvePoint=function(a,b){return Ia.dehomogenize(Ia.curvePoint(a,b))},Ia.surfaceDerivatives=function(a,b,c,d){var e=a.knotsU.length-a.degreeU-2,f=a.knotsV.length-a.degreeV-2;return Ia.surfaceDerivativesGivenNM(e,f,a,b,c,d)},Ia.surfaceDerivativesGivenNM=function(a,b,c,d,e,f){var g=c.degreeU,h=c.degreeV,i=c.controlPoints,j=c.knotsU,k=c.knotsV;if(!Ia.areValidRelations(g,i.length,j.length)||!Ia.areValidRelations(h,i[0].length,k.length))throw new C("Invalid relations between control points, knot vector, and n");var l,m=i[0][0].length;l=f<g?f:g;var n;n=f<h?f:h;for(var o=Ca.zeros3d(f+1,f+1,m),p=Ia.knotSpanGivenN(a,g,d,j),q=Ia.knotSpanGivenN(b,h,e,k),r=Ia.derivativeBasisFunctionsGivenNI(p,d,g,a,j),s=Ia.derivativeBasisFunctionsGivenNI(q,e,h,b,k),t=Ca.zeros2d(h+1,m),u=0,v=0,w=l+1;v<w;){for(var x=v++,y=0,z=h+1;y<z;){var A=y++;t[A]=Ca.zeros1d(m);for(var B=0,D=g+1;B<D;){var E=B++;Ca.addMulMutate(t[A],r[x][E],i[p-g+E][q-h+A])}}var F=f-x;u=F<n?F:n;for(var G=0,H=u+1;G<H;){var I=G++;o[x][I]=Ca.zeros1d(m);for(var J=0,K=h+1;J<K;){var L=J++;Ca.addMulMutate(o[x][I],s[I][L],t[L])}}}return o},Ia.surfacePoint=function(a,b,c){var d=a.knotsU.length-a.degreeU-2,e=a.knotsV.length-a.degreeV-2;return Ia.surfacePointGivenNM(d,e,a,b,c)},Ia.surfacePointGivenNM=function(a,b,c,d,e){var f=c.degreeU,g=c.degreeV,h=c.controlPoints,i=c.knotsU,j=c.knotsV;if(!Ia.areValidRelations(f,h.length,i.length)||!Ia.areValidRelations(g,h[0].length,j.length))throw new C("Invalid relations between control points, knot vector, and n");for(var k=h[0][0].length,l=Ia.knotSpanGivenN(a,f,d,i),m=Ia.knotSpanGivenN(b,g,e,j),n=Ia.basisFunctionsGivenKnotSpanIndex(l,d,f,i),o=Ia.basisFunctionsGivenKnotSpanIndex(m,e,g,j),p=l-f,q=m,r=Ca.zeros1d(k),s=Ca.zeros1d(k),t=0,u=g+1;t<u;){var v=t++;s=Ca.zeros1d(k),q=m-g+v;for(var w=0,x=f+1;w<x;){var y=w++;Ca.addMulMutate(s,n[y],h[p+y][q])}Ca.addMulMutate(r,o[v],s)}return r},Ia.curveRegularSamplePoints=function(a,b){for(var c=Ia.curveDerivatives(a,a.knots[0],a.degree),d=1/b,e=d*d,f=c[0],g=Ca.mul(d,c[1]),h=Ca.mul(.5*e,c[2]),i=Ca.mul(e*d*.5,c[3]),j=Ca.add(h,h),k=Ca.add(i,i),l=Ca.mul(.3333333333333333,i),m=[],n=0,o=b+1;n<o;){n++;m.push(Ia.dehomogenize(f)),Ca.addAllMutate([f,g,h,l]),Ca.addAllMutate([g,j,i]),Ca.addAllMutate([j,k]),Ca.addAllMutate([h,i])}return m},Ia.curveRegularSamplePoints2=function(a,b){for(var c=Ia.curveDerivatives(a,a.knots[0],a.degree),d=1/b,e=d*d,f=c[0],g=Ca.mul(d,c[1]),h=Ca.mul(.5*e,c[2]),i=Ca.mul(e*d*.5,c[3]),j=Ca.add(h,h),k=Ca.add(i,i),l=Ca.mul(.3333333333333333,i),m=[],n=0,o=b+1;n<o;){n++;m.push(Ia.dehomogenize(f)),Ca.addAllMutate([f,g,h,l]),Ca.addAllMutate([g,j,i]),Ca.addAllMutate([j,k]),Ca.addAllMutate([h,i])}return m},Ia.rationalSurfaceRegularSampleDerivatives=function(a,b,c,d){for(var e=Ia.surfaceRegularSampleDerivatives(a,b,c,d),f=[],g=b+1,h=c+1,i=d+1,j=0;j<g;){var k=j++,l=[];f.push(l);for(var m=0;m<h;){for(var n=m++,o=e[k][n],p=Ia.rational2d(o),q=Ia.weight2d(o),r=[],s=p[0][0].length,t=0;t<i;){var u=t++;r.push([]);for(var v=0,w=i-u;v<w;){for(var x=v++,y=p[u][x],z=1,A=x+1;z<A;){var B=z++;Ca.subMulMutate(y,Q.get(x,B)*q[0][B],r[u][x-B])}for(var C=1,D=u+1;C<D;){var E=C++;Ca.subMulMutate(y,Q.get(u,E)*q[E][0],r[u-E][x]);for(var F=Ca.zeros1d(s),G=1,H=x+1;G<H;){var I=G++;Ca.addMulMutate(F,Q.get(x,I)*q[E][I],r[u-E][x-I])}Ca.subMulMutate(y,Q.get(u,E),F)}Ca.mulMutate(1/q[0][0],y),r[u].push(y)}}l.push(r)}}return f},Ia.surfaceRegularSampleDerivatives=function(a,b,c,d){for(var e=a.degreeU,f=a.degreeV,g=a.controlPoints,h=a.knotsU,i=a.knotsV,j=g[0][0].length,k=(P.last(h),h[0],P.last(i),i[0],Ia.regularlySpacedDerivativeBasisFunctions(e,h,b)),l=k.item0,m=k.item1,n=Ia.regularlySpacedDerivativeBasisFunctions(f,i,c),o=n.item0,p=n.item1,q=[],r=b+1,s=c+1,t=0;t<r;){var u=t++,v=[];q.push(v);for(var w=0;w<s;){var x=w++;v.push(Ia.surfaceDerivativesGivenBasesKnotSpans(e,f,g,l[u],o[x],m[u],p[x],j,d))}}return q},Ia.rationalSurfaceRegularSamplePoints=function(a,b,c){return Ia.dehomogenize2d(Ia.surfaceRegularSamplePoints(a,b,c))},Ia.surfaceRegularSamplePoints=function(a,b,c){for(var d=a.degreeU,e=a.degreeV,f=a.controlPoints,g=a.knotsU,h=a.knotsV,i=f[0][0].length,j=(P.last(g),g[0],P.last(h),h[0],Ia.regularlySpacedBasisFunctions(d,g,b)),k=j.item0,l=j.item1,m=Ia.regularlySpacedBasisFunctions(e,h,c),n=m.item0,o=m.item1,p=[],q=b+1,r=c+1,s=0;s<q;){var t=s++,u=[];p.push(u);for(var v=0;v<r;){var w=v++;u.push(Ia.surfacePointGivenBasesKnotSpans(d,e,f,k[t],n[w],l[t],o[w],i))}}return p},Ia.regularlySpacedBasisFunctions=function(a,b,c){for(var d=b.length-a-2,e=(P.last(b)-b[0])/c,f=[],g=[],h=b[0],i=Ia.knotSpanGivenN(d,a,h,b),j=c+1,k=0;k<j;){for(k++;h>=b[i+1];)i++;g.push(i),f.push(Ia.basisFunctionsGivenKnotSpanIndex(i,h,a,b)),h+=e}return new _(g,f)},Ia.regularlySpacedDerivativeBasisFunctions=function(a,b,c){for(var d=b.length-a-2,e=(P.last(b)-b[0])/c,f=[],g=[],h=b[0],i=Ia.knotSpanGivenN(d,a,h,b),j=c+1,k=0;k<j;){for(k++;h>=b[i+1];)i++;g.push(i),f.push(Ia.derivativeBasisFunctionsGivenNI(i,h,a,d,b)),h+=e}return new _(g,f)},Ia.surfacePointGivenBasesKnotSpans=function(a,b,c,d,e,f,g,h){for(var i,j=Ca.zeros1d(h),k=d-a,l=e-b,m=0,n=b+1;m<n;){var o=m++;i=Ca.zeros1d(h);for(var p=0,q=a+1;p<q;){var r=p++;Ca.addMulMutate(i,f[r],c[k+r][l])}l++,Ca.addMulMutate(j,g[o],i)}return j},Ia.surfaceDerivativesGivenBasesKnotSpans=function(a,b,c,d,e,f,g,h,i){var j,k=c[0][0].length;j=i<a?i:a;var l;l=i<b?i:b;for(var m=Ca.zeros3d(j+1,l+1,k),n=Ca.zeros2d(b+1,k),o=0,p=0,q=j+1;p<q;){for(var r=p++,s=0,t=b+1;s<t;){var u=s++;n[u]=Ca.zeros1d(k);for(var v=0,w=a+1;v<w;){var x=v++;Ca.addMulMutate(n[u],f[r][x],c[d-a+x][e-b+u])}}var y=i-r;o=y<l?y:l;for(var z=0,A=o+1;z<A;){var B=z++;m[r][B]=Ca.zeros1d(k);for(var C=0,D=b+1;C<D;){var E=C++;Ca.addMulMutate(m[r][B],g[B][E],n[E])}}}return m},Ia.curveDerivatives=function(a,b,c){var d=a.knots.length-a.degree-2;return Ia.curveDerivativesGivenN(d,a,b,c)},Ia.curveDerivativesGivenN=function(a,b,c,d){var e=b.degree,f=b.controlPoints,g=b.knots;if(!Ia.areValidRelations(e,f.length,g.length))throw new C("Invalid relations between control points, knot vector, and n");var h,i=f[0].length;h=d<e?d:e;for(var j=Ca.zeros2d(d+1,i),k=Ia.knotSpanGivenN(a,e,c,g),l=Ia.derivativeBasisFunctionsGivenNI(k,c,e,h,g),m=0,n=h+1;m<n;)for(var o=m++,p=0,q=e+1;p<q;){var r=p++;Ca.addMulMutate(j[o],l[o][r],f[k-e+r])}return j},Ia.curvePoint=function(a,b){var c=a.knots.length-a.degree-2;return Ia.curvePointGivenN(c,a,b)},Ia.areValidRelations=function(a,b,c){return b+a+1-c==0},Ia.curvePointGivenN=function(a,b,c){var d=b.degree,e=b.controlPoints,f=b.knots;if(!Ia.areValidRelations(d,e.length,f.length))throw new C("Invalid relations between control points, knot Array, and n");for(var g=Ia.knotSpanGivenN(a,d,c,f),h=Ia.basisFunctionsGivenKnotSpanIndex(g,c,d,f),i=Ca.zeros1d(e[0].length),j=0,k=d+1;j<k;){var l=j++;Ca.addMulMutate(i,h[l],e[g-d+l])}return i},Ia.volumePoint=function(a,b,c,d){var e=a.knotsU.length-a.degreeU-2,f=a.knotsV.length-a.degreeV-2,g=a.knotsW.length-a.degreeW-2;return Ia.volumePointGivenNML(a,e,f,g,b,c,d)},Ia.volumePointGivenNML=function(a,b,c,d,e,f,g){if(!Ia.areValidRelations(a.degreeU,a.controlPoints.length,a.knotsU.length)||!Ia.areValidRelations(a.degreeV,a.controlPoints[0].length,a.knotsV.length)||!Ia.areValidRelations(a.degreeW,a.controlPoints[0][0].length,a.knotsW.length))throw new C("Invalid relations between control points and knot vector");for(var h=a.controlPoints,i=a.degreeU,j=a.degreeV,k=a.degreeW,l=a.knotsU,m=a.knotsV,n=a.knotsW,o=h[0][0][0].length,p=Ia.knotSpanGivenN(b,i,e,l),q=Ia.knotSpanGivenN(c,j,f,m),r=Ia.knotSpanGivenN(d,k,g,n),s=Ia.basisFunctionsGivenKnotSpanIndex(p,e,i,l),t=Ia.basisFunctionsGivenKnotSpanIndex(q,f,j,m),u=Ia.basisFunctionsGivenKnotSpanIndex(r,g,k,n),v=p-i,w=Ca.zeros1d(o),x=Ca.zeros1d(o),y=Ca.zeros1d(o),z=0,A=k+1;z<A;){var B=z++;y=Ca.zeros1d(o);for(var D=r-k+B,E=0,F=j+1;E<F;){var G=E++;x=Ca.zeros1d(o);for(var H=q-j+G,I=0,J=i+1;I<J;){var K=I++;Ca.addMulMutate(x,s[K],h[v+K][H][D])}Ca.addMulMutate(y,t[G],x)}Ca.addMulMutate(w,u[B],y)}return w},Ia.derivativeBasisFunctions=function(a,b,c){var d=Ia.knotSpan(b,a,c),e=c.length-1,f=e-b-1;return Ia.derivativeBasisFunctionsGivenNI(d,a,b,f,c)},Ia.derivativeBasisFunctionsGivenNI=function(a,b,c,d,e){var f=Ca.zeros2d(c+1,c+1),g=Ca.zeros1d(c+1),h=Ca.zeros1d(c+1),i=0,j=0;f[0][0]=1;for(var k=1,l=c+1;k<l;){var m=k++;g[m]=b-e[a+1-m],h[m]=e[a+m]-b,i=0;for(var n=0;n<m;){var o=n++;f[m][o]=h[o+1]+g[m-o],j=f[o][m-1]/f[m][o],f[o][m]=i+h[o+1]*j,i=g[m-o]*j}f[m][m]=i}for(var p=Ca.zeros2d(d+1,c+1),q=Ca.zeros2d(2,c+1),r=0,s=1,t=0,u=0,v=0,w=0,x=0,y=0,z=c+1;y<z;){var A=y++;p[0][A]=f[A][c]}for(var B=0,C=c+1;B<C;){var D=B++;r=0,s=1,q[0][0]=1;for(var E=1,F=d+1;E<F;){var G=E++;t=0,u=D-G,v=c-G,D>=G&&(q[s][0]=q[r][0]/f[v+1][u],t=q[s][0]*f[u][v]),w=u>=-1?1:-u,x=D-1<=v?G-1:c-D;for(var H=w,I=x+1;H<I;){var J=H++;q[s][J]=(q[r][J]-q[r][J-1])/f[v+1][u+J],t+=q[s][J]*f[u+J][v]}D<=v&&(q[s][G]=-q[r][G-1]/f[v+1][D],t+=q[s][G]*f[D][v]),p[G][D]=t;var K=r;r=s,s=K}}for(var L=c,M=1,N=d+1;M<N;){for(var O=M++,P=0,Q=c+1;P<Q;){var R=P++;p[O][R]*=L}L*=c-O}return p},Ia.basisFunctions=function(a,b,c){var d=Ia.knotSpan(b,a,c);return Ia.basisFunctionsGivenKnotSpanIndex(d,a,b,c)},Ia.basisFunctionsGivenKnotSpanIndex=function(a,b,c,d){var e=Ca.zeros1d(c+1),f=Ca.zeros1d(c+1),g=Ca.zeros1d(c+1),h=0,i=0;e[0]=1;for(var j=1,k=c+1;j<k;){var l=j++;f[l]=b-d[a+1-l],g[l]=d[a+l]-b,h=0;for(var m=0;m<l;){var n=m++;i=e[n]/(g[n+1]+f[l-n]),e[n]=h+g[n+1]*i,h=f[l-n]*i}e[l]=h}return e},Ia.knotSpan=function(a,b,c){return Ia.knotSpanGivenN(c.length-a-2,a,b,c)},Ia.knotSpanGivenN=function(a,b,c,d){if(c>d[a+1]-S.EPSILON)return a;if(c<d[b]+S.EPSILON)return b;for(var e=b,f=a+1,g=Math.floor((e+f)/2);c<d[g]||c>=d[g+1];)c<d[g]?f=g:e=g,g=Math.floor((e+f)/2);return g},Ia.dehomogenize=function(a){for(var b=a.length,c=[],d=a[b-1],e=a.length-1,f=0;f<e;){var g=f++;c.push(a[g]/d)}return c},Ia.rational1d=function(a){var b=a[0].length-1;return a.map(function(a){return a.slice(0,b)})},Ia.rational2d=function(a){return a.map(Ia.rational1d)},Ia.weight1d=function(a){var b=a[0].length-1;return a.map(function(a){return a[b]})},Ia.weight2d=function(a){return a.map(Ia.weight1d)},Ia.dehomogenize1d=function(a){return a.map(Ia.dehomogenize)},Ia.dehomogenize2d=function(a){return a.map(Ia.dehomogenize1d)},Ia.homogenize1d=function(a,b){var c,d=a.length,e=a[0].length,f=[],g=0,h=[];c=null!=b?b:Ca.rep(a.length,1);for(var i=0;i<d;){var j=i++,k=[];h=a[j],g=c[j];for(var l=0;l<e;){var m=l++;k.push(h[m]*g)}k.push(g),f.push(k)}return f},Ia.homogenize2d=function(a,b){var c,d=a.length,e=[];if(null!=b)c=b;else{for(var f=[],g=0;g<d;){g++;f.push(Ca.rep(a[0].length,1))}c=f}for(var h=0;h<d;){var i=h++;e.push(Ia.homogenize1d(a[i],c[i]))}return e};var Ja=b.eval.Intersect=function(){};g["verb.eval.Intersect"]=Ja,Ja.__name__=["verb","eval","Intersect"],Ja.surfaces=function(a,b,c){var d=Ma.rationalSurfaceAdaptive(a),e=Ma.rationalSurfaceAdaptive(b);return Ja.meshes(d,e).map(function(d){return d.map(function(d){return Ja.surfacesAtPointWithEstimate(a,b,d.uv0,d.uv1,c)})}).map(function(a){return Ka.rationalInterpCurve(a.map(function(a){return a.point}),3)})},Ja.surfacesAtPointWithEstimate=function(a,b,c,d,e){var f,g,h,i,j,k,l,m,n,o,p,q,r,s=5,t=0;do{if(f=Ia.rationalSurfaceDerivatives(a,c[0],c[1],1),g=f[0][0],i=f[1][0],j=f[0][1],h=Ca.normalized(Ca.cross(i,j)),k=Ca.dot(h,g),l=Ia.rationalSurfaceDerivatives(b,d[0],d[1],1),m=l[0][0],o=l[1][0],p=l[0][1],n=Ca.normalized(Ca.cross(o,p)),q=Ca.dot(n,m),(r=Ca.distSquared(g,m))<e*e)break;var u=Ca.normalized(Ca.cross(h,n)),v=Ca.dot(u,g),w=Ja.threePlanes(h,k,n,q,u,v);if(null==w)throw new C("panic!");var x=Ca.sub(w,g),y=Ca.sub(w,m),z=Ca.cross(i,h),A=Ca.cross(j,h),B=Ca.cross(o,n),D=Ca.cross(p,n),E=Ca.dot(A,x)/Ca.dot(A,i),F=Ca.dot(z,x)/Ca.dot(z,j),G=Ca.dot(D,y)/Ca.dot(D,o),H=Ca.dot(B,y)/Ca.dot(B,p);c=Ca.add([E,F],c),d=Ca.add([G,H],d),t++}while(t<s);return new fa(c,d,g,r)},Ja.meshes=function(a,b,c,d){null==c&&(c=new qa(a)),null==d&&(d=new qa(b));var e=Ja.boundingBoxTrees(c,d,0),f=P.unique(e.map(function(c){return Ja.triangles(a,c.item0,b,c.item1)}).filter(function(a){return null!=a}).filter(function(a){return Ca.distSquared(a.min.point,a.max.point)>S.EPSILON}),function(a,b){var c=Ca.sub(a.min.uv0,b.min.uv0),d=Ca.dot(c,c),e=Ca.sub(a.max.uv0,b.max.uv0),f=Ca.dot(e,e),g=Ca.sub(a.min.uv0,b.max.uv0),h=Ca.dot(g,g),i=Ca.sub(a.max.uv0,b.min.uv0),j=Ca.dot(i,i);return d<S.EPSILON&&f<S.EPSILON||h<S.EPSILON&&j<S.EPSILON});return Ja.makeMeshIntersectionPolylines(f)},Ja.meshSlices=function(a,b,c,d){for(var e=new wa(a),f=e.boundingBox(),g=f.min[0],h=f.min[1],i=f.max[0],j=f.max[1],k=Ca.span(b,c,d),l=[],m=0;m<k.length;){var n=k[m];++m;var o=[[g,h,n],[i,h,n],[i,j,n],[g,j,n]],p=[[0,0],[1,0],[1,1],[0,1]],q=[[0,1,2],[0,2,3]],r=new Y(q,o,null,p);l.push(Ja.meshes(a,r,e))}return l},Ja.makeMeshIntersectionPolylines=function(a){if(0==a.length)return[];for(var b=0;b<a.length;){var c=a[b];++b,c.max.opp=c.min,c.min.opp=c.max}for(var d=Ja.kdTreeFromSegments(a),e=[],f=0;f<a.length;){var g=a[f];++f,e.push(g.min),e.push(g.max)}for(var h=0;h<e.length;){var i=e[h];if(++h,null==i.adj){var j=Ja.lookupAdjacentSegment(i,d,a.length);null!=j&&null==j.adj&&(i.adj=j,j.adj=i)}}var k=e.filter(function(a){return null==a.adj});0==k.length&&(k=e);for(var l=[],m=0,n=!1;0!=k.length;){var o=k.pop();if(!o.visited){for(var p=[],q=o;null!=q&&!q.visited&&(q.visited=!0,q.opp.visited=!0,p.push(q),m+=2,(q=q.opp.adj)!=o););p.length>0&&(p.push(p[p.length-1].opp),l.push(p))}if(0==k.length&&e.length>0&&(n||m<e.length)){n=!0;var r=e.pop();k.push(r)}}return l},Ja.kdTreeFromSegments=function(a){for(var b=[],c=0;c<a.length;){var d=a[c];++c,b.push(new ma(d.min.point,d.min)),b.push(new ma(d.max.point,d.max))}return new ka(b,Ca.distSquared)},Ja.lookupAdjacentSegment=function(a,b,c){var d=b.nearest(a.point,c,S.EPSILON).filter(function(b){return a!=b.item0.obj}).map(function(a){return a.item0.obj});return 1==d.length?d[0]:null},Ja.curveAndSurface=function(a,b,c,d,e){null==c&&(c=.001),d=null!=d?d:new pa(a),e=null!=e?e:new sa(b);var f=Ja.boundingBoxTrees(d,e,c);return P.unique(f.map(function(a){var b=a.item0,d=a.item1,e=P.first(b.knots),f=P.last(b.knots),g=(e+f)/2,h=P.first(d.knotsU),i=P.last(d.knotsU),j=P.first(d.knotsV),k=P.last(d.knotsV),l=[(h+i)/2,(j+k)/2];return Ja.curveAndSurfaceWithEstimate(b,d,[g].concat(l),c)}).filter(function(a){return Ca.distSquared(a.curvePoint,a.surfacePoint)<c*c}),function(a,b){return Math.abs(a.u-b.u)<.5*c})},Ja.curveAndSurfaceWithEstimate=function(a,b,c,d){null==d&&(d=.001);var e=function(c){var d=Ia.rationalCurvePoint(a,c[0]),e=Ia.rationalSurfacePoint(b,c[1],c[2]),f=Ca.sub(d,e);return Ca.dot(f,f)},f=function(c){var d=Ia.rationalCurveDerivatives(a,c[0],1),e=Ia.rationalSurfaceDerivatives(b,c[1],c[2],1),f=Ca.sub(e[0][0],d[0]),g=Ca.mul(-1,d[1]),h=e[1][0],i=e[0][1];return[2*Ca.dot(g,f),2*Ca.dot(h,f),2*Ca.dot(i,f)]},g=xa.uncmin(e,c,d*d,f),h=g.solution;return new ca(h[0],[h[1],h[2]],Ia.rationalCurvePoint(a,h[0]),Ia.rationalSurfacePoint(b,h[1],h[2]))},Ja.polylineAndMesh=function(a,b,c){for(var d=Ja.boundingBoxTrees(new ra(a),new qa(b),c),e=[],f=0;f<d.length;){var g=d[f];++f;var h=g.item0,i=g.item1,j=Ja.segmentWithTriangle(a.points[h],a.points[h+1],b.points,b.faces[i]);if(null!=j){var k=j.point,l=Ca.lerp(j.p,[a.params[h]],[a.params[h+1]])[0],m=va.triangleUVFromPoint(b,i,k);e.push(new ea(k,l,m,h,i))}}return e},Ja.boundingBoxTrees=function(a,b,c){null==c&&(c=1e-9);var d=[],e=[];d.push(a),e.push(b);for(var f=[];d.length>0;){var g=d.pop(),h=e.pop();if(!g.empty()&&!h.empty()&&g.boundingBox().intersects(h.boundingBox(),c)){var i=g.indivisible(c),j=h.indivisible(c);if(i&&j)f.push(new _(g.yield(),h.yield()));else if(!i||j)if(i||!j){var k=g.split(),l=h.split();d.push(k.item1),e.push(l.item1),d.push(k.item1),e.push(l.item0),d.push(k.item0),e.push(l.item1),d.push(k.item0),e.push(l.item0)}else{var m=g.split();d.push(m.item1),e.push(h),d.push(m.item0),e.push(h)}else{var n=h.split();d.push(g),e.push(n.item1),d.push(g),e.push(n.item0)}}}return f},Ja.curves=function(a,b,c){var d=Ja.boundingBoxTrees(new pa(a),new pa(b),0);return P.unique(d.map(function(d){return Ja.curvesWithEstimate(a,b,P.first(d.item0.knots),P.first(d.item1.knots),c)}).filter(function(a){return Ca.distSquared(a.point0,a.point1)<c}),function(a,b){return Math.abs(a.u0-b.u0)<5*c})},Ja.curvesWithEstimate=function(a,b,c,d,e){var f=function(c){var d=Ia.rationalCurvePoint(a,c[0]),e=Ia.rationalCurvePoint(b,c[1]),f=Ca.sub(d,e);return Ca.dot(f,f)},g=function(c){var d=Ia.rationalCurveDerivatives(a,c[0],1),e=Ia.rationalCurveDerivatives(b,c[1],1),f=Ca.sub(d[0],e[0]),g=d[1],h=Ca.mul(-1,e[1]);return[2*Ca.dot(g,f),2*Ca.dot(h,f)]},h=xa.uncmin(f,[c,d],e*e,g),i=h.solution[0],j=h.solution[1],k=Ia.rationalCurvePoint(a,i),l=Ia.rationalCurvePoint(b,j);return new ba(k,l,i,j)},Ja.triangles=function(a,b,c,d){var e=a.faces[b],f=c.faces[d],g=va.getTriangleNorm(a.points,e),h=va.getTriangleNorm(c.points,f),i=a.points[e[0]],j=c.points[f[0]],k=Ja.planes(i,g,j,h);if(null==k)return null;var l=Ja.clipRayInCoplanarTriangle(k,a,b);if(null==l)return null;var m=Ja.clipRayInCoplanarTriangle(k,c,d);if(null==m)return null;var n=Ja.mergeTriangleClipIntervals(l,m,a,b,c,d);return null==n?null:new aa(new da(n.min.uv0,n.min.uv1,n.min.point,b,d),new da(n.max.uv0,n.max.uv1,n.max.point,b,d))},Ja.clipRayInCoplanarTriangle=function(a,b,c){for(var d=b.faces[c],e=[b.points[d[0]],b.points[d[1]],b.points[d[2]]],f=[b.uvs[d[0]],b.uvs[d[1]],b.uvs[d[2]]],g=[Ca.sub(f[1],f[0]),Ca.sub(f[2],f[1]),Ca.sub(f[0],f[2])],h=[Ca.sub(e[1],e[0]),Ca.sub(e[2],e[1]),Ca.sub(e[0],e[2])],i=h.map(Ca.normalized),j=h.map(Ca.norm),k=null,l=null,m=0;m<3;){var n=m++,o=e[n],p=i[n],q=Ja.rays(o,p,a.origin,a.dir);if(null!=q){var r=q.u0,s=q.u1;r<-S.EPSILON||r>j[n]+S.EPSILON||((null==k||s<k.u)&&(k=new ha(s,Ca.onRay(a.origin,a.dir,s),Ca.onRay(f[n],g[n],r/j[n]))),(null==l||s>l.u)&&(l=new ha(s,Ca.onRay(a.origin,a.dir,s),Ca.onRay(f[n],g[n],r/j[n]))))}}return null==l||null==k?null:new aa(k,l)},Ja.mergeTriangleClipIntervals=function(a,b,c,d,e,f){if(b.min.u>a.max.u+S.EPSILON||a.min.u>b.max.u+S.EPSILON)return null;var g;g=a.min.u>b.min.u?new _(a.min,0):new _(b.min,1);var h;h=a.max.u<b.max.u?new _(a.max,0):new _(b.max,1);var i=new aa(new da(null,null,g.item0.point,d,f),new da(null,null,h.item0.point,d,f));return 0==g.item1?(i.min.uv0=g.item0.uv,i.min.uv1=va.triangleUVFromPoint(e,f,g.item0.point)):(i.min.uv0=va.triangleUVFromPoint(c,d,g.item0.point),i.min.uv1=g.item0.uv),0==h.item1?(i.max.uv0=h.item0.uv,i.max.uv1=va.triangleUVFromPoint(e,f,h.item0.point)):(i.max.uv0=va.triangleUVFromPoint(c,d,h.item0.point),i.max.uv1=h.item0.uv),i},Ja.planes=function(a,b,c,d){var e=Ca.cross(b,d);if(Ca.dot(e,e)<S.EPSILON)return null;var f=0,g=Math.abs(e[0]),h=Math.abs(e[1]),i=Math.abs(e[2]);h>g&&(f=1,g=h),i>g&&(f=2,g=i);var j,k,l,m;0==f?(j=b[1],k=b[2],l=d[1],m=d[2]):1==f?(j=b[0],k=b[2],l=d[0],m=d[2]):(j=b[0],k=b[1],l=d[0],m=d[1]);var n,o=-Ca.dot(a,b),p=-Ca.dot(c,d),q=j*m-k*l,r=(k*p-o*m)/q,s=(o*l-j*p)/q;return n=0==f?[0,r,s]:1==f?[r,0,s]:[r,s,0],new V(n,Ca.normalized(e))},Ja.threePlanes=function(a,b,c,d,e,f){var g=Ca.cross(c,e),h=Ca.dot(a,g);if(Math.abs(h)<S.EPSILON)return null;var i=Ca.sub(Ca.mul(f,c),Ca.mul(d,e)),j=Ca.add(Ca.mul(b,g),Ca.cross(a,i));return Ca.mul(1/h,j)},Ja.polylines=function(a,b,c){for(var d=Ja.boundingBoxTrees(new ra(a),new ra(b),c),e=[],f=0;f<d.length;){var g=d[f];++f;var h=g.item0,i=g.item1,j=Ja.segments(a.points[h],a.points[h+1],b.points[i],b.points[i+1],c);null!=j&&(j.u0=Ca.lerp(j.u0,[a.params[h]],[a.params[h+1]])[0],j.u1=Ca.lerp(j.u1,[b.params[i]],[b.params[i+1]])[0],e.push(j))}return e},Ja.segments=function(a,b,c,d,e){var f=Ca.sub(b,a),g=Math.sqrt(Ca.dot(f,f)),h=Ca.mul(1/g,f),i=Ca.sub(d,c),j=Math.sqrt(Ca.dot(i,i)),k=Ca.mul(1/j,i),l=Ja.rays(a,h,c,k);if(null!=l){var m=Math.min(Math.max(0,l.u0/g),1),n=Math.min(Math.max(0,l.u1/j),1),o=Ca.onRay(a,f,m),p=Ca.onRay(c,i,n);if(Ca.distSquared(o,p)<e*e)return new ba(o,p,m,n)}return null},Ja.rays=function(a,b,c,d){var e=Ca.dot(b,d),f=Ca.dot(b,c),g=Ca.dot(b,a),h=Ca.dot(d,c),i=Ca.dot(d,a),j=Ca.dot(b,b),k=Ca.dot(d,d),l=j*k-e*e;if(Math.abs(l)<S.EPSILON)return null;var m=e*(f-g)-j*(h-i),n=m/l,o=(f-g+n*e)/j,p=Ca.onRay(a,b,o),q=Ca.onRay(c,d,n);return new ba(p,q,o,n)},Ja.segmentWithTriangle=function(a,b,c,d){var e=c[d[0]],f=c[d[1]],g=c[d[2]],h=Ca.sub(f,e),i=Ca.sub(g,e),j=Ca.cross(h,i),k=Ca.sub(b,a),l=Ca.sub(a,e),m=-Ca.dot(j,l),n=Ca.dot(j,k);if(Math.abs(n)<S.EPSILON)return null;var o=m/n;if(o<0||o>1)return null;var p=Ca.add(a,Ca.mul(o,k)),q=Ca.dot(h,i),r=Ca.dot(h,h),s=Ca.dot(i,i),t=Ca.sub(p,e),u=Ca.dot(t,h),v=Ca.dot(t,i),w=q*q-r*s;if(Math.abs(w)<S.EPSILON)return null;var x=(q*v-s*u)/w,y=(q*u-r*v)/w;return x>1+S.EPSILON||y>1+S.EPSILON||y<-S.EPSILON||x<-S.EPSILON||x+y>1+S.EPSILON?null:new ga(p,x,y,o)},Ja.segmentAndPlane=function(a,b,c,d){var e=Ca.dot(d,Ca.sub(b,a));if(Math.abs(e)<S.EPSILON)return null;var f=Ca.dot(d,Ca.sub(c,a)),g=f/e;return g>1+S.EPSILON||g<-S.EPSILON?null:{p:g}};var Ka=b.eval.Make=function(){};g["verb.eval.Make"]=Ka,Ka.__name__=["verb","eval","Make"],Ka.rationalTranslationalSurface=function(a,b){for(var c=Ia.rationalCurvePoint(b,P.first(b.knots)),d=P.first(b.knots),e=P.last(b.knots),f=2*b.controlPoints.length,g=(e-d)/(f-1),h=[],i=0;i<f;){var j=i++,k=Ca.sub(Ia.rationalCurvePoint(b,d+j*g),c),l=La.rationalCurveTransform(a,[[1,0,0,k[0]],[0,1,0,k[1]],[0,0,1,k[2]],[0,0,0,1]]);h.push(l)}return Ka.loftedSurface(h)},Ka.surfaceBoundaryCurves=function(a){return[Ka.surfaceIsocurve(a,P.first(a.knotsU),!1),Ka.surfaceIsocurve(a,P.last(a.knotsU),!1),Ka.surfaceIsocurve(a,P.first(a.knotsV),!0),Ka.surfaceIsocurve(a,P.last(a.knotsV),!0)]},Ka.surfaceIsocurve=function(a,b,c){null==c&&(c=!1);var d;d=c?a.knotsV:a.knotsU;var e;e=c?a.degreeV:a.degreeU;for(var f=Da.knotMultiplicities(d),g=-1,h=0,i=f.length;h<i;){var j=h++;if(Math.abs(b-f[j].knot)<S.EPSILON){g=j;break}}var k=e+1;g>=0&&(k-=f[g].mult);var l;l=k>0?La.surfaceKnotRefine(a,Ca.rep(k,b),c):a;var m=Ia.knotSpan(e,b,d);return Math.abs(b-P.first(d))<S.EPSILON?m=0:Math.abs(b-P.last(d))<S.EPSILON&&(m=(c?l.controlPoints[0].length:l.controlPoints.length)-1),c?new W(l.degreeU,l.knotsU,function(a){for(var b=[],c=0,d=l.controlPoints;c<d.length;){var e=d[c];++c,b.push(e[m])}return b}()):new W(l.degreeV,l.knotsV,l.controlPoints[m])},Ka.loftedSurface=function(a,b){a=La.unifyCurveKnotVectors(a);var c=a[0].degree;null==b&&(b=3),b>a.length-1&&(b=a.length-1);for(var d=a[0].knots,e=[],f=[],g=0,h=a[0].controlPoints.length;g<h;){var i=[g++],j=a.map(function(a){return function(b){return b.controlPoints[a[0]]}}(i)),k=Ka.rationalInterpCurve(j,b,!0);f.push(k.controlPoints),e=k.knots}return new X(c,b,d,e,f)},Ka.clonedCurve=function(a){return new W(a.degree,a.knots.slice(),a.controlPoints.map(function(a){return a.slice()}))},Ka.rationalBezierCurve=function(a,b){for(var c=a.length-1,d=[],e=0,f=c+1;e<f;){e++;d.push(0)}for(var g=0,h=c+1;g<h;){g++;d.push(1)}return null==b&&(b=Ca.rep(a.length,1)),new W(c,d,Ia.homogenize1d(a,b))},Ka.fourPointSurface=function(a,b,c,d,e){null==e&&(e=3);for(var f=e,g=[],h=0,i=e+1;h<i;){for(var j=h++,k=[],l=0,m=e+1;l<m;){var n=l++,o=1-j/f,p=Ca.lerp(o,a,b),q=Ca.lerp(o,d,c),r=Ca.lerp(1-n/f,p,q);r.push(1),k.push(r)}g.push(k)}var s=Ca.rep(e+1,0),t=Ca.rep(e+1,1);return new X(e,e,s.concat(t),s.concat(t),g)},Ka.ellipseArc=function(a,b,c,d,e){var f=Ca.norm(b),g=Ca.norm(c);b=Ca.normalized(b),c=Ca.normalized(c),e<d&&(e=2*Math.PI+d);var h=e-d,i=0;i=h<=Math.PI/2?1:h<=Math.PI?2:h<=3*Math.PI/2?3:4;var j=h/i,k=Math.cos(j/2),l=Ca.add(a,Ca.add(Ca.mul(f*Math.cos(d),b),Ca.mul(g*Math.sin(d),c))),m=Ca.sub(Ca.mul(Math.cos(d),c),Ca.mul(Math.sin(d),b)),n=[],o=Ca.zeros1d(2*i+3),p=0,q=d,r=Ca.zeros1d(2*i);n[0]=l,r[0]=1;for(var s=1,t=i+1;s<t;){var u=s++;q+=j;var v=Ca.add(a,Ca.add(Ca.mul(f*Math.cos(q),b),Ca.mul(g*Math.sin(q),c)));r[p+2]=1,n[p+2]=v;var w=Ca.sub(Ca.mul(Math.cos(q),c),Ca.mul(Math.sin(q),b)),x=Ja.rays(l,Ca.mul(1/Ca.norm(m),m),v,Ca.mul(1/Ca.norm(w),w)),y=Ca.add(l,Ca.mul(x.u0,m));r[p+1]=k,n[p+1]=y,p+=2,u<i&&(l=v,m=w)}for(var z=2*i+1,A=0;A<3;){var B=A++;o[B]=0,o[B+z]=1}switch(i){case 2:o[3]=o[4]=.5;break;case 3:o[3]=o[4]=.3333333333333333,o[5]=o[6]=.6666666666666666;break;case 4:o[3]=o[4]=.25,o[5]=o[6]=.5,o[7]=o[8]=.75}return new W(2,o,Ia.homogenize1d(n,r))},Ka.arc=function(a,b,c,d,e,f){return Ka.ellipseArc(a,Ca.mul(d,Ca.normalized(b)),Ca.mul(d,Ca.normalized(c)),e,f)},Ka.polyline=function(a){for(var b=[0,0],c=0,d=0,e=a.length-1;d<e;){var f=d++;c+=Ca.dist(a[f],a[f+1]),b.push(c)}b.push(c),b=Ca.mul(1/c,b);for(var g,h=[],i=0,j=a.length;i<j;){i++;h.push(1)}return g=h,new W(1,b,Ia.homogenize1d(a.slice(0),g))},Ka.extrudedSurface=function(a,b,c){for(var d=[[],[],[]],e=[[],[],[]],f=Ia.dehomogenize1d(c.controlPoints),g=Ia.weight1d(c.controlPoints),h=Ca.mul(b,a),i=Ca.mul(.5*b,a),j=0,k=f.length;j<k;){var l=j++;d[2][l]=f[l],d[1][l]=Ca.add(i,f[l]),d[0][l]=Ca.add(h,f[l]),e[0][l]=g[l],e[1][l]=g[l],e[2][l]=g[l]}return new X(2,c.degree,[0,0,0,1,1,1],c.knots,Ia.homogenize2d(d,e))},Ka.cylindricalSurface=function(a,b,c,d,e){var f=Ca.cross(a,b),g=(Math.PI,Ka.arc(c,b,f,e,0,2*Math.PI));return Ka.extrudedSurface(a,d,g)},Ka.revolvedSurface=function(a,b,c,d){var e,f,g=Ia.dehomogenize1d(a.controlPoints),h=Ia.weight1d(a.controlPoints);d<=Math.PI/2?(e=1,f=Ca.zeros1d(6+2*(e-1))):d<=Math.PI?(e=2,f=Ca.zeros1d(6+2*(e-1)),f[3]=f[4]=.5):d<=3*Math.PI/2?(e=3,f=Ca.zeros1d(6+2*(e-1)),f[3]=f[4]=.3333333333333333,f[5]=f[6]=.6666666666666666):(e=4,f=Ca.zeros1d(6+2*(e-1)),f[3]=f[4]=.25,f[5]=f[6]=.5,f[7]=f[8]=.75);for(var i=d/e,j=3+2*(e-1),k=0;k<3;){var l=k++;f[l]=0,f[j+l]=1}for(var m=Math.cos(i/2),n=0,o=Ca.zeros1d(e+1),p=Ca.zeros1d(e+1),q=Ca.zeros3d(2*e+1,g.length,3),r=Ca.zeros2d(2*e+1,g.length),s=1,t=e+1;s<t;){var u=s++;n+=i,p[u]=Math.cos(n),o[u]=Math.sin(n)}for(var v=0,w=g.length;v<w;){var x=v++,y=Ba.rayClosestPoint(g[x],b,c),z=Ca.sub(g[x],y),A=Ca.norm(z),B=Ca.cross(c,z);A>S.EPSILON&&(z=Ca.mul(1/A,z),B=Ca.mul(1/A,B)),q[0][x]=g[x];var C=g[x];r[0][x]=h[x];for(var D=B,E=0,F=1,G=e+1;F<G;){var H,I=F++;H=0==A?y:Ca.add(y,Ca.add(Ca.mul(A*p[I],z),Ca.mul(A*o[I],B))),q[E+2][x]=H,r[E+2][x]=h[x];var J=Ca.sub(Ca.mul(p[I],B),Ca.mul(o[I],z));if(0==A)q[E+1][x]=y;else{var K=Ja.rays(C,Ca.mul(1/Ca.norm(D),D),H,Ca.mul(1/Ca.norm(J),J)),L=Ca.add(C,Ca.mul(K.u0,D));q[E+1][x]=L}r[E+1][x]=m*h[x],E+=2,I<e&&(C=H,D=J)}}return new X(2,a.degree,f,a.knots,Ia.homogenize2d(q,r))},Ka.sphericalSurface=function(a,b,c,d){var e=Ka.arc(a,Ca.mul(-1,b),c,d,0,Math.PI);return Ka.revolvedSurface(e,a,b,2*Math.PI)},Ka.conicalSurface=function(a,b,c,d,e){var f=2*Math.PI,g=1,h=[Ca.add(c,Ca.mul(d,a)),Ca.add(c,Ca.mul(e,b))],i=[0,0,1,1],j=[1,1],k=new W(g,i,Ia.homogenize1d(h,j));return Ka.revolvedSurface(k,c,a,f)},Ka.rationalInterpCurve=function(a,b,c,d,e){if(null==c&&(c=!1),null==b&&(b=3),a.length<b+1)throw new C("You need to supply at least degree + 1 points! You only supplied "+a.length+" points.");for(var f=[0],g=1,h=a.length;g<h;){var i=g++,j=Ca.norm(Ca.sub(a[i],a[i-1])),k=f[f.length-1];f.push(k+j)}for(var l=f[f.length-1],m=0,n=f.length;m<n;){var o=m++;f[o]=f[o]/l}var p,q=Ca.rep(b+1,0),r=null!=d&&null!=e;p=r?0:1;var s;s=r?f.length-b+1:f.length-b;for(var t=p;t<s;){for(var u=t++,v=0,w=0;w<b;){v+=f[u+w++]}q.push(1/b*v)}var x,y=q.concat(Ca.rep(b+1,1)),z=[];x=r?a.length+1:a.length-1;var A;A=r?a.length-(b-1):a.length-(b+1);for(var B=0;B<f.length;){var D=f[B];++B;var E=Ia.knotSpanGivenN(x,b,D,y),F=Ia.basisFunctionsGivenKnotSpanIndex(E,D,b,y),G=E-b,H=Ca.zeros1d(G),I=Ca.zeros1d(A-G)
;z.push(H.concat(F).concat(I))}if(r){var J=z[0].length-2,K=[-1,1].concat(Ca.zeros1d(J)),L=Ca.zeros1d(J).concat([-1,1]);P.spliceAndInsert(z,1,0,K),P.spliceAndInsert(z,z.length-1,0,L)}for(var M=a[0].length,N=[],O=(1-y[y.length-b-2])/b,Q=y[b+1]/b,R=0;R<M;){var S,T=[R++];if(r){S=[a[0][T[0]]],S.push(Q*d[T[0]]);for(var U=1,V=a.length-1;U<V;){var X=U++;S.push(a[X][T[0]])}S.push(O*e[T[0]]),S.push(P.last(a)[T[0]])}else S=a.map(function(a){return function(b){return b[a[0]]}}(T));var Y=ta.solve(z,S);N.push(Y)}var Z=ta.transpose(N);if(!c){var $=Ca.rep(Z.length,1);Z=Ia.homogenize1d(Z,$)}return new W(b,y,Z)};var La=b.eval.Modify=function(){};g["verb.eval.Modify"]=La,La.__name__=["verb","eval","Modify"],La.curveReverse=function(a){return new W(a.degree,La.knotsReverse(a.knots),P.reversed(a.controlPoints))},La.surfaceReverse=function(a,b){return null==b&&(b=!1),b?new X(a.degreeU,a.degreeV,a.knotsU,La.knotsReverse(a.knotsV),function(b){for(var c=[],d=0,e=a.controlPoints;d<e.length;){var f=e[d];++d,c.push(P.reversed(f))}return c}()):new X(a.degreeU,a.degreeV,La.knotsReverse(a.knotsU),a.knotsV,P.reversed(a.controlPoints))},La.knotsReverse=function(a){for(var b=P.first(a),c=(P.last(a),[b]),d=a.length,e=1;e<d;){var f=e++;c.push(c[f-1]+(a[d-f]-a[d-f-1]))}return c},La.unifyCurveKnotVectors=function(a){a=a.map(Ka.clonedCurve);for(var b=j.fold(a,function(a,b){return La.imax(a.degree,b)},0),c=0,d=a.length;c<d;){var e=c++;a[e].degree<b&&(a[e]=La.curveElevateDegree(a[e],b))}for(var f,g=[],h=0;h<a.length;){var i=a[h];++h,g.push(new aa(P.first(i.knots),P.last(i.knots)))}f=g;for(var k=0,l=a.length;k<l;){var m=k++,n=[f[m].min];a[m].knots=a[m].knots.map(function(a){return function(b){return b-a[0]}}(n))}for(var o=f.map(function(a){return a.max-a.min}),p=j.fold(o,function(a,b){return Math.max(a,b)},0),q=0,r=a.length;q<r;){var s=q++,t=[p/o[s]];a[s].knots=a[s].knots.map(function(a){return function(b){return b*a[0]}}(t))}for(var u=j.fold(a,function(a,b){return Ca.sortedSetUnion(a.knots,b)},[]),v=0,w=a.length;v<w;){var x=v++,y=Ca.sortedSetSub(u,a[x].knots);0==y.length&&(a[x]=a[x]),a[x]=La.curveKnotRefine(a[x],y)}return a},La.imin=function(a,b){return a<b?a:b},La.imax=function(a,b){return a>b?a:b},La.curveElevateDegree=function(a,b){if(b<=a.degree)return a;var c=a.knots.length-a.degree-2,d=a.degree,e=a.knots,f=a.controlPoints,g=b-a.degree,h=a.controlPoints[0].length,i=Ca.zeros2d(d+g+1,d+1),j=[],k=[],l=[],m=c+d+1,n=b,o=Math.floor(n/2),p=[],q=[];i[0][0]=1,i[n][d]=1;for(var r=1,s=o+1;r<s;)for(var t=r++,u=1/Q.get(n,t),v=La.imin(d,t),w=La.imax(0,t-g),x=v+1;w<x;){var y=w++;i[t][y]=u*Q.get(d,y)*Q.get(g,t-y)}for(var z=o+1;z<n;)for(var A=z++,B=La.imin(d,A),C=La.imax(0,A-g),D=B+1;C<D;){var E=C++;i[A][E]=i[n-A][d-E]}var F=n,G=n+1,H=-1,I=d,J=d+1,K=1,L=e[0];p[0]=f[0];for(var M=0,N=n+1;M<N;){q[M++]=L}for(var O=0,P=d+1;O<P;){var R=O++;j[R]=f[R]}for(;J<m;){for(var S=J;J<m&&e[J]==e[J+1];)J+=1;var T=J-S+1,U=e[J],V=H;H=d-T;var X;X=V>0?Math.floor((V+2)/2):1;var Y;if(Y=H>0?Math.floor(n-(H+1)/2):n,H>0){for(var Z=U-L,$=[],_=d;_>T;)$[_-T-1]=Z/(e[I+_]-L),_--;for(var aa=1,ba=H+1;aa<ba;){for(var ca=aa++,da=H-ca,ea=T+ca,fa=d;fa>=ea;)j[fa]=Ca.add(Ca.mul($[fa-ea],j[fa]),Ca.mul(1-$[fa-ea],j[fa-1])),fa--;l[da]=j[d]}}for(var ga=X,ha=n+1;ga<ha;){var ia=ga++;k[ia]=Ca.zeros1d(h);for(var ja=La.imin(d,ia),ka=La.imax(0,ia-g),la=ja+1;ka<la;){var ma=ka++;k[ia]=Ca.add(k[ia],Ca.mul(i[ia][ma],j[ma]))}}if(V>1)for(var na=G-2,oa=G,pa=U-L,qa=(U-q[G-1])/pa,ra=1;ra<V;){for(var sa=ra++,ta=na,ua=oa,va=ua-G+1;ua-ta>sa;){if(ta<K){var wa=(U-q[ta])/(L-q[ta]);p[ta]=Ca.lerp(wa,p[ta],p[ta-1])}if(ua>=X){if(ua-sa<=G-n+V){var xa=(U-q[ua-sa])/pa;k[va]=Ca.lerp(xa,k[va],k[va+1])}}else k[va]=Ca.lerp(qa,k[va],k[va+1]);ta+=1,ua-=1,va-=1}na-=1,oa+=1}if(I!=d)for(var ya=0,za=n-V;ya<za;){ya++;q[G]=L,G+=1}for(var Aa=X,Ba=Y+1;Aa<Ba;){var Da=Aa++;p[K]=k[Da],K+=1}if(J<m){for(var Ea=0;Ea<H;){var Fa=Ea++;j[Fa]=l[Fa]}for(var Ga=H,Ha=d+1;Ga<Ha;){var Ia=Ga++;j[Ia]=f[J-d+Ia]}I=J,J+=1,L=U}else for(var Ja=0,Ka=n+1;Ja<Ka;){var Ma=Ja++;q[G+Ma]=U}}return F-n-1,new W(b,q,p)},La.rationalSurfaceTransform=function(a,b){for(var c=Ia.dehomogenize2d(a.controlPoints),d=0,e=c.length;d<e;)for(var f=d++,g=0,h=c[f].length;g<h;){var i=g++,j=c[f][i];j.push(1),c[f][i]=ta.dot(b,j).slice(0,j.length-1)}return new X(a.degreeU,a.degreeV,a.knotsU.slice(),a.knotsV.slice(),Ia.homogenize2d(c,Ia.weight2d(a.controlPoints)))},La.rationalCurveTransform=function(a,b){for(var c=Ia.dehomogenize1d(a.controlPoints),d=0,e=c.length;d<e;){var f=d++,g=c[f];g.push(1),c[f]=ta.dot(b,g).slice(0,g.length-1)}return new W(a.degree,a.knots.slice(),Ia.homogenize1d(c,Ia.weight1d(a.controlPoints)))},La.surfaceKnotRefine=function(a,b,c){var d,e,f,g=[];c?(f=a.controlPoints,d=a.knotsV,e=a.degreeV):(f=ta.transpose(a.controlPoints),d=a.knotsU,e=a.degreeU);for(var h=null,i=0;i<f.length;){var j=f[i];++i,h=La.curveKnotRefine(new W(e,d,j),b),g.push(h.controlPoints)}var k=h.knots;return c?new X(a.degreeU,a.degreeV,a.knotsU.slice(),k,g):(g=ta.transpose(g),new X(a.degreeU,a.degreeV,k,a.knotsV.slice(),g))},La.decomposeCurveIntoBeziers=function(a){for(var b=a.degree,c=a.controlPoints,d=a.knots,e=Da.knotMultiplicities(d),f=b+1,g=0;g<e.length;){var h=e[g];if(++g,h.mult<f){var i=Ca.rep(f-h.mult,h.knot),j=La.curveKnotRefine(new W(b,d,c),i);d=j.knots,c=j.controlPoints}}for(var k=(d.length,2*f),l=[],m=0;m<c.length;){var n=d.slice(m,m+k),o=c.slice(m,m+f);l.push(new W(b,n,o)),m+=f}return l},La.curveKnotRefine=function(a,b){if(0==b.length)return Ka.clonedCurve(a);for(var c=a.degree,d=a.controlPoints,e=a.knots,f=d.length-1,g=f+c+1,h=b.length-1,i=Ia.knotSpan(c,b[0],e),j=Ia.knotSpan(c,b[h],e),k=[],l=[],m=0,n=i-c+1;m<n;){var o=m++;k[o]=d[o]}for(var p=j-1,q=f+1;p<q;){var r=p++;k[r+h+1]=d[r]}for(var s=0,t=i+1;s<t;){var u=s++;l[u]=e[u]}for(var v=j+c,w=g+1;v<w;){var x=v++;l[x+h+1]=e[x]}for(var y=j+c-1,z=j+c+h,A=h;A>=0;){for(;b[A]<=e[y]&&y>i;)k[z-c-1]=d[y-c-1],l[z]=e[y],z-=1,y-=1;k[z-c-1]=k[z-c];for(var B=1,C=c+1;B<C;){var D=B++,E=z-c+D,F=l[z+D]-b[A];Math.abs(F)<S.EPSILON?k[E-1]=k[E]:(F/=l[z+D]-e[y-c+D],k[E-1]=Ca.add(Ca.mul(F,k[E-1]),Ca.mul(1-F,k[E])))}l[z]=b[A],z-=1,A--}return new W(c,l,k)},La.curveKnotInsert=function(a,b,c){for(var d=a.degree,e=a.controlPoints,f=a.knots,g=0,h=e.length,i=Ia.knotSpan(d,b,f),j=[],k=[],l=[],m=1,n=i+1;m<n;){var o=m++;k[o]=f[o]}for(var p=1,q=c+1;p<q;){k[i+p++]=b}for(var r=i+1,s=f.length;r<s;){var t=r++;k[t+c]=f[t]}for(var u=0,v=i-d+1;u<v;){var w=u++;l[w]=e[w]}for(var x=i-g;x<h;){var y=x++;l[y+c]=e[y]}for(var z=0,A=d-g+1;z<A;){var B=z++;j[B]=e[i-d+B]}for(var C=0,D=0,E=1,F=c+1;E<F;){var G=E++;C=i-d+G;for(var H=0,I=d-G-g+1;H<I;){var J=H++;D=(b-f[C+J])/(f[J+i+1]-f[C+J]),j[J]=Ca.add(Ca.mul(D,j[J+1]),Ca.mul(1-D,j[J]))}l[C]=j[0],l[i+c-G-g]=j[d-G-g]}for(var K=C+1,L=i-g;K<L;){var M=K++;l[M]=j[M-C]}return new W(d,k,l)};var Ma=b.eval.Tess=function(){};g["verb.eval.Tess"]=Ma,Ma.__name__=["verb","eval","Tess"],Ma.rationalCurveRegularSample=function(a,b,c){return Ma.rationalCurveRegularSampleRange(a,a.knots[0],P.last(a.knots),b,c)},Ma.rationalCurveRegularSampleRange=function(a,b,c,d,e){d<1&&(d=2);for(var f=[],g=(c-b)/(d-1),h=0,i=0;i<d;){h=b+g*i++,e?f.push([h].concat(Ia.rationalCurvePoint(a,h))):f.push(Ia.rationalCurvePoint(a,h))}return f},Ma.rationalCurveAdaptiveSample=function(a,b,c){if(null==c&&(c=!1),null==b&&(b=1e-6),1==a.degree){if(c){for(var d=[],e=0,f=a.controlPoints.length;e<f;){var g=e++;d.push([a.knots[g+1]].concat(Ia.dehomogenize(a.controlPoints[g])))}return d}return a.controlPoints.map(Ia.dehomogenize)}return Ma.rationalCurveAdaptiveSampleRange(a,a.knots[0],P.last(a.knots),b,c)},Ma.rationalCurveAdaptiveSampleRange=function(a,b,c,d,e){var f=Ia.rationalCurvePoint(a,b),g=Ia.rationalCurvePoint(a,c),h=.5+.2*Math.random(),i=b+(c-b)*h,j=Ia.rationalCurvePoint(a,i),k=Ca.sub(f,g),l=Ca.sub(f,j);if(Ca.dot(k,k)<d&&Ca.dot(l,l)>d||!Ba.threePointsAreFlat(f,j,g,d)){var m=b+.5*(c-b),n=Ma.rationalCurveAdaptiveSampleRange(a,b,m,d,e),o=Ma.rationalCurveAdaptiveSampleRange(a,m,c,d,e);return n.slice(0,-1).concat(o)}return e?[[b].concat(f),[c].concat(g)]:[f,g]},Ma.rationalSurfaceNaive=function(a,b,c){b<1&&(b=1),c<1&&(c=1);for(var d=(a.degreeU,a.degreeV,a.controlPoints,a.knotsU),e=a.knotsV,f=P.last(d)-d[0],g=P.last(e)-e[0],h=f/b,i=g/c,j=[],k=[],l=[],m=0,n=b+1;m<n;)for(var o=m++,p=0,q=c+1;p<q;){var r=p++,s=o*h,t=r*i;k.push([s,t]);var u=Ia.rationalSurfaceDerivatives(a,s,t,1),v=u[0][0];j.push(v);var w=Ca.normalized(Ca.cross(u[1][0],u[0][1]));l.push(w)}for(var x=[],y=0;y<b;)for(var z=y++,A=0;A<c;){var B=A++,C=z*(c+1)+B,D=(z+1)*(c+1)+B,E=D+1,F=C+1,G=[C,D,E],H=[C,E,F];x.push(G),x.push(H)}return new Y(x,j,l,k)},Ma.divideRationalSurfaceAdaptive=function(a,b){null==b&&(b=new Na),null!=b.minDivsU?b.minDivsU=b.minDivsU:b.minDivsU=1,null!=b.minDivsV?b.minDivsU=b.minDivsV:b.minDivsU=1,null!=b.refine?b.refine=b.refine:b.refine=!0;var c,d=2*(a.controlPoints.length-1),e=2*(a.controlPoints[0].length-1);c=b.minDivsU>d?b.minDivsU=b.minDivsU:b.minDivsU=d;var f;f=b.minDivsV>e?b.minDivsV=b.minDivsV:b.minDivsV=e;for(var g=P.last(a.knotsU),h=a.knotsU[0],i=P.last(a.knotsV),j=a.knotsV[0],k=(g-h)/c,l=(i-j)/f,m=[],n=[],o=0,p=f+1;o<p;){for(var q=o++,r=[],s=0,t=c+1;s<t;){var u=s++,v=h+k*u,w=j+l*q,x=Ia.rationalSurfaceDerivatives(a,v,w,1),y=Ca.normalized(Ca.cross(x[0][1],x[1][0]));r.push(new ia(x[0][0],y,[v,w],-1,Ca.isZero(y)))}n.push(r)}for(var z=0;z<f;)for(var A=z++,B=0;B<c;){var C=B++,D=[n[f-A-1][C],n[f-A-1][C+1],n[f-A][C+1],n[f-A][C]];m.push(new Oa(a,D))}if(!b.refine)return m;for(var E=0;E<f;)for(var F=E++,G=0;G<c;){var H=G++,I=F*c+H,J=Ma.north(I,F,H,c,f,m),K=Ma.east(I,F,H,c,f,m),L=Ma.south(I,F,H,c,f,m),M=Ma.west(I,F,H,c,f,m);m[I].neighbors=[L,K,J,M],m[I].divide(b)}return m},Ma.north=function(a,b,c,d,e,f){return 0==b?null:f[a-d]},Ma.south=function(a,b,c,d,e,f){return b==e-1?null:f[a+d]},Ma.east=function(a,b,c,d,e,f){return c==d-1?null:f[a+1]},Ma.west=function(a,b,c,d,e,f){return 0==c?null:f[a-1]},Ma.triangulateAdaptiveRefinementNodeTree=function(a){for(var b=Y.empty(),c=0;c<a.length;){var d=a[c];++c,d.triangulate(b)}return b},Ma.rationalSurfaceAdaptive=function(a,b){b=null!=b?b:new Na;var c=Ma.divideRationalSurfaceAdaptive(a,b);return Ma.triangulateAdaptiveRefinementNodeTree(c)};var Na=b.core.AdaptiveRefinementOptions=function(){this.minDivsV=1,this.minDivsU=1,this.refine=!0,this.maxDepth=10,this.minDepth=0,this.normTol=.025};g["verb.eval.AdaptiveRefinementOptions"]=Na,Na.__name__=["verb","eval","AdaptiveRefinementOptions"],Na.prototype={__class__:Na};var Oa=b.core.AdaptiveRefinementNode=function(a,b,c){if(this.srf=a,this.neighbors=null==c?[null,null,null,null]:c,this.corners=b,null==this.corners){var d=a.knotsU[0],e=P.last(a.knotsU),f=a.knotsV[0],g=P.last(a.knotsV);this.corners=[ia.fromUv(d,f),ia.fromUv(e,f),ia.fromUv(e,g),ia.fromUv(d,g)]}};g["verb.eval.AdaptiveRefinementNode"]=Oa,Oa.__name__=["verb","eval","AdaptiveRefinementNode"],Oa.prototype={isLeaf:function(){return null==this.children},center:function(){return null!=this.centerPoint?this.centerPoint:this.evalSrf(this.u05,this.v05)},evalCorners:function(){this.u05=(this.corners[0].uv[0]+this.corners[2].uv[0])/2,this.v05=(this.corners[0].uv[1]+this.corners[2].uv[1])/2;for(var a=0;a<4;){var b=a++;if(null==this.corners[b].point){var c=this.corners[b];this.evalSrf(c.uv[0],c.uv[1],c)}}},evalSrf:function(a,b,c){var d=Ia.rationalSurfaceDerivatives(this.srf,a,b,1),e=d[0][0],f=Ca.cross(d[0][1],d[1][0]),g=Ca.isZero(f);return g||(f=Ca.normalized(f)),null!=c?(c.degen=g,c.point=e,c.normal=f,c):new ia(e,f,[a,b],-1,g)},getEdgeCorners:function(a){if(this.isLeaf())return[this.corners[a]];if(this.horizontal)switch(a){case 0:return this.children[0].getEdgeCorners(0);case 1:return this.children[0].getEdgeCorners(1).concat(this.children[1].getEdgeCorners(1));case 2:return this.children[1].getEdgeCorners(2);case 3:return this.children[1].getEdgeCorners(3).concat(this.children[0].getEdgeCorners(3))}switch(a){case 0:return this.children[0].getEdgeCorners(0).concat(this.children[1].getEdgeCorners(0));case 1:return this.children[1].getEdgeCorners(1);case 2:return this.children[1].getEdgeCorners(2).concat(this.children[0].getEdgeCorners(2));case 3:return this.children[0].getEdgeCorners(3)}return null},getAllCorners:function(a){var b=[this.corners[a]];if(null==this.neighbors[a])return b;var c=this.neighbors[a].getEdgeCorners((a+2)%4),d=a%2,e=S.EPSILON,f=this,g=[function(a){return a.uv[0]>f.corners[0].uv[0]+e&&a.uv[0]<f.corners[2].uv[0]-e},function(a){return a.uv[1]>f.corners[0].uv[1]+e&&a.uv[1]<f.corners[2].uv[1]-e}],h=c.filter(g[d]);return h.reverse(),b.concat(h)},midpoint:function(a){if(null==this.midPoints&&(this.midPoints=[null,null,null,null]),null!=this.midPoints[a])return this.midPoints[a];switch(a){case 0:this.midPoints[0]=this.evalSrf(this.u05,this.corners[0].uv[1]);break;case 1:this.midPoints[1]=this.evalSrf(this.corners[1].uv[0],this.v05);break;case 2:this.midPoints[2]=this.evalSrf(this.u05,this.corners[2].uv[1]);break;case 3:this.midPoints[3]=this.evalSrf(this.corners[0].uv[0],this.v05)}return this.midPoints[a]},hasBadNormals:function(){return this.corners[0].degen||this.corners[1].degen||this.corners[2].degen||this.corners[3].degen},fixNormals:function(){for(var a=this.corners.length,b=0;b<a;){var c=b++;this.corners[c];if(this.corners[c].degen){var d=this.corners[(c+1)%a],e=this.corners[(c+3)%a];d.degen?this.corners[c].normal=e.normal:this.corners[c].normal=d.normal}}},shouldDivide:function(a,b){if(b<a.minDepth)return!0;if(b>=a.maxDepth)return!1;if(this.hasBadNormals())return this.fixNormals(),!1;if(this.splitVert=Ca.normSquared(Ca.sub(this.corners[0].normal,this.corners[1].normal))>a.normTol||Ca.normSquared(Ca.sub(this.corners[2].normal,this.corners[3].normal))>a.normTol,this.splitHoriz=Ca.normSquared(Ca.sub(this.corners[1].normal,this.corners[2].normal))>a.normTol||Ca.normSquared(Ca.sub(this.corners[3].normal,this.corners[0].normal))>a.normTol,this.splitVert||this.splitHoriz)return!0;var c=this.center();return Ca.normSquared(Ca.sub(c.normal,this.corners[0].normal))>a.normTol||Ca.normSquared(Ca.sub(c.normal,this.corners[1].normal))>a.normTol||Ca.normSquared(Ca.sub(c.normal,this.corners[2].normal))>a.normTol||Ca.normSquared(Ca.sub(c.normal,this.corners[3].normal))>a.normTol},divide:function(a){null==a&&(a=new Na),null==a.normTol&&(a.normTol=.085),null==a.minDepth&&(a.minDepth=0),null==a.maxDepth&&(a.maxDepth=10),this._divide(a,0,!0)},_divide:function(a,b,c){if(this.evalCorners(),this.shouldDivide(a,b)){if(b++,this.splitVert&&!this.splitHoriz?c=!1:!this.splitVert&&this.splitHoriz&&(c=!0),this.horizontal=c,this.horizontal){var d=[this.corners[0],this.corners[1],this.midpoint(1),this.midpoint(3)],e=[this.midpoint(3),this.midpoint(1),this.corners[2],this.corners[3]];this.children=[new Oa(this.srf,d),new Oa(this.srf,e)],this.children[0].neighbors=[this.neighbors[0],this.neighbors[1],this.children[1],this.neighbors[3]],this.children[1].neighbors=[this.children[0],this.neighbors[1],this.neighbors[2],this.neighbors[3]]}else{var f=[this.corners[0],this.midpoint(0),this.midpoint(2),this.corners[3]],g=[this.midpoint(0),this.corners[1],this.corners[2],this.midpoint(2)];this.children=[new Oa(this.srf,f),new Oa(this.srf,g)],this.children[0].neighbors=[this.neighbors[0],this.children[1],this.neighbors[2],this.neighbors[3]],this.children[1].neighbors=[this.neighbors[0],this.neighbors[1],this.neighbors[2],this.children[0]]}for(var h=0,i=this.children;h<i.length;){var j=i[h];++h,j._divide(a,b,!c)}}},triangulate:function(a){if(null==a&&(a=Y.empty()),this.isLeaf())return this.triangulateLeaf(a);for(var b=0,c=this.children;b<c.length;){var d=c[b];if(++b,null==d)break;d.triangulate(a)}return a},triangulateLeaf:function(a){for(var b=a.points.length,c=[],d=[],e=0,f=0;f<4;){var g=f++,h=this.getAllCorners(g);2==h.length&&(e=g+1);for(var i=0,j=h.length;i<j;){var k=i++;c.push(h[k])}}for(var l=0;l<c.length;){var m=c[l];++l,-1==m.id?(a.uvs.push(m.uv),a.points.push(m.point),a.normals.push(m.normal),m.id=b,d.push(b),b++):d.push(m.id)}if(4==c.length)return a.faces.push([d[0],d[3],d[1]]),a.faces.push([d[3],d[2],d[1]]),a;if(5==c.length){var n=d.length;return 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