gl-matrix-min.js

/*!
@fileoverview gl-matrix - High performance matrix and vector operations
@author Brandon Jones
@author Colin MacKenzie IV
@version 3.3.0

Copyright (c) 2015-2020, Brandon Jones, Colin MacKenzie IV.

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

*/
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t[0]=r,t[1]=e,t[2]=u,t[3]=o,t[4]=i,t[5]=h,t[6]=f*r+l*o+c,t[7]=f*e+l*i+s,t[8]=f*u+l*h+M,t},rotate:function(t,n,a){var r=n[0],e=n[1],u=n[2],o=n[3],i=n[4],h=n[5],c=n[6],s=n[7],M=n[8],f=Math.sin(a),l=Math.cos(a);return t[0]=l*r+f*o,t[1]=l*e+f*i,t[2]=l*u+f*h,t[3]=l*o-f*r,t[4]=l*i-f*e,t[5]=l*h-f*u,t[6]=c,t[7]=s,t[8]=M,t},scale:function(t,n,a){var r=a[0],e=a[1];return t[0]=r*n[0],t[1]=r*n[1],t[2]=r*n[2],t[3]=e*n[3],t[4]=e*n[4],t[5]=e*n[5],t[6]=n[6],t[7]=n[7],t[8]=n[8],t},fromTranslation:function(t,n){return t[0]=1,t[1]=0,t[2]=0,t[3]=0,t[4]=1,t[5]=0,t[6]=n[0],t[7]=n[1],t[8]=1,t},fromRotation:function(t,n){var a=Math.sin(n),r=Math.cos(n);return t[0]=r,t[1]=a,t[2]=0,t[3]=-a,t[4]=r,t[5]=0,t[6]=0,t[7]=0,t[8]=1,t},fromScaling:function(t,n){return t[0]=n[0],t[1]=0,t[2]=0,t[3]=0,t[4]=n[1],t[5]=0,t[6]=0,t[7]=0,t[8]=1,t},fromMat2d:function(t,n){return t[0]=n[0],t[1]=n[1],t[2]=0,t[3]=n[2],t[4]=n[3],t[5]=0,t[6]=n[4],t[7]=n[5],t[8]=1,t},fromQuat:function(t,n){var a=n[0],r=n[1],e=n[2],u=n[3],o=a+a,i=r+r,h=e+e,c=a*o,s=r*o,M=r*i,f=e*o,l=e*i,v=e*h,b=u*o,m=u*i,d=u*h;return t[0]=1-M-v,t[3]=s-d,t[6]=f+m,t[1]=s+d,t[4]=1-c-v,t[7]=l-b,t[2]=f-m,t[5]=l+b,t[8]=1-c-M,t},normalFromMat4:function(t,n){var a=n[0],r=n[1],e=n[2],u=n[3],o=n[4],i=n[5],h=n[6],c=n[7],s=n[8],M=n[9],f=n[10],l=n[11],v=n[12],b=n[13],m=n[14],d=n[15],p=a*i-r*o,x=a*h-e*o,y=a*c-u*o,q=r*h-e*i,g=r*c-u*i,_=e*c-u*h,A=s*b-M*v,w=s*m-f*v,R=s*d-l*v,z=M*m-f*b,j=M*d-l*b,P=f*d-l*m,S=p*P-x*j+y*z+q*R-g*w+_*A;return S?(S=1/S,t[0]=(i*P-h*j+c*z)*S,t[1]=(h*R-o*P-c*w)*S,t[2]=(o*j-i*R+c*A)*S,t[3]=(e*j-r*P-u*z)*S,t[4]=(a*P-e*R+u*w)*S,t[5]=(r*R-a*j-u*A)*S,t[6]=(b*_-m*g+d*q)*S,t[7]=(m*y-v*_-d*x)*S,t[8]=(v*g-b*y+d*p)*S,t):null},projection:function(t,n,a){return t[0]=2/n,t[1]=0,t[2]=0,t[3]=0,t[4]=-2/a,t[5]=0,t[6]=-1,t[7]=1,t[8]=1,t},str:function(t){return"mat3("+t[0]+", "+t[1]+", "+t[2]+", "+t[3]+", "+t[4]+", "+t[5]+", "+t[6]+", "+t[7]+", "+t[8]+")"},frob:function(t){return Math.hypot(t[0],t[1],t[2],t[3],t[4],t[5],t[6],t[7],t[8])},add:function(t,n,a){return t[0]=n[0]+a[0],t[1]=n[1]+a[1],t[2]=n[2]+a[2],t[3]=n[3]+a[3],t[4]=n[4]+a[4],t[5]=n[5]+a[5],t[6]=n[6]+a[6],t[7]=n[7]+a[7],t[8]=n[8]+a[8],t},subtract:d,multiplyScalar:function(t,n,a){return t[0]=n[0]*a,t[1]=n[1]*a,t[2]=n[2]*a,t[3]=n[3]*a,t[4]=n[4]*a,t[5]=n[5]*a,t[6]=n[6]*a,t[7]=n[7]*a,t[8]=n[8]*a,t},multiplyScalarAndAdd:function(t,n,a,r){return t[0]=n[0]+a[0]*r,t[1]=n[1]+a[1]*r,t[2]=n[2]+a[2]*r,t[3]=n[3]+a[3]*r,t[4]=n[4]+a[4]*r,t[5]=n[5]+a[5]*r,t[6]=n[6]+a[6]*r,t[7]=n[7]+a[7]*r,t[8]=n[8]+a[8]*r,t},exactEquals:function(t,n){return t[0]===n[0]&&t[1]===n[1]&&t[2]===n[2]&&t[3]===n[3]&&t[4]===n[4]&&t[5]===n[5]&&t[6]===n[6]&&t[7]===n[7]&&t[8]===n[8]},equals:function(t,n){var a=t[0],r=t[1],e=t[2],u=t[3],o=t[4],i=t[5],h=t[6],c=t[7],s=t[8],M=n[0],f=n[1],l=n[2],v=n[3],b=n[4],m=n[5],d=n[6],p=n[7],x=n[8];return Math.abs(a-M)<=1e-6*Math.max(1,Math.abs(a),Math.abs(M))&&Math.abs(r-f)<=1e-6*Math.max(1,Math.abs(r),Math.abs(f))&&Math.abs(e-l)<=1e-6*Math.max(1,Math.abs(e),Math.abs(l))&&Math.abs(u-v)<=1e-6*Math.max(1,Math.abs(u),Math.abs(v))&&Math.abs(o-b)<=1e-6*Math.max(1,Math.abs(o),Math.abs(b))&&Math.abs(i-m)<=1e-6*Math.max(1,Math.abs(i),Math.abs(m))&&Math.abs(h-d)<=1e-6*Math.max(1,Math.abs(h),Math.abs(d))&&Math.abs(c-p)<=1e-6*Math.max(1,Math.abs(c),Math.abs(p))&&Math.abs(s-x)<=1e-6*Math.max(1,Math.abs(s),Math.abs(x))},mul:p,sub:x});function q(t){return t[0]=1,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=1,t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=1,t[11]=0,t[12]=0,t[13]=0,t[14]=0,t[15]=1,t}function g(t,n,a){var r=n[0],e=n[1],u=n[2],o=n[3],i=n[4],h=n[5],c=n[6],s=n[7],M=n[8],f=n[9],l=n[10],v=n[11],b=n[12],m=n[13],d=n[14],p=n[15],x=a[0],y=a[1],q=a[2],g=a[3];return t[0]=x*r+y*i+q*M+g*b,t[1]=x*e+y*h+q*f+g*m,t[2]=x*u+y*c+q*l+g*d,t[3]=x*o+y*s+q*v+g*p,x=a[4],y=a[5],q=a[6],g=a[7],t[4]=x*r+y*i+q*M+g*b,t[5]=x*e+y*h+q*f+g*m,t[6]=x*u+y*c+q*l+g*d,t[7]=x*o+y*s+q*v+g*p,x=a[8],y=a[9],q=a[10],g=a[11],t[8]=x*r+y*i+q*M+g*b,t[9]=x*e+y*h+q*f+g*m,t[10]=x*u+y*c+q*l+g*d,t[11]=x*o+y*s+q*v+g*p,x=a[12],y=a[13],q=a[14],g=a[15],t[12]=x*r+y*i+q*M+g*b,t[13]=x*e+y*h+q*f+g*m,t[14]=x*u+y*c+q*l+g*d,t[15]=x*o+y*s+q*v+g*p,t}function _(t,n,a){var r=n[0],e=n[1],u=n[2],o=n[3],i=r+r,h=e+e,c=u+u,s=r*i,M=r*h,f=r*c,l=e*h,v=e*c,b=u*c,m=o*i,d=o*h,p=o*c;return t[0]=1-(l+b),t[1]=M+p,t[2]=f-d,t[3]=0,t[4]=M-p,t[5]=1-(s+b),t[6]=v+m,t[7]=0,t[8]=f+d,t[9]=v-m,t[10]=1-(s+l),t[11]=0,t[12]=a[0],t[13]=a[1],t[14]=a[2],t[15]=1,t}function A(t,n){return t[0]=n[12],t[1]=n[13],t[2]=n[14],t}function w(t,n){var a=n[0],r=n[1],e=n[2],u=n[4],o=n[5],i=n[6],h=n[8],c=n[9],s=n[10];return t[0]=Math.hypot(a,r,e),t[1]=Math.hypot(u,o,i),t[2]=Math.hypot(h,c,s),t}function R(t,a){var r=new n(3);w(r,a);var e=1/r[0],u=1/r[1],o=1/r[2],i=a[0]*e,h=a[1]*u,c=a[2]*o,s=a[4]*e,M=a[5]*u,f=a[6]*o,l=a[8]*e,v=a[9]*u,b=a[10]*o,m=i+M+b,d=0;return m>0?(d=2*Math.sqrt(m+1),t[3]=.25*d,t[0]=(f-v)/d,t[1]=(l-c)/d,t[2]=(h-s)/d):i>M&&i>b?(d=2*Math.sqrt(1+i-M-b),t[3]=(f-v)/d,t[0]=.25*d,t[1]=(h+s)/d,t[2]=(l+c)/d):M>b?(d=2*Math.sqrt(1+M-i-b),t[3]=(l-c)/d,t[0]=(h+s)/d,t[1]=.25*d,t[2]=(f+v)/d):(d=2*Math.sqrt(1+b-i-M),t[3]=(h-s)/d,t[0]=(l+c)/d,t[1]=(f+v)/d,t[2]=.25*d),t}function z(t,n,a){return t[0]=n[0]-a[0],t[1]=n[1]-a[1],t[2]=n[2]-a[2],t[3]=n[3]-a[3],t[4]=n[4]-a[4],t[5]=n[5]-a[5],t[6]=n[6]-a[6],t[7]=n[7]-a[7],t[8]=n[8]-a[8],t[9]=n[9]-a[9],t[10]=n[10]-a[10],t[11]=n[11]-a[11],t[12]=n[12]-a[12],t[13]=n[13]-a[13],t[14]=n[14]-a[14],t[15]=n[15]-a[15],t}var j=g,P=z,S=Object.freeze({__proto__:null,create:function(){var t=new n(16);return n!=Float32Array&&(t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[11]=0,t[12]=0,t[13]=0,t[14]=0),t[0]=1,t[5]=1,t[10]=1,t[15]=1,t},clone:function(t){var a=new n(16);return a[0]=t[0],a[1]=t[1],a[2]=t[2],a[3]=t[3],a[4]=t[4],a[5]=t[5],a[6]=t[6],a[7]=t[7],a[8]=t[8],a[9]=t[9],a[10]=t[10],a[11]=t[11],a[12]=t[12],a[13]=t[13],a[14]=t[14],a[15]=t[15],a},copy:function(t,n){return t[0]=n[0],t[1]=n[1],t[2]=n[2],t[3]=n[3],t[4]=n[4],t[5]=n[5],t[6]=n[6],t[7]=n[7],t[8]=n[8],t[9]=n[9],t[10]=n[10],t[11]=n[11],t[12]=n[12],t[13]=n[13],t[14]=n[14],t[15]=n[15],t},fromValues:function(t,a,r,e,u,o,i,h,c,s,M,f,l,v,b,m){var d=new n(16);return d[0]=t,d[1]=a,d[2]=r,d[3]=e,d[4]=u,d[5]=o,d[6]=i,d[7]=h,d[8]=c,d[9]=s,d[10]=M,d[11]=f,d[12]=l,d[13]=v,d[14]=b,d[15]=m,d},set:function(t,n,a,r,e,u,o,i,h,c,s,M,f,l,v,b,m){return t[0]=n,t[1]=a,t[2]=r,t[3]=e,t[4]=u,t[5]=o,t[6]=i,t[7]=h,t[8]=c,t[9]=s,t[10]=M,t[11]=f,t[12]=l,t[13]=v,t[14]=b,t[15]=m,t},identity:q,transpose:function(t,n){if(t===n){var a=n[1],r=n[2],e=n[3],u=n[6],o=n[7],i=n[11];t[1]=n[4],t[2]=n[8],t[3]=n[12],t[4]=a,t[6]=n[9],t[7]=n[13],t[8]=r,t[9]=u,t[11]=n[14],t[12]=e,t[13]=o,t[14]=i}else t[0]=n[0],t[1]=n[4],t[2]=n[8],t[3]=n[12],t[4]=n[1],t[5]=n[5],t[6]=n[9],t[7]=n[13],t[8]=n[2],t[9]=n[6],t[10]=n[10],t[11]=n[14],t[12]=n[3],t[13]=n[7],t[14]=n[11],t[15]=n[15];return t},invert:function(t,n){var a=n[0],r=n[1],e=n[2],u=n[3],o=n[4],i=n[5],h=n[6],c=n[7],s=n[8],M=n[9],f=n[10],l=n[11],v=n[12],b=n[13],m=n[14],d=n[15],p=a*i-r*o,x=a*h-e*o,y=a*c-u*o,q=r*h-e*i,g=r*c-u*i,_=e*c-u*h,A=s*b-M*v,w=s*m-f*v,R=s*d-l*v,z=M*m-f*b,j=M*d-l*b,P=f*d-l*m,S=p*P-x*j+y*z+q*R-g*w+_*A;return S?(S=1/S,t[0]=(i*P-h*j+c*z)*S,t[1]=(e*j-r*P-u*z)*S,t[2]=(b*_-m*g+d*q)*S,t[3]=(f*g-M*_-l*q)*S,t[4]=(h*R-o*P-c*w)*S,t[5]=(a*P-e*R+u*w)*S,t[6]=(m*y-v*_-d*x)*S,t[7]=(s*_-f*y+l*x)*S,t[8]=(o*j-i*R+c*A)*S,t[9]=(r*R-a*j-u*A)*S,t[10]=(v*g-b*y+d*p)*S,t[11]=(M*y-s*g-l*p)*S,t[12]=(i*w-o*z-h*A)*S,t[13]=(a*z-r*w+e*A)*S,t[14]=(b*x-v*q-m*p)*S,t[15]=(s*q-M*x+f*p)*S,t):null},adjoint:function(t,n){var a=n[0],r=n[1],e=n[2],u=n[3],o=n[4],i=n[5],h=n[6],c=n[7],s=n[8],M=n[9],f=n[10],l=n[11],v=n[12],b=n[13],m=n[14],d=n[15];return t[0]=i*(f*d-l*m)-M*(h*d-c*m)+b*(h*l-c*f),t[1]=-(r*(f*d-l*m)-M*(e*d-u*m)+b*(e*l-u*f)),t[2]=r*(h*d-c*m)-i*(e*d-u*m)+b*(e*c-u*h),t[3]=-(r*(h*l-c*f)-i*(e*l-u*f)+M*(e*c-u*h)),t[4]=-(o*(f*d-l*m)-s*(h*d-c*m)+v*(h*l-c*f)),t[5]=a*(f*d-l*m)-s*(e*d-u*m)+v*(e*l-u*f),t[6]=-(a*(h*d-c*m)-o*(e*d-u*m)+v*(e*c-u*h)),t[7]=a*(h*l-c*f)-o*(e*l-u*f)+s*(e*c-u*h),t[8]=o*(M*d-l*b)-s*(i*d-c*b)+v*(i*l-c*M),t[9]=-(a*(M*d-l*b)-s*(r*d-u*b)+v*(r*l-u*M)),t[10]=a*(i*d-c*b)-o*(r*d-u*b)+v*(r*c-u*i),t[11]=-(a*(i*l-c*M)-o*(r*l-u*M)+s*(r*c-u*i)),t[12]=-(o*(M*m-f*b)-s*(i*m-h*b)+v*(i*f-h*M)),t[13]=a*(M*m-f*b)-s*(r*m-e*b)+v*(r*f-e*M),t[14]=-(a*(i*m-h*b)-o*(r*m-e*b)+v*(r*h-e*i)),t[15]=a*(i*f-h*M)-o*(r*f-e*M)+s*(r*h-e*i),t},determinant:function(t){var n=t[0],a=t[1],r=t[2],e=t[3],u=t[4],o=t[5],i=t[6],h=t[7],c=t[8],s=t[9],M=t[10],f=t[11],l=t[12],v=t[13],b=t[14],m=t[15];return(n*o-a*u)*(M*m-f*b)-(n*i-r*u)*(s*m-f*v)+(n*h-e*u)*(s*b-M*v)+(a*i-r*o)*(c*m-f*l)-(a*h-e*o)*(c*b-M*l)+(r*h-e*i)*(c*v-s*l)},multiply:g,translate:function(t,n,a){var r,e,u,o,i,h,c,s,M,f,l,v,b=a[0],m=a[1],d=a[2];return n===t?(t[12]=n[0]*b+n[4]*m+n[8]*d+n[12],t[13]=n[1]*b+n[5]*m+n[9]*d+n[13],t[14]=n[2]*b+n[6]*m+n[10]*d+n[14],t[15]=n[3]*b+n[7]*m+n[11]*d+n[15]):(r=n[0],e=n[1],u=n[2],o=n[3],i=n[4],h=n[5],c=n[6],s=n[7],M=n[8],f=n[9],l=n[10],v=n[11],t[0]=r,t[1]=e,t[2]=u,t[3]=o,t[4]=i,t[5]=h,t[6]=c,t[7]=s,t[8]=M,t[9]=f,t[10]=l,t[11]=v,t[12]=r*b+i*m+M*d+n[12],t[13]=e*b+h*m+f*d+n[13],t[14]=u*b+c*m+l*d+n[14],t[15]=o*b+s*m+v*d+n[15]),t},scale:function(t,n,a){var r=a[0],e=a[1],u=a[2];return t[0]=n[0]*r,t[1]=n[1]*r,t[2]=n[2]*r,t[3]=n[3]*r,t[4]=n[4]*e,t[5]=n[5]*e,t[6]=n[6]*e,t[7]=n[7]*e,t[8]=n[8]*u,t[9]=n[9]*u,t[10]=n[10]*u,t[11]=n[11]*u,t[12]=n[12],t[13]=n[13],t[14]=n[14],t[15]=n[15],t},rotate:function(t,n,a,r){var e,u,o,i,h,c,s,M,f,l,v,b,m,d,p,x,y,q,g,_,A,w,R,z,j=r[0],P=r[1],S=r[2],E=Math.hypot(j,P,S);return E<1e-6?null:(j*=E=1/E,P*=E,S*=E,e=Math.sin(a),o=1-(u=Math.cos(a)),i=n[0],h=n[1],c=n[2],s=n[3],M=n[4],f=n[5],l=n[6],v=n[7],b=n[8],m=n[9],d=n[10],p=n[11],x=j*j*o+u,y=P*j*o+S*e,q=S*j*o-P*e,g=j*P*o-S*e,_=P*P*o+u,A=S*P*o+j*e,w=j*S*o+P*e,R=P*S*o-j*e,z=S*S*o+u,t[0]=i*x+M*y+b*q,t[1]=h*x+f*y+m*q,t[2]=c*x+l*y+d*q,t[3]=s*x+v*y+p*q,t[4]=i*g+M*_+b*A,t[5]=h*g+f*_+m*A,t[6]=c*g+l*_+d*A,t[7]=s*g+v*_+p*A,t[8]=i*w+M*R+b*z,t[9]=h*w+f*R+m*z,t[10]=c*w+l*R+d*z,t[11]=s*w+v*R+p*z,n!==t&&(t[12]=n[12],t[13]=n[13],t[14]=n[14],t[15]=n[15]),t)},rotateX:function(t,n,a){var r=Math.sin(a),e=Math.cos(a),u=n[4],o=n[5],i=n[6],h=n[7],c=n[8],s=n[9],M=n[10],f=n[11];return n!==t&&(t[0]=n[0],t[1]=n[1],t[2]=n[2],t[3]=n[3],t[12]=n[12],t[13]=n[13],t[14]=n[14],t[15]=n[15]),t[4]=u*e+c*r,t[5]=o*e+s*r,t[6]=i*e+M*r,t[7]=h*e+f*r,t[8]=c*e-u*r,t[9]=s*e-o*r,t[10]=M*e-i*r,t[11]=f*e-h*r,t},rotateY:function(t,n,a){var r=Math.sin(a),e=Math.cos(a),u=n[0],o=n[1],i=n[2],h=n[3],c=n[8],s=n[9],M=n[10],f=n[11];return n!==t&&(t[4]=n[4],t[5]=n[5],t[6]=n[6],t[7]=n[7],t[12]=n[12],t[13]=n[13],t[14]=n[14],t[15]=n[15]),t[0]=u*e-c*r,t[1]=o*e-s*r,t[2]=i*e-M*r,t[3]=h*e-f*r,t[8]=u*r+c*e,t[9]=o*r+s*e,t[10]=i*r+M*e,t[11]=h*r+f*e,t},rotateZ:function(t,n,a){var r=Math.sin(a),e=Math.cos(a),u=n[0],o=n[1],i=n[2],h=n[3],c=n[4],s=n[5],M=n[6],f=n[7];return n!==t&&(t[8]=n[8],t[9]=n[9],t[10]=n[10],t[11]=n[11],t[12]=n[12],t[13]=n[13],t[14]=n[14],t[15]=n[15]),t[0]=u*e+c*r,t[1]=o*e+s*r,t[2]=i*e+M*r,t[3]=h*e+f*r,t[4]=c*e-u*r,t[5]=s*e-o*r,t[6]=M*e-i*r,t[7]=f*e-h*r,t},fromTranslation:function(t,n){return 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i=1/(a-n),h=1/(e-r),c=1/(u-o);return t[0]=2*u*i,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=2*u*h,t[6]=0,t[7]=0,t[8]=(a+n)*i,t[9]=(e+r)*h,t[10]=(o+u)*c,t[11]=-1,t[12]=0,t[13]=0,t[14]=o*u*2*c,t[15]=0,t},perspective:function(t,n,a,r,e){var u,o=1/Math.tan(n/2);return t[0]=o/a,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=o,t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[11]=-1,t[12]=0,t[13]=0,t[15]=0,null!=e&&e!==1/0?(u=1/(r-e),t[10]=(e+r)*u,t[14]=2*e*r*u):(t[10]=-1,t[14]=-2*r),t},perspectiveFromFieldOfView:function(t,n,a,r){var e=Math.tan(n.upDegrees*Math.PI/180),u=Math.tan(n.downDegrees*Math.PI/180),o=Math.tan(n.leftDegrees*Math.PI/180),i=Math.tan(n.rightDegrees*Math.PI/180),h=2/(o+i),c=2/(e+u);return t[0]=h,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=c,t[6]=0,t[7]=0,t[8]=-(o-i)*h*.5,t[9]=(e-u)*c*.5,t[10]=r/(a-r),t[11]=-1,t[12]=0,t[13]=0,t[14]=r*a/(a-r),t[15]=0,t},ortho:function(t,n,a,r,e,u,o){var i=1/(n-a),h=1/(r-e),c=1/(u-o);return t[0]=-2*i,t[1]=0,t[2]=0,t[3]=0,t[4]=0,t[5]=-2*h,t[6]=0,t[7]=0,t[8]=0,t[9]=0,t[10]=2*c,t[11]=0,t[12]=(n+a)*i,t[13]=(e+r)*h,t[14]=(o+u)*c,t[15]=1,t},lookAt:function(t,n,a,r){var e,u,o,i,h,c,s,M,f,l,v=n[0],b=n[1],m=n[2],d=r[0],p=r[1],x=r[2],y=a[0],g=a[1],_=a[2];return Math.abs(v-y)<1e-6&&Math.abs(b-g)<1e-6&&Math.abs(m-_)<1e-6?q(t):(s=v-y,M=b-g,f=m-_,e=p*(f*=l=1/Math.hypot(s,M,f))-x*(M*=l),u=x*(s*=l)-d*f,o=d*M-p*s,(l=Math.hypot(e,u,o))?(e*=l=1/l,u*=l,o*=l):(e=0,u=0,o=0),i=M*o-f*u,h=f*e-s*o,c=s*u-M*e,(l=Math.hypot(i,h,c))?(i*=l=1/l,h*=l,c*=l):(i=0,h=0,c=0),t[0]=e,t[1]=i,t[2]=s,t[3]=0,t[4]=u,t[5]=h,t[6]=M,t[7]=0,t[8]=o,t[9]=c,t[10]=f,t[11]=0,t[12]=-(e*v+u*b+o*m),t[13]=-(i*v+h*b+c*m),t[14]=-(s*v+M*b+f*m),t[15]=1,t)},targetTo:function(t,n,a,r){var e=n[0],u=n[1],o=n[2],i=r[0],h=r[1],c=r[2],s=e-a[0],M=u-a[1],f=o-a[2],l=s*s+M*M+f*f;l>0&&(s*=l=1/Math.sqrt(l),M*=l,f*=l);var 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a=t[0],r=t[1],e=t[2],u=t[3],o=t[4],i=t[5],h=t[6],c=t[7],s=t[8],M=t[9],f=t[10],l=t[11],v=t[12],b=t[13],m=t[14],d=t[15],p=n[0],x=n[1],y=n[2],q=n[3],g=n[4],_=n[5],A=n[6],w=n[7],R=n[8],z=n[9],j=n[10],P=n[11],S=n[12],E=n[13],O=n[14],T=n[15];return 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