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33 lines
36 KiB
JavaScript
33 lines
36 KiB
JavaScript
4 years ago
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/*
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chroma.js - JavaScript library for color conversions
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Copyright (c) 2011-2017, Gregor Aisch
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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3. The name Gregor Aisch may not be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL GREGOR AISCH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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(function(){var a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,$,_,aa,ba,ca,da,ea,fa,ga,ha,ia,ja,ka,la,ma,na,oa,pa,qa,ra,sa,ta,ua,va,wa,xa,ya,za,Aa,Ba,Ca=[].slice;xa=function(){var a,b,c,d,e;for(a={},e="Boolean Number String Function Array Date RegExp Undefined Null".split(" "),d=0,b=e.length;d<b;d++)c=e[d],a["[object "+c+"]"]=c.toLowerCase();return function(b){var c;return c=Object.prototype.toString.call(b),a[c]||"object"}}(),U=function(a,b,c){return null==b&&(b=0),null==c&&(c=1),a<b&&(a=b),a>c&&(a=c),a},ya=function(a){return a.length>=3?[].slice.call(a):a[0]},u=function(a){var b,c;for(a._clipped=!1,a._unclipped=a.slice(0),b=c=0;c<3;b=++c)b<3?((a[b]<0||a[b]>255)&&(a._clipped=!0),a[b]<0&&(a[b]=0),a[b]>255&&(a[b]=255)):3===b&&(a[b]<0&&(a[b]=0),a[b]>1&&(a[b]=1));return a._clipped||delete a._unclipped,a},d=Math.PI,sa=Math.round,w=Math.cos,B=Math.floor,ba=Math.pow,V=Math.log,ua=Math.sin,va=Math.sqrt,n=Math.atan2,Y=Math.max,m=Math.abs,g=2*d,e=d/3,b=d/180,f=180/d,t=function(){return arguments[0]instanceof a?arguments[0]:function(a,b,c){c.prototype=a.prototype;var d=new c,e=a.apply(d,b);return Object(e)===e?e:d}(a,arguments,function(){})},t.default=t,l=[],"undefined"!=typeof module&&null!==module&&null!=module.exports&&(module.exports=t),"function"==typeof define&&define.amd?define([],function(){return t}):(ra="undefined"!=typeof exports&&null!==exports?exports:this,ra.chroma=t),t.version="1.3.5",k={},i=[],j=!1,a=function(){function a(){var a,b,c,d,e,f,g,h,l;for(f=this,b=[],h=0,d=arguments.length;h<d;h++)null!=(a=arguments[h])&&b.push(a);if(b.length>1&&(g=b[b.length-1]),null!=k[g])f._rgb=u(k[g](ya(b.slice(0,-1))));else{for(j||(i=i.sort(function(a,b){return b.p-a.p}),j=!0),l=0,e=i.length;l<e&&(c=i[l],!(g=c.test.apply(c,b)));l++);g&&(f._rgb=u(k[g].apply(k,b)))}null==f._rgb&&console.warn("unknown format: "+b),null==f._rgb&&(f._rgb=[0,0,0]),3===f._rgb.length&&f._rgb.push(1)}return a.prototype.toString=function(){return this.hex()},a.prototype.clone=function(){return t(me._rgb)},a}(),t._input=k,t.brewer=r={OrRd:["#fff7ec","#fee8c8","#fdd49e","#fdbb84","#fc8d59","#ef6548","#d7301f","#b30000","#7f0000"],PuBu:["#fff7fb","#ece7f2","#d0d1e6","#a6bddb","#74a9cf","#3690c0","#0570b0","#045a8d","#023858"],BuPu:["#f7fcfd","#e0ecf4","#bfd3e6","#9ebcda","#8c96c6","#8c6bb1","#88419d","#810f7c","#4d004b"],Oranges:["#fff5eb","#fee6ce","#fdd0a2","#fdae6b","#fd8d3c","#f16913","#d94801","#a63603","#7f2704"],BuGn:["#f7fcfd","#e5f5f9","#ccece6","#99d8c9","#66c2a4","#41ae76","#238b45","#006d2c","#00441b"],YlOrBr:["#ffffe5","#fff7bc","#fee391","#fec44f","#fe9929","#ec7014","#cc4c02","#993404","#662506"],YlGn:["#ffffe5","#f7fcb9","#d9f0a3","#addd8e","#78c679","#41ab5d","#238443","#006837","#004529"],Reds:["#fff5f0","#fee0d2","#fcbba1","#fc9272","#fb6a4a","#ef3b2c","#cb181d","#a50f15","#67000d"],RdPu:["#fff7f3","#fde0dd","#fcc5c0","#fa9fb5","#f768a1","#dd3497","#ae017e","#7a0177","#49006a"],Greens:["#f7fcf5","#e5f5e0","#c7e9c0","#a1d99b","#74c476","#41ab5d","#238b45","#006d2c","#00441b"],YlGnBu:["#ffffd9","#edf8b1","#c7e9b4","#7fcdbb","#41b6c4","#1d91c0","#225ea8","#253494","#081d58"],Purples:["#fcfbfd","#efedf5","#dadaeb","#bcbddc","#9e9ac8","#807dba","#6a51a3","#54278f","#3f007d"],GnBu:["#f7fcf0","#e0f3db","#ccebc5","#a8ddb5","#7bccc4","#4eb3d3","#2b8cbe","#0868ac","#084081"],Greys:["#ffffff","#f0f0f0","#d9d9d9","#bdbdbd","#969696","#737373","#525252","#252525","#000000"],YlOrRd:["#ffffcc","#ffeda0","#fed976","#feb24c","#fd8d3c","#fc4e2a","#e31a1c","#bd0026","#800026"],PuRd:["#f7f4f9","#e7e1ef","#d4b9da","#c994c7","#df65b0","#e7298a","#ce1256","#980043","#67001f"],Blues:["#f7fbff","#deebf7","#c6dbef","#9ecae1","#6baed6","#4292c6","#2171b5","#08519c","#08306b"],PuBuGn:["#fff7fb","#ece2f0","#d0d1e6","#a6bddb","#67a9cf","#3690c0","#02818a","#016c59","#014636"],Viridis:["#440154","#482777","#3f4a8a","#31678e","#26838f","#1f9d8a","#6cce5a","#b6de2b","#fee825"],Spectral:["#9e0142","#d53e4f","#f46d43","#fdae61","#fee08b","#ffffbf","#e6f598","#abdda4","#66c2a5","#3288bd","#5e4fa2"],RdYlGn:["#a50026","#d7
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;return h.domain=[h.min,h.max],h.limits=function(a,b){return t.limits(h,a,b)},h},t.limits=function(a,b,c){var d,e,f,g,h,i,j,k,l,n,o,p,q,r,s,u,v,w,x,y,z,A,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,W,X,Z,$,_,aa,ca,da,ea,fa,ga,ha,ia,ja;if(null==b&&(b="equal"),null==c&&(c=7),"array"===xa(a)&&(a=t.analyze(a)),E=a.min,Y=a.max,a.sum,ia=a.values.sort(function(a,b){return a-b}),1===c)return[E,Y];if(C=[],"c"===b.substr(0,1)&&(C.push(E),C.push(Y)),"e"===b.substr(0,1)){for(C.push(E),y=K=1,O=c-1;1<=O?K<=O:K>=O;y=1<=O?++K:--K)C.push(E+y/c*(Y-E));C.push(Y)}else if("l"===b.substr(0,1)){if(E<=0)throw"Logarithmic scales are only possible for values > 0";for(F=Math.LOG10E*V(E),D=Math.LOG10E*V(Y),C.push(E),y=ja=1,P=c-1;1<=P?ja<=P:ja>=P;y=1<=P?++ja:--ja)C.push(ba(10,F+y/c*(D-F)));C.push(Y)}else if("q"===b.substr(0,1)){for(C.push(E),y=d=1,W=c-1;1<=W?d<=W:d>=W;y=1<=W?++d:--d)L=(ia.length-1)*y/c,M=B(L),M===L?C.push(ia[M]):(N=L-M,C.push(ia[M]*(1-N)+ia[M+1]*N));C.push(Y)}else if("k"===b.substr(0,1)){for(H=ia.length,r=new Array(H),w=new Array(c),ea=!0,I=0,u=null,u=[],u.push(E),y=e=1,X=c-1;1<=X?e<=X:e>=X;y=1<=X?++e:--e)u.push(E+y/c*(Y-E));for(u.push(Y);ea;){for(z=f=0,Z=c-1;0<=Z?f<=Z:f>=Z;z=0<=Z?++f:--f)w[z]=0;for(y=g=0,$=H-1;0<=$?g<=$:g>=$;y=0<=$?++g:--g){for(ha=ia[y],G=Number.MAX_VALUE,z=h=0,_=c-1;0<=_?h<=_:h>=_;z=0<=_?++h:--h)(x=m(u[z]-ha))<G&&(G=x,s=z);w[s]++,r[y]=s}for(J=new Array(c),z=i=0,aa=c-1;0<=aa?i<=aa:i>=aa;z=0<=aa?++i:--i)J[z]=null;for(y=j=0,ca=H-1;0<=ca?j<=ca:j>=ca;y=0<=ca?++j:--j)v=r[y],null===J[v]?J[v]=ia[y]:J[v]+=ia[y];for(z=k=0,da=c-1;0<=da?k<=da:k>=da;z=0<=da?++k:--k)J[z]*=1/w[z];for(ea=!1,z=l=0,Q=c-1;0<=Q?l<=Q:l>=Q;z=0<=Q?++l:--l)if(J[z]!==u[y]){ea=!0;break}u=J,I++,I>200&&(ea=!1)}for(A={},z=n=0,R=c-1;0<=R?n<=R:n>=R;z=0<=R?++n:--n)A[z]=[];for(y=o=0,S=H-1;0<=S?o<=S:o>=S;y=0<=S?++o:--o)v=r[y],A[v].push(ia[y]);for(fa=[],z=p=0,T=c-1;0<=T?p<=T:p>=T;z=0<=T?++p:--p)fa.push(A[z][0]),fa.push(A[z][A[z].length-1]);for(fa=fa.sort(function(a,b){return a-b}),C.push(fa[0]),y=q=1,U=fa.length-1;q<=U;y=q+=2)ga=fa[y],isNaN(ga)||-1!==C.indexOf(ga)||C.push(ga)}return C},E=function(a,b,c){var d,f,h,i;return d=ya(arguments),a=d[0],b=d[1],c=d[2],isNaN(a)&&(a=0),a/=360,a<1/3?(f=(1-b)/3,i=(1+b*w(g*a)/w(e-g*a))/3,h=1-(f+i)):a<2/3?(a-=1/3,i=(1-b)/3,h=(1+b*w(g*a)/w(e-g*a))/3,f=1-(i+h)):(a-=2/3,h=(1-b)/3,f=(1+b*w(g*a)/w(e-g*a))/3,i=1-(h+f)),i=U(c*i*3),h=U(c*h*3),f=U(c*f*3),[255*i,255*h,255*f,d.length>3?d[3]:1]},ga=function(){var a,b,c,d,e,f,h,i;return h=ya(arguments),f=h[0],b=h[1],a=h[2],g=2*Math.PI,f/=255,b/=255,a/=255,e=Math.min(f,b,a),d=(f+b+a)/3,i=1-e/d,0===i?c=0:(c=(f-b+(f-a))/2,c/=Math.sqrt((f-b)*(f-b)+(f-a)*(b-a)),c=Math.acos(c),a>b&&(c=g-c),c/=g),[360*c,i,d]},t.hsi=function(){return function(a,b,c){c.prototype=a.prototype;var d=new c,e=a.apply(d,b);return Object(e)===e?e:d}(a,Ca.call(arguments).concat(["hsi"]),function(){})},k.hsi=E,a.prototype.hsi=function(){return ga(this._rgb)},J=function(a,b,c,d){var e,f,g,h,i,j,k,l,m,n,o,p;return"hsl"===d?(o=a.hsl(),p=b.hsl()):"hsv"===d?(o=a.hsv(),p=b.hsv()):"hcg"===d?(o=a.hcg(),p=b.hcg()):"hsi"===d?(o=a.hsi(),p=b.hsi()):"lch"!==d&&"hcl"!==d||(d="hcl",o=a.hcl(),p=b.hcl()),"h"===d.substr(0,1)&&(g=o[0],m=o[1],j=o[2],h=p[0],n=p[1],k=p[2]),isNaN(g)||isNaN(h)?isNaN(g)?isNaN(h)?f=Number.NaN:(f=h,1!==j&&0!==j||"hsv"===d||(l=n)):(f=g,1!==k&&0!==k||"hsv"===d||(l=m)):(e=h>g&&h-g>180?h-(g+360):h<g&&g-h>180?h+360-g:h-g,f=g+c*e),null==l&&(l=m+c*(n-m)),i=j+c*(k-j),t[d](f,l,i)},l=l.concat(function(){var a,b,c,d;for(c=["hsv","hsl","hsi","hcl","lch","hcg"],d=[],b=0,a=c.length;b<a;b++)X=c[b],d.push([X,J]);return d}()),M=function(a,b,c,d){var e,f;return e=a.num(),f=b.num(),t.num(e+(f-e)*c,"num")},l.push(["num",M]),K=function(b,c,d,e){var f,g;return f=b.lab(),g=c.lab(),new a(f[0]+d*(g[0]-f[0]),f[1]+d*(g[1]-f[1]),f[2]+d*(g[2]-f[2]),e)},l.push(["lab",K])}).call(this);
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