https://filmwelt-herne.de/theme/solar/js/color-contrast.js

1(()=>{"use strict";function e(e,t){let r=e.length;Array.isArray(e[0])||(e=[e]),Array.isArray(t[0])||(t=t.map((e=>[e])));let n=t[0].length,a=t[0].map(((e,r)=>t.map((e=>e[r])))),o=e.map((e=>a.map((t=>{let r=0;if(!Array.isArray(e)){for(let n of t)r+=e*n;return r}for(let n=0;n<e.length;n++)r+=e[n]*(t[n]||0);return r}))));return 1===r&&(o=o[0]),1===n?o.map((e=>e[0])):o}function t(e){return"string"===r(e)}function r(e){return(Object.prototype.toString.call(e).match(/^\[object\s+(.*?)\]$/)[1]||"").toLowerCase()}function n(e,{precision:t,unit:r}){return a(e)?"none":s(e,t)+(r??"")}function a(e){return Number.isNaN(e)||e instanceof Number&&e?.none}function o(e){return a(e)?0:e}function s(e,t){if(0===e)return 0;let r=~~e,n=0;r&&t&&(n=1+~~Math.log10(Math.abs(r)));const a=10**(t-n);return Math.floor(e*a+.5)/a}const i={deg:1,grad:.9,rad:180/Math.PI,turn:360};function c(e){if(!e)return;e=e.trim();const t=/^-?[\d.]+$/,r=/%|deg|g?rad|turn$/,n=/\/?\s*(none|[-\w.]+(?:%|deg|g?rad|turn)?)/g;let a=e.match(/^([a-z]+)\((.+?)\)$/i);if(a){let e=[];return a[2].replace(n,((n,a)=>{let o=a.match(r),s=a;if(o){let e=o[0],t=s.slice(0,-e.length);"%"===e?(s=new Number(t/100),s.type="<percentage>"):(s=new Number(t*i[e]),s.type="<angle>",s.unit=e)}else t.test(s)?(s=new Number(s),s.type="<number>"):"none"===s&&(s=new Number(NaN),s.none=!0);n.startsWith("/")&&(s=s instanceof Number?s:new Number(s),s.alpha=!0),"object"==typeof s&&s instanceof Number&&(s.raw=a),e.push(s)})),{name:a[1].toLowerCase(),rawName:a[1],rawArgs:a[2],args:e}}}function l(e){return e[e.length-1]}function u(e,t,r){return isNaN(e)?t:isNaN(t)?e:e+(t-e)*r}function h(e,t,r){return(r-e)/(t-e)}function f(e,t,r){return u(t[0],t[1],h(e[0],e[1],r))}function d(e){return e.map((e=>e.split("|").map((e=>{let t=(e=e.trim()).match(/^(<[a-z]+>)\[(-?[.\d]+),\s*(-?[.\d]+)\]?$/);if(t){let e=new String(t[1]);return e.range=[+t[2],+t[3]],e}return e}))))}function m(e,t,r){return Math.max(Math.min(r,t),e)}function p(e,t){return Math.sign(e)===Math.sign(t)?e:-e}function g(e,t){return p(Math.abs(e)**t,e)}function b(e,t){return 0===t?0:e/t}function M(e,t,r=0,n=e.length){for(;r<n;){const a=r+n>>1;e[a]<t?r=a+1:n=a}return r}var w=Object.freeze({__proto__:null,bisectLeft:M,clamp:m,copySign:p,interpolate:u,interpolateInv:h,isNone:a,isString:t,last:l,mapRange:f,multiplyMatrices:e,parseCoordGrammar:d,parseFunction:c,serializeNumber:n,skipNone:o,spow:g,toPrecision:s,type:r,zdiv:b});const y=new class{add(e,t,r){if("string"==typeof arguments[0])(Array.isArray(e)?e:[e]).forEach((function(e){this[e]=this[e]||[],t&&this[e][r?"unshift":"push"](t)}),this);else for(var e in arguments[0])this.add(e,arguments[0][e],arguments[1])}run(e,t){this[e]=this[e]||[],this[e].forEach((function(e){e.call(t&&t.context?t.context:t,t)}))}};var v={gamut_mapping:"css",precision:5,deltaE:"76",verbose:"test"!==globalThis?.process?.env?.NODE_ENV?.toLowerCase(),warn:function(e){this.verbose&&globalThis?.console?.warn?.(e)}};const C={D50:[.3457/.3585,1,.2958/.3585],D65:[.3127/.329,1,.3583/.329]};function R(e){return Array.isArray(e)?e:C[e]}function _(t,r,n,a={}){if(t=R(t),r=R(r),!t||!r)throw new TypeError(`Missing white point to convert ${t?"":"from"}${t||r?"":"/"}${r?"":"to"}`);if(t===r)return n;let o={W1:t,W2:r,XYZ:n,options:a};if(y.run("chromatic-adaptation-start",o),o.M||(o.W1===C.D65&&o.W2===C.D50?o.M=[[1.0479297925449969,.022946870601609652,-.05019226628920524],[.02962780877005599,.9904344267538799,-.017073799063418826],[-.009243040646204504,.015055191490298152,.7518742814281371]]:o.W1===C.D50&&o.W2===C.D65&&(o.M=[[.955473421488075,-.02309845494876471,.06325924320057072],[-.0283697093338637,1.0099953980813041,.021041441191917323],[.012314014864481998,-.020507649298898964,1.330365926242124]])),y.run("chromatic-adaptation-end",o),o.M)return e(o.M,o.XYZ);throw new TypeError("Only Bradford CAT with white points D50 and D65 supported for now.")}const B=new Set(["<number>","<percentage>","<angle>"]);function N(e,t,r,n){let a=Object.entries(e.coords).map((([e,a],o)=>{let s,i=t.coordGrammar[o],c=n[o],l=c?.type;if(s=c.none?i.find((e=>B.has(e))):i.find((e=>e==l)),!s){let t=a.name||e;throw new TypeError(`${l??c.raw} not allowed for ${t} in ${r}()`)}let u=s.range;"<percentage>"===l&&(u||=[0,1]);let h=a.range||a.refRange;return u&&h&&(n[o]=f(u,h,n[o])),s}));return a}function S(e,{meta:t}={}){let r={str:String(e)?.trim()};if(y.run("parse-start",r),r.color)return r.color;if(r.parsed=c(r.str),r.parsed){let e=r.parsed.name;if("color"===e){let e=r.parsed.args.shift(),n=e.startsWith("--")?e.substring(2):`--${e}`,a=[e,n],o=r.parsed.rawArgs.indexOf("/")>0?r.parsed.args.pop():1;for(let n of k.all){let s=n.getFormat("color");

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