import type { IRandom } from "@thi.ng/random" ; import { pickRandom } from "@thi.ng/random/pick-random" ; import { SYSTEM } from "@thi.ng/random/system" ; import { weightedRandom } from "@thi.ng/random/weighted-random" ; import { analog } from "./analog.js" ; import type { TypedColor } from "./api.js" ; export interface VariationOpts { defaultValue num : number ; /**
     * Weights (given in same order as colors) for randomly selecting colors. By
     * default colors will be chosen with uniform distribution.
     */ weights : number [ ] ; defaultValue delta : number ; defaultValue rnd : IRandom ; } export function * variations < T extends TypedColor < any > > ( src , opts ? ) { opts = { rnd : SYSTEM , delta : 0.05 , num : Infinity , ... opts } ; const pick = opts . weights ? weightedRandom ( src , opts . weights , opts . rnd ) : ( ) => pickRandom ( src , opts ! . rnd ) ; for ( let i = opts . num ! ; i -- > 0 ; ) { const col = pick ( ) ; yield < T > analog ( col . empty ( ) , col , opts . delta ! , opts . rnd ) ; } }