Public
Edited
May 16, 2023
Importers
1 star
// Every ratio between every whole number 1...32
quartermaster(plusOne(32))
// Every ratio within a given array
// only keeps numbers
quartermaster([2, 3, 5, 23, 59, "foo", 33, [99, 100]])
// Quartermaster
// rations out any given array of numbers
// requires: factorial, round, ratioToCents, ratioToSavarts
// inputs an array of numbers
// outputs an array of objects, 5 properties
quartermaster = (arr) => {
var rations = []
var unclean = arr
var denominator = unclean.filter(x => typeof x === 'number')
var numerator = unclean.filter(x => typeof x === 'number')
var ratio = []
var fraction = []
var cents = []
var savarts = []
var centsStd = []
var combined = []
var obj = {Ratio: "", Fraction: "", Cents: "", CentsStd: "", RatioStd: "", Savarts: "", Viz: [], Notes: ""}
var uniqueFractions = []
var uniqueCentsStd = []
var counter = 0
var output = Array(counter)
function modulo (a) {return ((a%1200)+1200)%1200} // cents[i]%1200 gives remainder, we want modulo
// creates a list of unique fractions and their text representations
for (var n=0; n < numerator.length; n++){
for (var d=0; d < denominator.length; d++){
// creates array with the division of n by d
fraction.push(round(numerator[n]/denominator[d],3))
// Text ratio concatenation
var textfrac = numerator[n]+"/"+denominator[d]
ratio.push(textfrac)
}
}
// unit conversions
cents = fraction.map(ratioToCents)
savarts = fraction.map(ratioToSavarts)
centsStd = cents.map(modulo) // ensure all values are within 0-1200 range
// combine each array using only unique values for fraction
for (var i=0; i < fraction.length; i++){
// skip repeated values
if (Object.values(uniqueFractions).includes(fraction[i])) {continue} // check whether fraction is repeated
if (Object.values(uniqueCentsStd).includes(centsStd[i])) {continue} // check whether centsStd is repeated
if (fraction[i]<1) {continue} // skip fractions smaller than 1:1
// skip fractions over 1 if needed
//if (fraction[i] > 1) { continue }
// for new unique values, adds properties
var key = ratio[i]
combined[key] = Object.create(obj)
combined[key].Ratio = ratio[i]
combined[key].Fraction = fraction[i]
combined[key].Cents = Math.abs(round(cents[i],3))
combined[key].Savarts = Math.abs(round(savarts[i],3))
//combined[key].Cents = Math.abs(round(ratioToCents(combined[key].Fraction),3))
if (combined[key].Cents > 1200) {continue}; // skip ratios with cents over 1200
//combined[key].Savarts = Math.abs(round(ratioToSavarts(combined[key].Fraction),3))
combined[key].CentsStd = round(centsStd[i],3)
if (combined[key].CentsStd < 1) {continue}; // skip fractions where mod is 0
//combined[key].RatioStd = Math.floor(cents[i]/1200) + " + " +
combined[key].Viz = [{Blue: centsStd[i], Pink: 1200-centsStd[i]}]
uniqueFractions.push(fraction[i])
uniqueCentsStd.push(centsStd[i])
counter++
output.push(combined[key])
}
return output
}
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