helperFunctions.js

createDistribution = (array, weights, size) => {
    const distribution = [];
    const sum = weights.reduce((a, b) => a + b);
    const quant = size / sum;
    for (let i = 0; i < array.length; ++i) {
        const limit = quant * weights[i];
        for (let j = 0; j < limit; ++j) {
            distribution.push(i);
        }
    }
    return distribution;
};

randomIndex = (distribution) => {
    const index = Math.floor(distribution.length * Math.random());  // random index
    return distribution[index];  
};	

convertScoreToInteger = (limit, score) => {
    if (score === 0) {
        return -limit;
    }
    else {
        const b = parseInt((limit - score)/limit);
    return parseInt(score + (limit * b));
    }   
}

HSVtoRGB = function(h, s, v) {
    let r, g, b;

    let i = Math.floor(h * 6);
    let f = h * 6 - i;
    let p = v * (1 - s);
    let q = v * (1 - f * s);
    let t = v * (1 - (1 - f) * s);

    switch(i % 6) {
        case 0: r = v, g = t, b = p; break;
        case 1: r = q, g = v, b = p; break;
        case 2: r = p, g = v, b = t; break;
        case 3: r = p, g = q, b = v; break;
        case 4: r = t, g = p, b = v; break;
        case 5: r = v, g = p, b = q; break;
    }

    return [r * 255, g * 255, b * 255];
}

function hexToRGB(hex) {
    return ['0x' + hex[1] + hex[2] | 0, '0x' + hex[3] + hex[4] | 0, '0x' + hex[5] + hex[6] | 0];
  }

randomFloat = function(min, max) {
    return parseFloat((Math.random() * (max - min) + min));
}