function generateTicks$1()

in Hands-on lab/lab-files/starter-project/NorthwindMVC/wwwroot/lib/Chart.js/chart.js [11861:11944]

• 84 lines of code
• 30 McCabe index (conditional complexity)

function generateTicks$1(generationOptions, dataRange) {
  const ticks = [];
  const MIN_SPACING = 1e-14;
  const {bounds, step, min, max, precision, count, maxTicks, maxDigits, includeBounds} = generationOptions;
  const unit = step || 1;
  const maxSpaces = maxTicks - 1;
  const {min: rmin, max: rmax} = dataRange;
  const minDefined = !isNullOrUndef(min);
  const maxDefined = !isNullOrUndef(max);
  const countDefined = !isNullOrUndef(count);
  const minSpacing = (rmax - rmin) / (maxDigits + 1);
  let spacing = niceNum((rmax - rmin) / maxSpaces / unit) * unit;
  let factor, niceMin, niceMax, numSpaces;
  if (spacing < MIN_SPACING && !minDefined && !maxDefined) {
    return [{value: rmin}, {value: rmax}];
  }
  numSpaces = Math.ceil(rmax / spacing) - Math.floor(rmin / spacing);
  if (numSpaces > maxSpaces) {
    spacing = niceNum(numSpaces * spacing / maxSpaces / unit) * unit;
  }
  if (!isNullOrUndef(precision)) {
    factor = Math.pow(10, precision);
    spacing = Math.ceil(spacing * factor) / factor;
  }
  if (bounds === 'ticks') {
    niceMin = Math.floor(rmin / spacing) * spacing;
    niceMax = Math.ceil(rmax / spacing) * spacing;
  } else {
    niceMin = rmin;
    niceMax = rmax;
  }
  if (minDefined && maxDefined && step && almostWhole((max - min) / step, spacing / 1000)) {
    numSpaces = Math.round(Math.min((max - min) / spacing, maxTicks));
    spacing = (max - min) / numSpaces;
    niceMin = min;
    niceMax = max;
  } else if (countDefined) {
    niceMin = minDefined ? min : niceMin;
    niceMax = maxDefined ? max : niceMax;
    numSpaces = count - 1;
    spacing = (niceMax - niceMin) / numSpaces;
  } else {
    numSpaces = (niceMax - niceMin) / spacing;
    if (almostEquals(numSpaces, Math.round(numSpaces), spacing / 1000)) {
      numSpaces = Math.round(numSpaces);
    } else {
      numSpaces = Math.ceil(numSpaces);
    }
  }
  const decimalPlaces = Math.max(
    _decimalPlaces(spacing),
    _decimalPlaces(niceMin)
  );
  factor = Math.pow(10, isNullOrUndef(precision) ? decimalPlaces : precision);
  niceMin = Math.round(niceMin * factor) / factor;
  niceMax = Math.round(niceMax * factor) / factor;
  let j = 0;
  if (minDefined) {
    if (includeBounds && niceMin !== min) {
      ticks.push({value: min});
      if (niceMin < min) {
        j++;
      }
      if (almostEquals(Math.round((niceMin + j * spacing) * factor) / factor, min, relativeLabelSize(min, minSpacing, generationOptions))) {
        j++;
      }
    } else if (niceMin < min) {
      j++;
    }
  }
  for (; j < numSpaces; ++j) {
    ticks.push({value: Math.round((niceMin + j * spacing) * factor) / factor});
  }
  if (maxDefined && includeBounds && niceMax !== max) {
    if (almostEquals(ticks[ticks.length - 1].value, max, relativeLabelSize(max, minSpacing, generationOptions))) {
      ticks[ticks.length - 1].value = max;
    } else {
      ticks.push({value: max});
    }
  } else if (!maxDefined || niceMax === max) {
    ticks.push({value: niceMax});
  }
  return ticks;
}