linearTicks function

List<double> linearTicks(double start, double stop, [ int count = 10 ])

Generates tick values for a linear scale.

Implementation

List<double> linearTicks(double start, double stop, [int count = 10]) {
  if (count <= 0) return [];

  final reverse = stop < start;
  if (reverse) {
    final temp = start;
    start = stop;
    stop = temp;
  }

  final step = tickStep(start, stop, count);
  if (step == 0 || !step.isFinite) return [];

  final ticks = <double>[];

  if (step > 0) {
    final r0 = (start / step).ceil();
    final r1 = (stop / step).floor();
    final n = r1 - r0 + 1;

    for (int i = 0; i < n; i++) {
      ticks.add((r0 + i) * step);
    }
  } else {
    final r0 = (start * step).floor();
    final r1 = (stop * step).ceil();
    final n = r0 - r1 + 1;

    for (int i = 0; i < n; i++) {
      ticks.add((r0 - i) / step);
    }
  }

  return reverse ? ticks.reversed.toList() : ticks;
}