domainValue method

@override num domainValue(covariant num rangeData)

Implementation

@override
num domainValue(covariant num rangeData) {
  num diff = domain.last - domain.first;
  num diff2 = range.last - range.first;
  double p = (rangeData - range.first) / diff2;
  return domain.first + p * diff;
}