findValue<V> method
Find the value which matches current size from map
Implementation
V findValue<V>(Map<double, V> map) {
final entries = map.entries.toList()
..sort(((a, b) => b.key.compareTo(a.key)));
assert(entries.any((element) => element.key == 0));
return entries.firstWhere((element) => width >= element.key).value;
}