init method
Sets up the cache, returns true if a change of cache was required.
@param set @return
Implementation
bool init(ILineDataSet set) {
int size = set.getCircleColorCount();
bool changeRequired = false;
if (_circleBitmaps == null) {
_circleBitmaps = List.filled(size, null, growable: false);
changeRequired = true;
} else if (_circleBitmaps!.length != size) {
_circleBitmaps = List.filled(size, null, growable: false);
changeRequired = true;
}
return changeRequired;
}