KazukyAkayashi/m3_lightmeter
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recalc ev on measure

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Vadim 2023-05-05 23:27:13 +02:00
parent 1a73cefa76
commit a595d5dcd4
1 changed files with 7 additions and 10 deletions
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17
lib/screens/metering/bloc_metering.dart
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@ -33,7 +33,7 @@ class MeteringBloc extends Bloc<MeteringEvent, MeteringState> {
late IsoValue _iso = _userPreferencesService.iso;
late NdValue _nd = _userPreferencesService.ndFilter;
late Film _film = _userPreferencesService.film;
double _ev = 0.0;
double _ev100 = 0.0;
bool _isMeteringInProgress = false;
MeteringBloc(
@ -90,14 +90,12 @@ class MeteringBloc extends Bloc<MeteringEvent, MeteringState> {
/// doesn't contain currently selected value
if (!event.equipmentProfileData.isoValues.any((v) => _iso.value == v.value)) {
_userPreferencesService.iso = event.equipmentProfileData.isoValues.first;
_ev = _ev + log2(event.equipmentProfileData.isoValues.first.value / _iso.value);
_iso = event.equipmentProfileData.isoValues.first;
}
/// The same for ND filter
if (!event.equipmentProfileData.ndValues.any((v) => _nd.value == v.value)) {
_userPreferencesService.ndFilter = event.equipmentProfileData.ndValues.first;
_ev = _ev - event.equipmentProfileData.ndValues.first.stopReduction + _nd.stopReduction;
_nd = event.equipmentProfileData.ndValues.first;
}
@ -122,14 +120,12 @@ class MeteringBloc extends Bloc<MeteringEvent, MeteringState> {
_film = Film.values.first;
}
_userPreferencesService.iso = event.isoValue;
_ev = _ev + log2(event.isoValue.value / _iso.value);
_iso = event.isoValue;
_emitMeasuredState(emit);
}
void _onNdChanged(NdChangedEvent event, Emitter emit) {
_userPreferencesService.ndFilter = event.ndValue;
_ev = _ev - event.ndValue.stopReduction + _nd.stopReduction;
_nd = event.ndValue;
_emitMeasuredState(emit);
}
@ -143,25 +139,26 @@ class MeteringBloc extends Bloc<MeteringEvent, MeteringState> {
void _onMeasured(MeasuredEvent event, Emitter emit) {
_meteringInteractor.responseVibration();
_ev = event.ev100 + log2(_iso.value / 100);
_ev100 = event.ev100;
_emitMeasuredState(emit);
}
void _emitMeasuredState(Emitter emit) {
final ev = _ev100 + log2(_iso.value / 100) - _nd.stopReduction;
emit(_isMeteringInProgress
? MeteringInProgressState(
ev: _ev,
ev: ev,
film: _film,
iso: _iso,
nd: _nd,
exposurePairs: _buildExposureValues(_ev),
exposurePairs: _buildExposureValues(ev),
)
: MeteringEndedState(
ev: _ev,
ev: ev,
film: _film,
iso: _iso,
nd: _nd,
exposurePairs: _buildExposureValues(_ev),
exposurePairs: _buildExposureValues(ev),
));
}