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Qt Quick Ultralite Automotive Cluster Demo

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#include "simulation/speedlimits.h" #include "Automotive/Units.h" #include "mathutils.h" #include <etl/array.h> using namespace Automotive; namespace { const etl::array<SpeedLimitValues::Limit, SpeedLimitValues::LimitsCount> LIMITS = { SpeedLimitValues::None, SpeedLimitValues::VerySlow, SpeedLimitValues::Slow, SpeedLimitValues::Medium, SpeedLimitValues::Fast, SpeedLimitValues::VeryFast, }; } namespace Simulation { SpeedLimits::SpeedLimits(uint32_t updatePeriod, uint32_t udpatePeriodVariation) : _updatePeriod(updatePeriod) , _udpatePeriodVariation(udpatePeriodVariation) , _timer(0) , _timeToChange(0) , _limit(SpeedLimitValues::None) { reset(); } void SpeedLimits::update(uint32_t tick) { _timer += tick; if (_timer > _timeToChange) { changeSpeedLimit(); const int32_t variation = _udpatePeriodVariation > _updatePeriod ? _updatePeriod : _udpatePeriodVariation; calculateNewChangeTime(randomize(-variation, variation)); _timer = 0; } } void SpeedLimits::reset(SpeedLimitValues::Limit speedLimit) { _timer = 0; _limit = speedLimit; calculateNewChangeTime(0); /* No variation after reset */ } float SpeedLimits::getCurrentSpeedLimitInKmh() const { return Units::instance().longDistanceUnitToKilometers(_limit); } SpeedLimitValues::Limit SpeedLimits::getCurrentSpeedLimit() const { return _limit; } void SpeedLimits::changeSpeedLimit() { const int idx = randomChoice(LIMITS.size() - 1); _limit = LIMITS[idx]; } void SpeedLimits::calculateNewChangeTime(int32_t variation) { _timeToChange = _updatePeriod + variation; } } // namespace Simulation