C

Qt Quick Ultralite Automotive Cluster Demo

/****************************************************************************** ** ** Copyright (C) 2020 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the Qt Quick Ultralite module. ** ** $QT_BEGIN_LICENSE:COMM$ ** ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms ** and conditions see http://www.qt.io/terms-conditions. For further ** information use the contact form at http://www.qt.io/contact-us. ** ** $QT_END_LICENSE$ ** ******************************************************************************/
#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 updatePeriodVariation) : _updatePeriod(updatePeriod) , _updatePeriodVariation(updatePeriodVariation) , _timer(0) , _timeToChange(0) , _limit(SpeedLimitValues::None) { reset(); } void SpeedLimits::update(uint32_t tick) { _timer += tick; if (_timer > _timeToChange) { changeSpeedLimit(); const int32_t variation = _updatePeriodVariation > _updatePeriod ? _updatePeriod : _updatePeriodVariation; 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