一款有意思的 Qt 飞行仪表控件

void MainWindow::timerEvent( QTimerEvent *event ) { / QMainWindow::timerEvent( event ); / float timeStep = m_time.restart(); m_realTime = m_realTime + timeStep / 1000.0f; float alpha = 0.0f; float beta = 0.0f; float roll = 0.0f; float pitch = 0.0f; float heading = 0.0f; float slipSkid = 0.0f; float turnRate = 0.0f; float devH = 0.0f; float devV = 0.0f; float airspeed = 0.0f; float altitude = 0.0f; float pressure = 28.0f; float climbRate = 0.0f; float machNo = 0.0f; float adf = 0.0f; float dme = 0.0f; if ( m_ui->pushButtonAuto->isChecked() ) { alpha = 20.0f * sin( m_realTime / 10.0f ); beta = 15.0f * sin( m_realTime / 10.0f ); roll = 180.0f * sin( m_realTime / 10.0f ); pitch = 90.0f * sin( m_realTime / 20.0f ); heading = 360.0f * sin( m_realTime / 40.0f ); slipSkid = 1.0f * sin( m_realTime / 10.0f ); turnRate = 7.0f * sin( m_realTime / 10.0f ); devH = 1.0f * sin( m_realTime / 20.0f ); devV = 1.0f * sin( m_realTime / 20.0f ); airspeed = 125.0f * sin( m_realTime / 40.0f ) + 125.0f; altitude = 9000.0f * sin( m_realTime / 40.0f ) + 9000.0f; pressure = 2.0f * sin( m_realTime / 20.0f ) + 30.0f; climbRate = 650.0f * sin( m_realTime / 20.0f ); machNo = airspeed / 650.0f; adf = -360.0f * sin( m_realTime / 50.0f ); dme = 99.0f * sin( m_realTime / 100.0f ); m_ui->spinBoxAlpha ->setValue( alpha ); m_ui->spinBoxBeta ->setValue( beta ); m_ui->spinBoxRoll ->setValue( roll ); m_ui->spinBoxPitch ->setValue( pitch ); m_ui->spinBoxSlip ->setValue( slipSkid ); m_ui->spinBoxTurn ->setValue( turnRate ); m_ui->spinBoxDevH ->setValue( devH ); m_ui->spinBoxDevV ->setValue( devV ); m_ui->spinBoxHead ->setValue( heading ); m_ui->spinBoxSpeed ->setValue( airspeed ); m_ui->spinBoxMach ->setValue( machNo ); m_ui->spinBoxAlt ->setValue( altitude ); m_ui->spinBoxPress ->setValue( pressure ); m_ui->spinBoxClimb ->setValue( climbRate ); m_ui->spinBoxADF ->setValue( adf ); m_ui->spinBoxDME ->setValue( dme ); } else { alpha = (float)m_ui->spinBoxAlpha ->value(); beta = (float)m_ui->spinBoxBeta ->value(); roll = (float)m_ui->spinBoxRoll ->value(); pitch = (float)m_ui->spinBoxPitch ->value(); heading = (float)m_ui->spinBoxHead ->value(); slipSkid = (float)m_ui->spinBoxSlip ->value(); turnRate = (float)m_ui->spinBoxTurn ->value(); devH = (float)m_ui->spinBoxDevH ->value(); devV = (float)m_ui->spinBoxDevV ->value(); airspeed = (float)m_ui->spinBoxSpeed ->value(); pressure = (float)m_ui->spinBoxPress ->value(); altitude = (float)m_ui->spinBoxAlt ->value(); climbRate = (float)m_ui->spinBoxClimb ->value(); machNo = (float)m_ui->spinBoxMach ->value(); adf = (float)m_ui->spinBoxADF ->value(); dme = (float)m_ui->spinBoxDME ->value(); } m_ui->widgetPFD->setFlightPathMarker ( alpha, beta ); m_ui->widgetPFD->setRoll ( roll ); m_ui->widgetPFD->setPitch ( pitch ); m_ui->widgetPFD->setSlipSkid ( slipSkid ); m_ui->widgetPFD->setTurnRate ( turnRate / 6.0f ); m_ui->widgetPFD->setDevH ( devH ); m_ui->widgetPFD->setDevV ( devV ); m_ui->widgetPFD->setHeading ( heading ); m_ui->widgetPFD->setAirspeed ( airspeed ); m_ui->widgetPFD->setMachNo ( machNo ); m_ui->widgetPFD->setAltitude ( altitude ); m_ui->widgetPFD->setPressure ( pressure ); m_ui->widgetPFD->setClimbRate ( climbRate / 100.0f ); m_ui->widgetNAV->setHeading ( heading ); m_ui->widgetNAV->setHeadingBug ( 0.0f ); m_ui->widgetNAV->setCourse ( 0.0f ); m_ui->widgetNAV->setBearing ( adf , true ); m_ui->widgetNAV->setDeviation ( devH , true ); m_ui->widgetNAV->setDistance ( dme , true ); m_ui->widgetSix->setRoll ( roll ); m_ui->widgetSix->setPitch ( pitch ); m_ui->widgetSix->setAltitude ( altitude ); m_ui->widgetSix->setPressure ( pressure ); m_ui->widgetSix->setAirspeed ( airspeed ); m_ui->widgetSix->setHeading ( heading ); m_ui->widgetSix->setSlipSkid ( slipSkid * 15.0f ); m_ui->widgetSix->setTurnRate ( turnRate ); m_ui->widgetSix->setClimbRate ( climbRate ); m_ui->widgetPFD->update(); m_ui->widgetNAV->update(); m_ui->widgetSix->update(); m_steps++; } 

类似的工业仪表控件网上还有很多。真心感觉Qt拯救了C++！