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ced903638c
sdrangel/plugins/feature/startracker/startrackergui.cpp
Jon Beniston ced903638c Star Tracker updates 
Plot elevation and azimuth on line charts.
Add polar chart for elevation and azimuth.
Use wrapping time widget to more easily scroll through time.
2021-02-26 20:33:39 +00:00

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53 KiB
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///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2021 Jon Beniston, M7RCE //
// Copyright (C) 2020 Edouard Griffiths, F4EXB //
// //
// This program is free software; you can redistribute it and/or modify //
// it under the terms of the GNU General Public License as published by //
// the Free Software Foundation as version 3 of the License, or //
// (at your option) any later version. //
// //
// This program is distributed in the hope that it will be useful, //
// but WITHOUT ANY WARRANTY; without even the implied warranty of //
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
// GNU General Public License V3 for more details. //
// //
// You should have received a copy of the GNU General Public License //
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
///////////////////////////////////////////////////////////////////////////////////
#include <cmath>
#include <algorithm>
#include <QMessageBox>
#include <QLineEdit>
#include <QRegExp>
#include <QNetworkAccessManager>
#include <QNetworkReply>
#include <QtCharts/QChartView>
#include <QtCharts/QLineSeries>
#include <QtCharts/QDateTimeAxis>
#include <QtCharts/QValueAxis>
#include "feature/featureuiset.h"
#include "feature/featurewebapiutils.h"
#include "gui/basicfeaturesettingsdialog.h"
#include "mainwindow.h"
#include "device/deviceuiset.h"
#include "util/units.h"
#include "util/astronomy.h"
#include "ui_startrackergui.h"
#include "startracker.h"
#include "startrackergui.h"
#include "startrackerreport.h"
#include "startrackersettingsdialog.h"
// Linear extrapolation
static double extrapolate(double x0, double y0, double x1, double y1, double x)
{
return y0 + ((x-x0)/(x1-x0)) * (y1-y0);
}
// Linear interpolation
static double interpolate(double x0, double y0, double x1, double y1, double x)
{
return (y0*(x1-x) + y1*(x-x0)) / (x1-x0);
}
StarTrackerGUI* StarTrackerGUI::create(PluginAPI* pluginAPI, FeatureUISet *featureUISet, Feature *feature)
{
StarTrackerGUI* gui = new StarTrackerGUI(pluginAPI, featureUISet, feature);
return gui;
}
void StarTrackerGUI::destroy()
{
delete this;
}
void StarTrackerGUI::resetToDefaults()
{
m_settings.resetToDefaults();
displaySettings();
applySettings(true);
}
QByteArray StarTrackerGUI::serialize() const
{
return m_settings.serialize();
}
bool StarTrackerGUI::deserialize(const QByteArray& data)
{
if (m_settings.deserialize(data))
{
displaySettings();
applySettings(true);
return true;
}
else
{
resetToDefaults();
return false;
}
}
QString StarTrackerGUI::convertDegreesToText(double degrees)
{
if (m_settings.m_azElUnits == StarTrackerSettings::DMS)
return Units::decimalDegreesToDegreeMinutesAndSeconds(degrees);
else if (m_settings.m_azElUnits == StarTrackerSettings::DM)
return Units::decimalDegreesToDegreesAndMinutes(degrees);
else if (m_settings.m_azElUnits == StarTrackerSettings::D)
return Units::decimalDegreesToDegrees(degrees);
else
return QString("%1").arg(degrees, 0, 'f', 2);
}
bool StarTrackerGUI::handleMessage(const Message& message)
{
if (StarTracker::MsgConfigureStarTracker::match(message))
{
qDebug("StarTrackerGUI::handleMessage: StarTracker::MsgConfigureStarTracker");
const StarTracker::MsgConfigureStarTracker& cfg = (StarTracker::MsgConfigureStarTracker&) message;
m_settings = cfg.getSettings();
blockApplySettings(true);
displaySettings();
blockApplySettings(false);
return true;
}
else if (StarTrackerReport::MsgReportAzAl::match(message))
{
StarTrackerReport::MsgReportAzAl& azAl = (StarTrackerReport::MsgReportAzAl&) message;
ui->azimuth->setText(convertDegreesToText(azAl.getAzimuth()));
ui->elevation->setText(convertDegreesToText(azAl.getElevation()));
return true;
}
else if (StarTrackerReport::MsgReportRADec::match(message))
{
StarTrackerReport::MsgReportRADec& raDec = (StarTrackerReport::MsgReportRADec&) message;
m_settings.m_ra = Units::decimalHoursToHoursMinutesAndSeconds(raDec.getRA());
m_settings.m_dec = Units::decimalDegreesToDegreeMinutesAndSeconds(raDec.getDec());
ui->rightAscension->setText(m_settings.m_ra);
ui->declination->setText(m_settings.m_dec);
raDecChanged();
return true;
}
return false;
}
void StarTrackerGUI::handleInputMessages()
{
Message* message;
while ((message = getInputMessageQueue()->pop()))
{
if (handleMessage(*message)) {
delete message;
}
}
}
void StarTrackerGUI::onWidgetRolled(QWidget* widget, bool rollDown)
{
(void) widget;
(void) rollDown;
}
StarTrackerGUI::StarTrackerGUI(PluginAPI* pluginAPI, FeatureUISet *featureUISet, Feature *feature, QWidget* parent) :
FeatureGUI(parent),
ui(new Ui::StarTrackerGUI),
m_pluginAPI(pluginAPI),
m_featureUISet(featureUISet),
m_doApplySettings(true),
m_lastFeatureState(0),
m_azElLineChart(nullptr),
m_azElPolarChart(nullptr),
m_networkManager(nullptr),
m_solarFlux(0.0),
m_solarFluxesValid(false),
m_images{QImage(":/startracker/startracker/150mhz_ra_dec.png"),
QImage(":/startracker/startracker/150mhz_galactic.png"),
QImage(":/startracker/startracker/408mhz_ra_dec.png"),
QImage(":/startracker/startracker/408mhz_galactic.png"),
QImage(":/startracker/startracker/1420mhz_ra_dec.png"),
QImage(":/startracker/startracker/1420mhz_galactic.png")},
m_temps{FITS(":/startracker/startracker/150mhz_ra_dec.fits"),
FITS(":/startracker/startracker/408mhz_ra_dec.fits"),
FITS(":/startracker/startracker/1420mhz_ra_dec.fits")},
m_spectralIndex(":/startracker/startracker/408mhz_ra_dec_spectral_index.fits")
{
ui->setupUi(this);
setAttribute(Qt::WA_DeleteOnClose, true);
setChannelWidget(false);
connect(this, SIGNAL(widgetRolled(QWidget*,bool)), this, SLOT(onWidgetRolled(QWidget*,bool)));
m_starTracker = reinterpret_cast<StarTracker*>(feature);
m_starTracker->setMessageQueueToGUI(&m_inputMessageQueue);
m_featureUISet->addRollupWidget(this);
connect(this, SIGNAL(customContextMenuRequested(const QPoint &)), this, SLOT(onMenuDialogCalled(const QPoint &)));
connect(getInputMessageQueue(), SIGNAL(messageEnqueued()), this, SLOT(handleInputMessages()));
connect(&m_dlm, &HttpDownloadManager::downloadComplete, this, &StarTrackerGUI::downloadFinished);
connect(&m_statusTimer, SIGNAL(timeout()), this, SLOT(updateStatus()));
m_statusTimer.start(1000);
// Intialise chart
m_chart.legend()->hide();
ui->chart->setChart(&m_chart);
ui->chart->setRenderHint(QPainter::Antialiasing);
m_chart.addAxis(&m_chartXAxis, Qt::AlignBottom);
m_chart.addAxis(&m_chartYAxis, Qt::AlignLeft);
m_chart.layout()->setContentsMargins(0, 0, 0, 0);
m_chart.setMargins(QMargins(1, 1, 1, 1));
m_solarFluxChart.setTitle("");
m_solarFluxChart.legend()->hide();
m_solarFluxChart.addAxis(&m_chartSolarFluxXAxis, Qt::AlignBottom);
m_solarFluxChart.addAxis(&m_chartSolarFluxYAxis, Qt::AlignLeft);
m_solarFluxChart.layout()->setContentsMargins(0, 0, 0, 0);
m_solarFluxChart.setMargins(QMargins(1, 1, 1, 1));
m_chartSolarFluxXAxis.setTitleText(QString("Frequency (MHz)"));
m_chartSolarFluxXAxis.setMinorTickCount(-1);
m_chartSolarFluxYAxis.setTitleText(QString("Solar flux density (%1)").arg(solarFluxUnit()));
// Create axes that are static
m_skyTempGalacticLXAxis.setTitleText(QString("Galactic longitude (%1)").arg(QChar(0xb0)));
m_skyTempGalacticLXAxis.setMin(0);
m_skyTempGalacticLXAxis.setMax(360);
m_skyTempGalacticLXAxis.append("180", 0);
m_skyTempGalacticLXAxis.append("90", 90);
m_skyTempGalacticLXAxis.append("0/360", 180);
m_skyTempGalacticLXAxis.append("270", 270);
//m_skyTempGalacticLXAxis.append("180", 360); // Note - labels need to be unique, so can't have 180 at start and end
m_skyTempGalacticLXAxis.setLabelsPosition(QCategoryAxis::AxisLabelsPositionOnValue);
m_skyTempGalacticLXAxis.setGridLineVisible(false);
m_skyTempRAXAxis.setTitleText(QString("Right ascension (hours)"));
m_skyTempRAXAxis.setMin(0);
m_skyTempRAXAxis.setMax(24);
m_skyTempRAXAxis.append("12", 0);
m_skyTempRAXAxis.append("9", 3);
m_skyTempRAXAxis.append("6", 6);
m_skyTempRAXAxis.append("3", 9);
m_skyTempRAXAxis.append("0", 12);
m_skyTempRAXAxis.append("21", 15);
m_skyTempRAXAxis.append("18", 18);
m_skyTempRAXAxis.append("15", 21);
//m_skyTempRAXAxis.append("12", 24); // Note - labels need to be unique, so can't have 12 at start and end
m_skyTempRAXAxis.setLabelsPosition(QCategoryAxis::AxisLabelsPositionOnValue);
m_skyTempRAXAxis.setGridLineVisible(false);
m_skyTempYAxis.setGridLineVisible(false);
m_skyTempYAxis.setRange(-90.0, 90.0);
m_skyTempYAxis.setGridLineVisible(false);
ui->dateTime->setDateTime(QDateTime::currentDateTime());
displaySettings();
applySettings(true);
// Populate subchart menu
on_chartSelect_currentIndexChanged(0);
// Use My Position from preferences, if none set
if ((m_settings.m_latitude == 0.0) && (m_settings.m_longitude == 0.0))
on_useMyPosition_clicked();
/*
printf("saemundsson=[");
for (int i = 0; i <= 90; i+= 5)
printf("%f ", Astronomy::refractionSaemundsson(i, m_settings.m_pressure, m_settings.m_temperature));
printf("];\n");
printf("palRadio=[");
for (int i = 0; i <= 90; i+= 5)
printf("%f ", Astronomy::refractionPAL(i, m_settings.m_pressure, m_settings.m_temperature, m_settings.m_humidity,
100000000, m_settings.m_latitude, m_settings.m_heightAboveSeaLevel,
m_settings.m_temperatureLapseRate));
printf("];\n");
printf("palLight=[");
for (int i = 0; i <= 90; i+= 5)
printf("%f ",Astronomy::refractionPAL(i, m_settings.m_pressure, m_settings.m_temperature, m_settings.m_humidity,
7.5e14, m_settings.m_latitude, m_settings.m_heightAboveSeaLevel,
m_settings.m_temperatureLapseRate));
printf("];\n");
*/
m_networkManager = new QNetworkAccessManager();
connect(m_networkManager, SIGNAL(finished(QNetworkReply*)), this, SLOT(networkManagerFinished(QNetworkReply*)));
readSolarFlux();
connect(&m_solarFluxTimer, SIGNAL(timeout()), this, SLOT(autoUpdateSolarFlux()));
m_solarFluxTimer.start(1000*60*60*24); // Update every 24hours
autoUpdateSolarFlux();
}
StarTrackerGUI::~StarTrackerGUI()
{
disconnect(m_networkManager, SIGNAL(finished(QNetworkReply*)), this, SLOT(networkManagerFinished(QNetworkReply*)));
delete m_networkManager;
delete ui;
}
void StarTrackerGUI::blockApplySettings(bool block)
{
m_doApplySettings = !block;
}
void StarTrackerGUI::displaySettings()
{
setTitleColor(m_settings.m_rgbColor);
setWindowTitle(m_settings.m_title);
blockApplySettings(true);
ui->latitude->setValue(m_settings.m_latitude);
ui->longitude->setValue(m_settings.m_longitude);
ui->target->setCurrentIndex(ui->target->findText(m_settings.m_target));
if (m_settings.m_target == "Custom")
{
ui->rightAscension->setText(m_settings.m_ra);
ui->declination->setText(m_settings.m_dec);
}
if (m_settings.m_dateTime == "")
{
ui->dateTimeSelect->setCurrentIndex(0);
ui->dateTime->setVisible(false);
}
else
{
ui->dateTime->setDateTime(QDateTime::fromString(m_settings.m_dateTime, Qt::ISODateWithMs));
ui->dateTime->setVisible(true);
ui->dateTimeSelect->setCurrentIndex(1);
}
if ((m_settings.m_solarFluxData != StarTrackerSettings::DRAO_2800) && !m_solarFluxesValid)
autoUpdateSolarFlux();
ui->frequency->setValue(m_settings.m_frequency/1000000.0);
ui->beamwidth->setValue(m_settings.m_beamwidth);
updateForTarget();
plotChart();
blockApplySettings(false);
}
void StarTrackerGUI::leaveEvent(QEvent*)
{
}
void StarTrackerGUI::enterEvent(QEvent*)
{
}
void StarTrackerGUI::onMenuDialogCalled(const QPoint &p)
{
if (m_contextMenuType == ContextMenuChannelSettings)
{
BasicFeatureSettingsDialog dialog(this);
dialog.setTitle(m_settings.m_title);
dialog.setColor(m_settings.m_rgbColor);
dialog.setUseReverseAPI(m_settings.m_useReverseAPI);
dialog.setReverseAPIAddress(m_settings.m_reverseAPIAddress);
dialog.setReverseAPIPort(m_settings.m_reverseAPIPort);
dialog.setReverseAPIFeatureSetIndex(m_settings.m_reverseAPIFeatureSetIndex);
dialog.setReverseAPIFeatureIndex(m_settings.m_reverseAPIFeatureIndex);
dialog.move(p);
dialog.exec();
m_settings.m_rgbColor = dialog.getColor().rgb();
m_settings.m_title = dialog.getTitle();
m_settings.m_useReverseAPI = dialog.useReverseAPI();
m_settings.m_reverseAPIAddress = dialog.getReverseAPIAddress();
m_settings.m_reverseAPIPort = dialog.getReverseAPIPort();
m_settings.m_reverseAPIFeatureSetIndex = dialog.getReverseAPIFeatureSetIndex();
m_settings.m_reverseAPIFeatureIndex = dialog.getReverseAPIFeatureIndex();
setWindowTitle(m_settings.m_title);
setTitleColor(m_settings.m_rgbColor);
applySettings();
}
resetContextMenuType();
}
void StarTrackerGUI::on_startStop_toggled(bool checked)
{
if (m_doApplySettings)
{
StarTracker::MsgStartStop *message = StarTracker::MsgStartStop::create(checked);
m_starTracker->getInputMessageQueue()->push(message);
}
}
void StarTrackerGUI::on_latitude_valueChanged(double value)
{
m_settings.m_latitude = value;
applySettings();
plotChart();
}
void StarTrackerGUI::on_longitude_valueChanged(double value)
{
m_settings.m_longitude = value;
applySettings();
plotChart();
}
void StarTrackerGUI::on_rightAscension_editingFinished()
{
m_settings.m_ra = ui->rightAscension->text();
applySettings();
plotChart();
}
void StarTrackerGUI::on_declination_editingFinished()
{
m_settings.m_dec = ui->declination->text();
applySettings();
plotChart();
}
void StarTrackerGUI::updateForTarget()
{
if (m_settings.m_target == "Sun")
{
ui->rightAscension->setReadOnly(true);
ui->declination->setReadOnly(true);
ui->rightAscension->setText("");
ui->declination->setText("");
}
else if (m_settings.m_target == "Moon")
{
ui->rightAscension->setReadOnly(true);
ui->declination->setReadOnly(true);
ui->rightAscension->setText("");
ui->declination->setText("");
}
else if (m_settings.m_target == "Custom")
{
ui->rightAscension->setReadOnly(false);
ui->declination->setReadOnly(false);
}
else
{
ui->rightAscension->setReadOnly(true);
ui->declination->setReadOnly(true);
if (m_settings.m_target == "PSR B0329+54")
{
ui->rightAscension->setText("03h32m59.35s");
ui->declination->setText(QString("54%0134'45.05\"").arg(QChar(0xb0)));
}
else if (m_settings.m_target == "PSR B0833-45")
{
ui->rightAscension->setText("08h35m20.66s");
ui->declination->setText(QString("-45%0110'35.15\"").arg(QChar(0xb0)));
}
else if (m_settings.m_target == "Sagittarius A")
{
ui->rightAscension->setText("17h45m40.04s");
ui->declination->setText(QString("-29%0100'28.17\"").arg(QChar(0xb0)));
}
else if (m_settings.m_target == "Cassiopeia A")
{
ui->rightAscension->setText("23h23m24s");
ui->declination->setText(QString("58%0148'54\"").arg(QChar(0xb0)));
}
else if (m_settings.m_target == "Cygnus A")
{
ui->rightAscension->setText("19h59m28.36s");
ui->declination->setText(QString("40%0144'02.1\"").arg(QChar(0xb0)));
}
else if (m_settings.m_target == "Taurus A (M1)")
{
ui->rightAscension->setText("05h34m31.94s");
ui->declination->setText(QString("22%0100'52.2\"").arg(QChar(0xb0)));
}
else if (m_settings.m_target == "Virgo A (M87)")
{
ui->rightAscension->setText("12h30m49.42s");
ui->declination->setText(QString("12%0123'28.04\"").arg(QChar(0xb0)));
}
on_rightAscension_editingFinished();
on_declination_editingFinished();
}
// Clear as no longer valid when target has changed
ui->azimuth->setText("");
ui->elevation->setText("");
}
void StarTrackerGUI::on_target_currentTextChanged(const QString &text)
{
m_settings.m_target = text;
applySettings();
updateForTarget();
plotChart();
}
void StarTrackerGUI::updateLST()
{
QDateTime dt;
if (m_settings.m_dateTime.isEmpty())
dt = QDateTime::currentDateTime();
else
dt = QDateTime::fromString(m_settings.m_dateTime, Qt::ISODateWithMs);
double lst = Astronomy::localSiderealTime(dt, m_settings.m_longitude);
ui->lst->setText(Units::decimalHoursToHoursMinutesAndSeconds(lst/15.0, 0));
}
void StarTrackerGUI::updateStatus()
{
int state = m_starTracker->getState();
if (m_lastFeatureState != state)
{
// We set checked state of start/stop button, in case it was changed via API
bool oldState;
switch (state)
{
case Feature::StNotStarted:
ui->startStop->setStyleSheet("QToolButton { background:rgb(79,79,79); }");
break;
case Feature::StIdle:
oldState = ui->startStop->blockSignals(true);
ui->startStop->setChecked(false);
ui->startStop->blockSignals(oldState);
ui->startStop->setStyleSheet("QToolButton { background-color : blue; }");
break;
case Feature::StRunning:
oldState = ui->startStop->blockSignals(true);
ui->startStop->setChecked(true);
ui->startStop->blockSignals(oldState);
ui->startStop->setStyleSheet("QToolButton { background-color : green; }");
break;
case Feature::StError:
ui->startStop->setStyleSheet("QToolButton { background-color : red; }");
QMessageBox::information(this, tr("Message"), m_starTracker->getErrorMessage());
break;
default:
break;
}
m_lastFeatureState = state;
}
updateLST();
}
void StarTrackerGUI::applySettings(bool force)
{
if (m_doApplySettings)
{
StarTracker::MsgConfigureStarTracker* message = StarTracker::MsgConfigureStarTracker::create(m_settings, force);
m_starTracker->getInputMessageQueue()->push(message);
}
}
void StarTrackerGUI::on_useMyPosition_clicked(bool checked)
{
(void) checked;
double stationLatitude = MainCore::instance()->getSettings().getLatitude();
double stationLongitude = MainCore::instance()->getSettings().getLongitude();
double stationAltitude = MainCore::instance()->getSettings().getAltitude();
ui->latitude->setValue(stationLatitude);
ui->longitude->setValue(stationLongitude);
m_settings.m_heightAboveSeaLevel = stationAltitude;
applySettings();
plotChart();
}
// Show settings dialog
void StarTrackerGUI::on_displaySettings_clicked()
{
StarTrackerSettingsDialog dialog(&m_settings);
if (dialog.exec() == QDialog::Accepted)
{
applySettings();
displaySolarFlux();
if (ui->chartSelect->currentIndex() == 1)
plotChart();
}
}
void StarTrackerGUI::on_dateTimeSelect_currentTextChanged(const QString &text)
{
if (text == "Now")
{
m_settings.m_dateTime = "";
ui->dateTime->setVisible(false);
}
else
{
m_settings.m_dateTime = ui->dateTime->dateTime().toString(Qt::ISODateWithMs);
ui->dateTime->setVisible(true);
}
applySettings();
plotChart();
}
void StarTrackerGUI::on_dateTime_dateTimeChanged(const QDateTime &datetime)
{
(void) datetime;
if (ui->dateTimeSelect->currentIndex() == 1)
{
m_settings.m_dateTime = ui->dateTime->dateTime().toString(Qt::ISODateWithMs);
applySettings();
plotChart();
}
}
void StarTrackerGUI::plotChart()
{
if (ui->chartSelect->currentIndex() == 0)
{
if (ui->chartSubSelect->currentIndex() == 0)
plotElevationLineChart();
else
plotElevationPolarChart();
}
else if (ui->chartSelect->currentIndex() == 1)
plotSolarFluxChart();
else if (ui->chartSelect->currentIndex() == 2)
plotSkyTemperatureChart();
}
void StarTrackerGUI::raDecChanged()
{
if (ui->chartSelect->currentIndex() == 2)
plotSkyTemperatureChart();
}
void StarTrackerGUI::on_frequency_valueChanged(int value)
{
m_settings.m_frequency = value*1000000.0;
applySettings();
if (ui->chartSelect->currentIndex() != 0)
{
updateChartSubSelect();
plotChart();
}
displaySolarFlux();
}
void StarTrackerGUI::on_beamwidth_valueChanged(double value)
{
m_settings.m_beamwidth = value;
applySettings();
updateChartSubSelect();
if (ui->chartSelect->currentIndex() == 2)
plotChart();
}
void StarTrackerGUI::plotSolarFluxChart()
{
m_solarFluxChart.removeAllSeries();
if (m_solarFluxesValid)
{
double maxValue = -std::numeric_limits<double>::infinity();
double minValue = std::numeric_limits<double>::infinity();
QLineSeries *series = new QLineSeries();
for (int i = 0; i < 8; i++)
{
double value = convertSolarFluxUnits(m_solarFluxes[i]);
series->append(m_solarFluxFrequencies[i], value);
maxValue = std::max(value, maxValue);
minValue = std::min(value, minValue);
}
series->setPointLabelsVisible(true);
series->setPointLabelsFormat("@yPoint");
series->setPointLabelsClipping(false);
m_solarFluxChart.addSeries(series);
series->attachAxis(&m_chartSolarFluxXAxis);
series->attachAxis(&m_chartSolarFluxYAxis);
if (m_settings.m_solarFluxUnits == StarTrackerSettings::SFU)
{
m_chartSolarFluxYAxis.setLabelFormat("%d");
m_chartSolarFluxYAxis.setRange(0.0, ((((int)maxValue)+99)/100)*100);
}
else if (m_settings.m_solarFluxUnits == StarTrackerSettings::JANSKY)
{
m_chartSolarFluxYAxis.setLabelFormat("%.2g");
m_chartSolarFluxYAxis.setRange(0, ((((int)maxValue)+999999)/100000)*100000);
}
else
{
m_chartSolarFluxYAxis.setLabelFormat("%.2g");
m_chartSolarFluxYAxis.setRange(minValue, maxValue);
}
}
else
m_solarFluxChart.setTitle("Press download Solar flux density data to view");
ui->chart->setChart(&m_solarFluxChart);
// m_chart.setPlotAreaBackgroundVisible(false);
// disconnect(&m_chart, SIGNAL(plotAreaChanged(QRectF)), this, SLOT(plotAreaChanged(QRectF)));
}
void StarTrackerGUI::plotSkyTemperatureChart()
{
bool galactic = (ui->chartSubSelect->currentIndex() & 1) == 1;
m_chart.removeAllSeries();
removeAllAxes();
QScatterSeries *series = new QScatterSeries();
float ra = Astronomy::raToDecimal(m_settings.m_ra);
float dec = Astronomy::decToDecimal(m_settings.m_dec);
double beamWidth = m_settings.m_beamwidth;
// Ellipse not supported, so draw circle on shorter axis
double degPerPixelW = 360.0/m_chart.plotArea().width();
double degPerPixelH = 180.0/m_chart.plotArea().height();
double degPerPixel = std::min(degPerPixelW, degPerPixelH);
double markerSize;
if (galactic)
{
// Convert to category coordinates
double l, b;
Astronomy::equatorialToGalactic(ra, dec, l, b);
// Map to linear axis
double lAxis;
if (l < 180.0)
lAxis = 180.0 - l;
else
lAxis = 360.0 - l + 180.0;
series->append(lAxis, b);
}
else
{
// Map to category axis
double raAxis;
if (ra <= 12.0)
raAxis = 12.0 - ra;
else
raAxis = 24 - ra + 12;
series->append(raAxis, dec);
}
// Get temperature
int idx = ui->chartSubSelect->currentIndex();
if ((idx == 6) || (idx == 7))
{
// Adjust temperature from 408MHz FITS file, taking in to account
// observation frequency and beamwidth
FITS *fits = &m_temps[1];
if (fits->valid())
{
const double beamwidth = m_settings.m_beamwidth;
const double halfBeamwidth = beamwidth/2.0;
// Use cos^p(x) for approximation of radiation pattern
// (Essentially the same as Gaussian of exp(-4*ln(theta^2/beamwidth^2))
// (See a2 in https://arxiv.org/pdf/1812.10084.pdf for Elliptical equivalent))
// We have gain of 0dB (1) at 0 degrees, and -3dB (~0.5) at half-beamwidth degrees
// Find exponent that correponds to -3dB at that angle
double minus3dBLinear = pow(10.0, -3.0/10.0);
double p = log(minus3dBLinear)/log(cos(Units::degreesToRadians(halfBeamwidth)));
// Create an matrix with gain as a function of angle
double degreesPerPixelH = abs(fits->degreesPerPixelH());
double degreesPerPixelV = abs(fits->degreesPerPixelV());
int numberOfCoeffsH = ceil(beamwidth/degreesPerPixelH);
int numberOfCoeffsV = ceil(beamwidth/degreesPerPixelV);
if ((numberOfCoeffsH & 1) == 0)
numberOfCoeffsH++;
if ((numberOfCoeffsV & 1) == 0)
numberOfCoeffsV++;
double *beam = new double[numberOfCoeffsH*numberOfCoeffsV];
double sum = 0.0;
int y0 = numberOfCoeffsV/2;
int x0 = numberOfCoeffsH/2;
int nonZeroCount = 0;
for (int y = 0; y < numberOfCoeffsV; y++)
{
for (int x = 0; x < numberOfCoeffsH; x++)
{
double xp = (x - x0) * degreesPerPixelH;
double yp = (y - y0) * degreesPerPixelV;
double r = sqrt(xp*xp+yp*yp);
if (r < halfBeamwidth)
{
beam[y*numberOfCoeffsH+x] = pow(cos(Units::degreesToRadians(r)), p);
sum += beam[y*numberOfCoeffsH+x];
nonZeroCount++;
}
else
beam[y*numberOfCoeffsH+x] = 0.0;
}
}
// Get centre pixel coordinates
double centreX;
if (ra <= 12.0)
centreX = (12.0 - ra) / 24.0;
else
centreX = (24 - ra + 12) / 24.0;
double centreY = (90.0-dec) / 180.0;
int imgX = centreX * fits->width();
int imgY = centreY * fits->height();
// Apply weighting to temperature data
double weightedSum = 0.0;
for (int y = 0; y < numberOfCoeffsV; y++)
{
for (int x = 0; x < numberOfCoeffsH; x++)
{
weightedSum += beam[y*numberOfCoeffsH+x] * fits->scaledWrappedValue(imgX + (x-x0), imgY + (y-y0));
}
}
// From: https://www.cv.nrao.edu/~sransom/web/Ch3.html
// The antenna temperature equals the source brightness temperature multiplied by the fraction of the beam solid angle filled by the source
// So we scale the sum by the total number of non-zero pixels (i.e. beam area)
// If we compare to some maps with different beamwidths here: https://www.cv.nrao.edu/~demerson/radiosky/sky_jun96.pdf
// The values we've computed are a bit higher..
double temp408 = weightedSum/nonZeroCount;
// Scale according to frequency - CMB contribution constant
// Power law at low frequencies, with slight variation in spectral index
// See:
// Global Sky Model: https://ascl.net/1011.010
// An improved Model of Diffuse Galactic Radio Emission: https://arxiv.org/pdf/1605.04920.pdf
// A high-resolution self-consistent whole sky foreground model: https://arxiv.org/abs/1812.10084
// (De-striping:) Full sky study of diffuse Galactic emission at decimeter wavelength https://www.aanda.org/articles/aa/pdf/2003/42/aah4363.pdf
// Data here: http://cdsarc.u-strasbg.fr/viz-bin/cat/J/A+A/410/847
// LFmap: https://www.faculty.ece.vt.edu/swe/lwa/memo/lwa0111.pdf
double iso408 = 50 * pow(150e6/408e6, 2.75); // Extra-galactic isotropic in reference map at 408MHz
double isoT = 50 * pow(150e6/m_settings.m_frequency, 2.75); // Extra-galactic isotropic at target frequency
double cmbT = 2.725; // Cosmic microwave backgroud;
double spectralIndex;
if (m_spectralIndex.valid())
{
// See https://www.aanda.org/articles/aa/pdf/2003/42/aah4363.pdf
spectralIndex = m_spectralIndex.scaledValue(imgX, imgY);
}
else
{
// See https://arxiv.org/abs/1812.10084 fig 2
if (m_settings.m_frequency < 200e6)
spectralIndex = 2.55;
else if (m_settings.m_frequency < 20e9)
spectralIndex = 2.695;
else
spectralIndex = 3.1;
}
double galactic480 = temp408 - cmbT - iso408;
double galacticT = galactic480 * pow(408e6/m_settings.m_frequency, spectralIndex); // Scale galactic contribution by frequency
double temp = galacticT + cmbT + isoT; // Final temperature
series->setPointLabelsVisible(true);
series->setPointLabelsColor(Qt::red);
series->setPointLabelsFormat(QString("%1 K").arg(std::round(temp)));
// Scale marker size by beamwidth
markerSize = std::max((int)round(beamWidth * degPerPixel), 5);
}
else
qDebug() << "StarTrackerGUI::plotSkyTemperatureChart: FITS temperature file not valid";
}
else
{
// Read temperature from selected FITS file at target RA/Dec
QImage *img = &m_images[idx];
FITS *fits = &m_temps[idx/2];
double x;
if (ra <= 12.0)
x = (12.0 - ra) / 24.0;
else
x = (24 - ra + 12) / 24.0;
int imgX = x * img->width();
if (imgX >= img->width())
imgX = img->width();
int imgY = (90.0-dec)/180.0 * img->height();
if (imgY >= img->height())
imgY = img->height();
if (fits->valid())
{
double temp = fits->scaledValue(imgX, imgY);
series->setPointLabelsVisible(true);
series->setPointLabelsColor(Qt::red);
series->setPointLabelsFormat(QString("%1 K").arg(std::round(temp)));
}
// Temperature from just one pixel, but need to make marker visbile
markerSize = 5;
}
series->setMarkerSize(markerSize);
m_chart.setTitle("");
m_chart.addSeries(series);
if (galactic)
{
m_chart.addAxis(&m_skyTempGalacticLXAxis, Qt::AlignBottom);
series->attachAxis(&m_skyTempGalacticLXAxis);
m_skyTempYAxis.setTitleText(QString("Galactic latitude (%1)").arg(QChar(0xb0)));
m_chart.addAxis(&m_skyTempYAxis, Qt::AlignLeft);
series->attachAxis(&m_skyTempYAxis);
}
else
{
m_chart.addAxis(&m_skyTempRAXAxis, Qt::AlignBottom);
series->attachAxis(&m_skyTempRAXAxis);
m_skyTempYAxis.setTitleText(QString("Declination (%1)").arg(QChar(0xb0)));
m_chart.addAxis(&m_skyTempYAxis, Qt::AlignLeft);
series->attachAxis(&m_skyTempYAxis);
}
ui->chart->setChart(&m_chart);
plotAreaChanged(m_chart.plotArea());
connect(&m_chart, SIGNAL(plotAreaChanged(QRectF)), this, SLOT(plotAreaChanged(QRectF)));
}
void StarTrackerGUI::plotAreaChanged(const QRectF &plotArea)
{
int width = static_cast<int>(plotArea.width());
int height = static_cast<int>(plotArea.height());
int viewW = static_cast<int>(ui->chart->width());
int viewH = static_cast<int>(ui->chart->height());
// Scale the image to fit plot area
int imageIdx = ui->chartSubSelect->currentIndex();
if (imageIdx == 6)
imageIdx = 2;
else if (imageIdx == 7)
imageIdx = 3;
QImage image = m_images[imageIdx].scaled(QSize(width, height), Qt::IgnoreAspectRatio);
QImage translated(viewW, viewH, QImage::Format_ARGB32);
translated.fill(Qt::white);
QPainter painter(&translated);
painter.drawImage(plotArea.topLeft(), image);
m_chart.setPlotAreaBackgroundBrush(translated);
m_chart.setPlotAreaBackgroundVisible(true);
}
void StarTrackerGUI::removeAllAxes()
{
QList<QAbstractAxis *> axes;
axes = m_chart.axes(Qt::Horizontal);
for (QAbstractAxis *axis : axes)
m_chart.removeAxis(axis);
axes = m_chart.axes(Qt::Vertical);
for (QAbstractAxis *axis : axes)
m_chart.removeAxis(axis);
}
// Plot target elevation angle over the day
void StarTrackerGUI::plotElevationLineChart()
{
QChart *oldChart = m_azElLineChart;
m_azElLineChart = new QChart();
QDateTimeAxis *xAxis = new QDateTimeAxis();
QValueAxis *yLeftAxis = new QValueAxis();
QValueAxis *yRightAxis = new QValueAxis();
m_azElLineChart->legend()->hide();
m_azElLineChart->layout()->setContentsMargins(0, 0, 0, 0);
m_azElLineChart->setMargins(QMargins(1, 1, 1, 1));
double maxElevation = -90.0;
QLineSeries *elSeries = new QLineSeries();
QList<QLineSeries *> azSeriesList;
QLineSeries *azSeries = new QLineSeries();
azSeriesList.append(azSeries);
QPen pen(QColor(153, 202, 83), 2, Qt::SolidLine);
azSeries->setPen(pen);
QDateTime dt;
if (m_settings.m_dateTime.isEmpty())
dt = QDateTime::currentDateTime();
else
dt = QDateTime::fromString(m_settings.m_dateTime, Qt::ISODateWithMs);
dt.setTime(QTime(0,0));
QDateTime startTime = dt;
QDateTime endTime = dt;
double prevAz;
int timestep = 10*60;
for (int step = 0; step <= 24*60*60/timestep; step++)
{
AzAlt aa;
RADec rd;
// Calculate elevation of desired object
if (m_settings.m_target == "Sun")
Astronomy::sunPosition(aa, rd, m_settings.m_latitude, m_settings.m_longitude, dt);
else if (m_settings.m_target == "Moon")
Astronomy::moonPosition(aa, rd, m_settings.m_latitude, m_settings.m_longitude, dt);
else
{
rd.ra = Astronomy::raToDecimal(m_settings.m_ra);
rd.dec = Astronomy::decToDecimal(m_settings.m_dec);
aa = Astronomy::raDecToAzAlt(rd, m_settings.m_latitude, m_settings.m_longitude, dt, !m_settings.m_jnow);
}
if (aa.alt > maxElevation)
maxElevation = aa.alt;
// Adjust for refraction
if (m_settings.m_refraction == "Positional Astronomy Library")
{
aa.alt += Astronomy::refractionPAL(aa.alt, m_settings.m_pressure, m_settings.m_temperature, m_settings.m_humidity,
m_settings.m_frequency, m_settings.m_latitude, m_settings.m_heightAboveSeaLevel,
m_settings.m_temperatureLapseRate);
if (aa.alt > 90.0)
aa.alt = 90.0f;
}
else if (m_settings.m_refraction == "Saemundsson")
{
aa.alt += Astronomy::refractionSaemundsson(aa.alt, m_settings.m_pressure, m_settings.m_temperature);
if (aa.alt > 90.0)
aa.alt = 90.0f;
}
if (step == 0)
prevAz = aa.az;
if (((prevAz >= 270) && (aa.az < 90)) || ((prevAz < 90) && (aa.az >= 270)))
{
azSeries = new QLineSeries();
azSeriesList.append(azSeries);
azSeries->setPen(pen);
}
elSeries->append(dt.toMSecsSinceEpoch(), aa.alt);
azSeries->append(dt.toMSecsSinceEpoch(), aa.az);
endTime = dt;
prevAz = aa.az;
dt = dt.addSecs(timestep); // addSecs accounts for daylight savings jumps
}
m_azElLineChart->addAxis(xAxis, Qt::AlignBottom);
m_azElLineChart->addAxis(yLeftAxis, Qt::AlignLeft);
m_azElLineChart->addAxis(yRightAxis, Qt::AlignRight);
m_azElLineChart->addSeries(elSeries);
for (int i = 0; i < azSeriesList.size(); i++)
{
m_azElLineChart->addSeries(azSeriesList[i]);
azSeriesList[i]->attachAxis(xAxis);
azSeriesList[i]->attachAxis(yRightAxis);
}
elSeries->attachAxis(xAxis);
elSeries->attachAxis(yLeftAxis);
xAxis->setTitleText(QString("%1 %2").arg(startTime.date().toString()).arg(startTime.timeZoneAbbreviation()));
xAxis->setFormat("hh");
xAxis->setTickCount(7);
xAxis->setRange(startTime, endTime);
yLeftAxis->setRange(0.0, 90.0);
yLeftAxis->setTitleText(QString("Elevation (%1)").arg(QChar(0xb0)));
yRightAxis->setRange(0.0, 360.0);
yRightAxis->setTitleText(QString("Azimuth (%1)").arg(QChar(0xb0)));
if (maxElevation < 0)
m_azElLineChart->setTitle("Not visible from this latitude");
else
m_azElLineChart->setTitle("");
ui->chart->setChart(m_azElLineChart);
delete oldChart;
}
// Plot target elevation angle over the day
void StarTrackerGUI::plotElevationPolarChart()
{
QChart *oldChart = m_azElPolarChart;
m_azElPolarChart = new QPolarChart();
QValueAxis *angularAxis = new QValueAxis();
QCategoryAxis *radialAxis = new QCategoryAxis();
angularAxis->setTickCount(9);
angularAxis->setMinorTickCount(1);
angularAxis->setLabelFormat("%d");
angularAxis->setRange(0, 360);
radialAxis->setMin(0);
radialAxis->setMax(90);
radialAxis->append("90", 0);
radialAxis->append("60", 30);
radialAxis->append("30", 60);
radialAxis->append("0", 90);
radialAxis->setLabelsPosition(QCategoryAxis::AxisLabelsPositionOnValue);
m_azElPolarChart->addAxis(angularAxis, QPolarChart::PolarOrientationAngular);
m_azElPolarChart->addAxis(radialAxis, QPolarChart::PolarOrientationRadial);
m_azElPolarChart->legend()->hide();
m_azElPolarChart->layout()->setContentsMargins(0, 0, 0, 0);
m_azElPolarChart->setMargins(QMargins(1, 1, 1, 1));
double maxElevation = -90.0;
QLineSeries *polarSeries = new QLineSeries();
QDateTime dt;
if (m_settings.m_dateTime.isEmpty())
dt = QDateTime::currentDateTime();
else
dt = QDateTime::fromString(m_settings.m_dateTime, Qt::ISODateWithMs);
dt.setTime(QTime(0,0));
QDateTime startTime = dt;
QDateTime endTime = dt;
QDateTime riseTime;
QDateTime setTime;
int riseIdx = -1;
int setIdx = -1;
int idx = 0;
int timestep = 10*60; // Rise/set times accurate to nearest 10 minutes
double prevAlt;
for (int step = 0; step <= 24*60*60/timestep; step++)
{
AzAlt aa;
RADec rd;
// Calculate elevation of desired object
if (m_settings.m_target == "Sun")
Astronomy::sunPosition(aa, rd, m_settings.m_latitude, m_settings.m_longitude, dt);
else if (m_settings.m_target == "Moon")
Astronomy::moonPosition(aa, rd, m_settings.m_latitude, m_settings.m_longitude, dt);
else
{
rd.ra = Astronomy::raToDecimal(m_settings.m_ra);
rd.dec = Astronomy::decToDecimal(m_settings.m_dec);
aa = Astronomy::raDecToAzAlt(rd, m_settings.m_latitude, m_settings.m_longitude, dt, !m_settings.m_jnow);
}
if (aa.alt > maxElevation)
maxElevation = aa.alt;
// Adjust for refraction
if (m_settings.m_refraction == "Positional Astronomy Library")
{
aa.alt += Astronomy::refractionPAL(aa.alt, m_settings.m_pressure, m_settings.m_temperature, m_settings.m_humidity,
m_settings.m_frequency, m_settings.m_latitude, m_settings.m_heightAboveSeaLevel,
m_settings.m_temperatureLapseRate);
if (aa.alt > 90.0)
aa.alt = 90.0f;
}
else if (m_settings.m_refraction == "Saemundsson")
{
aa.alt += Astronomy::refractionSaemundsson(aa.alt, m_settings.m_pressure, m_settings.m_temperature);
if (aa.alt > 90.0)
aa.alt = 90.0f;
}
if (idx == 0)
prevAlt = aa.alt;
// We can have set before rise in a day, if the object starts > 0
if ((aa.alt >= 0.0) && (prevAlt < 0.0))
{
riseTime = dt;
riseIdx = idx;
}
if ((aa.alt < 0.0) && (prevAlt >= 0.0))
{
setTime = endTime;
setIdx = idx;
}
polarSeries->append(aa.az, 90 - aa.alt);
idx++;
endTime = dt;
prevAlt = aa.alt;
dt = dt.addSecs(timestep); // addSecs accounts for daylight savings jumps
}
// Polar charts can't handle points that are more than 180 degrees apart, so
// we need to split passes that cross from 359 -> 0 degrees (or the reverse)
QList<QLineSeries *> series;
series.append(new QLineSeries());
QLineSeries *s = series.first();
QPen pen(QColor(32, 159, 223), 2, Qt::SolidLine);
s->setPen(pen);
qreal prevAz = polarSeries->at(0).x();
qreal prevEl = polarSeries->at(0).y();
for (int i = 1; i < polarSeries->count(); i++)
{
qreal az = polarSeries->at(i).x();
qreal el = polarSeries->at(i).y();
if ((prevAz > 270.0) && (az <= 90.0))
{
double elMid = interpolate(prevAz, prevEl, az+360.0, el, 360.0);
s->append(360.0, elMid);
series.append(new QLineSeries());
s = series.last();
s->setPen(pen);
s->append(0.0, elMid);
s->append(az, el);
}
else if ((prevAz <= 90.0) && (az > 270.0))
{
double elMid = interpolate(prevAz, prevEl, az-360.0, el, 0.0);
s->append(0.0, elMid);
series.append(new QLineSeries());
s = series.last();
s->setPen(pen);
s->append(360.0, elMid);
s->append(az, el);
}
else
s->append(polarSeries->at(i));
prevAz = az;
prevEl = el;
}
for (int i = 0; i < series.length(); i++)
{
m_azElPolarChart->addSeries(series[i]);
series[i]->attachAxis(angularAxis);
series[i]->attachAxis(radialAxis);
}
// Create series with single point, so we can plot time of rising
if (riseTime.isValid())
{
QLineSeries *riseSeries = new QLineSeries();
riseSeries->append(polarSeries->at(riseIdx));
riseSeries->setPointLabelsFormat(QString("Rise %1").arg(riseTime.time().toString("hh:mm")));
riseSeries->setPointLabelsVisible(true);
riseSeries->setPointLabelsClipping(false);
m_azElPolarChart->addSeries(riseSeries);
riseSeries->attachAxis(angularAxis);
riseSeries->attachAxis(radialAxis);
}
// Create series with single point, so we can plot time of setting
if (setTime.isValid())
{
QLineSeries *setSeries = new QLineSeries();
setSeries->append(polarSeries->at(setIdx));
setSeries->setPointLabelsFormat(QString("Set %1").arg(setTime.time().toString("hh:mm")));
setSeries->setPointLabelsVisible(true);
setSeries->setPointLabelsClipping(false);
m_azElPolarChart->addSeries(setSeries);
setSeries->attachAxis(angularAxis);
setSeries->attachAxis(radialAxis);
}
if (maxElevation < 0)
m_azElPolarChart->setTitle("Not visible from this latitude");
else
m_azElPolarChart->setTitle("");
ui->chart->setChart(m_azElPolarChart);
delete polarSeries;
delete oldChart;
}
// Find target on the Map
void StarTrackerGUI::on_viewOnMap_clicked()
{
QString target = m_settings.m_target == "Sun" || m_settings.m_target == "Moon" ? m_settings.m_target : "Star";
FeatureWebAPIUtils::mapFind(target);
}
void StarTrackerGUI::updateChartSubSelect()
{
if (ui->chartSelect->currentIndex() == 2)
{
ui->chartSubSelect->setItemText(6, QString("%1 MHz %2%3 Equatorial")
.arg((int)std::round(m_settings.m_frequency/1e6))
.arg((int)std::round(m_settings.m_beamwidth))
.arg(QChar(0xb0)));
ui->chartSubSelect->setItemText(7, QString("%1 MHz %2%3 Galactic")
.arg((int)std::round(m_settings.m_frequency/1e6))
.arg((int)std::round(m_settings.m_beamwidth))
.arg(QChar(0xb0)));
}
}
void StarTrackerGUI::on_chartSelect_currentIndexChanged(int index)
{
bool oldState = ui->chartSubSelect->blockSignals(true);
ui->chartSubSelect->clear();
if (index == 0)
{
ui->chartSubSelect->addItem("Az/El vs time");
ui->chartSubSelect->addItem("Polar");
}
else if (index == 2)
{
ui->chartSubSelect->addItem(QString("150 MHz 5%1 Equatorial").arg(QChar(0xb0)));
ui->chartSubSelect->addItem(QString("150 MHz 5%1 Galactic").arg(QChar(0xb0)));
ui->chartSubSelect->addItem("408 MHz 51' Equatorial");
ui->chartSubSelect->addItem("408 MHz 51' Galactic");
ui->chartSubSelect->addItem("1420 MHz 35' Equatorial");
ui->chartSubSelect->addItem("1420 MHz 35' Galactic");
ui->chartSubSelect->addItem("Custom Equatorial");
ui->chartSubSelect->addItem("Custom Galactic");
ui->chartSubSelect->setCurrentIndex(2);
updateChartSubSelect();
}
ui->chartSubSelect->blockSignals(oldState);
plotChart();
}
void StarTrackerGUI::on_chartSubSelect_currentIndexChanged(int index)
{
(void) index;
plotChart();
}
double StarTrackerGUI::convertSolarFluxUnits(double sfu)
{
switch (m_settings.m_solarFluxUnits)
{
case StarTrackerSettings::SFU:
return sfu;
case StarTrackerSettings::JANSKY:
return Units::solarFluxUnitsToJansky(sfu);
case StarTrackerSettings::WATTS_M_HZ:
return Units::solarFluxUnitsToWattsPerMetrePerHertz(sfu);
}
return 0.0;
}
QString StarTrackerGUI::solarFluxUnit()
{
switch (m_settings.m_solarFluxUnits)
{
case StarTrackerSettings::SFU:
return "sfu";
case StarTrackerSettings::JANSKY:
return "Jy";
case StarTrackerSettings::WATTS_M_HZ:
return "Wm^-2Hz^-1";
}
return "";
}
void StarTrackerGUI::displaySolarFlux()
{
if (((m_settings.m_solarFluxData == StarTrackerSettings::DRAO_2800) && (m_solarFlux == 0.0))
|| ((m_settings.m_solarFluxData != StarTrackerSettings::DRAO_2800) && !m_solarFluxesValid))
ui->solarFlux->setText("");
else
{
double solarFlux;
if (m_settings.m_solarFluxData == StarTrackerSettings::DRAO_2800)
{
solarFlux = m_solarFlux;
ui->solarFlux->setToolTip(QString("Solar flux density at 2800 MHz"));
}
else if (m_settings.m_solarFluxData == StarTrackerSettings::TARGET_FREQ)
{
double freqMhz = m_settings.m_frequency/1000000.0;
const int fluxes = sizeof(m_solarFluxFrequencies)/sizeof(*m_solarFluxFrequencies);
int i;
for (i = 0; i < fluxes; i++)
{
if (freqMhz < m_solarFluxFrequencies[i])
break;
}
if (i == 0)
{
solarFlux = extrapolate(m_solarFluxFrequencies[0], m_solarFluxes[0],
m_solarFluxFrequencies[1], m_solarFluxes[1],
freqMhz
);
}
else if (i == fluxes)
{
solarFlux = extrapolate(m_solarFluxFrequencies[fluxes-2], m_solarFluxes[fluxes-2],
m_solarFluxFrequencies[fluxes-1], m_solarFluxes[fluxes-1],
freqMhz
);
}
else
{
solarFlux = interpolate(m_solarFluxFrequencies[i-1], m_solarFluxes[i-1],
m_solarFluxFrequencies[i], m_solarFluxes[i],
freqMhz
);
}
ui->solarFlux->setToolTip(QString("Solar flux density interpolated to %1 MHz").arg(freqMhz));
}
else
{
int idx = m_settings.m_solarFluxData-StarTrackerSettings::L_245;
solarFlux = m_solarFluxes[idx];
ui->solarFlux->setToolTip(QString("Solar flux density at %1 MHz").arg(m_solarFluxFrequencies[idx]));
}
ui->solarFlux->setText(QString("%1 %2").arg(convertSolarFluxUnits(solarFlux)).arg(solarFluxUnit()));
ui->solarFlux->setCursorPosition(0);
}
}
bool StarTrackerGUI::readSolarFlux()
{
QFile file(getSolarFluxFilename());
QDateTime lastModified = file.fileTime(QFileDevice::FileModificationTime);
if (QDateTime::currentDateTime().secsTo(lastModified) >= -(60*60*24))
{
if (file.open(QIODevice::ReadOnly | QIODevice::Text))
{
QByteArray bytes = file.readLine();
QString string(bytes);
// HHMMSS 245 410 610 1415 2695 4995 8800 15400 Mhz
// 000000 000019 000027 000037 000056 000073 000116 000202 000514 sfu
QRegExp re("([0-9]{2})([0-9]{2})([0-9]{2}) ([0-9]+) ([0-9]+) ([0-9]+) ([0-9]+) ([0-9]+) ([0-9]+) ([0-9]+) ([0-9]+)");
if (re.indexIn(string) != -1)
{
for (int i = 0; i < 8; i++)
m_solarFluxes[i] = re.capturedTexts()[i+4].toInt();
m_solarFluxesValid = true;
displaySolarFlux();
plotChart();
return true;
}
}
}
else
qDebug() << "StarTrackerGUI::readSolarFlux: Solar flux data is more than 1 day old";
return false;
}
void StarTrackerGUI::networkManagerFinished(QNetworkReply *reply)
{
ui->solarFlux->setText(""); // Don't show obsolete data
QNetworkReply::NetworkError replyError = reply->error();
if (replyError)
{
qWarning() << "StarTrackerGUI::networkManagerFinished:"
<< " error(" << (int) replyError
<< "): " << replyError
<< ": " << reply->errorString();
}
else
{
QString answer = reply->readAll();
QRegExp re("\\<th\\>Observed Flux Density\\<\\/th\\>\\<td\\>([0-9]+(\\.[0-9]+)?)\\<\\/td\\>");
if (re.indexIn(answer) != -1)
{
m_solarFlux = re.capturedTexts()[1].toDouble();
displaySolarFlux();
}
else
qDebug() << "StarTrackerGUI::networkManagerFinished - No Solar flux found: " << answer;
}
reply->deleteLater();
}
QString StarTrackerGUI::getSolarFluxFilename()
{
return HttpDownloadManager::downloadDir() + "/solar_flux.srd";
}
void StarTrackerGUI::updateSolarFlux(bool all)
{
qDebug() << "StarTrackerGUI: Updating Solar flux data";
if ((m_settings.m_solarFluxData != StarTrackerSettings::DRAO_2800) || all)
{
QDate today = QDateTime::currentDateTimeUtc().date();
QString solarFluxFile = getSolarFluxFilename();
if (m_dlm.confirmDownload(solarFluxFile, nullptr, 1))
{
QString urlString = QString("http://www.sws.bom.gov.au/Category/World Data Centre/Data Display and Download/Solar Radio/station/learmonth/SRD/%1/L%2.SRD")
.arg(today.year()).arg(today.toString("yyMMdd"));
m_dlm.download(QUrl(urlString), solarFluxFile, this);
}
}
if ((m_settings.m_solarFluxData == StarTrackerSettings::DRAO_2800) || all)
{
m_networkRequest.setUrl(QUrl("https://www.spaceweather.gc.ca/solarflux/sx-4-en.php"));
m_networkManager->get(m_networkRequest);
}
}
void StarTrackerGUI::autoUpdateSolarFlux()
{
updateSolarFlux(false);
}
void StarTrackerGUI::on_downloadSolarFlux_clicked()
{
updateSolarFlux(true);
}
void StarTrackerGUI::downloadFinished(const QString& filename, bool success)
{
(void) filename;
if (success)
readSolarFlux();
}
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