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Map: Add Aurora prediction and Maidenhead grid

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This commit is contained in:
srcejon 2025-06-09 10:23:12 +01:00
parent 1aeac6e268
commit 6c9dd36f8b
14 changed files with 1001 additions and 2 deletions
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18
plugins/feature/map/cesiuminterface.cpp
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@ -177,6 +177,24 @@ void CesiumInterface::showfoF2(bool show)
send(obj);
}
void CesiumInterface::showMagDec(bool show)
{
QJsonObject obj {
{"command", "showMagneticDeclination"},
{"show", show}
};
send(obj);
}
void CesiumInterface::showMaidenheadGrid(bool show)
{
QJsonObject obj {
{"command", "showMaidenheadGrid"},
{"show", show}
};
send(obj);
}
void CesiumInterface::showLayer(const QString& layer, bool show)
{
QJsonObject obj {

2
plugins/feature/map/cesiuminterface.h
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@ -67,6 +67,8 @@ public:
void setAntiAliasing(const QString &antiAliasing);
void showMUF(bool show);
void showfoF2(bool show);
void showMagDec(bool show);
void showMaidenheadGrid(bool show);
void showLayer(const QString& layer, bool show);
void setLayerSettings(const QString& layer, const QStringList& settings, const QList<QVariant>& values);
void updateImage(const QString &name, float east, float west, float north, float south, float altitude, const QString &data);

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plugins/feature/map/icons/aurora.png Normal file
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2
plugins/feature/map/map.qrc
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@ -27,6 +27,8 @@
<file>map/waypoint.png</file>
<file>map/pager.png</file>
<file>map/map3d.html</file>
<file>map/cockpit.js</file>
<file>map/grid.js</file>
<file>data/transmitters.csv</file>
</qresource>
<qresource prefix="/">

165
plugins/feature/map/map/grid.js Normal file
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@ -0,0 +1,165 @@
// Maidenhead grid for Cesium
const polylines = new Cesium.PolylineCollection();
const polylinesFine = new Cesium.PolylineCollection();
const labels = new Cesium.LabelCollection();
const labelsFine = new Cesium.LabelCollection();
const segLen = 2;
const gridMaterial = Cesium.Material.fromType('Color');
gridMaterial.uniforms.color = new Cesium.Color(0.6, 0.6, 0.6, 1.0);
const gridLabelColor = new Cesium.Color(1, 1, 1, 1.0);
function createLat() {
for (var lon = -180; lon < 180; lon += 20) {
const array = [];
for (var lat = -90; lat <= 90; lat += segLen) {
array.push(lon);
array.push(lat);
}
polylines.add({
positions: Cesium.Cartesian3.fromDegreesArray(array),
width: 1,
material: gridMaterial
});
}
}
function createLatFine() {
for (var lon = -180; lon < 180; lon += 2) {
if (lon % 20 != 0) {
const array = [];
for (var lat = -90; lat <= 90; lat += segLen) {
array.push(lon);
array.push(lat);
}
polylinesFine.add({
positions: Cesium.Cartesian3.fromDegreesArray(array),
width: 1,
material: gridMaterial
});
}
}
}
function createLon() {
for (var lat = -80; lat <= 80; lat += 10) {
const array = [];
for (var lon = -180; lon <= 180; lon += segLen) {
array.push(lon);
array.push(lat);
}
polylines.add({
positions: Cesium.Cartesian3.fromDegreesArray(array),
width: 1,
material: gridMaterial
});
}
}
function createLonFine() {
for (var lat = -80; lat <= 80; lat += 1) {
if (lat % 10 != 0) {
const array = [];
for (var lon = -180; lon <= 180; lon += segLen) {
array.push(lon);
array.push(lat);
}
polylinesFine.add({
positions: Cesium.Cartesian3.fromDegreesArray(array),
width: 1,
material: gridMaterial
});
}
}
}
function createLabels() {
var latField = 'B'.charCodeAt(0);
for (var lat = -80; lat <= 80; lat += 10) {
var lonField = 'A'.charCodeAt(0);
for (var lon = -180; lon < 180; lon += 20) {
labels.add({
position: Cesium.Cartesian3.fromDegrees(lon + 0.5, lat + 0.5, 0.0),
text: String.fromCharCode(lonField) + String.fromCharCode(latField),
fillColor: gridLabelColor,
font: '20px sans-serif'
});
lonField++;
}
latField++;
}
}
function createLabelsFine() {
var latField = 'B'.charCodeAt(0);
for (var lat = -80; lat <= 80; lat += 1) {
var latSq = '0'.charCodeAt(0) + mod(lat, 10);
var lonField = 'A'.charCodeAt(0);
for (var lon = -180; lon < 180; lon += 2) {
var lonSq = '0'.charCodeAt(0) + mod(lon, 20) / 2;
labelsFine.add({
position: Cesium.Cartesian3.fromDegrees(lon + 0.05, lat + 0.05, 0.0),
text: String.fromCharCode(lonField) + String.fromCharCode(latField) + String.fromCharCode(lonSq) + String.fromCharCode(latSq),
fillColor: gridLabelColor,
font: '20px sans-serif'
});
if (mod(lon, 20) == 18) {
lonField++;
}
}
if (mod(lat, 10) == 9) {
latField++;
}
}
}
function mod(n, m) {
return ((n % m) + m) % m;
}
function showGridByDistance() {
var cameraHeight = viewer.scene.ellipsoid.cartesianToCartographic(viewer.scene.camera.position).height;
const showFine = cameraHeight < 1500000;
polylinesFine.show = showFine;
labels.show = !showFine;
labelsFine.show = showFine;
}
function createGrid(viewer) {
createLatFine();
createLat();
createLonFine();
createLon();
polylinesFine.show = false;
viewer.scene.primitives.add(polylines);
viewer.scene.primitives.add(polylinesFine);
createLabels();
createLabelsFine();
labelsFine.show = false;
viewer.scene.primitives.add(labels);
viewer.scene.primitives.add(labelsFine);
}
function showGrid(show) {
if (show) {
if (polylines.length == 0) {
createGrid(viewer);
}
polylines.show = true;
viewer.clock.onTick.addEventListener(showGridByDistance);
} else {
viewer.clock.onTick.removeEventListener(showGridByDistance);
polylines.show = false;
polylinesFine.show = false;
labels.show = false;
labelsFine.show = false;
}
}

2
plugins/feature/map/map/map3d.html
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@ -22,7 +22,7 @@
</head>
<body style="margin:0;padding:0">
<div id="cesiumContainer"></div>
<script>
<script src="grid.js"></script>
// See: https://community.cesium.com/t/how-to-run-an-animation-for-an-entity-model/16932
function getActiveAnimations(viewer, entity) {

187
plugins/feature/map/map/wmm.geojson Normal file
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File diff suppressed because one or more lines are too long

44
plugins/feature/map/map/wmm.qmd Normal file
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@ -0,0 +1,44 @@
<!DOCTYPE qgis PUBLIC 'http://mrcc.com/qgis.dtd' 'SYSTEM'>
<qgis version="3.42.1-Münster">
<identifier>D_2025</identifier>
<parentidentifier></parentidentifier>
<language>ENG</language>
<type>dataset</type>
<title>D_2025</title>
<abstract></abstract>
<contact>
<name></name>
<organization></organization>
<position></position>
<voice></voice>
<fax></fax>
<email></email>
<role></role>
</contact>
<links/>
<dates/>
<fees></fees>
<encoding></encoding>
<crs>
<spatialrefsys nativeFormat="Wkt">
<wkt>GEOGCRS["WGS 84",ENSEMBLE["World Geodetic System 1984 ensemble",MEMBER["World Geodetic System 1984 (Transit)"],MEMBER["World Geodetic System 1984 (G730)"],MEMBER["World Geodetic System 1984 (G873)"],MEMBER["World Geodetic System 1984 (G1150)"],MEMBER["World Geodetic System 1984 (G1674)"],MEMBER["World Geodetic System 1984 (G1762)"],MEMBER["World Geodetic System 1984 (G2139)"],MEMBER["World Geodetic System 1984 (G2296)"],ELLIPSOID["WGS 84",6378137,298.257223563,LENGTHUNIT["metre",1]],ENSEMBLEACCURACY[2.0]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],CS[ellipsoidal,2],AXIS["geodetic latitude (Lat)",north,ORDER[1],ANGLEUNIT["degree",0.0174532925199433]],AXIS["geodetic longitude (Lon)",east,ORDER[2],ANGLEUNIT["degree",0.0174532925199433]],USAGE[SCOPE["Horizontal component of 3D system."],AREA["World."],BBOX[-90,-180,90,180]],ID["EPSG",4326]]</wkt>
<proj4>+proj=longlat +datum=WGS84 +no_defs</proj4>
<srsid>3452</srsid>
<srid>4326</srid>
<authid>EPSG:4326</authid>
<description>WGS 84</description>
<projectionacronym>longlat</projectionacronym>
<ellipsoidacronym>EPSG:7030</ellipsoidacronym>
<geographicflag>true</geographicflag>
</spatialrefsys>
</crs>
<extent>
<spatial crs="EPSG:4326" minx="179769313486231570814527423731704356798070567525844996598917476803157260780028538760589558632766878171540458953514382464234321326889464182768467546703537516986049910576551282076245490090389328944075868508455133942304583236903222948165808559332123348274797826204144723168738177180919299881250404026184124858368" maxy="-179769313486231570814527423731704356798070567525844996598917476803157260780028538760589558632766878171540458953514382464234321326889464182768467546703537516986049910576551282076245490090389328944075868508455133942304583236903222948165808559332123348274797826204144723168738177180919299881250404026184124858368" miny="179769313486231570814527423731704356798070567525844996598917476803157260780028538760589558632766878171540458953514382464234321326889464182768467546703537516986049910576551282076245490090389328944075868508455133942304583236903222948165808559332123348274797826204144723168738177180919299881250404026184124858368" minz="0" maxx="-179769313486231570814527423731704356798070567525844996598917476803157260780028538760589558632766878171540458953514382464234321326889464182768467546703537516986049910576551282076245490090389328944075868508455133942304583236903222948165808559332123348274797826204144723168738177180919299881250404026184124858368" dimensions="2" maxz="0"/>
<temporal>
<period>
<start></start>
<end></end>
</period>
</temporal>
</extent>
</qgis>

75
plugins/feature/map/mapgui.cpp
View File

@ -361,6 +361,7 @@ MapGUI::MapGUI(PluginAPI* pluginAPI, FeatureUISet *featureUISet, Feature *featur
addNAT();
addRadioTimeTransmitters();
addRadar();
addAurora();
addIonosonde();
addBroadcast();
addNavAids();
@ -813,6 +814,14 @@ void MapGUI::sdrangelServerUpdated(const QList<SDRangelServerList::SDRangelServe
}
}
void MapGUI::addAurora()
{
m_aurora = Aurora::create();
if (m_aurora) {
connect(m_aurora, &Aurora::dataUpdated, this, &MapGUI::auroraUpdated);
}
}
// Ionosonde stations
void MapGUI::addIonosonde()
{
@ -901,7 +910,7 @@ void MapGUI::updateGIRO(const QDateTime& mapDateTime)
if (m_giroRunId.isEmpty() || (!giroRunId.isEmpty() && (giroRunId != m_giroRunId)))
{
m_giro->getMUF(giroRunId);
m_giro->getMUF(giroRunId);
m_giro->getfoF2(giroRunId);
m_giroRunId = giroRunId;
m_giroDateTime = mapDateTime;
}
@ -909,6 +918,20 @@ void MapGUI::updateGIRO(const QDateTime& mapDateTime)
}
}
void MapGUI::auroraUpdated(const QImage& image)
{
//QString filename = QStandardPaths::standardLocations(QStandardPaths::AppDataLocation)[0] + "/aurora.png";
//image.save(filename);
QByteArray ba;
QBuffer buffer(&ba);
buffer.open(QIODevice::WriteOnly);
image.save(&buffer, "PNG");
m_webServer->addFile("/map/map/aurora.png", ba);
if (m_cesium) {
m_cesium->setLayerSettings("aurora", {"show"}, {m_settings.m_displayAurora});
}
}
void MapGUI::pathUpdated(const QString& radarPath, const QString& satellitePath)
{
m_radarPath = radarPath;
@ -1814,7 +1837,9 @@ void MapGUI::displayToolbar()
ui->displayNASAGlobalImagery->setVisible(overlayButtons);
ui->displayMUF->setVisible(!narrow && m_settings.m_map3DEnabled);
ui->displayfoF2->setVisible(!narrow && m_settings.m_map3DEnabled);
ui->displayAurora->setVisible(!narrow && m_settings.m_map3DEnabled);
ui->displayMagDec->setVisible(!narrow && m_settings.m_map3DEnabled);
ui->displayMaidenheadGrid->setVisible(!narrow && m_settings.m_map3DEnabled);
ui->save->setVisible(m_settings.m_map3DEnabled);
}
@ -1925,11 +1950,13 @@ void MapGUI::applyMap3DSettings(bool reloadMap)
m_cesium->showMUF(m_settings.m_displayMUF);
m_cesium->showfoF2(m_settings.m_displayfoF2);
m_cesium->showMagDec(m_settings.m_displayMagDec);
m_cesium->showMaidenheadGrid(m_settings.m_displayMaidenheadGrid);
m_cesium->showLayer("rain", m_settings.m_displayRain);
m_cesium->showLayer("clouds", m_settings.m_displayClouds);
m_cesium->showLayer("seaMarks", m_settings.m_displaySeaMarks);
m_cesium->showLayer("railways", m_settings.m_displayRailways);
m_cesium->showLayer("nasaGlobalImagery", m_settings.m_displayNASAGlobalImagery);
m_cesium->showLayer("aurora", m_settings.m_displayAurora);
applyNASAGlobalImagerySettings();
m_objectMapModel.allUpdated();
m_imageMapModel.allUpdated();
@ -1941,9 +1968,15 @@ void MapGUI::applyMap3DSettings(bool reloadMap)
if (ionosondeItemSettings) {
m_giro->getDataPeriodically(ionosondeItemSettings->m_enabled ? 2 : 0);
}
if (m_aurora) {
m_aurora->getDataPeriodically(m_settings.m_displayAurora ? 30 : 0);
}
#else
ui->displayMUF->setVisible(false);
ui->displayfoF2->setVisible(false);
ui->displayAurora->setVisible(false);
ui->displayMagDec->setVisible(false);
ui->displayMaidenheadGrid->setVisible(false);
m_objectMapModel.allUpdated();
m_imageMapModel.allUpdated();
m_polygonMapModel.allUpdated();
@ -2015,11 +2048,16 @@ void MapGUI::init3DMap()
m_cesium->showMUF(m_settings.m_displayMUF);
m_cesium->showfoF2(m_settings.m_displayfoF2);
m_cesium->showMagDec(m_settings.m_displayMagDec);
m_cesium->showMaidenheadGrid(m_settings.m_displayMaidenheadGrid);
m_cesium->setViewFirstPerson(m_settings.m_viewFirstPerson);
m_cesium->showPFD(m_settings.m_displayPFD);
m_cesium->showLayer("rain", m_settings.m_displayRain);
m_cesium->showLayer("clouds", m_settings.m_displayClouds);
m_cesium->showLayer("seaMarks", m_settings.m_displaySeaMarks);
m_cesium->showLayer("railways", m_settings.m_displayRailways);
m_cesium->showLayer("aurora", m_settings.m_displayAurora);
applyNASAGlobalImagerySettings();
if (!m_radarPath.isEmpty()) {
@ -2066,7 +2104,9 @@ void MapGUI::displaySettings()
m_displayMUF->setChecked(m_settings.m_displayMUF);
ui->displayfoF2->setChecked(m_settings.m_displayfoF2);
m_displayfoF2->setChecked(m_settings.m_displayfoF2);
ui->displayAurora->setChecked(m_settings.m_displayAurora);
ui->displayMagDec->setChecked(m_settings.m_displayMagDec);
ui->displayMaidenheadGrid->setChecked(m_settings.m_displayMaidenheadGrid);
m_objectMapModel.setDisplayNames(m_settings.m_displayNames);
m_objectMapModel.setDisplaySelectedGroundTracks(m_settings.m_displaySelectedGroundTracks);
m_objectMapModel.setDisplayAllGroundTracks(m_settings.m_displayAllGroundTracks);
@ -2366,6 +2406,26 @@ void MapGUI::on_displayfoF2_clicked(bool checked)
if (m_cesium && !m_settings.m_displayfoF2) {
m_cesium->showfoF2(m_settings.m_displayfoF2);
}
void MapGUI::on_displayAurora_clicked(bool checked)
{
if (this->sender() != ui->displayAurora) {
ui->displayAurora->setChecked(checked);
}
if (this->sender() != m_displayAurora) {
m_displayAurora->setChecked(checked);
}
m_settings.m_displayAurora = checked;
// Only call show if disabling, so we don't get two updates
// (as getDataPeriodically results in a call to showLayer when the data is available)
if (m_aurora) {
m_aurora->getDataPeriodically(m_settings.m_displayAurora ? 30 : 0);
}
if (m_cesium && !m_settings.m_displayAurora) {
m_cesium->showLayer("aurora", m_settings.m_displayAurora);
}
applySetting("displayAurora");
}
void MapGUI::on_displayMagDec_clicked(bool checked)
{
if (this->sender() != ui->displayMagDec) {
@ -2438,10 +2498,21 @@ void MapGUI::createLayersMenu()
m_displayfoF2->setToolTip("Display F2 layer critical frequency contours");
connect(m_displayfoF2, &QAction::triggered, this, &MapGUI::on_displayfoF2_clicked);
m_displayAurora = menu->addAction("Aurora");
m_displayAurora->setCheckable(true);
m_displayAurora->setToolTip("Display aurora prediction");
connect(m_displayAurora, &QAction::triggered, this, &MapGUI::on_displayAurora_clicked);
m_displayMagDec = menu->addAction("Mag Dec");
m_displayMagDec->setCheckable(true);
m_displayMagDec->setToolTip("Display magnetic declination");
connect(m_displayMagDec, &QAction::triggered, this, &MapGUI::on_displayMagDec_clicked);
m_displayMaidenheadGrid = menu->addAction("Maidenhead grid");
m_displayMaidenheadGrid->setCheckable(true);
m_displayMaidenheadGrid->setToolTip("Display magnetic declination");
connect(m_displayMaidenheadGrid, &QAction::triggered, this, &MapGUI::on_displayMaidenheadGrid_clicked);
ui->layersMenu->setMenu(menu);
}
@ -2916,7 +2987,9 @@ void MapGUI::makeUIConnections()
QObject::connect(ui->nasaGlobalImageryOpacity, qOverload<int>(&QDial::valueChanged), this, &MapGUI::on_nasaGlobalImageryOpacity_valueChanged);
QObject::connect(ui->displayMUF, &ButtonSwitch::clicked, this, &MapGUI::on_displayMUF_clicked);
QObject::connect(ui->displayfoF2, &ButtonSwitch::clicked, this, &MapGUI::on_displayfoF2_clicked);
QObject::connect(ui->displayAurora, &ButtonSwitch::clicked, this, &MapGUI::on_displayAurora_clicked);
QObject::connect(ui->displayMagDec, &ButtonSwitch::clicked, this, &MapGUI::on_displayMagDec_clicked);
QObject::connect(ui->displayMaidenheadGrid, &ButtonSwitch::clicked, this, &MapGUI::on_displayMaidenheadGrid_clicked);
QObject::connect(ui->find, &QLineEdit::returnPressed, this, &MapGUI::on_find_returnPressed);
QObject::connect(ui->maidenhead, &QToolButton::clicked, this, &MapGUI::on_maidenhead_clicked);
QObject::connect(ui->save, &QToolButton::clicked, this, &MapGUI::on_save_clicked);

8
plugins/feature/map/mapgui.h
View File

@ -40,6 +40,7 @@
#include "util/messagequeue.h"
#include "util/giro.h"
#include "util/azel.h"
#include "util/aurora.h"
#include "util/openaip.h"
#include "util/ourairportsdb.h"
#include "util/waypoints.h"
@ -173,6 +174,7 @@ public:
void addRadioTimeTransmitters();
void addNAT();
void addRadar();
void addAurora();
void addIonosonde();
void addBroadcast();
void addDAB();
@ -228,6 +230,7 @@ private:
QDateTime m_giroDateTime;
QString m_giroRunId;
QHash<QString, IonosondeStation *> m_ionosondeStations;
Aurora *m_aurora;
QSharedPointer<const QList<NavAid *>> m_navAids;
QSharedPointer<const QList<Airspace *>> m_airspaces;
QSharedPointer<const QHash<int, AirportInformation *>> m_airportInfo;
@ -252,7 +255,9 @@ private:
QAction *m_displayNASAGlobalImagery;
QAction *m_displayMUF;
QAction *m_displayfoF2;
QAction *m_displayAurora;
QAction *m_displayMagDec;
QAction *m_displayMaidenheadGrid;
QString m_radarPath;
QString m_satellitePath;
@ -331,7 +336,9 @@ private slots:
void on_displayNASAGlobalImagery_clicked(bool checked=false);
void on_nasaGlobalImageryIdentifier_currentIndexChanged(int index);
void on_nasaGlobalImageryOpacity_valueChanged(int index);
void on_displayAurora_clicked(bool checked=false);
void on_displayMagDec_clicked(bool checked=false);
void on_displayMaidenheadGrid_clicked(bool checked=false);
void on_layersMenu_clicked();
void on_find_returnPressed();
void on_maidenhead_clicked();
@ -367,6 +374,7 @@ private slots:
void nasaGlobalImageryMetaDataUpdated(const NASAGlobalImagery::MetaData& metaData);
void nasaGlobalImageryLegendAvailable(const QString& url, const QByteArray& data);
void nasaGlobalImageryHTMLAvailable(const QString& url, const QByteArray& data);
void auroraUpdated(const QImage& image);
void navAidsUpdated();
void airspacesUpdated();
void airportsUpdated();

2
sdrbase/CMakeLists.txt
View File

@ -222,6 +222,7 @@ set(sdrbase_SOURCES
util/ax25.cpp
util/aprs.cpp
util/astronomy.cpp
util/aurora.cpp
util/azel.cpp
util/baudot.cpp
util/callsign.cpp
@ -474,6 +475,7 @@ set(sdrbase_HEADERS
util/ais.h
util/android.h
util/aprsfi.h
util/aurora.h
util/aviationweather.h
util/ax25.h
util/aprs.h

430
sdrbase/util/aurora.cpp Normal file
View File

@ -0,0 +1,430 @@
///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2025 Jon Beniston, M7RCE <jon@beniston.com> //
// //
// 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 "aurora.h"
#include <QDebug>
#include <QUrl>
#include <QNetworkReply>
#include <QNetworkDiskCache>
// Green -> Yellow -> Red
const unsigned char Aurora::m_colorMap[] = {
0, 255, 0,
1, 255, 0,
3, 255, 0,
5, 255, 0,
7, 255, 0,
9, 255, 0,
11, 255, 0,
13, 255, 0,
15, 255, 0,
17, 255, 0,
19, 255, 0,
21, 255, 0,
23, 255, 0,
25, 255, 0,
27, 255, 0,
29, 255, 0,
31, 255, 0,
33, 255, 0,
35, 255, 0,
37, 255, 0,
39, 255, 0,
41, 255, 0,
43, 255, 0,
45, 255, 0,
47, 255, 0,
49, 255, 0,
51, 255, 0,
53, 255, 0,
55, 255, 0,
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Aurora::Aurora()
{
connect(&m_dataTimer, &QTimer::timeout, this, &Aurora::getData);
m_networkManager = new QNetworkAccessManager();
connect(m_networkManager, &QNetworkAccessManager::finished, this, &Aurora::handleReply);
QStringList locations = QStandardPaths::standardLocations(QStandardPaths::AppDataLocation);
QDir writeableDir(locations[0]);
if (!writeableDir.mkpath(QStringLiteral("cache") + QDir::separator() + QStringLiteral("aurora"))) {
qDebug() << "Failed to create cache/aurora";
}
m_cache = new QNetworkDiskCache();
m_cache->setCacheDirectory(locations[0] + QDir::separator() + QStringLiteral("cache") + QDir::separator() + QStringLiteral("giro"));
m_cache->setMaximumCacheSize(100000000);
m_networkManager->setCache(m_cache);
}
Aurora::~Aurora()
{
disconnect(&m_dataTimer, &QTimer::timeout, this, &Aurora::getData);
disconnect(m_networkManager, &QNetworkAccessManager::finished, this, &Aurora::handleReply);
delete m_networkManager;
}
Aurora* Aurora::create(const QString& service)
{
if (service == "noaa.gov")
{
return new Aurora();
}
else
{
qDebug() << "Aurora::create: Unsupported service: " << service;
return nullptr;
}
}
void Aurora::getDataPeriodically(int periodInMins)
{
if (periodInMins > 0)
{
m_dataTimer.setInterval(periodInMins*60*1000);
m_dataTimer.start();
getData();
}
else
{
m_dataTimer.stop();
}
}
void Aurora::getData()
{
QUrl url(QString("https://services.swpc.noaa.gov/json/ovation_aurora_latest.json"));
m_networkManager->get(QNetworkRequest(url));
}
void Aurora::handleReply(QNetworkReply* reply)
{
if (reply)
{
if (!reply->error())
{
QJsonDocument document = QJsonDocument::fromJson(reply->readAll());
QString fileName = reply->url().fileName();
if (fileName == "ovation_aurora_latest.json")
{
handleJSON(document);
}
else
{
qDebug() << "Aurora::handleReply: unexpected filename: " << fileName;
}
}
else
{
qDebug() << "Aurora::handleReply: error: " << reply->error();
}
reply->deleteLater();
}
else
{
qDebug() << "Aurora::handleReply: reply is null";
}
}
void Aurora::handleJSON(QJsonDocument& document)
{
if (document.isObject())
{
QJsonObject obj = document.object();
if (obj.contains(QStringLiteral("coordinates")))
{
QJsonArray array = obj.value(QStringLiteral("coordinates")).toArray();
// Longitude: [0, 359]
// Latitude: [-90, 90] including 0
QImage image(360, 181, QImage::Format_ARGB32);
image.fill(qRgba(0, 0, 0, 0));
for (auto valRef : array)
{
if (valRef.isArray())
{
QJsonArray coords = valRef.toArray();
if (coords.size() == 3)
{
int longitude = coords[0].toInt();
int latitude = coords[1].toInt();
int probabilty = coords[2].toInt();
const int min = 5; // Don't display anything for <5% probabilty
const int alphaMax = 180; // Always slightly transparent
if ((probabilty > min) && (std::abs(latitude) > 5)) // Ignore data around equator, as can incorrectly predict aurora
{
// Scale from 5%-100% to 256 entry colormap
int index = (int) ((probabilty - min) / (100.0f - min) * 255.0f);
// Make lowest probababilties a bit more transparent
int alpha = index < 25 ? (int)((index / 25.0f) * alphaMax) : alphaMax;
//qDebug() << probabilty << index << alpha;
image.setPixel((longitude + 180) % 360, 180 - (latitude + 90), qRgba(m_colorMap[index*3], m_colorMap[index*3+1], m_colorMap[index*3+2], alpha));
}
}
else
{
qDebug() << "Aurora::handleJSON: Expected coordinates array to be of length 3";
}
}
}
emit dataUpdated(image);
}
else
{
qDebug() << "Aurora::handleJSON: No coordinates";
}
}
else
{
qDebug() << "Aurora::handleJSON: Expected an object";
}
}

68
sdrbase/util/aurora.h Normal file
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@ -0,0 +1,68 @@
///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2025 Jon Beniston, M7RCE <jon@beniston.com> //
// //
// 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/>. //
///////////////////////////////////////////////////////////////////////////////////
#ifndef INCLUDE_AURORA_H
#define INCLUDE_AURORA_H
#include <QtCore>
#include <QTimer>
#include <QJsonDocument>
#include <QImage>
#include "export.h"
class QNetworkAccessManager;
class QNetworkReply;
class QNetworkDiskCache;
// Aurora prediction
// Data from https://services.swpc.noaa.gov/
class SDRBASE_API Aurora : public QObject
{
Q_OBJECT
protected:
Aurora();
public:
static Aurora* create(const QString& service="noaa.gov");
~Aurora();
void getDataPeriodically(int periodInMins=30);
public slots:
void getData();
private slots:
void handleReply(QNetworkReply* reply);
signals:
void dataUpdated(const QImage& data); // Called when new data available.
private:
void handleJSON(QJsonDocument& document);
QTimer m_dataTimer; // Timer for periodic updates
QNetworkAccessManager *m_networkManager;
QNetworkDiskCache *m_cache;
static const unsigned char m_colorMap[256*3];
};
#endif /* INCLUDE_AURORA_H */