Sky: add button to jump to selected sky origin

Author: oesterlehlrs

src/OpenCOVER/plugins/general/Sky/Sky.cpp

@@ -169,6 +169,23 @@ bool Sky::init()
             else
                 m_mode = TEXTURE; });
 
+    jumpToSkyButton = new ui::Button(skyGroup, "jumpToSky");
+    jumpToSkyButton->setText("Jump to Sky");
+    jumpToSkyButton->setCallback([this](bool state)
+        {
+            if (state)
+            {
+                int selection = skyList->selectedIndex();
+                if (selection >= skyListNameStart)
+                {
+                    const auto &sky = m_skies[selection - skyListNameStart];
+                    osg::Vec3d globalSkyOrigin(sky.longitude, sky.latitude, sky.altitude);
+                    osg::Vec3 projectSkyOrigin = GeoData::instance()->globalToProject(globalSkyOrigin);
+                    GeoData::instance()->jumpToLocation(projectSkyOrigin);
+                }
+                jumpToSkyButton->setState(false);
+            } });
+
     northAngle = 0;
     update();
 
@@ -234,7 +251,7 @@ void Sky::loadSkies()
     updateSkyMenu();
 }
 
-void parseExifData(const std::filesystem::path &path, double &longitude, double &latitude, double &trueNorth)
+void parseExifData(const std::filesystem::path &path, double &longitude, double &latitude, double &altitude, double &trueNorth)
 {
     std::unique_ptr<Exiv2::Image> image = Exiv2::ImageFactory::open(path.string().c_str());
     if (!image)
@@ -263,6 +280,12 @@ void parseExifData(const std::filesystem::path &path, double &longitude, double
         longitude = deg.first / (1.0 * deg.second) + min.first / (60.0 * min.second) + sec.first / (3600.0 * sec.second);
     }
 
+    auto altIt = exif.findKey(Exiv2::ExifKey("Exif.GPSInfo.GPSAltitude"));
+    if (altIt != exif.end())
+    {
+        altitude = exif["Exif.GPSInfo.GPSAltitude"].toFloat();
+    }
+
     Exiv2::XmpData &xmpData = image->xmpData();
     if (!xmpData.empty())
     {
@@ -295,16 +318,16 @@ std::optional<std::reference_wrapper<SkyEntry>> Sky::addSkyFile(std::filesystem:
         return std::nullopt;
     }
 
-    double latitude = 0, longitude = 0, trueNorth = 0;
-    parseExifData(path, longitude, latitude, trueNorth);
+    double latitude = 0, longitude = 0, altitude = 0, trueNorth = 0;
+    parseExifData(path, longitude, latitude, altitude, trueNorth);
 
     trueNorth = std::fmod(trueNorth + 360.0 + 180.0, 360.0) - 180.0;
     longitude = std::fmod(longitude + 360.0 + 180.0, 360.0) - 180.0;
     latitude = std::clamp(latitude, -90.0, 90.0);
 
-    std::cout << "Parsed from EXIF: latitude=" << latitude << " longitude=" << longitude << " trueNorth=" << trueNorth << std::endl;
+    std::cout << "EXIF: Parsed " << path.parent_path().filename().string() << "/" << fileName << " latitude=" << latitude << " longitude=" << longitude << " altitude=" << altitude << " trueNorth=" << trueNorth << std::endl;
 
-    return m_skies.emplace_back(SkyEntry(name, std::regex_replace(name, std::regex("/"), " → "), path.string(), longitude, latitude, trueNorth));
+    return m_skies.emplace_back(SkyEntry(name, std::regex_replace(name, std::regex("/"), " → "), path.string(), longitude, latitude, altitude, trueNorth));
 
     return std::nullopt;
 }

src/OpenCOVER/plugins/general/Sky/Sky.h

@@ -32,8 +32,8 @@
 struct SkyEntry
 {
 public:
-    SkyEntry(const std::string &name, const std::string &displayName, const std::string &fileName, double longitude, double latitude, double trueNorth)
-        : name(name), displayName(displayName), fileName(fileName), longitude(longitude), latitude(latitude), trueNorth(trueNorth) {}
+    SkyEntry(const std::string &name, const std::string &displayName, const std::string &fileName, double longitude, double latitude, double altitude, double trueNorth)
+        : name(name), displayName(displayName), fileName(fileName), longitude(longitude), latitude(latitude), altitude(altitude), trueNorth(trueNorth) {}
     std::string name;
     std::string displayName;
     std::string fileName;
@@ -43,6 +43,9 @@ struct SkyEntry
     double latitude = 0.0;
     double trueNorth = 0.0;
 
+    // in meters
+    double altitude = 0.0;
+
     osg::ref_ptr<osg::Texture2D> texture;
 };
 
@@ -110,6 +113,7 @@ class Sky : public opencover::coVRPlugin, public opencover::ui::Owner
     opencover::ui::SelectionList *skyList;
     int skyListNameStart = 0;
     opencover::ui::Button *autoSkyButton;
+    opencover::ui::Button *jumpToSkyButton;
     opencover::ui::Slider *skyNorthSlider = nullptr;
 
     float northAngle;