Add a circle which shows where on the sky an image points at

data/assets/hoverCircle.asset

@@ -0,0 +1,12 @@
+local assetHelper = asset.require('util/asset_helper')
+
+  local spec = {
+      Identifier = "HoverCircle",
+      Type = "ScreenSpaceImageLocal",
+      Name = "HoverCircle",
+      FaceCamera = false,
+      Scale= 0.015,
+      Enabled = false,
+      TexturePath = "D:/Ylvas/OpenSpace/data/assets/circle.png"
+  };
+assetHelper.registerScreenSpaceRenderables(asset, { spec })

modules/skybrowser/skybrowsermodule.cpp

@@ -71,6 +71,22 @@ namespace openspace {
                 "string or list of strings",
                 "Add one or multiple exoplanet systems to the scene, as specified by the "
                 "input. An input string should be the name of the system host star"
+            }, 
+            {
+                "moveCircleToHoverImage",
+                &skybrowser::luascriptfunctions::moveCircleToHoverImage,
+                {},
+                "string or list of strings",
+                "Add one or multiple exoplanet systems to the scene, as specified by the "
+                "input. An input string should be the name of the system host star"
+            },
+            {
+                "disableHoverCircle",
+                &skybrowser::luascriptfunctions::disableHoverCircle,
+                {},
+                "string or list of strings",
+                "Add one or multiple exoplanet systems to the scene, as specified by the "
+                "input. An input string should be the name of the system host star"
             },
             {
                 "move",

modules/skybrowser/skybrowsermodule_lua.inl

@@ -15,6 +15,7 @@
 #include <sstream>
 #include <modules/skybrowser/include/screenspaceskybrowser.h>
 #include <modules/skybrowser/include/screenspaceskytarget.h>
+#include <modules/base/rendering/screenspaceimagelocal.h>
 #include <openspace/interaction/navigationhandler.h>
 #include <openspace/util/camera.h>
 #include <thread> 
@@ -61,6 +62,45 @@ namespace openspace::skybrowser::luascriptfunctions {
 		browser->sendMessageToWWT(browser->createMessageForSettingForegroundOpacityWWT(100));
 		return 1;
 	}
+
+    int moveCircleToHoverImage(lua_State* L) {
+        // Load image
+        ghoul::lua::checkArgumentsAndThrow(L, 1, "lua::moveCircleToHoverImage");
+        const int i = ghoul::lua::value<int>(L, 1);
+
+        ScreenSpaceImageLocal* hoverCircle = dynamic_cast<ScreenSpaceImageLocal*>(global::renderEngine->screenSpaceRenderable("HoverCircle"));
+        hoverCircle->property("Enabled")->set(true);
+        SkyBrowserModule* module = global::moduleEngine->module<SkyBrowserModule>();
+        const ImageData& resultImage = module->getWWTDataHandler()->getLoadedImages()[i];
+
+        if (resultImage.hasCoords) {
+
+            glm::dvec3 imageCoordsGalactic = icrsToGalacticCartesian(resultImage.celestCoords.x, resultImage.celestCoords.y, 1.0);
+            // This is a duplicate of target function "lookAtGalacticCoord". Probably should rewrite this so there are no duplicates...
+            glm::dmat4 cameraInvRotMat = global::navigationHandler->camera()->viewRotationMatrix();
+            glm::dvec3 viewDirectionLocal = cameraInvRotMat * glm::dvec4(imageCoordsGalactic, 1.f);
+
+            glm::dvec2 angleCoordsLocal = glm::dvec2(atan(viewDirectionLocal.x / viewDirectionLocal.z), atan(viewDirectionLocal.y / viewDirectionLocal.z));
+            double projPlaneDistance = -2.1f;
+            glm::dvec2 imageCoordsScreenSpace = glm::dvec2(projPlaneDistance * tan(angleCoordsLocal.x), projPlaneDistance * tan(angleCoordsLocal.y));
+            // Translate target
+            hoverCircle->translate(glm::vec2(imageCoordsScreenSpace) - hoverCircle->getScreenSpacePosition(), hoverCircle->getScreenSpacePosition());
+        }
+        
+        return 1;
+    }
+
+    int disableHoverCircle(lua_State* L) {
+        // Load image
+        ghoul::lua::checkArgumentsAndThrow(L, 0, "lua::disableHoverCircle");
+        LINFO("YO");
+        ScreenSpaceImageLocal* hoverCircle = dynamic_cast<ScreenSpaceImageLocal*>(global::renderEngine->screenSpaceRenderable("HoverCircle"));
+        LINFO("YAH");
+        hoverCircle->property("Enabled")->set(false);
+        LINFO("Yu");
+        return 1;
+    }
+
 	
 	int followCamera(lua_State* L) {
 		// Load images from url

modules/skybrowser/src/wwtdatahandler.cpp

@@ -6,10 +6,6 @@
 
 namespace {
     constexpr const char* _loggerCat = "WWTDataHandler";
-
-
-
-
 } //namespace
 
 namespace openspace {