In short, this is new:

- ImageSequencer class added, requires planetary data service files (not added to openspace-data, too large)
   : Given current time returns path to specific image in dataset for projection.
- Changes to RenderablePlanetProjection class to accomodate sequencing
- Fixed normal computation in reverse-mapping stage
- Rudimental target recognition (will prob. become part of separate class at some point - since both fov & proj classes do similar things)

Next up:
- Redo pluto mockup visualization & begin spreadsheet reader for instrument-switching.

include/openspace/util/imagesequencer.h

@@ -36,22 +36,23 @@ namespace openspace {
 
 class ImageSequencer {
 public:
-    // initializers
-	ImageSequencer(const std::string dir);
-	~ImageSequencer();
-
+	static ImageSequencer& ref();
 	bool loadSequence(const std::string dir);
 
 	void testStartTimeMap();
 
-    bool initialize();
+	static void initialize();
+	static void deinitialize();
+	bool sequenceReset();
 
 public:
 
 	void createImage(double t1, double t2, std::string path = "dummypath");
 	bool getImagePath(double& _currentTime, std::string& path);
 	bool getImagePath(std::string _currentTime, std::string& path);
+	//double _previousTime; // not sure if i wanna use this yet.
 
+	static ImageSequencer* _sequencer;
 };
 
 } // namespace openspace