Added SyncBuffer class

- Added SyncBuffer class for easy and effecient synchronization
- Small changes to Camera class
- Forward declared a few classes to minimize dependencies

include/openspace/engine/openspaceengine.h

@@ -29,13 +29,11 @@
 
 // sgct header has to be included before all others due to Windows header
 #define SGCT_WINDOWS_INCLUDE
-#include "sgct.h"
+#include <sgct.h>
 
 #include <openspace/interaction/interactionhandler.h>
 #include <openspace/rendering/renderengine.h>
 #include <openspace/engine/configurationmanager.h>
-#include <openspace/interaction/luaconsole.h>
-//#include <ghoul/misc/dictionary.h>
 
 #include <ghoul/opencl/clcontext.h>
 #include <ghoul/opencl/clcommandqueue.h>
@@ -47,15 +45,14 @@
 
 #include <openspace/flare/flare.h>
 
-#define  ABUFFER_SINGLE_LINKED    1
-#define  ABUFFER_FIXED            2
-#define  ABUFFER_DYNAMIC          3
-#define  ABUFFER_IMPLEMENTATION   ABUFFER_SINGLE_LINKED
-
 // #define OPENSPACE_VIDEO_EXPORT
 
 namespace openspace {
 
+// Forward declare to minimize dependencies
+class SyncBuffer;
+class LuaConsole;
+
 namespace scripting {
 	class ScriptEngine;
 }
@@ -117,7 +114,7 @@ private:
     // ScriptEngine* _scriptEngine;
     ghoul::opencl::CLContext _context;
 
-    sgct::SharedVector<char> _synchronizationBuffer;
+	SyncBuffer* _syncBuffer;
 
 	bool _inputCommand;
 	LuaConsole* _console;