Finalize `DuplicateSurfaceCmd`

src/Commands/DuplicateSurfaceCmd.cpp

@@ -9,16 +9,15 @@ DuplicateSurfaceCmd::DuplicateSurfaceCmd(BaseSurface * surface, SurfaceManager *
 }
 
 void DuplicateSurfaceCmd::exec(){
-	//_prevSelectedSurface = _surfaceManager->getSelectedSurface();
-	//_surfaceManager->selectPrevSurface();
-	_surfaceManager->duplicateSurface(_surface);
+	_duplicate = _surfaceManager->duplicateSurface(_surface);
+	_duplicate->moveBy(ofVec2f(10.0f, 10.0f));
+	_surfaceManager->selectSurface(_duplicate);
 }
 
 void DuplicateSurfaceCmd::undo(){
 	ofLogNotice("DuplicateSurfaceCmd", "undo");
-	//_surfaceManager->selectSurface(_prevSelectedSurface);
-	//_prevSelectedSurface = 0;
-	//_surfaceManager->d
+	_surfaceManager->selectSurface(_surface);
+	_surfaceManager->deleteSurface(_duplicate);
 }
 
 } // namespace piMapper

src/Commands/DuplicateSurfaceCmd.h

@@ -20,6 +20,7 @@ class DuplicateSurfaceCmd : public BaseUndoCmd {
 
 	private:
 		BaseSurface * _surface;
+		BaseSurface * _duplicate;
 		SurfaceManager * _surfaceManager;
 
 };