Adjust `GridWarpSurface` commands to not go less than 2 rows and cols

src/Application/ProjectionMappingState.cpp

@@ -83,7 +83,7 @@ void ProjectionMappingState::onKeyPressed(Application * app, ofKeyEventArgs & ar
 			if(app->getSurfaceManager()->getSelectedSurface()->getType() ==
 				SurfaceType::GRID_WARP_SURFACE){
 				
-				if(((GridWarpSurface *)app->getSurfaceManager()->getSelectedSurface())->getGridRows() > 1){
+				if(((GridWarpSurface *)app->getSurfaceManager()->getSelectedSurface())->getGridRows() > 2){
 					// TODO: The command should not require projection editor pointer
 					app->getCmdManager()->exec(
 						new RmGridRowCmd(
@@ -111,7 +111,7 @@ void ProjectionMappingState::onKeyPressed(Application * app, ofKeyEventArgs & ar
 			if(app->getSurfaceManager()->getSelectedSurface()->getType() ==
 				SurfaceType::GRID_WARP_SURFACE){
 				
-				if(((GridWarpSurface *)app->getSurfaceManager()->getSelectedSurface())->getGridCols() > 1){
+				if(((GridWarpSurface *)app->getSurfaceManager()->getSelectedSurface())->getGridCols() > 2){
 					// TODO: The command should not require projection editor pointer
 					app->getCmdManager()->exec(
 						new RmGridColCmd(

src/Commands/RmGridColCmd.cpp

@@ -12,7 +12,7 @@ void RmGridColCmd::exec(){
 
 	// TODO: Figure out nice math to not loose existing vertex positions
 	
-	if(_surface->getGridCols() > 1){
+	if(_surface->getGridCols() > 2){
 		_vertices = _surface->getVertices();
 		_texCoords = _surface->getTexCoords();
 		_surface->setGridCols(_surface->getGridCols() - 1);

src/Commands/RmGridRowCmd.cpp

@@ -12,7 +12,7 @@ void RmGridRowCmd::exec(){
 
 	// TODO: Figure out nice math to not loose existing vertex positions
 	
-	if(_surface->getGridRows() > 1){
+	if(_surface->getGridRows() > 2){
 		_vertices = _surface->getVertices();
 		_texCoords = _surface->getTexCoords();
 		_surface->setGridRows(_surface->getGridRows() - 1);