finally fixed rotation bug,

some performance,

QtMeshViewer/main.cpp

@@ -1,11 +1,13 @@
 #include "Header\MainWindow.h"
 #include <QtWidgets/QApplication>
 
+
 int main(int argc, char *argv[])
 {
 	QApplication a(argc, argv);
 
 	MainWindow w;
 	w.show();
+
 	return a.exec();
 }