converted to proper directory structure

.gitignore

@@ -5,3 +5,5 @@ ui_mainwindow.h
 untitled.mtl
 untitled.obj
 moc*
+build/
+bin/

3dobj-renderer.pro

@@ -4,10 +4,6 @@
 
 TEMPLATE = app
 TARGET = 3dobj-renderer
-INCLUDEPATH += . \
-	/usr/include/GL
-DEPENDPATH += . \
-	/usr/include/GL
 
 # You can make your code fail to compile if you use deprecated APIs.
 # In order to do so, uncomment the following line.
@@ -17,7 +13,11 @@ DEPENDPATH += . \
 #DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
 
 # Input
-SOURCES += main.cpp opglwidget.cpp obj.cpp
-HEADERS += ui_mainwindow.h opglwidget.h obj.h
-FORMS += mainwindow.ui
+SOURCES += src/main.cpp src/opglwidget.cpp src/obj.cpp
+HEADERS += include/opglwidget.h include/obj.h
+FORMS += forms/mainwindow.ui
+MOC_DIR += build/moc
+UI_DIR += include/
+OBJECTS_DIR += build/objects
 QT += core gui widgets
+DESTDIR = $$PWD/bin

src/main.cpp

@@ -1,7 +1,7 @@
 #include <QtWidgets/QApplication>
 #include <QMainWindow>
 #include <QTimer>
-#include "ui_mainwindow.h"
+#include "include/ui_mainwindow.h"
 
 int main(int argc, char **argv) {
 	QApplication app(argc, argv);

src/obj.cpp

@@ -1,4 +1,4 @@
-#include "obj.h"
+#include "include/obj.h"
 #include <fstream>
 #include <vector>
 #include <string>

src/opglwidget.cpp

@@ -1,4 +1,4 @@
-#include "opglwidget.h"
+#include "include/opglwidget.h"
 #include <GL/gl.h>
 #include <GL/glu.h>
 #include <math.h>