From 2ffd9d8418d613aaca6f31ed4e7193ea3b93fde8 Mon Sep 17 00:00:00 2001
From: Muaz Ahmad <m.ahmed_2000@hotmail.com>
Date: Thu, 4 May 2023 13:21:34 +0500
Subject: [PATCH] Separated movement from draw timer

---
 main.cpp           |  9 ++++++---
 moc_opglwidget.cpp | 24 ++++++++++++++----------
 opglwidget.cpp     |  7 ++++++-
 opglwidget.h       |  1 +
 4 files changed, 27 insertions(+), 14 deletions(-)

diff --git a/main.cpp b/main.cpp
index f6862af..223bfad 100644
--- a/main.cpp
+++ b/main.cpp
@@ -8,9 +8,12 @@ int main(int argc, char **argv) {
 	QMainWindow w;
 	Ui::MainWindow ui;
 	ui.setupUi(&w);
-	QTimer timer;
-	w.connect(&timer, SIGNAL(timeout()), ui.openGLWidget, SLOT(paintGL()));
-	timer.start(16);
+	QTimer timer_draw;
+	QTimer timer_cam;
+	w.connect(&timer_draw, SIGNAL(timeout()), ui.openGLWidget, SLOT(paintGL()));
+	w.connect(&timer_cam, SIGNAL(timeout()), ui.openGLWidget, SLOT(update_camera()));
+	timer_draw.start(16);
+	timer_cam.start(16);
 	w.show();
 	return app.exec();
 }
diff --git a/moc_opglwidget.cpp b/moc_opglwidget.cpp
index f5d5e4a..85488e5 100644
--- a/moc_opglwidget.cpp
+++ b/moc_opglwidget.cpp
@@ -22,8 +22,8 @@ QT_BEGIN_MOC_NAMESPACE
 QT_WARNING_PUSH
 QT_WARNING_DISABLE_DEPRECATED
 struct qt_meta_stringdata_OPGLWidget_t {
-    QByteArrayData data[3];
-    char stringdata0[20];
+    QByteArrayData data[4];
+    char stringdata0[34];
 };
 #define QT_MOC_LITERAL(idx, ofs, len) \
     Q_STATIC_BYTE_ARRAY_DATA_HEADER_INITIALIZER_WITH_OFFSET(len, \
@@ -34,10 +34,11 @@ static const qt_meta_stringdata_OPGLWidget_t qt_meta_stringdata_OPGLWidget = {
     {
 QT_MOC_LITERAL(0, 0, 10), // "OPGLWidget"
 QT_MOC_LITERAL(1, 11, 7), // "paintGL"
-QT_MOC_LITERAL(2, 19, 0) // ""
+QT_MOC_LITERAL(2, 19, 0), // ""
+QT_MOC_LITERAL(3, 20, 13) // "update_camera"
 
     },
-    "OPGLWidget\0paintGL\0"
+    "OPGLWidget\0paintGL\0\0update_camera"
 };
 #undef QT_MOC_LITERAL
 
@@ -47,7 +48,7 @@ static const uint qt_meta_data_OPGLWidget[] = {
        8,       // revision
        0,       // classname
        0,    0, // classinfo
-       1,   14, // methods
+       2,   14, // methods
        0,    0, // properties
        0,    0, // enums/sets
        0,    0, // constructors
@@ -55,9 +56,11 @@ static const uint qt_meta_data_OPGLWidget[] = {
        0,       // signalCount
 
  // slots: name, argc, parameters, tag, flags
-       1,    0,   19,    2, 0x0a /* Public */,
+       1,    0,   24,    2, 0x0a /* Public */,
+       3,    0,   25,    2, 0x0a /* Public */,
 
  // slots: parameters
+    QMetaType::Void,
     QMetaType::Void,
 
        0        // eod
@@ -70,6 +73,7 @@ void OPGLWidget::qt_static_metacall(QObject *_o, QMetaObject::Call _c, int _id,
         (void)_t;
         switch (_id) {
         case 0: _t->paintGL(); break;
+        case 1: _t->update_camera(); break;
         default: ;
         }
     }
@@ -105,13 +109,13 @@ int OPGLWidget::qt_metacall(QMetaObject::Call _c, int _id, void **_a)
     if (_id < 0)
         return _id;
     if (_c == QMetaObject::InvokeMetaMethod) {
-        if (_id < 1)
+        if (_id < 2)
             qt_static_metacall(this, _c, _id, _a);
-        _id -= 1;
+        _id -= 2;
     } else if (_c == QMetaObject::RegisterMethodArgumentMetaType) {
-        if (_id < 1)
+        if (_id < 2)
             *reinterpret_cast<int*>(_a[0]) = -1;
-        _id -= 1;
+        _id -= 2;
     }
     return _id;
 }
diff --git a/opglwidget.cpp b/opglwidget.cpp
index 993c12a..af870e1 100644
--- a/opglwidget.cpp
+++ b/opglwidget.cpp
@@ -26,7 +26,6 @@ void OPGLWidget::initializeGL() {
 }
 
 void OPGLWidget::paintGL() {
-	for (int i = 0; i < 3; i++) {loc[i] += vel[i];};
 	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 	glLoadIdentity();
 	reorient();
@@ -72,3 +71,9 @@ void OPGLWidget::resizeGL(int w, int h) {
 	glFrustum(-right, right, -top, top, 0.1f, 100.0f);
 	glMatrixMode(GL_MODELVIEW);
 }
+
+void OPGLWidget::update_camera() {
+	for (int i = 0; i < 3; i++) {
+		loc[i] += vel[i];
+	};
+}
diff --git a/opglwidget.h b/opglwidget.h
index c427934..667b33d 100644
--- a/opglwidget.h
+++ b/opglwidget.h
@@ -8,6 +8,7 @@ public:
 	OPGLWidget(QWidget *parent) : QOpenGLWidget(parent) {}
 public slots:
 	void paintGL();
+	void update_camera();
 protected:
 	void initializeGL();
 	void resizeGL(int w, int h);