added Slots

A1/hellocube/cubewidget.cpp

 #include "cubewidget.h"
 
-#include <QOpenGLFunctions>
-
 CubeWidget::CubeWidget(QWidget *parent)
     : QGLWidget(QGLFormat(QGL::SampleBuffers), parent)
 {
@@ -22,13 +20,13 @@ void CubeWidget::initializeGL ()
 {
     glClearColor(0.0, 0.0, 0.0, 0.0);
     glEnable(GL_DEPTH_TEST);
-   glEnable(GL_CULL_FACE);
+    glEnable(GL_CULL_FACE);
 
 
     // enable default shading
-    glShadeModel(GL_FLAT);
+    showFlat();
 
-   // glEnable(GL_LIGHTING);
+    // glEnable(GL_LIGHTING);
     glEnable(GL_LIGHT0);
     static GLfloat lightPosition[4] = { 0.5, 0.0, 2.0, 1.0 };
     glLightfv(GL_LIGHT0, GL_POSITION, lightPosition);
@@ -41,45 +39,45 @@ void CubeWidget::paintGL ( )
     glLoadIdentity();
     glTranslatef(0.0f,0.0f,-3.0f);
     glRotated(45,1,0,0);
-     glRotated(45,0,1,0);
+    glRotated(45,0,1,0);
 
     glBegin(GL_QUADS);                                  // Draw A Quad
-            glColor3f(0.0f,1.0f,0.0f);
-            glVertex3f( 0.5f, 0.5f,-0.5f);
-            glVertex3f(-0.5f, 0.5f,-0.5f);
-            glVertex3f(-0.5f, 0.5f, 0.5f);
-            glVertex3f( 0.5f, 0.5f, 0.5f);
-
-            glColor3f(0.0f,1.0f,1.0f);
-            glVertex3f( 0.5f,-0.5f, 0.5f);
-            glVertex3f(-0.5f,-0.5f, 0.5f);
-            glVertex3f(-0.5f,-0.5f,-0.5f);
-            glVertex3f( 0.5f,-0.5f,-0.5f);
-
-            glColor3f(1.0f,0.0f,0.0f);
-            glVertex3f( 0.5f, 0.5f, 0.5f);
-            glVertex3f(-0.5f, 0.5f, 0.5f);
-            glVertex3f(-0.5f,-0.5f, 0.5f);
-            glVertex3f( 0.5f,-0.5f, 0.5f);
-
-            glColor3f(1.0f,0.0f,1.0f);
-            glVertex3f( 0.5f,-0.5f,-0.5f);
-            glVertex3f(-0.5f,-0.5f,-0.5f);
-            glVertex3f(-0.5f, 0.5f,-0.5f);
-            glVertex3f( 0.5f, 0.5f,-0.5f);
-
-            glColor3f(0.0f,0.0f,1.0f);
-            glVertex3f(-0.5f, 0.5f, 0.5f);
-            glVertex3f(-0.5f, 0.5f,-0.5f);
-            glVertex3f(-0.5f,-0.5f,-0.5f);
-            glVertex3f(-0.5f,-0.5f, 0.5f);
-
-            glColor3f(1.0f,1.0f,0.0f);
-            glVertex3f( 0.5f, 0.5f,-0.5f);
-            glVertex3f( 0.5f, 0.5f, 0.5f);
-            glVertex3f( 0.5f,-0.5f, 0.5f);
-            glVertex3f( 0.5f,-0.5f,-0.5f);
-        glEnd();
+    glColor3f(0.0f,1.0f,0.0f);
+    glVertex3f( 0.5f, 0.5f,-0.5f);
+    glVertex3f(-0.5f, 0.5f,-0.5f);
+    glVertex3f(-0.5f, 0.5f, 0.5f);
+    glVertex3f( 0.5f, 0.5f, 0.5f);
+
+    glColor3f(0.0f,1.0f,1.0f);
+    glVertex3f( 0.5f,-0.5f, 0.5f);
+    glVertex3f(-0.5f,-0.5f, 0.5f);
+    glVertex3f(-0.5f,-0.5f,-0.5f);
+    glVertex3f( 0.5f,-0.5f,-0.5f);
+
+    glColor3f(1.0f,0.0f,0.0f);
+    glVertex3f( 0.5f, 0.5f, 0.5f);
+    glVertex3f(-0.5f, 0.5f, 0.5f);
+    glVertex3f(-0.5f,-0.5f, 0.5f);
+    glVertex3f( 0.5f,-0.5f, 0.5f);
+
+    glColor3f(1.0f,0.0f,1.0f);
+    glVertex3f( 0.5f,-0.5f,-0.5f);
+    glVertex3f(-0.5f,-0.5f,-0.5f);
+    glVertex3f(-0.5f, 0.5f,-0.5f);
+    glVertex3f( 0.5f, 0.5f,-0.5f);
+
+    glColor3f(0.0f,0.0f,1.0f);
+    glVertex3f(-0.5f, 0.5f, 0.5f);
+    glVertex3f(-0.5f, 0.5f,-0.5f);
+    glVertex3f(-0.5f,-0.5f,-0.5f);
+    glVertex3f(-0.5f,-0.5f, 0.5f);
+
+    glColor3f(1.0f,1.0f,0.0f);
+    glVertex3f( 0.5f, 0.5f,-0.5f);
+    glVertex3f( 0.5f, 0.5f, 0.5f);
+    glVertex3f( 0.5f,-0.5f, 0.5f);
+    glVertex3f( 0.5f,-0.5f,-0.5f);
+    glEnd();
 }
 
 void CubeWidget::resizeGL(int width , int height )
@@ -106,6 +104,40 @@ void CubeWidget::perspective(GLdouble fovy, GLdouble aspect, GLdouble zNear, GLd
     glFrustum( xmin, xmax, ymin, ymax, zNear, zFar );
 }
 
+
+void CubeWidget::showWireframe()
+{
+    qDebug("show Wireframe");
+    glShadeModel(GL_FLAT);
+    glPolygoneMode(GL_FRONT, GL_LINE);
+}
+
+void CubeWidget::showFlat()
+{
+    qDebug("show Flat");
+    glShadeModel(GL_FLAT);
+    glPolygoneMode(GL_FRONT, GL_FILL);
+}
+
+void CubeWidget::showGouraut()
+{
+    qDebug("show Gouraut");
+    glShadeModel(GL_SMOOTH);
+    glPolygoneMode(GL_FRONT, GL_FILL);
+}
+
+void CubeWidget::showPhong()
+{
+    qDebug("show Phong");
+    showFlat();
+
+}
+
+void CubeWidget::setTessellation(int t)
+{
+
+}
+
 void CubeWidget::mousePressEvent(QMouseEvent *event ) {}
 void CubeWidget::mouseMoveEvent(QMouseEvent *event ) {}
 void CubeWidget::wheelEvent(QWheelEvent *event ) {}

A1/hellocube/cubewidget.h

@@ -3,12 +3,14 @@
 
 #include <QtGui>
 #include <QtOpenGL>
+#include <QGLFunctions>
 #include <QOpenGLFunctions>
 
 
 
 class CubeWidget : public QGLWidget
 {
+    Q_OBJECT
 protected :
     void initializeGL ( ) ;
     void paintGL ( ) ;
@@ -23,6 +25,12 @@ public:
     QSize minimumSizeHint() const;
     QSize sizeHint() const;
 
+public slots:
+    void showWireframe();
+    void showFlat();
+    void showGouraut();
+    void showPhong();
+
 private:
     void perspective(GLdouble fovy, GLdouble aspect, GLdouble zNear, GLdouble zFar);
 };

A1/hellocube/mainwindow.cpp

@@ -12,6 +12,10 @@ MainWindow::MainWindow(QWidget *parent)
     toolBar = new QToolBar("Shading",this);
     statusBar = new QStatusBar(this);
 
+    //Main Widget
+    mainWidget = new CubeWidget(this);
+    setCentralWidget(mainWidget);
+
     //File Menu Actions
     fileMenu = new QMenu("&File");
     shadingMenu= new QMenu("Shading");
@@ -26,6 +30,7 @@ MainWindow::MainWindow(QWidget *parent)
     noneAction->setShortcut(QKeySequence("Ctrl+1"));
     noneAction->setCheckable(true);
     noneAction->setIcon(QIcon(":/img/wireframe.png"));
+    connect(noneAction, SIGNAL(triggered()), mainWidget, SLOT(showWireframe()));
     shadingGroup->addAction(noneAction);
 
     flatAction = new QAction("Flat",shadingMenu);
@@ -33,18 +38,21 @@ MainWindow::MainWindow(QWidget *parent)
     flatAction->setCheckable(true);
     flatAction->setChecked(true);
     flatAction->setIcon(QIcon(":/img/flat.png"));
+    connect(flatAction, SIGNAL(triggered()), mainWidget, SLOT(showFlat()));
     shadingGroup->addAction(flatAction);
 
     gouraudAction = new QAction("Gouraud",shadingMenu);
     gouraudAction->setShortcut(QKeySequence("Ctrl+3"));
     gouraudAction->setCheckable(true);
     gouraudAction->setIcon(QIcon(":/img/gouraud.png"));
+    connect(gouraudAction, SIGNAL(triggered()), mainWidget, SLOT(showGouraut()));
     shadingGroup->addAction(gouraudAction);
 
     phongAction = new QAction("Phong",shadingMenu);
     phongAction->setShortcut(QKeySequence("Ctrl+4" ));
     phongAction->setCheckable(true);
     phongAction->setIcon(QIcon(":/img/phong.png"));
+    connect(phongAction, SIGNAL(triggered()), mainWidget, SLOT(showPhong()));
     shadingGroup->addAction(phongAction);
 
     //Other Actions
@@ -78,9 +86,7 @@ MainWindow::MainWindow(QWidget *parent)
     statusBar->showMessage("Hello");
     setStatusBar(statusBar);
 
-    //Main Widget
-    mainWidget = new CubeWidget(this);
-    setCentralWidget(mainWidget);
+