How to use opengl on qt ?



  • well i can now draw a picture there. but it can't move.
    for example i use this code in paintGL
    @
    void visualazition::paintGL(){

    glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
    glLoadIdentity();
    
    for (int i=0;i<=10;i++){
    
    glTranslatef( -1.5,  0.0, -6.0 );
    glTranslatef( rTri,  0.0, -2.0 );
    
    glBegin( GL_TRIANGLES );
      glColor3f( 1.0, 0.0, 0.0 );
      glVertex3f(  0.0,  1.0,  0.0 );
      glColor3f( 0.0, 1.0, 0.0 );
      glVertex3f( -1.0, -1.0,  0.0 );
      glColor3f( 0.0, 0.0, 1.0 );
      glVertex3f(  1.0, -1.0,  0.0 );
    glEnd();
    
    glLoadIdentity();
    glTranslatef(  1.5,  0.0, -6.0 );
    glRotatef( rQuad,  1.0,  0.0,  0.0 );
    
    glColor3f( 0.5, 0.5, 1.0 );
    glBegin( GL_QUADS );
      glVertex3f( -1.0,  1.0,  0.0 );
      glVertex3f(  1.0,  1.0,  0.0 );
      glVertex3f(  1.0, -1.0,  0.0 );
      glVertex3f( -1.0, -1.0,  0.0 );
    glEnd();
    QTime dieTime = QTime::currentTime().addMSecs(1000);
    while( QTime::currentTime() < dieTime )
        QCoreApplication::processEvents(QEventLoop::AllEvents, 1000);
    //glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
    rTri += 0.2;
    rQuad -= 0.15;
    

    }@

    but it only show the final picture. i want to see tirangles moving on screen.



  • Maybe using Signals and Slots for timing more preferred?


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