OpenGL & Qt animation

Here are the files that animate the pattern from the last lab: globjwin.cpp glbox.cpp glbox.h

The main differences are:

First of all we need to specify a way of using animation. For this we use a Qt timer. We need to define a timer and how to use it.

In globjwin.cpp:

#include qtimer.h

	 //for animation
    QTimer *timer = new QTimer( this ); 
	           //this creates a Qt timer event
    connect( timer, SIGNAL(timeout()), c, SLOT(animate()) ); 
	           //this specifies what is to happen when the timer sends
				  //  a signal, ie, when the timer event occurs
				  //  (SIGNAL(timeout)) send a signal to
				  //  SLOT(animate()) - which is in glbox.cpp 
    timer->start( 4, FALSE );
	          //this specifies that the timer event happens every 4
		       //   milliseconds and that it is infinite loop

This all means that every 4 milliseconds an event is generated that triggers animate() in glbox.cpp

in glbox.h, add:
in glbox.cpp

Remember to check the documentation.

More OpenGL ~ 3D objects

Useful References

OpenGL Programming Guide (The Red Book).

OpenGL Index in Alphabetic Order (This is pretty long)

The OpenGL Website

The OpenGL Website - tutorials

Contact me
email: pj@cpsc.ucalgary.ca
Tel: (403) 220 7041.