These tutorials focus mainly on OpenGL, Win32 programming and the ODE physics engine. OpenGL has moved on to great heights and I don't cover the newest features but cover all of the basic concepts you will need with working example programs.
Working with the Win32 API is a great way to get to the heart of Windows and is just as relevant today as ever before. Whereas ODE has been marginalized as hardware accelerated physics becomes more common.
Games and graphics utilities can be made quickly and easily using game engines like Unity so this and Linux development in general will be the focus of my next tutorials.
By Alan Baylis 15/09/2001
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Using billboards is a very fast way to achieve halo effects, smoke, etc and before having a look at my source in main.cpp I do recommend you read a tutorial by Nate Miller on the subject. This example uses the same method as Nate describes to make a halo type billboard that always faces the camera no matter where the camera is positioned. There are also occasions when you want the billboard to rotate to face the camera but remain vertical when viewed from any position, when displaying fire or trees for example. For this reason I've also included another method for making a fire type billboard which works for a camera with 6 degrees of freedom.