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Vinniee

Rotozooming?

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Hey all, I really searched for over an hour already to find out what rotozooming is. I have also searched on the forums but I could not find any useful links. Can anyone please explain me what rotozooming is or can anyone please give me a link where I can read what it does. Thanks!

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Try having a read through this: http://www.flipcode.com/articles/demomaking_issue10.shtml

That's how I learnt how to do it. Have a read trough the rest of the series too. It'll give you a bit of an insight into all the old skool demo effects.

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Hehe, thanks for the quick reply!

I am kind of confused now though. Any website that I found explains me how I do it, but it never explains me what it does. Or am I wrong?

What exactly is rotozooming used for?

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Ah I see! Miss-read your post there.

It's for zooming and rotating bitmaps in realtime.

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Quote:
Original post by DaveG
Ah I see! Miss-read your post there.

It's for zooming and rotating bitmaps in realtime.


You mean the texture of an object? In what kind of case is this used?

Thanks!

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It's a software technique, and so can be replaced with hardware acceleration for a speed boost and increase in quality. As Sneftel mentioned, it was a popular effect in demos; Second Reality has one after the lens effect.

It is, however, a cheap effect; one potential use is a freely rotating top-down tiled game (eg a Micro Machines game with smooth rotation).

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So, if I am right.. You can use this technique in tile based games to simulate the rotations of the objects etcetra? And the rotations are being pre rendered and mapped?

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Yes, you can use this on any bitmapped-data ( although it will be a tad more difficult with tiles ). And no, the rotations are not pre-rendered.

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