Re: [AGG] Animation in win32 with AGG

[Alexey B. <bav...@ma...>]

Hello, Peter.

27 =E0=E2=E3=F3=F1=F2=E0 2007 =E3., 9:28:33 you wrote:

> Hi..

> I'm tring to make somekinds real-time animation with agg..

> Demo programs in agg seems to use 'idle' time to draw something.

> It's good for demo but insufficient for real-animation program.

> I have run maxim's 'particle_demo2.exe' it's amazingly fast..!!

> I wonder how can I implement such a nice animation in win32 ??

> I have tried below ways..

> it's runned in separated thread..

> while(1)
> {
>    draw with agg
>    sleep (1)
> }

> it seems work..but animation is not smooth and quite slow..

> Please give me some clue for smooth animation.//


you must pre-render a few frames of your animation in memory buffer
and then, blend (or just copy it to screen).

in "particle_demo" there are 2 ways of animate: cached & not cached.
not cached animation renders each object in every frame - it's slow
enough. but cached version - renders objects to the memory buffers,
and then just blends them out to screen - very fast! )

that's all! ))