[Bf-committers] Maximum Frame Number

[Ton Roosendaal]

Hi,

It's a short in the code, at a lot of places (also sfra, efra, etc)...  
you could convert it, but be aware not to break 'dna' conventions in  
blender (creating padding in structs is not allowed).
Next to that, timing values are also calculated in floats, which don't  
have a high precision. Doing int-float conversions loose precision at a  
certain value, dunno when exactly (23 bits?). But i think 180k should  
be reliable.

BTW: 18000 frames means continuous anims of 12 minutes can be rendered  
(pal). Quite acceptable. But of course not in *all* situations. :)

Allowing much higher values for animation rendering also includes to  
think over the way to present such limits, and bring it under control  
in a way that doesnt frustrate. Maya for example has an option to set  
'Frame Padding', to make names as name#.ext with '#' being 1-8 digits.

I would suggest leaving it... it's not worth the hassle. For your  
project just jack it up to 32000!

-Ton-



On Tuesday, Jun 10, 2003, at 04:48 Europe/Amsterdam, Alexander Ewering  
wrote:

>
>
> Hi people,
>
> little thing that could make Blender users' lifes a lot easier :-)
>
> Why is the maximum frame number 18000? Are shorts used anywhere to
> deal with frame numbers, or can the maximum frame number be boosted
> to 2**31 or even 2*32 without breaking anything? :)
>
>
> | alexander ewering           instinctive new media
> | ae@instinctive.de       http://www.instinctive.de
> |
> | fon: +49-2393-220558         fax: +49-2393-220559
>
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Ton Roosendaal  Blender Foundation ton@blender.org  
http://www.blender.org