scam nous apporta ses lumieres en ce 10-03-2007 20:34:
> Hi all,
> 
> I am using a heightfield in an animation that takes about 5 seconds to 
> process for each frame. Is there any way to store the heightfield mesh 
> in memory between frames, or perhaps write it to a file (although that 
> won't provide much speed up I think)?
> 
> Perhaps it is just my ignorance and it is possible, but it would be 
> really nice to be able to operate on POV-Ray's internal data structures 
> directly using SDL.
> 
> Cheers.
If your heightfield is generated from a function, you can save it to a file 
during the first frame. Then, you reload it for each subsequent frame. It should 
be faster then recreating it everytime.
You can also preprocess it and save is as a heightfield image file, use hf_16 to 
get beter vertical resolution. Save as a TGA file. That's the way it was dome 
before the use of function was implemented.
Create the heightfield with an amplitude of 1 unit in a plane perpendicular to 
the camera. Use an orthographic camera. Apply this texture:
texture{gradient z }finish{ambient 1}}
Change the gradient orientation if needed.

-- 
Alain
-------------------------------------------------
Everything can be filed under "miscellaneous".

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