Le_Forgeron <jgr### [at] freefr> wrote:
> 800 x 600 is about 9 megabytes of storage in raw.
> (5 COLC (== float) per pixel, with 32 bits per float, usually)
>
> At the very end of the file there is 3 extra size_type, which hold : the
> size of the pixel_type, the width of the picture, the height of the
> picture (in that order).
>
> Once created, the file keep its size.
>
> Position in the file of pixel (x,y) is (y * witdth + x)*size_of_pixel_type
>
> A gap can exist between the last pixel and the 3 size_type at the end.
>
> pixel_type is an array of 5 COLC.
> (order is Red, Green, Blue, Filter, Transmit)
>
> The file is a temporary file, usually in the local directory unless you
> tuned it otherwise. (on unix : it's /tmp/pov$$ with $$ the process id)

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