hi,

"Bald Eagle" <cre### [at] netscapenet> wrote:
> "jr" <cre### [at] gmailcom> wrote:
> > too complex, really, for the need.
>
> Probably, but good learning exercise for more complex scenes.
> We really don't have any demonstrations / tutorials for this.
> Working example code beats everything.

if you, anyone reading, have a tutorial "in them", the wiki would be a good
place for it.  (would be happy to collaborate)



> >   #if (first_ < last_ & first_ <= frame_number)
> won't this always be true?

true, the "bit" after the '&' is .. without use.  (maybe I need to have stronger
coffee in the mornings :-))



> If I understand this correctly, ...

you and me both.. :-)  it'd all be "easier" with the actual scene code, let's
wait for m@b's reply.


regards, jr.

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"jr" <cre### [at] gmailcom> wrote:
> "m@b" <nomail@nomail> wrote:
> > "jr" <cre### [at] gmailcom> wrote:
> > > ...
> > > another option, not yet mentioned, is having a (shell) script run from the
> > > 'pre_frame_command' which writes the values to a simple CSV type file that you
> > > can read from within the scene.
> >
> > Hmm, yes, I could shell out to a Python script that parses the resolution.ini
> > file.
>
> too complex, really, for the need.  apologies.  it can (should) all be done "in
> scene", the following quick test works, assuming ten frames and you only want 4
> through 6:
>
> - create a simple "CSV" file with (subset) end and start frame numbers:
>
>   $ echo '6,4' > framenos.csv
>
>
> - my ini file ("mb.ini"):
>
>   initial_frame = 1
>   final_frame = 10
>   cyclic_animation = off
>   subset_start_frame = 4
>   subset_end_frame = 6
>
>   input_file_name = mb.pov
>   output_file_name = mb_
>
>
> - and your scene, ie only the code inside the conditional:
>
>   #version 3.7;
>
>   global_settings {assumed_gamma 1}
>
>   #declare datafn_ = "framenos.csv";
>
>   #fopen tmp_fp_ datafn_ read
>   #read (tmp_fp_,last_,first_)
>   #fclose tmp_fp_
>
>   #if (first_ < last_ & first_ <= frame_number)
>
>     /* scene stuff */
>     box {0,1}
>
>
>     #declare first_ = first_ + 1;  /* 'incr()' ?! ;-) */
>     #fopen tmp_fp_ datafn_ write
>     #write (tmp_fp_,last_,",",first_)
>     #fclose tmp_fp_
>
>   #end
>
>
> hth, let me know if I got "the wrong end of the stick" :-).
>
>
> regards, jr.

Yes - that would work but, as others have sated, the whole thing is getting more
complicated than it merits.

For now I am happy just to pass the numbers from resolution.ini thus:

    Subset_End_Frame=3755
    Declare=SEF=3755

Typing the number twice must be quicker than editing a second file each time.

m@b

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hi,

"m@b" <nomail@nomail> wrote:
> "jr" <cre### [at] gmailcom> wrote:
> ...
> > > > another option, ...
>
> Yes - that would work but, as others have sated, the whole thing is getting more
> complicated than it merits.
>
> For now I am happy just to pass the numbers from resolution.ini thus:
>
>     Subset_End_Frame=3755
>     Declare=SEF=3755
>
> Typing the number twice must be quicker than editing a second file each time.

:-)  glad/good you found a way.


regards, jr.

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