Re: Saving rgb files (pfuSaveImage)

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Simon Mills (simon++at++wgs.estec.esa.nl)
Mon, 22 Feb 1999 11:42:44 +0100

Colin Bannister wrote:
>
> Hello,
> I am attempting to save a series of images from a fly-through
> of a performer scene. To do this, I am using the routine pfuSaveImage
> alongside pfFrame in the part of the program that does the scene drawing.
> The image files are created with the correct resolution, but are all
> solid black. I suspect this is due to performer continuing to update buffers
> as pfuSaveImage attempts to save them. Could anyone suggest whether this
> analysis is correct? Can I force the program to wait on the save file
> completing before moving on? I have the frame rate set to 25 at present.

Make sure you are calling pfuSaveImage in the DRAW process. I put it
just before pfDraw() in the channel draw callback function.

> My goal is to acheive a series of rgb files which can be converted into a
> movie (mpeg etc.). Is my approach flawed, or will a simple modification
> to the program get it going?

I have done this and it works. The disadvantage is that the frame rate
really slows down and so interactive control can become difficult. I
have also used the 'mediarecorder' facility on an Octane to capture a
movie from the screen directly.

> Any help much appreciated.
>
> Colin
>
> --
>
> Dr. Colin Bannister
> Academic Computing Services
> Cripps Computing Centre Tel: 0115 9513326
> The University of Nottingham Fax: 0115 9513358
> Nottingham NG7 2RD
> www: http://www.nottingham.ac.uk/~cczcb/
> email: Colin.Bannister++at++nottingham.ac.uk

-- 
Regards, Simon
________________________________________________________________________


Simon C. Mills
Modelling & Simulation Section (TOS-EMM)         Tel: +31 (0)71 565 3725
European Space Agency (ESA/ESTEC)                Fax: +31 (0)71 565 5419
Postbus 299, 2200AG Noordwijk             e-mail: simon++at++wgs.estec.esa.nl
The Netherlands                        http://www.estec.esa.nl/wmwww/EMM
________________________________________________________________________

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