"gregjohn" <pte### [at] yahoocom> wrote in message 
news:web.48aea49b13c48d0e34d207310@news.povray.org...
> I'm setting up an animation, where every frame is very different.  I only 
> want
> povray to go to the trouble of creating an image if condition  #if() is 
> met.
> Are there certain kinds of errors for which povray will give an error so
> serious it refuses to create an image, but go on to the next frame? 
> Something
> like 1/0?  And in these cases, does it always create an all-black bitmap?

I believe that any error serious enough to actually prevent POV-Ray from 
creating one image in an animation sequence will halt the render and prevent 
it from generating subsequent images in the sequence.

There are certain things that will produce an all-black image, such as not 
having anything in the scene (which can render very quickly).

I'm not sure about exactly the problem you're trying to solve, but if you 
have a big list of images and you want to suppress certain ones based on 
something that's evaluated only when you generate the sequence, you could 
always use the POV-Ray write command to generate a list of the ones you need 
to delete in a format that you can run as a script once the renderer has 
finished.

Regards,
Chris B

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