I understand.
But in my case, the mesh seems to be parsed again even if
I use #ifndef directive as you explained.
And it takes the same time for parsing.

I tested simple one as follows instead of putting the mesh.

#ifndef (done)
#warning "parsing started"
sphere {<0 0 0>, 1}
#declare done = 1;
#warning "parsing ended"
#end

It prints out "parsing started" and "parsing ended" in every frame.
I think these messages should not be printed from the second frame
if the variable "done" remains in the rendering of the second frame.
I am sure that I wrote "Persistent_Animation=yes" in the INI file.

What did I miss now?
Thanks for your help.



Pabs wrote:
> 
> >Any idea? Please...
> With the persistence option in MegaPOV you must remember that the whole file
> is reparsed for each frame so you must use something like the following.
> This will ensure that once the mesh has been parsed once it will never be
> parsed again.
> 
> camera{...}
> light_source{...}
> 
> #ifndef (mymeshparsed)
> mesh{
>     ...
>     ..
>     .
>     label TheMesh
> }
> #declare mymeshparsed = 1;//doesn't matter what the value is but you can't
> do just #declare mymeshparsed
> #end
> 
> Hope I've been of some help
> --
> Bye
> Pabs

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