Yes, you are right.
Thanks a lot
Best Regard
Wu Yang
"Warp" <war### [at] tagpovrayorg> wrote in message
news:3daa5e12@news.povray.org...
> Wu Yang <wya### [at] cswrightedu> wrote:
> > static void Reflect(......)
> > {
> >   ofstream output("D:\\out.dat");
> >   ......
>
>   This is not an answer to your question per se, but do you think that's
> the best way to go?
>   If you open the file for writing each time Reflect() is called, this
> is not only inefficient (a system call for opening a file for writing can
> be quite slow if done lots and lots of times) but you will also be
destroying
> any previous data which existed in the file (by default ofstream opens
> the file for writing, not for appending, ie. if the file existed already,
> it's clamped to 0 size).
>   You should only open the file once in some initialization routine, not
> every time Reflect() is called.
>
>   And by the way, it's a good idea to check if opening the file succeeded.
> Don't take the success for granted.
>
> --
> #macro M(A,N,D,L)plane{-z,-9pigment{mandel L*9translate N color_map{[0rgb
x]
> [1rgb 9]}scale<D,D*3D>*1e3}rotate y*A*8}#end M(-3<1.206434.28623>70,7)M(
> -1<.7438.1795>1,20)M(1<.77595.13699>30,20)M(3<.75923.07145>80,99)// -
Warp -

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