Re: [ff3d-users] Using complex geometry....error using "cylinder"??

[Arun Viswanathan]

Hello Stephane,

I have now changed my povray file, I removed of the
'box' part since you said it was not required. I also
corrected the 'pigment' part within the 'intersection'
(checked page 24 of the manual, according to which I
added just one line to define the color for the whole
intersection). It just occured to me, now that I have
removed the 'box', should it be a 'union' (of
cylinders) or is 'intersection' still correct?? 

I have also defined the boundary conditions as you had
suggested. Thank you for pointing out the errors, now
the program runs. But, I now have the output (showing
a number of iterations) and the '.dat' file, they are
both different. Which one of them contains the
solutions to the PDE? 

I would also like to visualize the geometry. I am
using Opendx for this, but I don't know in what format
I must save the file to visualize it ('.dat' does not
seem right to me, any suggestions??).

Thanks for the help Stephane.
Best regards, Arun.

--- Stephane Del Pino <address@hidden> wrote:
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> 
> Hello Arun.
> I checked the files you sent I a noticed a few
> problems.
> 
> Le mardi 25 Mai 2004 20:30, Arun Viswanathan a
> écrit :
> > domain O = domain(S);
> 
> This syntax is obsolete, I have just removed it from
> ff3d to avoid this
> problem in the future. Check the page 24 of the
> documentation for a
> description of the syntax. If I am right, in your
> case, you should write
> something like:
> domain O = domain(S, outside(<0,1,0>));
> which corresponds to remove the drums from whole box
> (they are all taken into
> account since they have the same color).
> 
> > ******************p2.pov
> (below)*******************
> > intersection {
> This intersection is useless.
> >         box {
> >                 <0,0,0>, <2,2,6>
> >         }
> This box is useless. It is redundant with the
> definition of the global mesh M.
> 
> >         cylinder {
> >                 <0.5,0,0.5>, <0.5,1.4,0.5>, 0.4
> >         }
> >         pigment { color rgb <1,0,0> }
> You should refer to the POV-Ray documentation. The
> colors must be defined
> inside objects descriptions, this way:
>          cylinder {
>            <0.5,0,0.5>, <0.5,1.4,0.5>, 0.4
>            pigment { color rgb <1,0,0> }
>          }
> 
> I hope this helps,
> Stephane.
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> 
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