[pstricks] Re : Re : pst-solides3d and parametric surfaces

[Manuel Luque]

 Leon Free wrote :

>could you explain what this part of the code is actually doing and why it should be commented after the first latex+dvips(+ps2pdf) run :


The calculation of the vertices and faces of the surface is slow. Once the files are written this part is no longer useful. We can then proceed to the development and use of the dat files is very fast ..

Best regards

ML

 

 

-----E-mail d'origine-----
De : Leon Free <leon.free at free.fr>
A: Graphics with PSTricks <pstricks at tug.org>
Cc: Manuel Luque <mluque5130 at aol.com>
Envoyé le : Mercredi, 13 Juillet 2011 0:08
Sujet : Re: [pstricks] Re :  pst-solides3d and parametric surfaces


great ! works fine.
your first draft helps a lot.
many thanks for your efforts.

could you explain what this part of the code is actually doing and why
it should be commented after the first latex+dvips(+ps2pdf) run :

%\psset{solidmemory}
%\psSolid[object=datfile,
%   file=Surface,
%   plansepare={[0.707 0.707 0 -2.5]},
%   name=surface,
%   action=none]
%\psSolid[object=load,
%  load=surface1,
%   file=surface1,action=writesolid]
%\psSolid[object=load,
%   load=surface0,
%   file=surface0,action=writesolid]



Le 12/07/2011 18:42, Manuel Luque a écrit :
> Leon Free Wrote :
> 
> 
>>i want to obtain the same result when the vertical plane P need not be
>>parallel to one of the axis, ie P={(x,y,z) : ax+by+c=0} with a,b both
>>nonzero (and (obivously) has a non empty intersection with the surface)
> 
> 
> A first draft. Uncomment the following lines to write the files. dat
> 
> \documentclass{article}
> \usepackage[dvipsnames,svgnames]{xcolor}
> \usepackage{pst-solides3d}
> \begin{document}
> \begin{center}
> %\codejps{
> %/biface false def
> %-.5 3 0.85 3.5 [0.2 0.2]
> %{/y exch def
> % /x exch def
> % -0.35 x dup mul mul
> %  y 2 sub y 1.5 sub mul sub
> %  0.2 x mul y mul add
> %  4.5 add }
> %  true
> %  newsurfaceparametree
> %(Surface) writesolidfile
> % }
>  \begin{pspicture}(-4,-4)(7,10)
>  \psset{lightsrc=viewpoint,viewpoint=100 35 30 rtp2xyz,Decran=150}
> %\psset{solidmemory}
> %\psSolid[object=datfile,
> %   file=Surface,
> %   plansepare={[0.707 0.707 0 -2.5]},
> %   name=surface,
> %   action=none]
> %\psSolid[object=load,
> %  load=surface1,
> %   file=surface1,action=writesolid]
> %\psSolid[object=load,
> %   load=surface0,
> %   file=surface0,action=writesolid]
> \axesIIID(0,0,0)(5,5,7)
> \psSolid[object=datfile,
>          hollow,
>          rm=0,
>          file=surface1]
> \psSolid[object=plan,
>           definition=equation, args={[0.707 0.707 0 -2.5] },opacity=.5,
>           plangrid,
>           fillcolor=ForestGreen!20, linecolor=gray!50,base=-6 0 -6 0]
> \psSolid[object=datfile,
>          hollow,
>          rm=0,
>          intersectiontype=0,
>          intersectionplan={ [0.707 0.707 0 -2.51]
> },intersectioncolor=(rouge),
>          intersectionlinewidth=2,
>          file=surface0](0,0,0)
>       \end{pspicture}
> \end{center}
> \end{document}
> 
> 
> ML
> 
> 
> 
> 
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