[pstricks] Re : Fwd: PSTricks tip about 3D Rotation

[Juergen Gilg]

Cher Manuel,

pouvez-vous donner un example concernant l'option VIEWPOINT de 
pst-solides3d, que le point de vue va à une ligne de constant 
radius (r) de (0/0/0) du pole nord vers le pole sud (avec multido).

Ma méthode est:

*\psset{viewpoint=70 40 \r\space *rtp2xyz*,Decran=50,lightsrc=50 
40 35}*
de l'exemple:
http://melusine.eu.org/syracuse/pstricks/pst-solides3d/animations/a09/

C'est que Pedro voulait savoir... La rotation sur l'axe z n'est 
pas un problème...

Avez-vous quelque chose comme ca dans votre archive? Si oui -- 
permettez-le à Pedro -- il veut être hereux.

J'ai lit les mots concernant le malheur de JPV -- my thoughts are 
with him. Il me manque plus de mots.

A bientôt,

Juergen

On 08.06.2011 17:37, Manuel Luque wrote:
> Leon Free<leon.free at free.fr>  wrote :
>
>
>
> i>s what you want to do something like this ?
> >http://leon.free.free.fr/mco_anim.pdf
> >(it requires acrobat reader for playing the animation)
>
> Génial ! Please, can you explain your method? Do you use 
> PStricks?(I think the answer is positive)
> Thank you.
>
> Manuel
>
>
>
>
> -----E-mail d'origine-----
> De : Leon Free <leon.free at free.fr>
> A : Graphics with PSTricks <pstricks at tug.org>; pedro.sacramento 
> <pedro.sacramento at gmail.com>
> Envoyé le : Mercredi, 8 Juin 2011 9:46
> Sujet : Re: [pstricks] Fwd: PSTricks tip about 3D Rotation
>
> pedro,
> is what you want to do something like this ?
> http://leon.free.free.fr/mco_anim.pdf
> (it requires acrobat reader for playing the animation)
>
>
> Le 07/06/2011 20:09, Herbert Voss a écrit :
> >  -------- Original-Nachricht --------
> >  Betreff: PSTricks tip about 3D Rotation
> >  Datum: Tue, 7 Jun 2011 09:34:28 -0300
> >  Von: Pedro Sacramento<pedro.sacramento at gmail.com  <mailto:pedro.sacramento at gmail.com>>
> >  An: pedro sacramento<pedro.sacramento at gmail.com  <mailto:pedro.sacramento at gmail.com>>
> >
> >  Hello,
> >
> >  I'm a new *pst-solides3d* user and I've been trying to use it to make an
> >  interactive 3D geometry like the sample above (the attached zip has the
> >  complete set of images too, if you want to see):
> >  http://www.yofla.com/flash/3d-rotate/classic/examples.php?exampleId=1
> >
> >  I'll be really thankfull if you can help me with a tip about manipulating
> >  the geometry in 3D space, I still wasn't able to figure it out, even though
> >  I'm making many tests with the manual.
> >
> >  And my question is:  *I already know how to rotate the 3D object around Z.
> >  But how can I move the camera from the top to the bottom of the image,
> >  always looking to the origin of the graph and keeping constant distance
> >  from
> >  the origin? I believe that a multido procedure can easily tackle it, to
> >  generate all the 272 images.*
> >
> >   \begin{pspicture}[RotX=*0*,RotY=*0*,RotZ=*$z*](-6,-8)(7,8)
> >   \psSurface[ngrid=.25 .25,incolor=yellow,
> >   linewidth=0.5\pslinewidth,
> >   algebraic,hue=0 1](-4,-4)(4,4){%
> >   ((y^2)-(x^2))/4 }
> >   \end{pspicture}
> >
> >  Best regards and thaks a lot,
> >
> >  *P.S.: As far as I can see, It's basically a 16x17 matrix of images where Z
> >  rotation increases 22,5º (360º/16 steps) degrees as j increases. Also the
> >  camera moves downwards as i increases (always looking to the origin of the
> >  graph). It must start looking the object from the top and then move down
> >  until looking to the bottom of it. The camera keeps in constant distance
> >  from origin while moving from top to bottom))*
> >
> >
> >
> >  _______________________________________________
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>
>
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-- 
  Jürgen Gilg
  Austr. 59
  70376 Stuttgart
-------------------------------------
  Tel       0711.59 27 88
  e-Mail    gilg at acrotex.net


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