doc-en/par-numeroterfacettes-en.tex

   1 \section{Numbering of the faces}
   2
   3 The option \Lkeyword{numfaces} gives permission to number every face with its correspondent index number.
   4 \begin{itemize}
   5   \item \texttt{\Lkeyword{numfaces}=\Lkeyval{all}} all faces are numbered;
   6   \item \verb+numefaces=0 1 2 3+ only the faces that have index 0, 1, 2 and 3 are numbered.
   7 \end{itemize}
   8 The option \Lkeyword{fontsize} allows to fix the measurement of the used character set.
   9 Finally, the Boolean \Lkeyword{visibility} the numbering of \Index{faces} that are not visible.
  10 By default, the Boolean is set to \texttt{\Lkeyword{visibility}=true}, so the visibility is set up (e.~g. numbers are not set to invisible faces).
  11
  12
  13 \psset{viewpoint=50 20 30 rtp2xyz,Decran=50}
  14 \begin{LTXexample}[width=8cm]
  15 \psset{unit=1}
  16 \begin{pspicture}(-4,-3)(3,1.5)
  17 \psSolid[object=grille,
  18    base=0 4 -2 2,
  19    numfaces=2 6 7 10,
  20    linecolor=gray](0,0,0)
  21 \axesIIID(0,0,0)(4,2,1)
  22 \end{pspicture}
  23 \end{LTXexample}
  24
  25
  26
  27 %% \begin{multicols}{2}
  28 %%
  29 %% \bgroup
  30 %% \psset{SphericalCoor=true,viewpoint=50 20 30}
  31 %% \begin{center}
  32 %% \psset{unit=0.75}
  33 %% \psset{lightsrc=30 -20 10,SphericalCoor=true,viewpoint=50 -20 10,Decran=50}
  34 %% \begin{pspicture*}(-5,-4)(6,6)
  35 %% \psframe(-5,-4)(6,6)
  36 %% \axesIIID(0,0,0)(4,4,4)
  37 %% \psSolid[object=cube,
  38 %%    RotY=90,
  39 %%    ngrid=4,
  40 %%    numfaces=2 6 10,
  41 %%    action=draw**](0,0,0)
  42 %% \end{pspicture*}
  43 %% \end{center}
  44 %% \egroup
  45 %%
  46 %% \columnbreak
  47 %%
  48 %% \begin{verbatim}
  49 %% \axesIIID(0,0,0)(4,4,4)
  50 %% \psSolid[object=cube,
  51 %%    RotY=90,
  52 %%    ngrid=4,
  53 %%    numfaces=2 6 10,
  54 %%    action=draw**](0,0,0)
  55 %% \end{verbatim}
  56 %%
  57 %% \end{multicols}
  58
  59
  60
  61
  62 \psset{viewpoint=50 -20 10 rtp2xyz,Decran=50}
  63 \begin{LTXexample}[width=8cm]
  64 \begin{pspicture*}(-4,-3)(4,3)
  65 \psSolid[object=cube,
  66    RotY=90,
  67    ngrid=4,
  68    fontsize=15,
  69    action=draw,
  70    numfaces=all,](0,0,0)
  71 \end{pspicture*}
  72 \end{LTXexample}
  73
  74 %%% exemple 3
  75
  76 The options of \Lcs{psSolid} accept PostScript commands, in particular the \verb+for+ loop.
  77
  78 With the instruction \verb+numfaces=0 1 5 {} for+ all faces with the index numbers between 0
  79 and 5 are set up. The instruction \verb+numfaces=8 3 23 {} for+ sets up every third index number between 8 and 23.
  80
  81 \psset{viewpoint=50 -20 10 rtp2xyz,Decran=50}
  82 \begin{LTXexample}[width=8cm]
  83 \begin{pspicture*}(-4,-3)(4,3)
  84 \axesIIID(0,0,0)(8,3,2)
  85 \psSolid[object=grille,
  86    RotY=90,
  87    RotZ=180,
  88    ngrid=1.,
  89    fontsize=15,
  90    numfaces=
  91       0 1 5 {} for
  92       8 3 23 {} for,
  93    base=-2 2 -3 3,
  94    visibility=false,
  95    action=draw](0,0,0)
  96 \end{pspicture*}
  97 \end{LTXexample}
  98
  99 \endinput