doc-en/par-fusion-en.tex

   1 \section{Fusing solids}
   2
   3 It is possible to arrange several solids within the same
   4 structure: this is done with the operation \Lkeyword{fusion} of
   5 solids. This technique uses the painting algorithm for the whole
   6 scene.
   7
   8 To do so, you must activate the option \verb+\psset{solidmemory}+
   9 to memorize the structures of the different solids within
  10 \Lcs{psSolid}, with each of them given a separate name.
  11
  12 You use the object \Lkeyword{fusion} of \Lcs{psSolid}, by indicating in
  13 the parameter \Lkeyword{base} the list of names of the solids to be
  14 fused.
  15
  16 To draw the scene, don't forget to conclude the code with
  17 \verb+\composeSolid+.
  18
  19 \psset{lightsrc=50 -50 50,viewpoint=40 16 32 rtp2xyz,Decran=40}
  20 \begin{LTXexample}[width=7.5cm]
  21 \psset{unit=.6}
  22 \begin{pspicture}(-6,-5)(6,7)
  23 \psset{solidmemory}
  24 \psSolid[object=cylindre,h=6,fillcolor=blue,
  25       r=1.5,
  26       ngrid=4 16,
  27       action=none,
  28       name=A1,
  29       ](0,0,-4)
  30 \psSolid[object=anneau,h=6,fillcolor=red!50,
  31       R=4,r=3,h=1,
  32       action=none,
  33       name=B1,
  34       ](0,0,-1)
  35 \psSolid[object=fusion,
  36       action=draw**,
  37       base=A1 B1,
  38       ](0,0,0)
  39 \composeSolid
  40 \end{pspicture}
  41 \end{LTXexample}
  42
  43
  44 \begin{LTXexample}[width=6.5cm]
  45 \psset{unit=0.5}
  46 \begin{pspicture}(-6,-5)(6,5)
  47 \psset{solidmemory}
  48 \psset{lightsrc=50 -50 50,viewpoint=100 -30 40,
  49    Decran=100,linewidth=0.5\pslinewidth,
  50    ngrid=18 18,fillcolor=white,
  51    h=12,r=2,RotX=90}
  52 \psframe*[linecolor=black](-6,-5)(6,5)
  53 \psSolid[object=cylindrecreux,
  54    action=none,
  55    name=cylindre1](0, 6, 0)
  56 \psSolid[object=cylindrecreux,
  57    RotZ=90,
  58    action=none,
  59    name=cylindre2](-6, 0, 0)
  60 \psSolid[object=fusion,
  61    base=cylindre1 cylindre2,RotX=0]
  62 \composeSolid
  63 \end{pspicture}
  64 \end{LTXexample}
  65
  66 \endinput