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representation by stereoviews


  
Figure 15: Stereo view of the function w = z2.
\begin{figure} \centering \begin{picture} (320,140) \put(0,0){\epsfxsize=320pt \epsffile{stereo.eps}} \end{picture} \end{figure}

Figure 15 shows the square function in a stereopair, with some vestiges which are more likely to be a moiré depending on pixel size than anything which was planned. The effect is like looking down the inside of a conical paper cup, but the bottom should be more rounded.

The following REC/C code generates the pair. 

{     ( [define function]  PP* s  p;) f
  (Z  (!100! P @f  (!100! u + @f  :;) p v + :;) p
   Z  (!100! P @f  (!100! u + @f  :;) p v - :;) p
   Z  (!100! P @f  (!100! u - @f  :;) p v + :;) p
   Z  (!100! P @f  (!100! u - @f  :;) p v - :;) p
   ;)   }


Microcomputadoras
2001-02-12