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Text File  |  1996-07-16  |  810b  |  26 lines
  1. .TH STRIVAR
  2.  6 "IRIT Version 6.0" 
  3. .SH NAME
  4. STRIVAR
  5.  
  6.  
  7.  
  8.  SurfaceType STRIVAR( TrivarType TV )
  9.  
  10. Extracts an iso surface from a trivariate function TV.
  11.  
  12. Example:
  13.  
  14.     TV1 = tbezier( list( list( list( ctlpt( E3, 0.1, 0.0, 0.8 ),
  15.                                      ctlpt( E3, 0.2, 0.1, 2.4 ) ),
  16.                                list( ctlpt( E3, 0.3, 2.2, 0.2 ),
  17.                                      ctlpt( E3, 0.4, 2.3, 2.0 ) ) ),
  18.                          list( list( ctlpt( E3, 2.4, 0.8, 0.1 ),
  19.                                      ctlpt( E3, 2.2, 0.7, 2.3 ) ),
  20.                                list( ctlpt( E3, 2.3, 2.6, 0.5 ),
  21.                                      ctlpt( E3, 2.1, 2.5, 2.7) ) ) ) );
  22.     Srf = STRIVAR( TV1, col, 0.4 ); 
  23.  
  24. extracts an iso surface of TV1, in the col direction at
  25. parameter value 0.4.
  26.