Previous: hidbv Up: ../plot79_h.html Next: hidcv

HIDCS

       SUBROUTINE  HIDCS (Z1,ZE,Z2, MX,MY, NX,NY, S, NZ, US,VS, L, PL2)
 C$    (Contoured Surface)
 C$    Graph a  hidden-line  view  of  a  surface,  on  which  are
 C$    embedded contour lines.  The arguments are:
 C$
 C$    (MX,MY)........Actual declared dimensions of ZE(*,*)
 C$    ZE(NX,NY)......Array of function values
 C$    (NX,NY)........Ranges of J and I
 C$    (Z1,Z2)........Span of Z values
 C$    S..............=+1.0,  plot  positive  part  of   function,
 C$                   =-1.0, plot negative part of function.  Only
 C$                   the sign of S  is significant.  S=0.0  plots
 C$                   both positive and negative.
 C$    NZ.............Number of contour lines to be drawn.
 C$    US,VS..........Total shears in U and V directions (maximum
 C$                   1.0)
 C$    L..............Direction of view and increment (+: west,
 C$                   -: east)
 C$    PL2............2-D pen movement subroutine, usually PLC2A
 C$
 C$    The algorithm used has a time proportional to NX*NY*NZ,  so
 C$    that this routine is about NZ times slower than most of the
 C$    other horizon-based hidden-line routines.
 C$    (01-FEB-82)