ezisos(3NCARG)
NAME
EZISOS - Draws an isosurface.
SYNOPSIS
CALL EZISOS (F,MU,MV,MW,EYE,SLAB,FISO)
C-BINDING SYNOPSIS
#include <ncarg/ncargC.h> void c_ezisos (float *f, int mu, int mv, int mw, float eye[3], float *slab, float fiso)
DESCRIPTION
F (an input array of type REAL, dimensioned MU x MV x MW) is
a three-dimensional array of data defining the function
f(u,v,w). The entire array (elements F(IU,IV,IW), for IU =
1 to MU, IV = 1 to MV, and IW = 1 to MW) is to be used. The
data are considered to lie in a box in 3-space with
opposite corners (in the UVW coordinate system) (1.,1.,1.)
and (REAL(MU),REAL(MV),REAL(MW)). The element F(IU,IV,IW)
is considered to be the value of the function f at the
point (REAL(IU),REAL(IV),REAL(IW)).
MU (an input expression of type INTEGER) is the first
dimension of the array F.
MV (an input expression of type INTEGER) is the second
dimension of the array F.
MW (an input expression of type INTEGER) is the third
dimension of the array F.
EYE (an input array of type REAL, dimensioned 3) is the
position of the eye in the UVW coordinate system. The eye
position, at (EYE(1),EYE(2),EYE(3)), must be outside the
box containing the data. The point being looked at is at
the center of the data box and the projection plane is
perpendicular to the line of sight. While gaining
experience with the routine, a good choice for EYE is
(5.*REAL(MU),3.5*REAL(MV),2.*REAL(MW)).
SLAB (a scratch array of type REAL, dimensioned at least n x n,
where "n" is defined to be MAX[MU,MV,MW]+2) is a workspace
for ISOSRF.
FISO (an input expression of type REAL) is the value of fiso in
the equation f(u,v,w)=fiso, which defines the isosurface to
be drawn.
C-BINDING DESCRIPTION
The C-binding argument descriptions are the same as the Fortran argument descriptions, with the following exceptions: f t is dimensioned mw by mv by mu mu The third dimension of the array f mw The first dimension of the array f
USAGE
EZISOS is called to draw an isosurface if all of the input array is to be used (rather than a subset of it), if ISOSRF's argument IFLAG is to be chosen internally, and if a frame advance is to be done after the isosurface is drawn. If any of these conditions is not met, use ISOSRF instead.
EXAMPLES
Use the ncargex command to see the following relevant example: tisosr, fisissrf.
ACCESS
To use EZISOS or c_ezisos, load the NCAR Graphics libraries ncarg, ncarg_gks, and ncarg_c, preferably in that order.
SEE ALSO
Online: isosurface, isosurface_params, isgeti, isgetr, isosrf, isseti, issetr, pwrzi, ncarg_cbind Hardcopy: NCAR Graphics Fundamentals, UNIX Version
COPYRIGHT
Copyright (C) 1987-2009 University Corporation for Atmospheric Research The use of this Software is governed by a License Agreement.
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