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g_curv.c
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Sun, Dec 29, 10:04

g_curv.c
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#include<stdio.h>
#include<math.h>
#include<fonction.h>
#include<constant.h>
#include<dimension.h>
#include<structure.h>
#include<lt.h>
/****************************************************************/
/* nom: g_curv */
/* auteur: Jean-Paul Kneib */
/* date: 10/02/92 */
/* place: Toulouse */
/****************************************************************/
void g_curv(int icurv, int np, double z, char *file1, char *file2, char *file3)
{
const extern struct g_mode M;
const extern struct g_frame F;
const extern struct pot lens[];
register int i, j;
double dx, dy;
double dl0s, dos, dlsds;
struct point pi;
struct matrix gg;
double **cxx, **cxy, **cyy;
NPRINTF(stderr, "COMP: curvature map for zs=%.3lf =>%s %s %s\n", z, file1, file2, file3);
dl0s = distcosmo2( lens[0].z, z);
dos = distcosmo1( z );
dlsds = dl0s / dos;
dx = (F.xmax - F.xmin) / (np - 1);
dy = (F.ymax - F.ymin) / (np - 1);
cxx = (double **) alloc_square_double(np, np);
cxy = (double **) alloc_square_double(np, np);
cyy = (double **) alloc_square_double(np, np);
for (j = 0; j < np; j++)
{
pi.y = j * dy + F.ymin;
for (i = 0; i < np; i++)
{
pi.x = i * dx + F.xmin;
gg = e_grad2(&pi, dl0s, z);
gg.a /= dos;
gg.b /= dos;
gg.c /= dos;
cxx[j][i] = gg.a;
cxy[j][i] = gg.b;
cyy[j][i] = gg.c;
};
};
if (M.iref > 0)
{
wrf_fits_abs(file1, cxx, np, np, F.xmin, F.xmax, F.ymin, F.ymax, M.ref_ra, M.ref_dec);
wrf_fits_abs(file2, cxy, np, np, F.xmin, F.xmax, F.ymin, F.ymax, M.ref_ra, M.ref_dec);
wrf_fits_abs(file3, cyy, np, np, F.xmin, F.xmax, F.ymin, F.ymax, M.ref_ra, M.ref_dec);
}
else
{
wrf_fits(file1, cxx, np, np, F.xmin, F.xmax, F.ymin, F.ymax);
wrf_fits(file2, cxy, np, np, F.xmin, F.xmax, F.ymin, F.ymax);
wrf_fits(file3, cyy, np, np, F.xmin, F.xmax, F.ymin, F.ymax);
}
free_square_double(cxx, np);
free_square_double(cxy, np);
free_square_double(cyy, np);
}

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