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e_lens.c
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Sun, Dec 29, 08:58

e_lens.c
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#include<stdio.h>
#include<stdlib.h>
#include<math.h>
#include<fonction.h>
#include<constant.h>
#include<dimension.h>
#include<structure.h>
/****************************************************************/
/* nom: e_lens */
/* auteur: Jean-Paul Kneib */
/* date: 10/02/92 */
/* place: Toulouse */
/****************************************************************
* For source, use the 2 grids gsource and gimage that establish a
* bijection between the source and the image plane to find a list
* of arclets. The number of arclets must be lower than 20.
*
* Fill the image list of arclets and return the number of arclets.
*
* Parameters :
* - source : the source
* - image : a list of arclets for the familly (modified)
*/
int e_lens( struct galaxie source,
struct galaxie image[NIMAX] )
{
const extern struct g_mode M;
const extern struct point gsource_global[NGGMAX][NGGMAX];
struct bitriplet Tsol[NIMAX];
int nimage = 0;
//struct chaine *parent;
//Tsol=NULL; // head of the Tsol list.
if ( source.dr > PREC_DLSDS )
{
nimage = inverse(gsource_global, &source.C, Tsol);
NPRINTF(stderr, "COMP: %s: multiplicity: %d at (%.3lf,%.3lf)",
source.n, nimage, source.C.x, source.C.y);
// if ((nimage>0)&&(nimage<NIMAX))
// {
/*Fill the image list with the arclets of the Tsol linked list*/
nimage = e_test(Tsol, nimage, source, image);
NPRINTF(stderr, ": found %d image(s)\n", nimage);
/* }
else
{
NPRINTF(stderr,"\n");
// free Tsol list until it is NULL value. (usefull in case nimage > NIMAX)
// Go down to the last element of the Tsol list.
while( Tsol != NULL )
{
parent = Tsol;
Tsol=(Tsol->F);
free((struct chaine*) parent);
}
}*/
}
else
NPRINTF(stderr, "COMP: %s: no multiplicity because its redshift is 0\n", source.n);
return(nimage);
}

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