File: flames_fastlocatefibre.c

package info (click to toggle)
cpl-plugin-uves 6.1.3+dfsg-2
  • links: PTS, VCS
  • area: main
  • in suites: bullseye, sid
  • size: 23,128 kB
  • sloc: ansic: 171,056; sh: 4,359; python: 3,002; makefile: 1,322
file content (149 lines) | stat: -rw-r--r-- 4,923 bytes parent folder | download | duplicates (3)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
/*===========================================================================
  Copyright (C) 2001 European Southern Observatory (ESO)

  This program is free software; you can redistribute it and/or 
  modify it under the terms of the GNU General Public License as 
  published by the Free Software Foundation; either version 2 of 
  the License, or (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public 
  License along with this program; if not, write to the Free 
  Software Foundation, Inc., 675 Massachusetss Ave, Cambridge, 
  MA 02139, USA.

  Corresponding concerning ESO-MIDAS should be addressed as follows:
  Internet e-mail: midas@eso.org
  Postal address: European Southern Observatory
  Data Management Division 
  Karl-Schwarzschild-Strasse 2
  D 85748 Garching bei Muenchen 
  GERMANY
  ===========================================================================*/

/*-------------------------------------------------------------------------*/
/**
 * @defgroup flames_fastfillholes
 *
 */
/*---------------------------------------------------------------------------
  Includes
  --------------------------------------------------------------------------*/
/**
   @name  flames_locatefibres()  
   @short  This function locates where each fibre begins and ends at each x 
   and order in the all fibres FF frames  
   @author G. Mulas  -  ITAL_FLAMES Consortium. Ported to CPL by A. Modigliani

   @param allflatsin, 
   @param ordpos, 
   @param ordercentre,
   @param iorder, 
   @param ifibre, 
   @param ix

   @return success or failure code, 

   DRS Functions called:          
   none

   Pseudocode:                                                             

   @note
 */



#ifdef HAVE_CONFIG_H
#  include <config.h>
#endif
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <math.h>
#include <flames_fastlocatefibre.h>

#include <flames_midas_def.h>
#include <flames_uves.h>


flames_err 
fastlocatefibre(allflats *allflatsin, 
                orderpos* ordpos, 
                double ordercentre,
                int32_t iorder, 
                int32_t ifibre, 
                int32_t ix)
{
    double fibrecentre=0;
    double yup=0;
    double ydown=0;
    double pyup=0;
    double pydown=0;

    int32_t iorderifibreindex=0;
    int32_t iorderifibreixindex=0;
    int32_t *lvecbuf1=0;
    int32_t *lvecbuf2=0;
    frame_mask *fmvecbuf1=0;

    iorderifibreindex = (iorder*allflatsin->maxfibres)+ifibre;
    iorderifibreixindex = (iorderifibreindex*allflatsin->subcols)+ix;

    lvecbuf1 = allflatsin->lowfibrebounds[0][0]+iorderifibreixindex;
    lvecbuf2 = allflatsin->highfibrebounds[0][0]+iorderifibreixindex;
    fmvecbuf1 = allflatsin->goodfibres[0][0]+iorderifibreixindex;

    /* mark the fibre as good and normalisable, unless otherwise set hereafter */
    *fmvecbuf1 = GOODSLICE;
    /* find the y central position of this fibre at this x */
    fibrecentre = ordercentre+(ordpos->fibrepos)[ifibre];
    /* now determine the y limits of this fibre */
    yup = fibrecentre+allflatsin->halfibrewidth;
    ydown = fibrecentre-allflatsin->halfibrewidth;
    /* translate to pixel coordinates, remembering that pixel numbering starts
     at 0 and taking into account the pixel size */
    pyup = (yup-allflatsin->substarty)/allflatsin->substepy-0.5;
    pydown = (ydown-allflatsin->substarty)/allflatsin->substepy+0.5;
    /* check boundaries and truncate to integer appropriately */
    /* is the whole interval out of the boundaries? */
    if ((pyup <= -1) || (pydown >= (double)(allflatsin->subrows))) {
        /* the y loop must be skipped */
        *lvecbuf1=1;
        *lvecbuf2=0;
        *fmvecbuf1=BADSLICE;
    }
    else {
        /* is the upper limit above the upper boundary? */
        if (pyup >= (double) (allflatsin->subrows-1)) {
            pyup = (double) (allflatsin->subrows-1);
            *lvecbuf2 = allflatsin->subrows-1;
        }
        /* truncate the upper limit to the smallest larger integer */
        else {
            *lvecbuf2 = (int32_t) ceil(pyup);
        }
        /* is the lower limit below the lower boundary? */
        if (pydown <= 0) {
            pydown = 0;
            *lvecbuf1 = 0;
        }
        else {
            *lvecbuf1 = (int32_t) floor(pydown);
        }
        double fibrefrac = (pyup-pydown+1)*((double)(allflatsin->substepy))/
                        (2*allflatsin->halfibrewidth);
        if (fibrefrac < allflatsin->minfibrefrac) {
            /* skip this fibre */
            *lvecbuf1 = 1;
            *lvecbuf2 = 0;
            *fmvecbuf1=BADSLICE;
        }
    }
    return(NOERR);
}
/**@}*/