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-rw-r--r--noao/nproto/ace/catio.x931
1 files changed, 931 insertions, 0 deletions
diff --git a/noao/nproto/ace/catio.x b/noao/nproto/ace/catio.x
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+++ b/noao/nproto/ace/catio.x
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+include <imset.h>
+#include <tbset.h>
+define TBL_NROWS 0
+include <math.h>
+include "ace.h"
+include "cat.h"
+include "objs.h"
+
+
+# CATOPEN -- Open a catalog.
+# This may be used just to allocate the structure or to actually open
+# a catalog file. It does not read the objects. Use catrobjs.
+
+procedure catopen (cat, input, output, catdef)
+
+pointer cat #U Catalog structure
+char input[ARB] #I Input catalog name
+char output[ARB] #I Output catalog name
+char catdef[ARB] #I Catalog definition file
+
+pointer tbl
+
+bool streq()
+pointer tbtopn()
+
+begin
+ if (cat == NULL)
+ call calloc (cat, CAT_LEN, TY_STRUCT)
+
+ if (input[1] == EOS && output[1] == EOS)
+ return
+
+ if (streq (input, output)) { # READ_WRITE
+ call calloc (tbl, TBL_LEN, TY_STRUCT)
+ CAT_INTBL(cat) = tbl
+ CAT_OUTTBL(cat) = tbl
+
+ TBL_TP(tbl) = tbtopn (input, READ_WRITE, 0)
+ call catdefine (tbl, READ_ONLY, catdef)
+ call catrhdr (cat)
+ } else if (output[1] == EOS) { # READ_ONLY
+ call calloc (tbl, TBL_LEN, TY_STRUCT)
+ CAT_INTBL(cat) = tbl
+ CAT_OUTTBL(cat) = NULL
+
+ TBL_TP(tbl) = tbtopn (input, READ_ONLY, 0)
+ call catdefine (tbl, READ_ONLY, catdef)
+ call catrhdr (cat)
+ } else if (input[1] == EOS) { # NEW_FILE
+ call calloc (tbl, TBL_LEN, TY_STRUCT)
+ CAT_INTBL(cat) = NULL
+ CAT_OUTTBL(cat) = tbl
+
+ TBL_TP(tbl) = tbtopn (output, NEW_FILE, 0)
+ call catdefine (tbl, NEW_FILE, catdef)
+ } else { # NEW_COPY
+ call calloc (tbl, TBL_LEN, TY_STRUCT)
+ CAT_INTBL(cat) = tbl
+
+ TBL_TP(tbl) = tbtopn (input, READ_ONLY, 0)
+ call catdefine (tbl, NEW_COPY, catdef)
+ call catrhdr (cat)
+
+ call calloc (tbl, TBL_LEN, TY_STRUCT)
+ CAT_OUTTBL(cat) = tbl
+ TBL_TP(tbl) = tbtopn (output, NEW_COPY, TBL_TP(CAT_INTBL(cat)))
+ call catdefine (tbl, NEW_COPY, catdef)
+ }
+end
+
+
+procedure catcreate (cat)
+
+pointer cat #I Catalog structure
+
+pointer tbl, tp
+
+begin
+ if (cat == NULL)
+ return
+ tbl = CAT_OUTTBL(cat)
+ if (tbl == NULL)
+ return
+ tp = TBL_TP(tbl)
+ if (tp == NULL)
+ return
+ if (CAT_INTBL(cat) != NULL) {
+ if (tp == TBL_TP(CAT_INTBL(cat)))
+ return
+ }
+ call tbtcre (tp)
+end
+
+
+# CATCLOSE -- Close a catalog.
+
+procedure catclose (cat)
+
+pointer cat #I Catalog pointer
+
+int i
+pointer tbl, objs
+
+begin
+ if (cat == NULL)
+ return
+
+ tbl = CAT_INTBL(cat)
+ if (tbl != NULL) {
+ if (TBL_STP(tbl) != NULL)
+ call stclose (TBL_STP(tbl))
+ if (tbl == CAT_OUTTBL(cat))
+ CAT_OUTTBL(cat) = NULL
+ call tbtclo (TBL_TP(tbl))
+ }
+ tbl = CAT_OUTTBL(cat)
+ if (tbl != NULL) {
+ if (TBL_STP(tbl) != NULL)
+ call stclose (TBL_STP(tbl))
+ call tbtclo (TBL_TP(tbl))
+ }
+
+ objs = CAT_OBJS(cat)
+ if (objs != NULL) {
+ do i = 0, CAT_NUMMAX(cat)-1
+ call mfree (Memi[objs+i], TY_STRUCT)
+ }
+
+ call mfree (CAT_APFLUX(cat), TY_REAL)
+ call mfree (CAT_OBJS(cat), TY_POINTER)
+ call mfree (CAT_INTBL(cat), TY_STRUCT)
+ call mfree (CAT_OUTTBL(cat), TY_STRUCT)
+ call mfree (CAT_HDR(cat), TY_STRUCT)
+ call mfree (cat, TY_STRUCT)
+end
+
+
+# CATGETS -- Get a string parameter from the catalog header.
+
+procedure catgets (cat, param, value, maxchar)
+
+pointer cat #I Catalog pointer
+char param[ARB] #I Parameter to get
+char value[ARB] #O Returned value
+int maxchar #I Maximum characters in value
+
+int i, strdic()
+
+begin
+ value[1] = EOS
+
+ if (cat == NULL)
+ return
+
+ i = strdic (param, CAT_STR(cat), CAT_SZSTR, CATPARAMS)
+ switch (i) {
+ case 1:
+ if (CAT_HDR(cat) == NULL)
+ i = 0
+ else
+ call strcpy (HDR_IMAGE(CAT_HDR(cat)), value, maxchar)
+ case 2:
+ if (CAT_HDR(cat) == NULL)
+ i = 0
+ else
+ call strcpy (HDR_MASK(CAT_HDR(cat)), value, maxchar)
+ case 3:
+ call strcpy (CAT_OBJID(cat), value, maxchar)
+ case 4:
+ call strcpy (CAT_CATALOG(cat), value, maxchar)
+ default:
+ call sprintf (CAT_STR(cat), CAT_SZSTR,
+ "catgets: unknown catalog parameter `%s'")
+ call pargstr (param)
+ call error (1, CAT_STR(cat))
+ }
+
+ if (i == 0) {
+ call sprintf (CAT_STR(cat), CAT_SZSTR,
+ "catgets: parameter `%s' not found")
+ call pargstr (param)
+ call error (1, CAT_STR(cat))
+ }
+end
+
+
+procedure catgeti (cat, param, value)
+
+pointer cat #I Catalog pointer
+char param[ARB] #I Parameter to get
+int value #O Returned value
+
+int i, strdic()
+
+begin
+ value = INDEFI
+
+ if (cat == NULL)
+ return
+
+ i = strdic (param, CAT_STR(cat), CAT_SZSTR, CATPARAMS)
+ switch (i) {
+ case 5:
+ value = CAT_NOBJS(cat)
+ default:
+ call sprintf (CAT_STR(cat), CAT_SZSTR,
+ "catgeti: unknown catalog parameter `%s'")
+ call pargstr (param)
+ call error (1, CAT_STR(cat))
+ }
+end
+
+
+procedure catputs (cat, param, value)
+
+pointer cat #I Catalog pointer
+char param[ARB] #I Parameter to get
+char value[ARB] #I Value
+
+int i, strdic()
+
+begin
+ if (cat == NULL)
+ return
+
+ i = strdic (param, CAT_STR(cat), CAT_SZSTR, CATPARAMS)
+ switch (i) {
+ case 0:
+ call sprintf (CAT_STR(cat), CAT_SZSTR,
+ "catgets: unknown catalog parameter `%s'")
+ call pargstr (param)
+ call error (1, CAT_STR(cat))
+ case 1:
+ if (CAT_HDR(cat) == NULL)
+ call calloc (CAT_HDR(cat), HDR_LEN, TY_STRUCT)
+ call strcpy (value, HDR_IMAGE(CAT_HDR(cat)), HDR_SZFNAME)
+ case 2:
+ if (CAT_HDR(cat) == NULL)
+ call calloc (CAT_HDR(cat), HDR_LEN, TY_STRUCT)
+ call strcpy (value, HDR_MASK(CAT_HDR(cat)), HDR_SZFNAME)
+ case 3:
+ call strcpy (value, CAT_OBJID(cat), CAT_SZSTR)
+ case 4:
+ call strcpy (value, CAT_CATALOG(cat), CAT_SZSTR)
+ }
+end
+
+
+procedure catputr (cat, param, value)
+
+pointer cat #I Catalog pointer
+char param[ARB] #I Parameter to get
+real value #I Value
+
+int i, strdic()
+
+begin
+ if (cat == NULL)
+ return
+
+ i = strdic (param, CAT_STR(cat), CAT_SZSTR, CATPARAMS)
+ switch (i) {
+ case 6:
+ if (CAT_HDR(cat) == NULL)
+ call calloc (CAT_HDR(cat), HDR_LEN, TY_STRUCT)
+ HDR_MAGZERO(CAT_HDR(cat)) = value
+ default:
+ call sprintf (CAT_STR(cat), CAT_SZSTR,
+ "catgetr: unknown catalog parameter `%s'")
+ call pargstr (param)
+ call error (1, CAT_STR(cat))
+ }
+end
+
+
+procedure catrobjs (cat, filt)
+
+pointer cat #I Catalog pointer
+char filt[ARB] #I Filter string
+
+int i, num, nrows, nobjs, nummax, nalloc, tbpsta()
+pointer tbl, tp, objs, obj
+bool filter()
+
+begin
+ if (cat == NULL)
+ return
+
+ tbl = CAT_INTBL(cat)
+ if (tbl == NULL)
+ return
+ tp = TBL_TP(tbl)
+
+ nrows = tbpsta (tp, TBL_NROWS)
+ nalloc = nrows + NUMSTART - 1
+ call calloc (objs, nalloc, TY_POINTER)
+
+ nobjs = 0
+ nummax = 0
+ obj = NULL
+ do i = 1, nrows {
+ call catrobj (cat, obj, i)
+ if (!filter (obj, filt))
+ next
+ num = OBJ_NUM(obj)
+ if (num > nalloc) {
+ nalloc = nalloc + 1000
+ call realloc (objs, nalloc, TY_POINTER)
+ call aclri (Memi[objs+nalloc-1000], 1000)
+ }
+ if (Memi[objs+num-1] == NULL)
+ nobjs = nobjs + 1
+ nummax = max (num, nummax)
+ Memi[objs+num-1] = obj
+ obj = NULL
+ }
+
+ CAT_OBJS(cat) = objs
+ CAT_NOBJS(cat) = nobjs
+ CAT_NUMMAX(cat) = nummax
+end
+
+
+procedure catrobj (cat, obj, row)
+
+pointer cat #I Catalog pointer
+pointer obj #U Object pointer
+int row #I Table row
+
+int id, type, ori()
+pointer tbl, tp, stp, sym, cdef, sthead(), stnext()
+
+begin
+ if (cat == NULL)
+ return
+
+ tbl = CAT_INTBL(cat)
+ if (tbl == NULL)
+ return
+
+ tp = TBL_TP(tbl)
+ stp = TBL_STP(tbl)
+
+ if (obj == NULL)
+ call calloc (obj, OBJ_LEN, TY_STRUCT)
+
+ for (sym=sthead(stp); sym!=NULL; sym=stnext(stp,sym)) {
+ id = ENTRY_ID(sym)
+ if (id > 1000 || id == ID_APFLUX)
+ next
+ switch (id) {
+ case ID_FLAGS:
+ OBJ_FLAGS(obj) = 0
+ ifnoerr (call tbegtt (tp, cdef, row, CAT_STR(cat), CAT_SZSTR)) {
+ if (Memc[CAT_STRPTR(cat)] == 'M')
+ SETFLAG(obj,OBJ_SPLIT)
+ }
+ next
+ }
+
+ type = ENTRY_TYPE(sym)
+ cdef = ENTRY_CDEF(sym)
+ switch (type) {
+ case TY_INT:
+ iferr (call tbegti (tp, cdef, row, OBJI(obj,id)))
+ OBJI(obj,id) = INDEFI
+ case TY_REAL:
+ iferr (call tbegtr (tp, cdef, row, OBJR(obj,id)))
+ OBJR(obj,id) = INDEFR
+ case TY_DOUBLE:
+ iferr (call tbegtd (tp, cdef, row, OBJD(obj,id)))
+ OBJD(obj,id) = INDEFD
+ default:
+ iferr (call tbegtt (tp, cdef, row, OBJC(obj,id), -type))
+ OBJC(obj,id) = EOS
+ }
+ }
+
+ OBJ_ROW(obj) = row
+end
+
+
+procedure catwobj (cat, obj, row)
+
+pointer cat #I Catalog pointer
+pointer obj #I Object pointer
+int row #I Table row
+
+int ival
+real rval
+double dval
+pointer sval
+
+int id, type, func, napr, andi()
+real magzero, a, b, theta, elong, ellip, r, cxx, cyy, cxy
+real aerr, berr, thetaerr, cxxerr, cyyerr, cxyerr
+bool doshape
+pointer tbl, tp, stp, sym, cdef, sthead(), stnext()
+
+begin
+ if (obj == NULL)
+ return
+
+ tbl = CAT_OUTTBL(cat)
+ if (tbl == NULL)
+ return
+ tp = TBL_TP(tbl)
+ stp = TBL_STP(tbl)
+
+ #call sprintf (CAT_STR(cat), CAT_SZSTR, "%s-%d")
+ # if (OBJ_OBJID(obj) != NULL)
+ # call pargstr (Memc[OBJ_OBJID(obj)])
+ # else
+ # call pargstr (CAT_OBJID(cat))
+ # call pargi (OBJ_NUM(obj))
+ #call tbeptt (tp, TBL_BJID(tbl), row, CAT_STR(cat))
+ #call tbeptt (tp, TBL_CLASS(tbl), row, OBJ_CLASS(obj))
+
+ magzero = CAT_MAGZERO(cat)
+ if (IS_INDEFR(magzero))
+ magzero = 0.
+ sval = CAT_STRPTR(cat)
+ napr = 0
+ doshape = false
+ for (sym=sthead(stp); sym!=NULL; sym=stnext(stp,sym)) {
+ id = ENTRY_ID(sym)
+ func = ENTRY_FUNC(sym)
+ type = ENTRY_TYPE(sym)
+ cdef = ENTRY_CDEF(sym)
+ if (id > 1000) {
+ switch (id) {
+ case ID_A, ID_B, ID_THETA, ID_ELONG, ID_ELLIP, ID_R, ID_CXX,
+ ID_CYY, ID_CXY:
+ if (!doshape) {
+ call catshape (obj, a, b, theta, elong, ellip, r,
+ cxx, cyy, cxy, aerr, berr, thetaerr, cxxerr,
+ cyyerr, cxyerr)
+ doshape = true
+ }
+ switch (id) {
+ case ID_A:
+ rval = a
+ case ID_B:
+ rval = b
+ case ID_THETA:
+ rval = theta
+ case ID_ELONG:
+ rval = elong
+ case ID_ELLIP:
+ rval = ellip
+ case ID_R:
+ rval = r
+ case ID_CXX:
+ rval = cxx
+ case ID_CYY:
+ rval = cyy
+ case ID_CXY:
+ rval = cxy
+ }
+ case ID_FLUXERR, ID_XERR, ID_YERR:
+ switch (id) {
+ case ID_FLUXERR:
+ rval = OBJ_FLUXVAR(obj)
+ case ID_XERR:
+ rval = OBJ_XVAR(obj)
+ case ID_YERR:
+ rval = OBJ_YVAR(obj)
+ }
+ if (IS_INDEFR(rval) || rval < 0.)
+ rval = INDEFR
+ else
+ rval = sqrt (rval)
+ case ID_AERR, ID_BERR, ID_THETAERR, ID_CXXERR, ID_CYYERR,
+ ID_CXYERR:
+ if (!doshape) {
+ call catshape (obj, a, b, theta, elong, ellip, r,
+ cxx, cyy, cxy, aerr, berr, thetaerr, cxxerr,
+ cyyerr, cxyerr)
+ doshape = true
+ }
+ switch (id) {
+ case ID_AERR:
+ rval = aerr
+ case ID_BERR:
+ rval = aerr
+ case ID_THETAERR:
+ rval = aerr
+ case ID_CXXERR:
+ rval = aerr
+ case ID_CYYERR:
+ rval = aerr
+ case ID_CXYERR:
+ rval = aerr
+ }
+ }
+ } else if (id == ID_FLAGS) {
+ if (SPLIT(obj))
+ call strcpy ("M", Memc[sval], SZ_LINE)
+ else
+ call strcpy ("-", Memc[sval], SZ_LINE)
+ } else if (id == ID_APFLUX) {
+ if (OBJ_APFLUX(obj) == NULL)
+ rval = INDEFR
+ else {
+ rval = Memr[OBJ_APFLUX(obj)+napr]
+ napr = napr + 1
+ }
+ } else {
+ switch (type) {
+ case TY_INT:
+ ival = OBJI(obj,id)
+ case TY_REAL:
+ rval = OBJR(obj,id)
+ case TY_DOUBLE:
+ dval = OBJD(obj,id)
+ default:
+ call strcpy (OBJC(obj,id), Memc[sval], SZ_LINE)
+ }
+ }
+
+ # Apply function.
+ if (func > 0) {
+ if (ENTRY_CTYPE(sym) != type) {
+ # For now all function types are real.
+ switch (type) {
+ case TY_INT:
+ rval = ival
+ case TY_DOUBLE:
+ rval = dval
+ }
+ }
+ type = ENTRY_CTYPE(sym)
+ switch (func) {
+ case FUNC_MAG:
+ if (!IS_INDEFR(rval)) {
+ if (rval <= 0.)
+ rval = INDEFR
+ else
+ rval = -2.5 * log10 (rval) + magzero
+ }
+ }
+ }
+
+ # Write to catalog.
+ switch (type) {
+ case TY_INT:
+ call tbepti (tp, cdef, row, ival)
+ case TY_REAL:
+ call tbeptr (tp, cdef, row, rval)
+ case TY_DOUBLE:
+ call tbeptd (tp, cdef, row, dval)
+ default:
+ call tbeptt (tp, cdef, row, Memc[sval])
+ }
+ }
+ OBJ_ROW(obj) = row
+end
+
+
+# CATWCS -- Set catalog WCS information.
+
+procedure catwcs (cat, im)
+
+pointer cat #I Catalog pointer
+pointer im #I IMIO pointer
+
+int i
+pointer sp, axtype, label, units, format
+pointer mw, tbl, tp, stp, sym, cdef
+
+bool streq()
+pointer mw_openim(), sthead(), stnext(), stname()
+errchk mw_openim
+
+begin
+ if (cat == NULL)
+ return
+ if (CAT_OUTTBL(cat) == NULL)
+ return
+
+ call smark (sp)
+ call salloc (axtype, SZ_FNAME, TY_CHAR)
+ call salloc (label, SZ_FNAME, TY_CHAR)
+ call salloc (units, SZ_FNAME, TY_CHAR)
+ call salloc (format, SZ_FNAME, TY_CHAR)
+
+ tbl = CAT_OUTTBL(cat)
+ tp = TBL_TP(tbl)
+ stp = TBL_STP(tbl)
+
+ mw = mw_openim (im)
+ do i = 1, 2 {
+ iferr (call mw_gwattrs (mw, i, "axtype", Memc[axtype], SZ_FNAME))
+ Memc[axtype] = EOS
+ iferr (call mw_gwattrs (mw, i, "label", Memc[label], SZ_FNAME)) {
+ if (streq (Memc[axtype], "ra"))
+ call strcpy ("RA", Memc[label], SZ_FNAME)
+ else if (streq (Memc[axtype], "dec"))
+ call strcpy ("DEC", Memc[label], SZ_FNAME)
+ else
+ Memc[label] = EOS
+ }
+ iferr (call mw_gwattrs (mw, i, "units", Memc[units], SZ_FNAME)) {
+ if (streq (Memc[axtype], "ra") || streq (Memc[axtype], "dec"))
+ call strcpy ("deg", Memc[units], SZ_FNAME)
+ else
+ Memc[units] = EOS
+ }
+ iferr (call mw_gwattrs (mw, i, "format", Memc[format], SZ_FNAME)) {
+ if (streq (Memc[axtype], "ra"))
+ call strcpy ("%.2H", Memc[format], SZ_FNAME)
+ else if (streq (Memc[axtype], "dec"))
+ call strcpy ("%.1h", Memc[format], SZ_FNAME)
+ else
+ Memc[format] = EOS
+ }
+
+ if (i == 1) {
+ for (sym=sthead(stp); sym!=NULL; sym=stnext(stp,sym)) {
+ if (ENTRY_ID(sym) != ID_WX)
+ next
+ if (!(streq (Memc[stname(stp,sym)], "WX") ||
+ streq (Memc[stname(stp,sym)], "wx")))
+ Memc[label] = EOS
+ break
+ }
+ } else {
+ for (sym=sthead(stp); sym!=NULL; sym=stnext(stp,sym)) {
+ if (ENTRY_ID(sym) != ID_WY)
+ next
+ if (!(streq (Memc[stname(stp,sym)], "WY") ||
+ streq (Memc[stname(stp,sym)], "wy")))
+ Memc[label] = EOS
+ break
+ }
+ }
+
+ if (sym != NULL) {
+ cdef = ENTRY_CDEF(sym)
+ if (Memc[label] != EOS)
+ call tbcnam (tp, cdef, Memc[label])
+ if (Memc[units] != EOS)
+ call tbcnit (tp, cdef, Memc[units])
+ if (Memc[format] != EOS)
+ call tbcfmt (tp, cdef, Memc[format])
+ }
+ }
+ call mw_close (mw)
+
+ call sfree (sp)
+end
+
+
+procedure catrhdr (cat)
+
+pointer cat #I Catalog pointer
+
+pointer tp, hdr
+
+begin
+ if (cat == NULL)
+ return
+
+ if (CAT_HDR(cat) != NULL)
+ call mfree (CAT_HDR(cat), TY_STRUCT)
+ if (CAT_INTBL(cat) == NULL)
+ return
+ tp = TBL_TP(CAT_INTBL(cat))
+
+ call calloc (CAT_HDR(cat), HDR_LEN, TY_STRUCT)
+ hdr = CAT_HDR(cat)
+
+ iferr (call tbhgtt (tp, "IMAGE", HDR_IMAGE(hdr), HDR_SZFNAME))
+ HDR_IMAGE(hdr) = EOS
+ iferr (call tbhgtt (tp, "MASK", HDR_MASK(hdr), HDR_SZFNAME))
+ HDR_MASK(hdr) = EOS
+ iferr (call tbhgtr (tp, "MAGZERO", HDR_MAGZERO(hdr)))
+ HDR_MAGZERO(hdr) = INDEFR
+end
+
+
+procedure catwhdr (cat, im)
+
+pointer cat #I Catalog pointer
+pointer im #I Image pointer
+
+pointer tp, hdr
+
+begin
+ if (cat == NULL)
+ return
+
+ tp = CAT_OUTTBL(cat)
+ hdr = CAT_HDR(cat)
+ if (tp == NULL || hdr == NULL)
+ return
+ tp = TBL_TP(tp)
+
+ if (HDR_IMAGE(hdr) != EOS)
+ call tbhadt (tp, "IMAGE", HDR_IMAGE(hdr))
+ if (HDR_MASK(hdr) != EOS)
+ call tbhadt (tp, "MASK", HDR_MASK(hdr))
+ if (!IS_INDEFR(HDR_MAGZERO(hdr)))
+ call tbhadr (tp, "MAGZERO", HDR_MAGZERO(hdr))
+end
+
+
+procedure catwobjs (cat)
+
+pointer cat #I Catalog pointer
+
+int i, j
+pointer objs, obj
+
+begin
+ if (cat == NULL)
+ return
+ if (CAT_OUTTBL(cat) == NULL)
+ return
+ if (CAT_OBJS(cat) == NULL)
+ return
+
+ objs = CAT_OBJS(cat)
+ j = 0
+ do i = 1, CAT_NUMMAX(cat) {
+ obj = Memi[objs+i-1]
+ if (obj == NULL)
+ next
+ j = j + 1
+ call catwobj (cat, obj, j)
+ }
+end
+
+
+
+procedure catdump (cat)
+
+pointer cat #I Catalog pointer
+
+int i
+pointer objs, obj
+
+begin
+ if (CAT_OBJS(cat) == NULL)
+ return
+
+ objs = CAT_OBJS(cat)
+ do i = 1, CAT_NUMMAX(cat) {
+ obj = Memi[objs+i-1]
+ if (obj == NULL)
+ next
+
+ call printf ("%d %d %g %g\n")
+ call pargi (OBJ_NUM(obj))
+ call pargi (OBJ_NPIX(obj))
+ call pargr (OBJ_XAP(obj))
+ call pargr (OBJ_YAP(obj))
+ }
+end
+
+
+# CATGOBJ -- Get object given the object number.
+#
+# Currently this relies on the object pointer array being indexed by
+# object number.
+
+pointer procedure catgobj (cat, num)
+
+pointer cat #I Catalog
+int num #I Object number
+
+begin
+ return (Memi[CAT_OBJS(cat)+num-1])
+end
+
+
+# These currently work on the object number but eventually there will be
+# an array of indices to allow traversing the objects in some sorted order.
+
+pointer procedure cathead (cat)
+
+pointer cat #I Catalog pointer
+
+int i
+pointer objs, obj
+
+begin
+ objs = CAT_OBJS(cat)
+ do i = 0, CAT_NUMMAX(cat)-1 {
+ obj = Memi[objs+i]
+ if (obj != NULL)
+ return (obj)
+ }
+ return (NULL)
+end
+
+
+pointer procedure catnext (cat, obj)
+
+pointer cat #I Catalog pointer
+pointer obj #I Input object pointer
+
+int i
+pointer objs, objnext
+
+begin
+ if (obj == NULL)
+ return (NULL)
+
+ objs = CAT_OBJS(cat)
+ do i = OBJ_NUM(obj), CAT_NUMMAX(cat)-1 {
+ objnext = Memi[objs+i]
+ if (objnext != NULL)
+ return (objnext)
+ }
+ return (NULL)
+end
+
+
+procedure catshape (obj, a, b, theta, elong, ellip, r, cxx, cyy, cxy,
+ aerr, berr, thetaerr, cxxerr, cyyerr, cxyerr)
+
+pointer obj #I Object structure
+real a #O Semimajor axis based on second moments
+real b #O Semiminor axis based on second moments
+real theta #O Position angle based on second moments
+real elong #O Elongation (A/B)
+real ellip #O Ellipticity (1 - B/A)
+real r #O Radius based on second moments
+real cxx, cyy, cxy #O Ellipse parameters based on second moments
+real aerr, berr, thetaerr #O Errors
+real cxxerr, cyyerr, cxyerr #O Errors
+
+bool doerr
+real x2, y2, xy, r2, d, f
+real xvar, yvar, xycov, rvar, dvar, fvar
+
+begin
+ a = INDEFR
+ b = INDEFR
+ theta = INDEFR
+ elong = INDEFR
+ ellip = INDEFR
+ r = INDEFR
+ aerr = INDEFR
+ berr = INDEFR
+ thetaerr = INDEFR
+ cxxerr = INDEFR
+ cyyerr = INDEFR
+ cxyerr = INDEFR
+
+ x2 = OBJ_X2(obj)
+ y2 = OBJ_Y2(obj)
+ xy = OBJ_XY(obj)
+ xvar = OBJ_XVAR(obj)
+ yvar = OBJ_YVAR(obj)
+ xycov = OBJ_XYCOV(obj)
+
+ if (IS_INDEFR(x2) || IS_INDEFR(y2) || IS_INDEFR(xy))
+ return
+
+ r2 = x2 + y2
+ if (r2 < 0.)
+ return
+
+ doerr = !(IS_INDEF(xvar) || IS_INDEF(yvar) || IS_INDEF(xycov))
+ if (doerr) {
+ rvar = xvar + yvar
+ if (rvar < 0.)
+ doerr = false
+ }
+
+ r = sqrt (r2)
+
+ d = x2 - y2
+ theta = RADTODEG (atan2 (2 * xy, d) / 2.)
+
+ if (doerr) {
+ dvar = xvar - yvar
+ thetaerr = atan2 (2 * xycov, dvar) / 2.
+ if (thetaerr < 0.)
+ thetaerr = INDEF
+ else
+ thetaerr = DEGTORAD (sqrt (thetaerr))
+ }
+
+ f = sqrt (d**2 + 4 * xy**2)
+ if (f > r2)
+ return
+
+ if (doerr) {
+ fvar = sqrt (dvar**2 + 4 * xycov**2)
+ if (fvar > rvar)
+ doerr = false
+ }
+
+ a = sqrt ((r2 + f) / 2)
+ b = sqrt ((r2 - f) / 2)
+
+ if (doerr) {
+ aerr = sqrt ((rvar + fvar) / 2)
+ berr = sqrt ((rvar - fvar) / 2)
+ }
+
+ ellip = 1 - b / a
+ if (b > 0.)
+ elong = a / b
+
+ if (f == 0) {
+ cxx = 1. / (a * a)
+ cyy = 1. / (a * a)
+ cxy = 0
+ } else {
+ cxx = y2 / f
+ cyy = x2 / f
+ cxy = -2 * xy / f
+ }
+
+ if (doerr) {
+ if (fvar == 0) {
+ cxxerr = 1. / (aerr * aerr)
+ cyyerr = 1. / (berr * berr)
+ cxyerr = 0.
+ } else {
+ cxxerr = yvar / fvar
+ cyyerr = xvar / fvar
+ cxyerr = -2 * xycov / fvar
+ }
+ }
+
+end
generated by cgit (git 2.34.1) at 2025-09-20 07:21:41 -0400