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q3c.c
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/*
Copyright (C) 2004-2021 Sergey Koposov
Email: skoposov AT ed DOT ac DOT uk
This file is part of Q3C.
Q3C 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.
Q3C 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 Q3C; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <string.h>
/* Postgres stuff */
#include "postgres.h"
#include "executor/spi.h"
#include "utils/lsyscache.h"
/* I included that just to remove the gcc warning
* q3c.c:128: warning: implicit declaration of function `get_typlenbyvalalign'
*/
#include "utils/array.h"
#include "utils/geo_decls.h"
#include "catalog/pg_type.h"
#include "fmgr.h"
#if PG_VERSION_NUM >= 90300
#include "access/tupmacs.h"
#endif
//#include "nodes/relation.h"
#include "utils/selfuncs.h"
/* For PostgreSQL versions >= 8.2 */
#ifdef PG_MODULE_MAGIC
PG_MODULE_MAGIC;
#endif
/* End of Postgres stuff */
#include "common.h"
extern Node *estimate_expression_value(PlannerInfo *root, Node *node);
/* Postgres functions */
Datum pgq3c_ang2ipix(PG_FUNCTION_ARGS);
Datum pgq3c_ang2ipix_real(PG_FUNCTION_ARGS);
Datum pgq3c_ipix2ang(PG_FUNCTION_ARGS);
Datum pgq3c_pixarea(PG_FUNCTION_ARGS);
Datum pgq3c_dist(PG_FUNCTION_ARGS);
Datum pgq3c_dist_pm(PG_FUNCTION_ARGS);
Datum pgq3c_sindist(PG_FUNCTION_ARGS);
Datum pgq3c_sindist_pm(PG_FUNCTION_ARGS);
Datum q3c_strquery(PG_FUNCTION_ARGS);
Datum pgq3c_nearby_it(PG_FUNCTION_ARGS);
Datum pgq3c_nearby_pm_it(PG_FUNCTION_ARGS);
Datum pgq3c_ellipse_nearby_it(PG_FUNCTION_ARGS);
Datum pgq3c_radial_array(PG_FUNCTION_ARGS);
Datum pgq3c_radial_query_it(PG_FUNCTION_ARGS);
Datum pgq3c_ellipse_query_it(PG_FUNCTION_ARGS);
Datum pgq3c_poly_query_it(PG_FUNCTION_ARGS);
Datum pgq3c_poly_query1_it(PG_FUNCTION_ARGS);
Datum pgq3c_in_ellipse(PG_FUNCTION_ARGS);
Datum pgq3c_in_poly(PG_FUNCTION_ARGS);
Datum pgq3c_in_poly1(PG_FUNCTION_ARGS);
Datum pgq3c_get_version(PG_FUNCTION_ARGS);
Datum pgq3c_sel(PG_FUNCTION_ARGS);
Datum pgq3c_seljoin(PG_FUNCTION_ARGS);
Datum pgq3c_seloper(PG_FUNCTION_ARGS);
/* Dummy function that implements the selectivity operator */
PG_FUNCTION_INFO_V1(pgq3c_seloper);
Datum pgq3c_seloper(PG_FUNCTION_ARGS)
{
PG_RETURN_BOOL(true);
}
/* The actual selectivity function, it returns the ratio of the
* search circle to the whole sky area
*/
PG_FUNCTION_INFO_V1(pgq3c_sel);
Datum pgq3c_sel(PG_FUNCTION_ARGS)
{
PlannerInfo *root = (PlannerInfo *) PG_GETARG_POINTER(0);
List *args = (List *) PG_GETARG_POINTER(2);
int varRelid = PG_GETARG_INT32(3);
Node *left;
Node *other;
VariableStatData vardata;
Datum radDatum;
bool isnull;
double rad;
double ratio;
/* this needs more protections against crazy inputs */
if (list_length(args) != 2) { elog(ERROR, "Wrong inputs to selectivity function");}
left = (Node *) linitial(args);
examine_variable(root, left, varRelid, &vardata);
other = estimate_expression_value(root, vardata.var);
radDatum = ((Const *) other)->constvalue;
isnull = ((Const *) other)->constisnull;
/* We shouldn't be really getting null inputs here */
if (!isnull)
{
rad = DatumGetFloat8(radDatum);
}
else
{
rad = 0;
}
ratio = 3.14 * rad * rad / 41252.; /* pi*r^2/whole_sky_area */
/* clamp at 0, 1*/
CLAMP_PROBABILITY(ratio);
//elog(WARNING, "HERE0.... %e", ratio);
PG_RETURN_FLOAT8(ratio);
}
PG_FUNCTION_INFO_V1(pgq3c_seljoin);
Datum pgq3c_seljoin(PG_FUNCTION_ARGS)
{
PlannerInfo *root = (PlannerInfo *) PG_GETARG_POINTER(0);
List *args = (List *) PG_GETARG_POINTER(2);
int varRelid = 0;
/* Because there is no varrelid in the join selectivity call
* I just set it to zero */
Node *left;
Node *other;
VariableStatData vardata;
Datum radDatum;
bool isnull;
double rad;
double ratio;
/* this needs more protections against crazy inputs */
if (list_length(args) != 2) { elog(ERROR, "Wrong inputs to selectivity function");}
left = (Node *) linitial(args);
examine_variable(root, left, varRelid, &vardata);
other = estimate_expression_value(root, vardata.var);
radDatum = ((Const *) other)->constvalue;
isnull = ((Const *) other)->constisnull;
/* We shouldn't be really getting null inputs here */
if (!isnull)
{
rad = DatumGetFloat8(radDatum);
}
else
{
rad = 0;
}
ratio = 3.14 * rad * rad / 41252.; /* pi*r^2/whole_sky_area */
/* clamp at 0, 1*/
CLAMP_PROBABILITY(ratio);
PG_RETURN_FLOAT8(ratio);
}
static int convert_pgarray2poly(ArrayType *poly_arr, q3c_coord_t *in_ra, q3c_coord_t *in_dec, int *nvert);
PG_FUNCTION_INFO_V1(pgq3c_get_version);
Datum pgq3c_get_version(PG_FUNCTION_ARGS)
{
char VERSION_MAX_BYTES = 100;
char *buf = palloc(VERSION_MAX_BYTES);
q3c_get_version(buf, VERSION_MAX_BYTES);
PG_RETURN_CSTRING(buf);
}
PG_FUNCTION_INFO_V1(pgq3c_ang2ipix);
Datum pgq3c_ang2ipix(PG_FUNCTION_ARGS)
{
extern struct q3c_prm hprm;
q3c_coord_t ra = PG_GETARG_FLOAT8(0);
q3c_coord_t dec = PG_GETARG_FLOAT8(1);
q3c_ipix_t ipix;
static int invocation;
static q3c_coord_t ra_buf, dec_buf;
static q3c_ipix_t ipix_buf;
if (invocation == 0)
{
}
else
{
if ((ra == ra_buf) && (dec == dec_buf))
{
PG_RETURN_INT64(ipix_buf);
}
}
if ((!isfinite(ra)) || (!isfinite(dec)))
{
PG_RETURN_NULL();
}
q3c_ang2ipix(&hprm, ra, dec, &ipix);
ra_buf = ra;
dec_buf = dec;
ipix_buf = ipix;
invocation = 1;
PG_RETURN_INT64(ipix);
}
PG_FUNCTION_INFO_V1(pgq3c_ang2ipix_real);
Datum pgq3c_ang2ipix_real(PG_FUNCTION_ARGS)
{
extern struct q3c_prm hprm;
q3c_coord_t ra = PG_GETARG_FLOAT4(0);
q3c_coord_t dec = PG_GETARG_FLOAT4(1);
q3c_ipix_t ipix;
static int invocation;
static q3c_coord_t ra_buf, dec_buf;
static q3c_ipix_t ipix_buf;
if (invocation == 0)
{
}
else
{
if ((ra == ra_buf) && (dec == dec_buf))
{
PG_RETURN_INT64(ipix_buf);
}
}
if ((!isfinite(ra)) || (!isfinite(dec)))
{
PG_RETURN_NULL();
}
q3c_ang2ipix(&hprm, ra, dec, &ipix);
ra_buf = ra;
dec_buf = dec;
ipix_buf = ipix;
invocation = 1;
PG_RETURN_INT64(ipix);
}
PG_FUNCTION_INFO_V1(pgq3c_ipix2ang);
Datum pgq3c_ipix2ang(PG_FUNCTION_ARGS)
{
extern struct q3c_prm hprm;
q3c_ipix_t ipix;
q3c_coord_t ra, dec;
Datum *data;
int16 typlen;
bool typbyval;
char typalign;
ArrayType *result;
ipix = PG_GETARG_INT64(0);
if ((ipix < 0) || (ipix > Q3C_MAX_IPIX))
{
elog(ERROR, "Invalid ipix value");
}
q3c_ipix2ang(&hprm, ipix, &ra, &dec);
data = ( Datum *) palloc(sizeof(Datum) * 2);
data[0] = Float8GetDatum (ra);
data[1] = Float8GetDatum (dec);
/* get required info about the element type */
get_typlenbyvalalign(FLOAT8OID, &typlen, &typbyval, &typalign);
/* now build the array */
result = construct_array(data, 2, FLOAT8OID, typlen, typbyval, typalign);
PG_RETURN_ARRAYTYPE_P(result);
}
PG_FUNCTION_INFO_V1(pgq3c_pixarea);
Datum pgq3c_pixarea(PG_FUNCTION_ARGS)
{
extern struct q3c_prm hprm;
q3c_ipix_t ipix;
q3c_coord_t res;
int depth;
ipix = PG_GETARG_INT64(0);
depth = PG_GETARG_INT32(1);
if (depth <= 0)
{
elog(ERROR, "Invalid depth. It should be greater than 0.");
}
if (depth > 30)
{
elog(ERROR, "Invalid depth. It should be less than 31.");
}
if (ipix < 0)
{
elog(ERROR, "Invalid ipix value");
}
if (ipix > Q3C_MAX_IPIX)
{
elog(ERROR, "Invalid ipix value");
}
res = q3c_pixarea(&hprm, ipix, depth);
PG_RETURN_FLOAT8(res);
}
PG_FUNCTION_INFO_V1(pgq3c_dist);
Datum pgq3c_dist(PG_FUNCTION_ARGS)
{
q3c_coord_t ra1 = PG_GETARG_FLOAT8(0);
q3c_coord_t dec1 = PG_GETARG_FLOAT8(1);
q3c_coord_t ra2 = PG_GETARG_FLOAT8(2);
q3c_coord_t dec2 = PG_GETARG_FLOAT8(3);
q3c_coord_t res;
res = q3c_dist(ra1, dec1, ra2, dec2);
PG_RETURN_FLOAT8(res);
}
PG_FUNCTION_INFO_V1(pgq3c_sindist);
Datum pgq3c_sindist(PG_FUNCTION_ARGS)
{
q3c_coord_t ra1 = PG_GETARG_FLOAT8(0);
q3c_coord_t dec1 = PG_GETARG_FLOAT8(1);
q3c_coord_t ra2 = PG_GETARG_FLOAT8(2);
q3c_coord_t dec2 = PG_GETARG_FLOAT8(3);
q3c_coord_t res;
res = q3c_sindist(ra1, dec1, ra2, dec2);
PG_RETURN_FLOAT8(res);
}
PG_FUNCTION_INFO_V1(pgq3c_sindist_pm);
Datum pgq3c_sindist_pm(PG_FUNCTION_ARGS)
{
q3c_coord_t pmra1, pmdec1, epoch1, epoch2;
q3c_coord_t ra1, dec1, ra2, dec2, ra1_shift, dec1_shift, cdec;
bool pm_enabled = true, cosdec;
q3c_coord_t res;
const int ra_arg_pos = 0, dec_arg_pos = 1, pmra_arg_pos = 2, pmdec_arg_pos = 3,
cosdec_arg_pos = 4, epoch_arg_pos = 5, ra2_arg_pos = 6, dec2_arg_pos = 7,
epoch2_arg_pos = 8;
if (PG_ARGISNULL(ra_arg_pos) || PG_ARGISNULL(dec_arg_pos) ||
PG_ARGISNULL(ra2_arg_pos) || PG_ARGISNULL(dec2_arg_pos))
{
PG_RETURN_NULL();
}
ra1 = PG_GETARG_FLOAT8(ra_arg_pos);
dec1 = PG_GETARG_FLOAT8(dec_arg_pos);
if ((!PG_ARGISNULL(pmra_arg_pos)) &&
(!PG_ARGISNULL(pmdec_arg_pos)) &&
(!PG_ARGISNULL(epoch_arg_pos)) && (!PG_ARGISNULL(epoch2_arg_pos)))
{
pmra1 = PG_GETARG_FLOAT8(pmra_arg_pos);
pmdec1 = PG_GETARG_FLOAT8(pmdec_arg_pos);
epoch1 = PG_GETARG_FLOAT8(epoch_arg_pos);
epoch2 = PG_GETARG_FLOAT8(epoch2_arg_pos);
}
else
{
pm_enabled = false;
pmra1 = 0;
pmdec1 = 0;
epoch1 = 0;
epoch2 = 0;
}
cosdec = PG_GETARG_INT32(cosdec_arg_pos) != 0;
ra2 = PG_GETARG_FLOAT8(ra2_arg_pos);
dec2 = PG_GETARG_FLOAT8(dec2_arg_pos);
if (pm_enabled)
{
if (cosdec)
{
cdec = cos(dec1 * Q3C_DEGRA);
}
else
{
cdec = 1;
}
ra1_shift = ra1 + pmra1 * (epoch2 - epoch1) / cdec / 3600000;
dec1_shift = dec1 + pmdec1 * (epoch2 - epoch1) / 3600000;
}
else
{
ra1_shift = ra1;
dec1_shift = dec1;
}
res = q3c_sindist(ra1_shift, dec1_shift, ra2, dec2);
PG_RETURN_FLOAT8(res);
}
PG_FUNCTION_INFO_V1(pgq3c_dist_pm);
Datum pgq3c_dist_pm(PG_FUNCTION_ARGS)
{
q3c_coord_t pmra1, pmdec1, epoch1, epoch2;
q3c_coord_t ra1, dec1, ra2, dec2, ra1_shift, dec1_shift, cdec = 1;
bool pm_enabled = true, cosdec;
q3c_coord_t res;
const int ra_arg_pos = 0, dec_arg_pos = 1, pmra_arg_pos = 2, pmdec_arg_pos = 3,
cosdec_arg_pos = 4, epoch_arg_pos = 5, ra2_arg_pos = 6, dec2_arg_pos = 7,
epoch2_arg_pos = 8;
if (PG_ARGISNULL(ra_arg_pos) || PG_ARGISNULL(dec_arg_pos) ||
PG_ARGISNULL(ra2_arg_pos) || PG_ARGISNULL(dec2_arg_pos))
{
PG_RETURN_NULL();
}
ra1 = PG_GETARG_FLOAT8(ra_arg_pos);
dec1 = PG_GETARG_FLOAT8(dec_arg_pos);
if ((!PG_ARGISNULL(pmra_arg_pos)) && (!PG_ARGISNULL(pmdec_arg_pos)) &&
(!PG_ARGISNULL(epoch_arg_pos)) && (!PG_ARGISNULL(epoch2_arg_pos)))
{
pmra1 = PG_GETARG_FLOAT8(pmra_arg_pos);
pmdec1 = PG_GETARG_FLOAT8(pmdec_arg_pos);
epoch1 = PG_GETARG_FLOAT8(epoch_arg_pos);
epoch2 = PG_GETARG_FLOAT8(epoch2_arg_pos);
}
else
{
pm_enabled = false;
pmra1 = 0;
pmdec1 = 0;
epoch1 = 0;
epoch2 = 0;
}
cosdec = PG_GETARG_INT32(cosdec_arg_pos) != 0;
ra2 = PG_GETARG_FLOAT8(ra2_arg_pos);
dec2 = PG_GETARG_FLOAT8(dec2_arg_pos);
if (pm_enabled)
{
if (cosdec)
{
cdec = cos(dec1 * Q3C_DEGRA);
}
else
{
cdec = 1;
}
ra1_shift = ra1 + pmra1 * (epoch2 - epoch1) / cdec / 3600000;
dec1_shift = dec1 + pmdec1 * (epoch2 - epoch1) / 3600000;
}
else
{
ra1_shift = ra1;
dec1_shift = dec1;
}
res = q3c_dist(ra1_shift, dec1_shift, ra2, dec2);
PG_RETURN_FLOAT8(res);
}
PG_FUNCTION_INFO_V1(pgq3c_nearby_it);
Datum pgq3c_nearby_it(PG_FUNCTION_ARGS)
{
q3c_ipix_t ipix_array[8];
static q3c_ipix_t ipix_array_buf[8];
static q3c_coord_t ra_cen_buf, dec_cen_buf, radius_buf;
static int invocation;
int i;
extern struct q3c_prm hprm;
q3c_circle_region circle;
q3c_coord_t ra_cen = PG_GETARG_FLOAT8(0); // ra_cen
q3c_coord_t dec_cen = PG_GETARG_FLOAT8(1); // dec_cen
q3c_coord_t radius = PG_GETARG_FLOAT8(2); // error radius
int iteration = PG_GETARG_INT32(3); // iteration
if ( (!isfinite(ra_cen)) || (!isfinite(dec_cen)) )
{
elog(ERROR, "The values of ra,dec are infinites or NaNs");
}
if (invocation == 0)
/* If this is the first invocation of the function */
{
/* I should set invocation=1 ONLY!!! after setting ra_cen_buf, dec_cen_buf and
* ipix_buf. Because if the program will be canceled or crashed
* for some reason the invocation should be == 0
*/
}
else
{
if ((ra_cen == ra_cen_buf) && (dec_cen == dec_cen_buf) && (radius == radius_buf))
{
PG_RETURN_INT64(ipix_array_buf[iteration]);
}
}
ra_cen = UNWRAP_RA(ra_cen);
if (q3c_fabs(dec_cen) > 90) {dec_cen = q3c_fmod(dec_cen,90);}
circle.ra = ra_cen;
circle.dec = dec_cen;
circle.rad = radius;
q3c_get_nearby(&hprm, Q3C_CIRCLE, &circle, ipix_array);
for(i = 0; i < 8; i++)
{
ipix_array_buf[i] = ipix_array[i];
}
ra_cen_buf = ra_cen;
dec_cen_buf = dec_cen;
radius_buf = radius;
invocation = 1;
PG_RETURN_INT64(ipix_array_buf[iteration]);
}
PG_FUNCTION_INFO_V1(pgq3c_nearby_pm_it);
Datum pgq3c_nearby_pm_it(PG_FUNCTION_ARGS)
{
q3c_ipix_t ipix_array[8];
static q3c_ipix_t ipix_array_buf[8];
static q3c_coord_t ra_cen_buf, dec_cen_buf, radius_buf;
static q3c_coord_t pmra_buf, pmdec_buf, max_epoch_delta_buf;
static int invocation;
int i;
extern struct q3c_prm hprm;
q3c_circle_region circle;
q3c_coord_t new_radius;
q3c_coord_t ra_cen, dec_cen, pmra, pmdec;
q3c_coord_t max_epoch_delta = 0, radius = 0;
bool pm_enabled = true, cosdec;
int iteration;
const int ra_arg_pos = 0, dec_arg_pos = 1, pmra_arg_pos = 2, pmdec_arg_pos = 3,
cosdec_arg_pos = 4, maxepochdelta_arg_pos = 5, radius_arg_pos = 6, iteration_arg_pos = 7;
if (PG_ARGISNULL(ra_arg_pos) || PG_ARGISNULL(dec_arg_pos) || PG_ARGISNULL(radius_arg_pos))
{
elog(ERROR, "Right Ascensions and raddii must be not null");
}
ra_cen = PG_GETARG_FLOAT8(ra_arg_pos); // ra_cen
dec_cen = PG_GETARG_FLOAT8(dec_arg_pos); // dec_cen
if ((!PG_ARGISNULL(pmra_arg_pos)) && (!PG_ARGISNULL(pmdec_arg_pos)) &&
(!PG_ARGISNULL(maxepochdelta_arg_pos)))
{
pmra = PG_GETARG_FLOAT8(pmra_arg_pos);
pmdec = PG_GETARG_FLOAT8(pmdec_arg_pos);
max_epoch_delta = PG_GETARG_FLOAT8(maxepochdelta_arg_pos);
}
else
{
pm_enabled = false;
pmra = 0;
pmdec = 0;
max_epoch_delta = 0;
}
cosdec = PG_GETARG_INT32(cosdec_arg_pos) != 0;
radius = PG_GETARG_FLOAT8(radius_arg_pos); // error radius
iteration = PG_GETARG_INT32(iteration_arg_pos); // iteration
if ( (!isfinite(ra_cen)) || (!isfinite(dec_cen)) )
{
elog(ERROR, "The values of ra,dec are infinites or NaNs");
}
if ( (!isfinite(pmra)) || (!isfinite(pmdec)) ||
(!isfinite(max_epoch_delta)) )
{
pmra = 0;
pmdec = 0;
max_epoch_delta = 0;
}
if (max_epoch_delta < 0)
{
elog(ERROR, "The maximum epoch difference must be >=0 ");
}
if (invocation == 0)
/* If this is the first invocation of the function */
{
/* I should set invocation=1 ONLY!!! after setting ra_cen_buf, dec_cen_buf and
* ipix_buf. Because if the program will be canceled or crashed
* for some reason the invocation should be == 0
*/
}
else
{
if ((ra_cen == ra_cen_buf) && (dec_cen == dec_cen_buf) &&
(radius == radius_buf) && (pmra == pmra_buf) &&
(pmdec == pmdec_buf) && (max_epoch_delta == max_epoch_delta_buf))
{
PG_RETURN_INT64(ipix_array_buf[iteration]);
}
}
if (pm_enabled)
{
q3c_coord_t pmra1;
if (cosdec) { pmra1 = pmra; } else { pmra1 = pmra * cos(Q3C_DEGRA * dec_cen);}
new_radius = q3c_sqrt(pmra1 * pmra1 + pmdec * pmdec) / 3600000 * max_epoch_delta + radius;
}
else
{
new_radius = radius;
}
ra_cen = UNWRAP_RA(ra_cen);
if (q3c_fabs(dec_cen) > 90) {dec_cen = q3c_fmod(dec_cen,90);}
circle.ra = ra_cen;
circle.dec = dec_cen;
circle.rad = new_radius;
q3c_get_nearby(&hprm, Q3C_CIRCLE, &circle, ipix_array);
for(i = 0; i < 8; i++)
{
ipix_array_buf[i] = ipix_array[i];
}
ra_cen_buf = ra_cen;
dec_cen_buf = dec_cen;
radius_buf = radius;
max_epoch_delta_buf = max_epoch_delta;
pmra_buf = pmra;
pmdec_buf = pmdec;
invocation = 1;
PG_RETURN_INT64(ipix_array_buf[iteration]);
}
PG_FUNCTION_INFO_V1(pgq3c_ellipse_nearby_it);
Datum pgq3c_ellipse_nearby_it(PG_FUNCTION_ARGS)
{
q3c_ipix_t ipix_array[8];
static q3c_ipix_t ipix_array_buf[8];
static q3c_coord_t ra_cen_buf, dec_cen_buf, radius_buf, axis_ratio_buf, PA_buf;
static int invocation;
int i;
q3c_ellipse_region ellipse;
extern struct q3c_prm hprm;
q3c_coord_t ra_cen = PG_GETARG_FLOAT8(0); /* ra_cen */
q3c_coord_t dec_cen = PG_GETARG_FLOAT8(1); /* dec_cen */
q3c_coord_t radius = PG_GETARG_FLOAT8(2); /* error radius */
q3c_coord_t axis_ratio = PG_GETARG_FLOAT8(3); /* axis_ratio */
q3c_coord_t PA = PG_GETARG_FLOAT8(4); /* PA */
int iteration = PG_GETARG_INT32(5); /* iteration */
if ( (!isfinite(ra_cen)) || (!isfinite(dec_cen)) || (!isfinite(radius)) )
{
elog(ERROR, "The values of ra,dec,radius are infinites or NaNs");
}
if (invocation == 0)
/* If this is the first invocation of the function */
{
/* I should set invocation=1 ONLY!!! after setting ra_cen_buf, dec_cen_buf and
* ipix_buf. Because if the program will be canceled or crashed
* for some reason the invocation should be == 0
*/
}
else
{
if ((ra_cen == ra_cen_buf) && (dec_cen == dec_cen_buf) &&
(radius == radius_buf) && (PA == PA_buf) &&
(axis_ratio == axis_ratio_buf))
{
PG_RETURN_INT64(ipix_array_buf[iteration]);
}
}
ra_cen = UNWRAP_RA(ra_cen);
if (q3c_fabs(dec_cen) > 90) {dec_cen = q3c_fmod(dec_cen,90);}
ellipse.ra = ra_cen;
ellipse.dec = dec_cen;
ellipse.rad = radius;
ellipse.e = q3c_sqrt ( 1 - axis_ratio * axis_ratio );
ellipse.PA = PA;
q3c_get_nearby(&hprm, Q3C_ELLIPSE, &ellipse, ipix_array);
for(i = 0; i < 8; i++)
{
ipix_array_buf[i] = ipix_array[i];
}
ra_cen_buf = ra_cen;
dec_cen_buf = dec_cen;
radius_buf = radius;
axis_ratio_buf = axis_ratio;
PA_buf = PA;
invocation = 1;
PG_RETURN_INT64(ipix_array_buf[iteration]);
}
PG_FUNCTION_INFO_V1(pgq3c_radial_query_it);
Datum pgq3c_radial_query_it(PG_FUNCTION_ARGS)
{
extern struct q3c_prm hprm;
q3c_coord_t ra_cen = PG_GETARG_FLOAT8(0);
q3c_coord_t dec_cen = PG_GETARG_FLOAT8(1);
q3c_coord_t radius = PG_GETARG_FLOAT8(2); /* error radius */
int iteration = PG_GETARG_INT32(3); /* iteration */
int full_flag = PG_GETARG_INT32(4); /* full_flag */
/* 1 means full, 0 means partial */
static q3c_coord_t ra_cen_buf, dec_cen_buf, radius_buf;
static q3c_ipix_t partials[2 * Q3C_NPARTIALS];
static q3c_ipix_t fulls[2 * Q3C_NFULLS];
/* !!!!!!!!!! IMPORTANT !!!!!!!!!!!!!!!
* Here the Q3C_NPARTIALS and Q3C_NFULLS is the number of pairs !!! of ranges
* So we should have the array with the size twice bigger
*/
static int invocation;
ra_cen = UNWRAP_RA(ra_cen);
if (q3c_fabs(dec_cen) > 90)
{
elog(ERROR, "The absolute value of declination > 90!");
}
if (invocation == 0)
/* If this is the first invocation of the function */
{
/* I should set invocation=1 ONLY!!! after setting ra_cen_buf, dec_cen_buf and
* ipix_buf. Because if the program will be canceled or crashed
* for some reason the invocation should be == 0
*/
}
else
{
if ((ra_cen == ra_cen_buf) && (dec_cen == dec_cen_buf) && (radius == radius_buf))
{
if (full_flag)
{
PG_RETURN_INT64(fulls[iteration]);
}
else
{
PG_RETURN_INT64(partials[iteration]);
}
}
}
q3c_radial_query(&hprm, ra_cen, dec_cen, radius, fulls, partials);
ra_cen_buf = ra_cen;
dec_cen_buf = dec_cen;
radius_buf = radius;
invocation = 1;
if (full_flag)
{
PG_RETURN_INT64(fulls[iteration]);
}
else
{
PG_RETURN_INT64(partials[iteration]);
}
}
PG_FUNCTION_INFO_V1(pgq3c_ellipse_query_it);
Datum pgq3c_ellipse_query_it(PG_FUNCTION_ARGS)
{
extern struct q3c_prm hprm;
q3c_coord_t ra_cen = PG_GETARG_FLOAT8(0);
q3c_coord_t dec_cen = PG_GETARG_FLOAT8(1);
q3c_coord_t radius = PG_GETARG_FLOAT8(2); /* Major axis */
q3c_coord_t axis_ratio = PG_GETARG_FLOAT8(3); /* Axis ratio */
q3c_coord_t PA = PG_GETARG_FLOAT8(4); /* PA */
int iteration = PG_GETARG_INT32(5); /* iteration */
int full_flag = PG_GETARG_INT32(6); /* full_flag */
q3c_coord_t ell = q3c_sqrt ( 1 - axis_ratio * axis_ratio );
/* 1 means full, 0 means partial */
static q3c_coord_t ra_cen_buf, dec_cen_buf, radius_buf;
static q3c_ipix_t partials[2 * Q3C_NPARTIALS];
static q3c_ipix_t fulls[2 * Q3C_NFULLS];
/* !!!!!!!!!! IMPORTANT !!!!!!!!!!!!!!!
* Here the Q3C_NPARTIALS and Q3C_NFULLS is the number of pairs !!! of ranges
* So we should have the array with the size twice bigger
*/
static int invocation;
ra_cen = UNWRAP_RA(ra_cen);
if (q3c_fabs(dec_cen) > 90)
{
elog(ERROR, "The absolute value of declination > 90!");
}
if (invocation == 0)
/* If this is the first invocation of the function */
{
/* I should set invocation=1 ONLY!!! after setting ra_cen_buf, dec_cen_buf and
* ipix_buf. Because if the program will be canceled or crashed
* for some reason the invocation should be == 0
*/
}
else
{
if ((ra_cen == ra_cen_buf) && (dec_cen == dec_cen_buf) && (radius == radius_buf))
{
if (full_flag)
{
PG_RETURN_INT64(fulls[iteration]);
}
else
{
PG_RETURN_INT64(partials[iteration]);
}
}
}
q3c_ellipse_query(&hprm, ra_cen, dec_cen, radius, ell, PA, fulls,
partials);
ra_cen_buf = ra_cen;
dec_cen_buf = dec_cen;
radius_buf = radius;
invocation = 1;
if (full_flag)
{
PG_RETURN_INT64(fulls[iteration]);
}
else
{
PG_RETURN_INT64(partials[iteration]);
}
}
static q3c_coord_t read_from_array(char **p, bits8 *bitmap, int *bitmask, bool typbyval,
char typalign, int16 typlen)
{
q3c_coord_t val;
/* Taken from /pgsql/src/backend/utils/adt/arrayfuncs.c
* function deconstruct_array
*/
if (bitmap && (*bitmap & *bitmask) == 0)
{
ereport(ERROR,
(errcode(ERRCODE_NULL_VALUE_NOT_ALLOWED),
errmsg("null array element not allowed in this context")));
}
val = DatumGetFloat8(fetch_att(*p, typbyval, typlen));
*p = att_addlength_pointer(*p, typlen, PointerGetDatum(p));
*p = (char *) att_align_nominal(*p, typalign);
if (bitmap)
{
*bitmask <<= 1;
if (*bitmask == 0x100)
{
bitmap++;
*bitmask = 1;
}
}
return val;
}
/* Convert the PG array in two c arrays of ra,dec */
static int convert_pgarray2poly(ArrayType *poly_arr, q3c_coord_t *in_ra, q3c_coord_t *in_dec, int *nvert)
{
int poly_nitems = ArrayGetNItems(ARR_NDIM(poly_arr), ARR_DIMS(poly_arr));
Oid element_type = FLOAT8OID;
int identical = 1;
int16 typlen;
bool typbyval;
char typalign;
int i;
q3c_coord_t ra_cur, dec_cur;
char *p;
bits8 *bitmap;
int bitmask;
get_typlenbyvalalign(element_type, &typlen, &typbyval, &typalign);
/* Taken from /pgsql/src/backend/utils/adt/arrayfuncs.c
* function deconstruct_array
*/
if ((poly_nitems % 2) != 0)
{
elog(ERROR, "Invalid array argument!\nThe array should contain even number of elements");
}
else if (poly_nitems <= 4)
{
elog(ERROR, "Invalid polygon! The polygon must have more than two vertices");
}
else if (poly_nitems > (2 * Q3C_MAX_N_POLY_VERTEX))
{
elog(ERROR,"Polygons with more than 100 vertices are not supported");
}
p = ARR_DATA_PTR(poly_arr);
poly_nitems /= 2;
*nvert = poly_nitems;
identical = 1;
bitmap = ARR_NULLBITMAP(poly_arr);
bitmask = 1;
for (i = 0; i < poly_nitems; i++)
{
ra_cur = read_from_array(&p, bitmap, &bitmask, typbyval, typalign, typlen);
dec_cur = read_from_array(&p, bitmap, &bitmask, typbyval, typalign, typlen);
if ((in_ra[i] != ra_cur) || (in_dec[i] != dec_cur))
{
identical = 0;
}
in_ra[i] = ra_cur;
in_dec[i] = dec_cur;
}
return identical;
}
/* Convert Postgresql polygon in two c arrays */
static int convert_pgpoly2poly(POLYGON *poly, q3c_coord_t *ra, q3c_coord_t *dec, int *n)
{
int i, npts = poly->npts;
q3c_coord_t newx, newy;
int identical = 1;
*n = npts;
if (npts < 3)
{
elog(ERROR, "Invalid polygon! The polygon must have more than two vertices");
}
else if (npts > Q3C_MAX_N_POLY_VERTEX)
{
elog(ERROR,"Polygons with more than 100 vertices are not supported");
}
for(i = 0; i < npts; i++)
{
newx = poly->p[i].x;
newy = poly->p[i].y;
if ((newx != ra[i]) || (newy != dec[i])) {identical = 0;}
ra[i] = newx;
dec[i] = newy;
}
return identical;
}
typedef struct q3c_poly_info_type {
/* !!!!!!!!!! IMPORTANT !!!!!!!!!!!!!!!
* Here the Q3C_NPARTIALS and Q3C_NFULLS is the number of pairs !!! of ranges
* So we should have the array with the size twice bigger
*/
int ready;
q3c_ipix_t partials[2 * Q3C_NPARTIALS]; /* array of ipixes partially covered */
q3c_ipix_t fulls[2 * Q3C_NFULLS]; /* array of ipixes fully covered */
q3c_coord_t ra[Q3C_MAX_N_POLY_VERTEX],
dec[Q3C_MAX_N_POLY_VERTEX], x[Q3C_MAX_N_POLY_VERTEX],y[Q3C_MAX_N_POLY_VERTEX],
ax[Q3C_MAX_N_POLY_VERTEX], ay[Q3C_MAX_N_POLY_VERTEX];
q3c_coord_t xpj[3][Q3C_MAX_N_POLY_VERTEX], ypj[3][Q3C_MAX_N_POLY_VERTEX],
axpj[3][Q3C_MAX_N_POLY_VERTEX], aypj[3][Q3C_MAX_N_POLY_VERTEX];
// arrays storing the ra,dec ,projected x,y
char faces[6];