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/* Program to generate ground truth from SLALIB. Used by stcsphertest.py. */
#include <stdio.h>
#include <string.h>
#define GNU_SOURCE
#include <math.h>
#include <slalib.h>
#include <sofa.h>
#define DEG(x) (x)/M_PI*180.
#define RAD(x) (x)*M_PI/180.
typedef struct _spherCoo {
double alpha;
double delta;
} spherCoo;
typedef struct _spherCooWithPM {
double alpha;
double delta;
double parallax; // slalib likes this in arcsec
double pma; // slalib wants this in rad/trop. yr
double pmd; // slalib wants this in rad/trop. yr
double rv; // slalib likes this in km/s, positive receding
} spherCooWithPM;
void generateCases(spherCoo testCases[], char *varName, char *system,
double ep1, double ep2)
{
spherCoo *coo;
char *epochSpec=strcmp(system, "FK5")?"B":"J";
printf("%s = ([\n", varName);
for (coo=testCases; coo->alpha!=-1; coo++) {
double alpha = coo->alpha;
double delta = coo->delta;
printf("\t((%.10f, %.10f), ", alpha, delta);
alpha *= M_PI/180.;
delta *= M_PI/180.;
slaPreces(system, ep1, ep2, &alpha, &delta);
printf("(%.10f, %.10f)),\n", DEG(alpha), DEG(delta));
}
printf("], 'Position %s %s%f', 'Position %s %s%f')\n", system,
epochSpec, ep1, system, epochSpec, ep2);
}
void generateEquCase(char *system, double ep1, double ep2)
{
spherCoo testCases[] = {
{0, 0},
{0.1, -0.1},
{0, 90},
{45, 45},
{359.9, 30},
{359.9, -30},
{181, -30},
{-1, 0},
};
char varName[30];
sprintf(varName, "%s%dTo%d", system, (int)ep1, (int)ep2);
if (strcmp(system, "FK5")) {
printf("# %s, %f -> %f\n", system, slaEpb2d(ep1)+2400000.5,
slaEpb2d(ep2)+2400000.5);
} else {
printf("# %s, %f -> %f\n", system, slaEpj2d(ep1)+2400000.5,
slaEpj2d(ep2)+2400000.5);
}
generateCases(testCases, varName, system, ep1, ep2);
}
void generateFromGalCase(void)
{
spherCoo testCases[] = {
{0, 0},
{90, 0},
{266.404996, -28.936172},
{276.337270, 60.188552},
{-1, 0},
};
spherCoo *coo;
printf("# Gal -> J2000.0\n");
printf("GalToJ2000 = ([\n");
for (coo=testCases; coo->alpha!=-1; coo++) {
double alpha, delta;
printf("\t((%.10f, %.10f), ", coo->alpha, coo->delta);
slaGaleq(RAD(coo->alpha), RAD(coo->delta), &alpha, &delta);
printf("(%.10f, %.10f)),\n", DEG(alpha), DEG(delta));
}
printf("], 'Position GALACTIC', 'Position J2000')\n");
}
void generateToGalCase(void)
{
spherCoo testCases[] = {
{0, 0},
{90, 0},
{318.0043908771, 48.3296430519},
{276.3372700000, 60.1885520000},
{-1, 0},
};
spherCoo *coo;
printf("# J2000.0 -> Gal\n");
printf("J2000ToGal = ([\n");
for (coo=testCases; coo->alpha!=-1; coo++) {
double alpha, delta;
printf("\t((%.10f, %.10f), ", coo->alpha, coo->delta);
slaEqgal(RAD(coo->alpha), RAD(coo->delta), &alpha, &delta);
printf("(%.10f, %.10f)),\n", DEG(alpha), DEG(delta));
}
printf("], 'Position J2000', 'Position GALACTIC')\n");
}
void generateSixCase(char *fromSystem, char *toSystem, char * label,
void (*trafo)(double, double, double, double, double, double,
double*, double*, double*, double*, double*, double*))
{
spherCooWithPM testCases[] = {
{0, 0, 0.01, 0, 0, 0},
{0, 0, 0.01, 1e-7, 1e-7, 0},
{0, 0, 0.01, -1e-7, 1e-7, 0},
{0, 0, 0.01, -1e-7, -1e-7, 0},
{0, 0, 0.01, 1e-7, -1e-7, 0},
{0, 0, 1, 1e-7, -1e-7, 0},
{0, 0, 1, -1e-7, 1e-7, -300},
{0, 0, 1, 1e-7, 1e-7, 300},
{120, 45, 0.01, 0, 0, 0},
{130, 45, 1, 1e-7, 1e-7, 300},
{190, -45, 1, 1e-7, 1e-7, 300},
{0, 82, 1, 1e-7, 1e-7, 300},
{50, -83, 1, 1e-7, 1e-7, -300},
{-1, 0, 0, 0, 0, 0},
};
spherCooWithPM *coo;
printf("# %s -> %s.\n", fromSystem, toSystem);
printf("Six%s = ([\n", label);
for (coo=testCases; coo->alpha!=-1; coo++) {
double alpha, delta, pmd, pma, parallax, rv;
printf("\t((%.10f, %.10f, %.10f, %.10f, %.10f, %.10f), ",
coo->alpha, coo->delta, coo->parallax,
coo->pma, coo->pmd, coo->rv);
trafo(RAD(coo->alpha), RAD(coo->delta), coo->pma, coo->pmd,
coo->parallax, coo->rv, &alpha, &delta, &pma, &pmd, ¶llax,
&rv);
printf("(%.10f, %.10f, %.10f, %.10f, %.10f, %.10f)),\n",
DEG(alpha), DEG(delta), parallax, pma, pmd, rv);
}
printf("], 'Position %s SPHER3 unit deg deg arcsec"
" VelocityInterval unit rad/yr rad/yr km/s', "
"'Position %s SPHER3 unit deg deg arcsec"
" VelocityInterval unit rad/yr rad/yr km/s')\n",
fromSystem, toSystem);
}
#define ECL_FK5TEMPLATE "'Position FK5 J2000'"
#define ECL_ECLTEMPLATE "'Time TT MJD %f Position ECLIPTIC'"
void generateEclCase(double mjd, int reverse)
{
spherCoo testCases[] = {
{0, 0},
{0.1, -0.1},
{0, 90},
{45, 45},
{359.9, 30},
{359.9, -30},
{181, -30},
{-1, 0},
};
spherCoo *coo;
int idate=(int)mjd;
void (*trafo)(double, double, double, double*, double*);
if (reverse) {
printf("J2000ToECL%d = ([\n", idate);
trafo = slaEqecl;
} else {
printf("ECL%dToJ2000 = ([\n", idate);
trafo = slaEcleq;
}
for (coo=testCases; coo->alpha!=-1; coo++) {
double alpha, delta;
printf("\t((%.10f, %.10f), ", coo->alpha, coo->delta);
trafo(RAD(coo->alpha), RAD(coo->delta), mjd, &alpha, &delta);
printf("(%.10f, %.10f)),\n", DEG(alpha), DEG(delta));
}
if (reverse) {
printf("], " ECL_FK5TEMPLATE ", " ECL_ECLTEMPLATE ")\n", mjd);
} else {
printf("], " ECL_ECLTEMPLATE ", " ECL_FK5TEMPLATE ")\n", mjd);
}
}
int main(void)
{
printf("# Test cases automatically generated by makestctruth.c.\n");
printf("# Do not edit. See Makefile on how to regenerate it.\n");
generateEquCase("FK5", 1980, 2000);
generateEquCase("FK5", 2000, 1974);
generateEquCase("FK5", 2000, 2025);
generateEquCase("FK5", 2000, 2057);
generateEquCase("FK5", 2050, 2025);
generateEquCase("FK4", 1950, 2000);
generateEquCase("FK4", 1920, 1950);
generateEquCase("FK4", 1875, 1980);
generateToGalCase();
generateFromGalCase();
generateSixCase("FK4 B1950", "FK5 J2000", "FK4ToFK5", slaFk425);
generateSixCase("FK5 J2000", "FK4 B1950", "FK5ToFK4", slaFk524);
generateEclCase(51544.5, 0);
generateEclCase(71520.7, 0);
generateEclCase(32110.2, 0);
generateEclCase(51544.5, 1);
generateEclCase(71520.7, 1);
generateEclCase(32110.2, 1);
generateSixCase("FK5", "ICRS", "FK5ToICRS", iauFk52h);
generateSixCase("ICRS", "FK5", "ICRSToFK5", iauH2fk5);
return 0;
}
/* vi:ts=2
*/
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