void
geod_set(int argc, char **argv) {
paralist *start = 0, *curr;
double es;
char *name;
int i;
/* put arguments into internal linked list */
if (argc <= 0)
emess(1, "no arguments in initialization list");
start = curr = pj_mkparam(argv[0]);
for (i = 1; i < argc; ++i) {
curr->next = pj_mkparam(argv[i]);
curr = curr->next;
}
/* set elliptical parameters */
if (pj_ell_set(pj_get_default_ctx(),start, &geod_a, &es)) emess(1,"ellipse setup failure");
/* set units */
if ((name = pj_param(NULL,start, "sunits").s) != NULL) {
char *s;
struct PJ_UNITS *unit_list = pj_get_units_ref();
for (i = 0; (s = unit_list[i].id) && strcmp(name, s) ; ++i) ;
if (!s)
emess(1,"%s unknown unit conversion id", name);
fr_meter = 1. / (to_meter = atof(unit_list[i].to_meter));
} else
to_meter = fr_meter = 1.;
geod_f = es/(1 + sqrt(1 - es));
geod_ini();
/* check if line or arc mode */
if (pj_param(NULL,start, "tlat_1").i) {
double del_S;
#undef f
phi1 = pj_param(NULL,start, "rlat_1").f;
lam1 = pj_param(NULL,start, "rlon_1").f;
if (pj_param(NULL,start, "tlat_2").i) {
phi2 = pj_param(NULL,start, "rlat_2").f;
lam2 = pj_param(NULL,start, "rlon_2").f;
geod_inv();
geod_pre();
} else if ((geod_S = pj_param(NULL,start, "dS").f) != 0.) {
al12 = pj_param(NULL,start, "rA").f;
geod_pre();
geod_for();
} else emess(1,"incomplete geodesic/arc info");
if ((n_alpha = pj_param(NULL,start, "in_A").i) > 0) {
if (!(del_alpha = pj_param(NULL,start, "rdel_A").f))
emess(1,"del azimuth == 0");
} else if ((del_S = fabs(pj_param(NULL,start, "ddel_S").f)) != 0.) {
n_S = (int)(geod_S / del_S + .5);
} else if ((n_S = pj_param(NULL,start, "in_S").i) <= 0)
emess(1,"no interval divisor selected");
}
/* free up linked list */
for ( ; start; start = curr) {
curr = start->next;
pj_dalloc(start);
}
}
static void
do_arc(void) {
double az;
printLL(phi2, lam2); putchar('\n');
for (az = al12; n_alpha--; ) {
al12 = az = adjlon(az + del_alpha);
geod_pre();
geod_for();
printLL(phi2, lam2); putchar('\n');
}
}
static void /* generate intermediate geodesic coordinates */
do_geod(void) {
double phil, laml, del_S;
phil = phi2;
laml = lam2;
printLL(phi1, lam1); putchar('\n');
for ( geod_S = del_S = geod_S / n_S; --n_S; geod_S += del_S) {
geod_for();
printLL(phi2, lam2); putchar('\n');
}
printLL(phil, laml); putchar('\n');
}
void ll_gc_ll(double lat, double lon, double brg, double dist, double *dlat, double *dlon)
{
/* Setup the static parameters */
phi1 = lat * DEGREE; /* Initial Position */
lam1 = lon * DEGREE;
al12 = brg * DEGREE; /* Forward azimuth */
geod_S = dist * 1852.0; /* Distance */
geod_pre();
geod_for();
*dlat = phi2 / DEGREE;
*dlon = lam2 / DEGREE;
}
void geod_set(int argc, char **argv)
{
paralist *start = 0, *curr = NULL; /* added NULL */
double es;
char *name;
int i;
/*
* put arguments into internal linked list
*/
if (argc <= 0)
emess(1, "no arguments in initialization list");
for (i = 0; i < argc; ++i)
if (i)
curr = curr->next = pj_mkparam(argv[i]);
else
start = curr = pj_mkparam(argv[i]);
/*
* set elliptical parameters
*/
if (pj_ell_set(start, &geod_a, &es))
emess(1, "ellipse setup failure");
/*
* set units
*/
if ((name = pj_param(start, "sunits").s)) { /* added parentheses */
char *s;
for (i = 0; (s = pj_units[i].id) && strcmp(name, s); ++i);
if (!s)
emess(1, "%s unknown unit conversion id", name);
fr_meter = 1. / (to_meter = atof(pj_units[i].to_meter));
} else
to_meter = fr_meter = 1.;
if ((ellipse = es != 0.)) { /* added parentheses */
onef = sqrt(1. - es);
geod_f = 1 - onef;
f2 = geod_f / 2;
f4 = geod_f / 4;
f64 = geod_f * geod_f / 64;
} else {
onef = 1.;
geod_f = f2 = f4 = f64 = 0.;
}
/*
* check if line or arc mode
*/
if (pj_param(start, "tlat_1").i) {
double del_S;
#undef f
phi1 = pj_param(start, "rlat_1").f;
lam1 = pj_param(start, "rlon_1").f;
if (pj_param(start, "tlat_2").i) {
phi2 = pj_param(start, "rlat_2").f;
lam2 = pj_param(start, "rlon_2").f;
geod_inv();
geod_pre();
} else if ((geod_S = pj_param(start, "dS").f)) { /* added
* parentheses
*/
al12 = pj_param(start, "rA").f;
geod_pre();
geod_for();
} else
emess(1, "incomplete geodesic/arc info");
if ((n_alpha = pj_param(start, "in_A").i) > 0) {
if (!(del_alpha = pj_param(start, "rdel_A").f))
emess(1, "del azimuth == 0");
} else if ((del_S = fabs(pj_param(start, "ddel_S").f))) { /* added
* parentheses
*/
n_S = geod_S / del_S + .5;
} else if ((n_S = pj_param(start, "in_S").i) <= 0)
emess(1, "no interval divisor selected");
}
/*
* free up linked list
*/
for (; start; start = curr) {
curr = start->next;
pj_dalloc(start);
}
}
GEODESIC_T *
GEOD_init(int argc, char **argv, GEODESIC_T *GEODESIC)
{
paralist *start = 0, *curr = 0;
double es;
char *name;
int i;
if(0 == GEODESIC)
{
GEODESIC = malloc(sizeof(GEODESIC_T));
}
memset(GEODESIC, 0, sizeof(GEODESIC_T));
/* put arguments into internal linked list */
if (argc <= 0)
emess(1, "no arguments in initialization list");
for (i = 0; i < argc; ++i)
if (i)
curr = curr->next = pj_mkparam(argv[i]);
else
start = curr = pj_mkparam(argv[i]);
/* set elliptical parameters */
if (pj_ell_set(start, &GEODESIC->A, &es)) emess(1,"ellipse setup failure");
/* set units */
if ((name = pj_param(start, "sunits").s)) {
char *s;
struct PJ_UNITS *unit_list = pj_get_units_ref();
for (i = 0; (s = unit_list[i].id) && strcmp(name, s) ; ++i) ;
if (!s)
emess(1,"%s unknown unit conversion id", name);
GEODESIC->FR_METER = 1. / (GEODESIC->TO_METER = atof(unit_list[i].to_meter));
} else
GEODESIC->TO_METER = GEODESIC->FR_METER = 1.;
if ((GEODESIC->ELLIPSE = (es != 0.))) {
GEODESIC->ONEF = sqrt(1. - es);
GEODESIC->FLAT = 1 - GEODESIC->ONEF;
GEODESIC->FLAT2 = GEODESIC->FLAT/2;
GEODESIC->FLAT4 = GEODESIC->FLAT/4;
GEODESIC->FLAT64 = GEODESIC->FLAT*GEODESIC->FLAT/64;
} else {
GEODESIC->ONEF = 1.;
GEODESIC->FLAT = GEODESIC->FLAT2 = GEODESIC->FLAT4 = GEODESIC->FLAT64 = 0.;
}
/* check if line or arc mode */
if (pj_param(start, "tlat_1").i) {
double del_S;
#undef f
GEODESIC->p1.u = pj_param(start, "rlat_1").f;
GEODESIC->p1.v = pj_param(start, "rlon_1").f;
if (pj_param(start, "tlat_2").i) {
GEODESIC->p2.u = pj_param(start, "rlat_2").f;
GEODESIC->p2.v = pj_param(start, "rlon_2").f;
geod_inv(GEODESIC);
geod_pre(GEODESIC);
} else if ((GEODESIC->DIST = pj_param(start, "dS").f)) {
GEODESIC->ALPHA12 = pj_param(start, "rA").f;
geod_pre(GEODESIC);
geod_for(GEODESIC);
} else emess(1,"incomplete geodesic/arc info");
if ((GEODESIC->n_alpha = pj_param(start, "in_A").i) > 0) {
if (!(GEODESIC->del_alpha = pj_param(start, "rdel_A").f))
emess(1,"del azimuth == 0");
} else if ((del_S = fabs(pj_param(start, "ddel_S").f))) {
GEODESIC->n_S = GEODESIC->DIST / del_S + .5;
} else if ((GEODESIC->n_S = pj_param(start, "in_S").i) <= 0)
emess(1,"no interval divisor selected");
}
/* free up linked list */
for ( ; start; start = curr) {
curr = start->next;
pj_dalloc(start);
}
return GEODESIC;
}
static void /* file processing function */
process(FILE *fid) {
char line[MAXLINE+3], *s;
for (;;) {
++emess_dat.File_line;
if (!(s = fgets(line, MAXLINE, fid)))
break;
if (!strchr(s, '\n')) { /* overlong line */
int c;
strcat(s, "\n");
/* gobble up to newline */
while ((c = fgetc(fid)) != EOF && c != '\n') ;
}
if (*s == tag) {
fputs(line, stdout);
continue;
}
phi1 = dmstor(s, &s);
lam1 = dmstor(s, &s);
if (inverse) {
phi2 = dmstor(s, &s);
lam2 = dmstor(s, &s);
geod_inv();
} else {
al12 = dmstor(s, &s);
geod_S = strtod(s, &s) * to_meter;
geod_pre();
geod_for();
}
if (!*s && (s > line)) --s; /* assumed we gobbled \n */
if (pos_azi) {
if (al12 < 0.) al12 += M_TWOPI;
if (al21 < 0.) al21 += M_TWOPI;
}
if (fullout) {
printLL(phi1, lam1); TAB;
printLL(phi2, lam2); TAB;
if (oform) {
(void)printf(oform, al12 * RAD_TO_DEG); TAB;
(void)printf(oform, al21 * RAD_TO_DEG); TAB;
(void)printf(osform, geod_S * fr_meter);
} else {
(void)fputs(rtodms(pline, al12, 0, 0), stdout); TAB;
(void)fputs(rtodms(pline, al21, 0, 0), stdout); TAB;
(void)printf(osform, geod_S * fr_meter);
}
} else if (inverse)
if (oform) {
(void)printf(oform, al12 * RAD_TO_DEG); TAB;
(void)printf(oform, al21 * RAD_TO_DEG); TAB;
(void)printf(osform, geod_S * fr_meter);
} else {
(void)fputs(rtodms(pline, al12, 0, 0), stdout); TAB;
(void)fputs(rtodms(pline, al21, 0, 0), stdout); TAB;
(void)printf(osform, geod_S * fr_meter);
}
else {
printLL(phi2, lam2); TAB;
if (oform)
(void)printf(oform, al21 * RAD_TO_DEG);
else
(void)fputs(rtodms(pline, al21, 0, 0), stdout);
}
(void)fputs(s, stdout);
}
}