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#include <stdio.h>
#include <proj.h>
int test_transform() {
PJ *P;
PJ_COORD a, b;
P = proj_create_crs_to_crs(
PJ_DEFAULT_CTX,
"EPSG:4326",
"+proj=utm +zone=32 +datum=WGS84", /* or EPSG:32632 */
NULL);
if (0 == P) {
fprintf(stderr, "Oops\n");
return 1;
}
/* Copenhagen: 55d N, 12d E */
a = proj_coord(55, 12, 0, 0);
b = proj_trans(P, PJ_FWD, a);
printf("easting: %.2f, northing: %.2f, ", b.enu.e, b.enu.n);
b = proj_trans(P, PJ_INV, b);
printf("latitude: %.2f, longitude: %.2f\n", b.lp.lam, b.lp.phi);
proj_destroy(P);
return 0;
}
int main(int argc, char *argv[]) {
PJ_INFO info;
info = proj_info();
if(argc == 2 && argv[1][0] == '-') {
switch(argv[1][1]) {
case 't':
return(test_transform());
case 's':
printf("%s\n", info.searchpath);
return(0);
case 'v':
printf("%d.%d.%d\n", info.major, info.minor, info.patch);
return(0);
}
}
fprintf(stderr, "Use option -t, -s or -v\n");
return(1);
}
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