ref: 28f4567ba615c4036c079021392825757ef2a008
dir: /sys/src/cmd/map/libmap/cylindrical.c/
#include <u.h> #include <libc.h> #include "map.h" int Xcylindrical(struct place *place, double *x, double *y) { if(fabs(place->nlat.l) > 80.*RAD) return(-1); *x = - place->wlon.l; *y = place->nlat.s / place->nlat.c; return(1); } proj cylindrical(void) { return(Xcylindrical); }