EVOLUTION-MANAGER

Edit File: PJ_mill.c

#define PJ_LIB__ #include <math.h> #include "projects.h" PROJ_HEAD(mill, "Miller Cylindrical") "\n\tCyl, Sph"; static XY s_forward (LP lp, PJ *P) { /* Spheroidal, forward */ XY xy = {0.0,0.0}; (void) P; xy.x = lp.lam; xy.y = log(tan(M_FORTPI + lp.phi * .4)) * 1.25; return (xy); } static LP s_inverse (XY xy, PJ *P) { /* Spheroidal, inverse */ LP lp = {0.0,0.0}; (void) P; lp.lam = xy.x; lp.phi = 2.5 * (atan(exp(.8 * xy.y)) - M_FORTPI); return (lp); } PJ *PROJECTION(mill) { P->es = 0.; P->inv = s_inverse; P->fwd = s_forward; return P; }