/Proj4/PJ_wink1.c

http://github.com/route-me/route-me · C · 23 lines · 23 code · 0 blank · 0 comment · 1 complexity · 290475cb9080cfd31552807cf1fd0a67 MD5 · raw file 

    

  1. #ifndef lint
    2. 

  2. static const char SCCSID[]="@(#)PJ_wink1.c	4.1 94/02/15     GIE     REL";
    3. 

  3. #endif
    4. 

  4. #define PROJ_PARMS__ \
    5. 

  5. 	double	cosphi1;
    6. 

  6. #define PJ_LIB__
    7. 

  7. # include	"projects.h"
    8. 

  8. PROJ_HEAD(wink1, "Winkel I") "\n\tPCyl., Sph.\n\tlat_ts=";
    9. 

  9. FORWARD(s_forward); /* spheroid */
    10. 

  10. 	xy.x = .5 * lp.lam * (P->cosphi1 + cos(lp.phi));
    11. 

  11. 	xy.y = lp.phi;
    12. 

  12. 	return (xy);
    13. 

  13. }
    14. 

  14. INVERSE(s_inverse); /* spheroid */
    15. 

  15. 	lp.phi = xy.y;
    16. 

  16. 	lp.lam = 2. * xy.x / (P->cosphi1 + cos(lp.phi));
    17. 

  17. 	return (lp);
    18. 

  18. }
    19. 

  19. FREEUP; if (P) pj_dalloc(P); }
    20. 

  20. ENTRY0(wink1)
    21. 

  21. 	P->cosphi1 = cos(pj_param(P->params, "rlat_ts").f);
    22. 

  22. 	P->es = 0.; P->inv = s_inverse; P->fwd = s_forward;
    23. 

  23. ENDENTRY(P)
    24.