/Proj4/PJ_putp5.c

http://github.com/route-me/route-me · C · 29 lines · 29 code · 0 blank · 0 comment · 1 complexity · 8f645f593c7b4b6304137393fafe15ce MD5 · raw file 

    

  1. #ifndef lint
    2. 

  2. static const char SCCSID[]="@(#)PJ_putp5.c	4.1	94/02/15	GIE	REL";
    3. 

  3. #endif
    4. 

  4. #define PROJ_PARMS__ \
    5. 

  5. 	double	A, B;
    6. 

  6. #define PJ_LIB__
    7. 

  7. # include	"projects.h"
    8. 

  8. PROJ_HEAD(putp5, "Putnins P5") "\n\tPCyl., Sph.";
    9. 

  9. PROJ_HEAD(putp5p, "Putnins P5'") "\n\tPCyl., Sph.";
    10. 

  10. #define C	1.01346
    11. 

  11. #define D	1.2158542
    12. 

  12. FORWARD(s_forward); /* spheroid */
    13. 

  13. 	xy.x = C * lp.lam * (P->A - P->B * sqrt(1. + D * lp.phi * lp.phi));
    14. 

  14. 	xy.y = C * lp.phi;
    15. 

  15. 	return (xy);
    16. 

  16. }
    17. 

  17. INVERSE(s_inverse); /* spheroid */
    18. 

  18. 	lp.phi = xy.y / C;
    19. 

  19. 	lp.lam = xy.x / (C * (P->A - P->B * sqrt(1. + D * lp.phi * lp.phi)));
    20. 

  20. 	return (lp);
    21. 

  21. }
    22. 

  22. FREEUP; if (P) pj_dalloc(P); }
    23. 

  23. 	static PJ *
    24. 

  24. setup(PJ *P) {
    25. 

  25. 	P->es = 0.; P->inv = s_inverse; P->fwd = s_forward;
    26. 

  26. 	return P;
    27. 

  27. }
    28. 

  28. ENTRY0(putp5) P->A = 2.; P->B = 1.; ENDENTRY(setup(P))
    29. 

  29. ENTRY0(putp5p) P->A = 1.5; P->B = 0.5; ENDENTRY(setup(P))
    30.