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/Proj4/PJ_denoy.c

http://github.com/route-me/route-me
C | 21 lines | 21 code | 0 blank | 0 comment | 1 complexity | 32da94a01d246974ff8fd3de73e68119 MD5 | raw file
    

  1. #ifndef lint
    2. 

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

  3. #endif
    4. 

  4. #define PJ_LIB__
    5. 

  5. #include	"projects.h"
    6. 

  6. PROJ_HEAD(denoy, "Denoyer Semi-Elliptical") "\n\tPCyl., no inv., Sph.";
    7. 

  7. #define C0	0.95
    8. 

  8. #define C1	-.08333333333333333333
    9. 

  9. #define C3	.00166666666666666666
    10. 

  10. #define D1	0.9
    11. 

  11. #define D5	0.03
    12. 

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

  13. 	xy.y = lp.phi;
    14. 

  14. 	xy.x = lp.lam;
    15. 

  15. 	lp.lam = fabs(lp.lam);
    16. 

  16. 	xy.x *= cos((C0 + lp.lam * (C1 + lp.lam * lp.lam * C3)) *
    17. 

  17. 		(lp.phi * (D1 + D5 * lp.phi * lp.phi * lp.phi * lp.phi)));
    18. 

  18. 	return (xy);
    19. 

  19. }
    20. 

  20. FREEUP; if (P) pj_dalloc(P); }
    21. 

  21. ENTRY0(denoy) P->es = 0.; P->fwd = s_forward; ENDENTRY(P)
    22. 

  22.