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Sourcecode: r-cran-mapproj version File versions  Download package

laue.c

/* RSB #include <u.h>
#include <libc.h>*/
#include "map.h"


static int
Xlaue(struct place *place, double *x, double *y)
{
      double r;
      if(place->nlat.l<PI/4+FUZZ)
            return(-1);
      r = tan(PI-2*place->nlat.l);
      if(r>3)
            return(-1);
      *x = - r * place->wlon.s;
      *y = - r * place->wlon.c;
      return(1);
}

proj
laue(void)
{
      return(Xlaue);
}

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