plan9port

fork of plan9port with libvec, libstr and libsdb
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azequalarea.c (274B)

      1 #include <u.h>
      2 #include <libc.h>
      3 #include "map.h"
      4 
      5 int
      6 Xazequalarea(struct place *place, double *x, double *y)
      7 {
      8 	double r;
      9 	r = sqrt(1. - place->nlat.s);
     10 	*x = - r * place->wlon.s;
     11 	*y = - r * place->wlon.c;
     12 	return(1);
     13 }
     14 
     15 proj
     16 azequalarea(void)
     17 {
     18 	return(Xazequalarea);
     19 }