source: Sophya/trunk/SophyaLib/SkyMap/HEALPixUtils.h@ 4034

Last change on this file since 4034 was 2985, checked in by ansari, 19 years ago

1/ Suite codage HEALPix-NEST , test avec transforme Ylm OK
2/ Petites modifs et corrections diverses (ajout SizeIndex2Resol() par exemple)

Reza 21 Juin 2006

File size: 999 bytes
Line 
1#ifndef HEALPixUtils_SEEN
2#define HEALPixUtils_SEEN
3#include "machdefs.h"
4#include "ndatablock.h"
5
6// utilitaires de pixelisation HEALPix
7
8
9namespace SOPHYA {
10
11 // Utility class to compute index to/from angle conversion in HEALPix
12 // spherical map pixelisation
13
14class HEALPix {
15public :
16 static int_4 nest2ring(int_4 nside,int_4 ipnest) ;
17 static int_4 ring2nest(int_4 nside,int_4 ipring) ;
18
19 static int_4 ang2pix_ring(int_4 nside,double theta,double phi) ;
20 static int_4 ang2pix_nest(int_4 nside,double theta,double phi) ;
21 static void pix2ang_ring(int_4 nside,int_4 ipix,double& theta,double& phi) ;
22 static void pix2ang_nest(int_4 nside,int_4 ipix,double& theta,double& phi) ;
23
24 static int_4 ResolToSizeIndex(double res);
25 static inline int_4 ResolToNSide(double res)
26 { return ResolToSizeIndex(res); }
27 static double SizeIndexToResol(int_4 m);
28 static inline double NSideToResol(int_4 m)
29 { return SizeIndexToResol(m); }
30};
31
32
33
34} // Fin du namespace
35
36#endif
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