83 lines
3.1 KiB
C
83 lines
3.1 KiB
C
|
/*
|
||
|
|
* This file is part of libsharp.
|
||
|
|
*
|
||
|
|
* libsharp is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License as published by
|
||
|
|
* the Free Software Foundation; either version 2 of the License, or
|
||
|
|
* (at your option) any later version.
|
||
|
|
*
|
||
|
|
* libsharp is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
* GNU General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License
|
||
|
|
* along with libsharp; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* libsharp is being developed at the Max-Planck-Institut fuer Astrophysik
|
||
|
|
* and financially supported by the Deutsches Zentrum fuer Luft- und Raumfahrt
|
||
|
|
* (DLR).
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*! \file sharp_geomhelpers.h
|
||
|
|
* SHARP helper function for the creation of grid geometries
|
||
|
|
*
|
||
|
|
* Copyright (C) 2006-2011 Max-Planck-Society
|
||
|
|
* \author Martin Reinecke
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef PLANCK_SHARP_GEOMHELPERS_H
|
||
|
|
#define PLANCK_SHARP_GEOMHELPERS_H
|
||
|
|
|
||
|
|
#include "sharp_lowlevel.h"
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
extern "C" {
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*! Creates a geometry information describing a HEALPix map with an
|
||
|
|
Nside parameter \a nside.
|
||
|
|
\ingroup geominfogroup */
|
||
|
|
void sharp_make_healpix_geom_info (int nside, int stride,
|
||
|
|
sharp_geom_info **geom_info);
|
||
|
|
|
||
|
|
/*! Creates a geometry information describing a HEALPix map with an
|
||
|
|
Nside parameter \a nside. \a weight contains the relative ring
|
||
|
|
weights and must have \a 2*nside entries.
|
||
|
|
\ingroup geominfogroup */
|
||
|
|
void sharp_make_weighted_healpix_geom_info (int nside, int stride,
|
||
|
|
const double *weight, sharp_geom_info **geom_info);
|
||
|
|
|
||
|
|
/*! Creates a geometry information describing a Gaussian map with \a nrings
|
||
|
|
iso-latitude rings and \a nphi pixels per ring. The azimuth of the first
|
||
|
|
pixel in each ring is 0. The index difference between two adjacent pixels
|
||
|
|
in an iso-latitude ring is \a stride_lon, the index difference between the
|
||
|
|
two start pixels in consecutive iso-latitude rings is \a stride_lat.
|
||
|
|
\ingroup geominfogroup */
|
||
|
|
void sharp_make_gauss_geom_info (int nrings, int nphi, int stride_lon,
|
||
|
|
int stride_lat, sharp_geom_info **geom_info);
|
||
|
|
|
||
|
|
/*! Creates a geometry information describing an ECP map with \a nrings
|
||
|
|
iso-latitude rings and \a nphi pixels per ring. The azimuth of the first
|
||
|
|
pixel in each ring is \a phi0 (in radians). The index difference between
|
||
|
|
two adjacent pixels in an iso-latitude ring is \a stride_lon, the index
|
||
|
|
difference between the two start pixels in consecutive iso-latitude rings
|
||
|
|
is \a stride_lat.
|
||
|
|
\note The spacing of pixel centers is equidistant in colatitude and
|
||
|
|
longitude.
|
||
|
|
\note \a nrings must be an even number.
|
||
|
|
\note The sphere is pixelized in a way that the colatitude of the first ring
|
||
|
|
is \a 0.5*(pi/nrings). There are no pixel centers at the poles.
|
||
|
|
\ingroup geominfogroup */
|
||
|
|
void sharp_make_ecp_geom_info (int nrings, int nphi, double phi0,
|
||
|
|
int stride_lon, int stride_lat, sharp_geom_info **geom_info);
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif
|