1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
|
// Copyright 2021 - Unistra/CNRS
// The MOC API project is distributed under the terms
// of the GNU General Public License version 3.
//
//This file is part of MOC API java project.
//
// MOC API java project 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, version 3 of the License.
//
// MOC API java project 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.
//
// The GNU General Public License is available in COPYING file
// along with MOC API java project.
//
package cds.moc;
/** HEALPix Interface wrapper for Moc usage
* Encapsulate the usage HEALPix
*
* The HEALPix ordering is always NESTED
*
* @author Pierre Fernique [CDS]
* @version 1.0 dec 2011 - creation
*/
public interface HealpixImpl {
/** Provide the HEALPix number associated to a coord, for a given order
* @param order HEALPix order [0..MAXORDER]
* @param lon longitude (expressed in the Healpix frame)
* @param lat latitude (expressed in the Healpix frame)
* @return HEALPix number
* @throws Exception
*/
public long ang2pix(int order,double lon, double lat) throws Exception;
/** Provide the galactic coord associated to an HEALPix number, for a given order
* @param order HEALPix order [0..MAXORDER]
* @param npix HEALPix number
* @return spherical coord (lon,lat) (expressed in the Healpix frame)
* @throws Exception
*/
public abstract double [] pix2ang(int order,long npix) throws Exception;
/** Provide the list of HEALPix numbers fully covering a circle (for a specified order)
* @param order Healpix order
* @param lon center longitude (expressed in the Healpix frame)
* @param lat center latitude (expressed in the Healpix frame)
* @param radius circle radius (in degrees)
* @return
* @throws Exception
*/
public long [] queryDisc(int order, double lon, double lat, double radius) throws Exception;
}
|
