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#if !defined( XPHMAP_INCLUDED ) /* Include this file only once */
#define XPHMAP_INCLUDED
/*
*+
* Name:
* xphmap.h
* Type:
* C include file.
* Purpose:
* Define the interface to the XphMap class.
* Invocation:
* #include "xphmap.h"
* Description:
* This include file defines the interface to the XphMap class and
* provides the type definitions, function prototypes and macros,
* etc. needed to use this class.
*
* The XphMap class implements Mappings which perform a "zoom"
* transformation by multiplying all coordinate values by the same
* scale factor (the inverse transformation is performed by
* dividing by this scale factor).
* Inheritance:
* The XphMap class inherits from the Mapping class.
* Copyright:
* Copyright (C) 2018 East Asian Observatory
* Research Councils
* Licence:
* This program is free software: you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation, either
* version 3 of the License, or (at your option) any later
* version.
*
* This program 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General
* License along with this program. If not, see
* <http://www.gnu.org/licenses/>.
* Authors:
* DSB: David S Berry (EAO)
* History:
* 18-OCT-2018 (DSB):
* Original version.
*-
*/
/* Include files. */
/* ============== */
/* Interface definitions. */
/* ---------------------- */
#include "mapping.h" /* Coordinate mappings (parent class) */
#if defined(astCLASS) /* Protected */
#include "channel.h" /* I/O channels */
#endif
/* C header files. */
/* --------------- */
#if defined(astCLASS) /* Protected */
#include <stddef.h>
#endif
/* Macros */
/* ====== */
/* Define a dummy __attribute__ macro for use on non-GNU compilers. */
#ifndef __GNUC__
# define __attribute__(x) /*NOTHING*/
#endif
#if defined(astCLASS) /* Protected */
#define AST__HPX0 0 /* Projection types */
#define AST__HPX12 1
#define AST__XPHN 2
#define AST__XPHS 3
#define AST__MXPRJHPX 3 /* Highest projection type */
#endif
/* The maximum MOC order supported by this class. It's value, 27, is lower
than the maximum of 29 specified by the MOC standard, and is chosen so
that the X and Y grid indices within the whole sky HPX projection can
be stored in a signed 4 byte integer. */
#define AST__MXORDHPX 27
/* Type Definitions. */
/* ================= */
/* XphMap structure. */
/* ------------------ */
/* This structure contains all information that is unique to each object in
the class (e.g. its instance variables). */
typedef struct AstXphMap {
/* Attributes inherited from the parent class. */
AstMapping mapping; /* Parent class structure */
/* Attributes specific to objects in this class. */
int order; /* HEALPix order */
int type; /* Projection type */
} AstXphMap;
/* Virtual function table. */
/* ----------------------- */
/* This table contains all information that is the same for all
objects in the class (e.g. pointers to its virtual functions). */
#if defined(astCLASS) /* Protected */
typedef struct AstXphMapVtab {
/* Properties (e.g. methods) inherited from the parent class. */
AstMappingVtab mapping_vtab; /* Parent class virtual function table */
/* A Unique identifier to determine class membership. */
AstClassIdentifier id;
/* Properties (e.g. methods) specific to this class. */
} AstXphMapVtab;
#if defined(THREAD_SAFE)
/* Define a structure holding all data items that are global within this
class. */
typedef struct AstXphMapGlobals {
AstXphMapVtab Class_Vtab;
int Class_Init;
} AstXphMapGlobals;
#endif
#endif
/* Function prototypes. */
/* ==================== */
/* Prototypes for standard class functions. */
/* ---------------------------------------- */
astPROTO_CHECK(XphMap) /* Check class membership */
astPROTO_ISA(XphMap) /* Test class membership */
/* Constructor. */
#if defined(astCLASS) /* Protected. */
AstXphMap *astXphMap_( int, int, const char *, int *, ...);
#endif
#if defined(astCLASS) /* Protected */
/* Initialiser. */
AstXphMap *astInitXphMap_( void *, size_t, int, AstXphMapVtab *,
const char *, int, int, int * );
/* Vtab initialiser. */
void astInitXphMapVtab_( AstXphMapVtab *, const char *, int * );
/* Loader. */
AstXphMap *astLoadXphMap_( void *, size_t, AstXphMapVtab *,
const char *, AstChannel *, int * );
/* Thread-safe initialiser for all global data used by this module. */
#if defined(THREAD_SAFE)
void astInitXphMapGlobals_( AstXphMapGlobals * );
#endif
#endif
/* Prototypes for member functions. */
/* -------------------------------- */
# if defined(astCLASS) /* Protected */
#endif
/* Function interfaces. */
/* ==================== */
/* These macros are wrap-ups for the functions defined by this class
to make them easier to invoke (e.g. to avoid type mis-matches when
passing pointers to objects from derived classes). */
/* Interfaces to standard class functions. */
/* --------------------------------------- */
/* Some of these functions provide validation, so we cannot use them
to validate their own arguments. We must use a cast when passing
object pointers (so that they can accept objects from derived
classes). */
/* Check class membership. */
#define astCheckXphMap(this) astINVOKE_CHECK(XphMap,this,0)
#define astVerifyXphMap(this) astINVOKE_CHECK(XphMap,this,1)
/* Test class membership. */
#define astIsAXphMap(this) astINVOKE_ISA(XphMap,this)
/* Constructor. */
#if defined(astCLASS) /* Protected. */
#define astXphMap astINVOKE(F,astXphMap_)
#endif
#if defined(astCLASS) /* Protected */
/* Initialiser. */
#define astInitXphMap(mem,size,init,vtab,name,order,type) \
astINVOKE(O,astInitXphMap_(mem,size,init,vtab,name,order,type,STATUS_PTR))
/* Vtab Initialiser. */
#define astInitXphMapVtab(vtab,name) astINVOKE(V,astInitXphMapVtab_(vtab,name,STATUS_PTR))
/* Loader. */
#define astLoadXphMap(mem,size,vtab,name,channel) \
astINVOKE(O,astLoadXphMap_(mem,size,vtab,name,astCheckChannel(channel),STATUS_PTR))
#endif
/* Interfaces to public member functions. */
/* -------------------------------------- */
/* Here we make use of astCheckXphMap to validate XphMap pointers
before use. This provides a contextual error report if a pointer
to the wrong sort of Object is supplied. */
#if defined(astCLASS) /* Protected */
#endif
#endif
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