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Diffstat (limited to 'ast/specmap.h')
-rw-r--r-- | ast/specmap.h | 282 |
1 files changed, 282 insertions, 0 deletions
diff --git a/ast/specmap.h b/ast/specmap.h new file mode 100644 index 0000000..ac2319a --- /dev/null +++ b/ast/specmap.h @@ -0,0 +1,282 @@ +#if !defined( SPECMAP_INCLUDED ) /* Include this file only once */ +#define SPECMAP_INCLUDED +/* +*+ +* Name: +* specmap.h + +* Type: +* C include file. + +* Purpose: +* Define the interface to the SpecMap class. + +* Invocation: +* #include "specmap.h" + +* Description: +* This include file defines the interface to the SpecMap class and +* provides the type definitions, function prototypes and macros, +* etc. needed to use this class. +* +* The SpecMap class encapsulates various ecptral coordinate +* conversions. Since, typically, a sequence of these conversions is +* required, a SpecMap can be used to accumulate a series of conversions +* which it then applies in sequence. + +* Inheritance: +* The SpecMap class inherits from the Mapping class. + +* Attributes Over-Ridden: +* None. + +* New Attributes Defined: +* None. + +* Methods Over-Ridden: +* Public: +* astTransform +* Use an SpecMap to transform a set of points. + +* Protected: +* astMapMerge +* Simplify a sequence of Mappings containing an SpecMap. + +* New Methods Defined: +* Public: +* astSpecAdd +* Add a coordinate conversion step to an SpecMap. + +* Private: +* None. + +* Other Class Functions: +* Public: +* astIsASpecMap +* Test class membership. +* astSpecMap +* Create an SpecMap. + +* Protected: +* astCheckSpecMap +* Validate class membership. +* astInitSpecMap +* Initialise an SpecMap. +* astLoadSpecMap +* Load an SpecMap. + +* Macros: +* None. + +* Type Definitions: +* Public: +* AstSpecMap +* SpecMap object type. + +* Protected: +* AstSpecMapVtab +* SpecMap virtual function table type. + +* Feature Test Macros: +* astCLASS +* If the astCLASS macro is undefined, only public symbols are +* made available, otherwise protected symbols (for use in other +* class implementations) are defined. This macro also affects +* the reporting of error context information, which is only +* provided for external calls to the AST library. + +* Copyright: +* Copyright (C) 1997-2006 Council for the Central Laboratory of the +* 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 (Starlink) + +* History: +* 8-NOV-2002 (DSB): +* Original version. +*- +*/ + +/* Include files. */ +/* ============== */ +/* Interface definitions. */ +/* ---------------------- */ +#include "mapping.h" /* Coordinate mappings (parent class) */ + +#if defined(astCLASS) /* Protected */ +#include "pointset.h" /* Sets of points/coordinates */ +#include "channel.h" /* I/O channels */ +#endif + +/* C header files. */ +/* --------------- */ +#if defined(astCLASS) /* Protected */ +#include <stddef.h> +#endif + +/* Macros */ +/* ------ */ +/* Physical constants taken from Chapter 15 of the "Explanatory Supplement + to the Astronomical Ephemeris". */ +#define AST__C 2.99792458E8 /* Speed of light (metres per second) */ +#define AST__H 6.6260755E-34 /* Plank constant (Joule.seconds) */ + +/* Define a dummy __attribute__ macro for use on non-GNU compilers. */ +#ifndef __GNUC__ +# define __attribute__(x) /*NOTHING*/ +#endif + +/* SpecMap structure. */ +/* ----------------- */ +/* This structure contains all information that is unique to each + object in the class (e.g. its instance variables). */ +typedef struct AstSpecMap { + +/* Attributes inherited from the parent class. */ + AstMapping mapping; /* Parent class structure */ + +/* Attributes specific to objects in this class. */ + int *cvttype; /* Pointer to array of conversion types */ + double **cvtargs; /* Pointer to argument list pointer array */ + int ncvt; /* Number of conversions to perform */ +} AstSpecMap; + +/* 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 AstSpecMapVtab { + +/* 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. */ + void (* SpecAdd)( AstSpecMap *, const char *, const double[], int * ); +} AstSpecMapVtab; + +#if defined(THREAD_SAFE) + +/* Define a structure holding all data items that are global within the + object.c file. */ + +typedef struct AstSpecMapGlobals { + AstSpecMapVtab Class_Vtab; + int Class_Init; +} AstSpecMapGlobals; + + +/* Thread-safe initialiser for all global data used by this module. */ +void astInitSpecMapGlobals_( AstSpecMapGlobals * ); + +#endif + + +#endif + +/* Function prototypes. */ +/* ==================== */ +/* Prototypes for standard class functions. */ +/* ---------------------------------------- */ +astPROTO_CHECK(SpecMap) /* Check class membership */ +astPROTO_ISA(SpecMap) /* Test class membership */ + +/* Constructor. */ +#if defined(astCLASS) /* Protected. */ +AstSpecMap *astSpecMap_( int, int, const char *, int *, ...); +#else +AstSpecMap *astSpecMapId_( int, int, const char *, ... )__attribute__((format(printf,3,4))); +#endif + +#if defined(astCLASS) /* Protected */ + +/* Initialiser. */ +AstSpecMap *astInitSpecMap_( void *, size_t, int, AstSpecMapVtab *, + const char *, int, int, int * ); + +/* Vtab initialiser. */ +void astInitSpecMapVtab_( AstSpecMapVtab *, const char *, int * ); + +/* Loader. */ +AstSpecMap *astLoadSpecMap_( void *, size_t, AstSpecMapVtab *, + const char *, AstChannel *, int * ); +#endif + +/* Prototypes for member functions. */ +/* -------------------------------- */ +void astSpecAdd_( AstSpecMap *, const char *, const double[], int * ); + +/* 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 astCheckSpecMap(this) astINVOKE_CHECK(SpecMap,this,0) +#define astVerifySpecMap(this) astINVOKE_CHECK(SpecMap,this,1) + +/* Test class membership. */ +#define astIsASpecMap(this) astINVOKE_ISA(SpecMap,this) + +/* Constructor. */ +#if defined(astCLASS) /* Protected. */ +#define astSpecMap astINVOKE(F,astSpecMap_) +#else +#define astSpecMap astINVOKE(F,astSpecMapId_) +#endif + +#if defined(astCLASS) /* Protected */ + +/* Initialiser. */ +#define astInitSpecMap(mem,size,init,vtab,name,nin,flags) \ +astINVOKE(O,astInitSpecMap_(mem,size,init,vtab,name,nin,flags,STATUS_PTR)) + +/* Vtab Initialiser. */ +#define astInitSpecMapVtab(vtab,name) astINVOKE(V,astInitSpecMapVtab_(vtab,name,STATUS_PTR)) +/* Loader. */ +#define astLoadSpecMap(mem,size,vtab,name,channel) \ +astINVOKE(O,astLoadSpecMap_(mem,size,vtab,name,astCheckChannel(channel),STATUS_PTR)) +#endif + +/* Interfaces to public member functions. */ +/* -------------------------------------- */ +/* Here we make use of astCheckSpecMap to validate SpecMap pointers + before use. This provides a contextual error report if a pointer + to the wrong sort of Object is supplied. */ +#define astSpecAdd(this,cvt,args) \ +astINVOKE(V,astSpecAdd_(astCheckSpecMap(this),cvt,args,STATUS_PTR)) + +#endif + + + + + |