diff options
Diffstat (limited to 'ast/cmpframe.h')
| -rw-r--r-- | ast/cmpframe.h | 428 |
1 files changed, 428 insertions, 0 deletions
diff --git a/ast/cmpframe.h b/ast/cmpframe.h new file mode 100644 index 0000000..f692aa1 --- /dev/null +++ b/ast/cmpframe.h @@ -0,0 +1,428 @@ +#if !defined( CMPFRAME_INCLUDED ) /* Include this file only once */ +#define CMPFRAME_INCLUDED +/* +*+ +* Name: +* cmpframe.h + +* Type: +* C include file. + +* Purpose: +* Define the interface to the CmpFrame class. + +* Invocation: +* #include "cmpframe.h" + +* Description: +* This include file defines the interface to the CmpFrame class +* and provides the type definitions, function prototypes and +* macros, etc. needed to use this class. +* +* A CmpFrame is a compound Frame which allows two component Frames +* (of any class) to be merged together to form a more complex +* Frame. The axes of the two component Frames then appear together +* in the resulting CmpFrame (those of the first Frame, followed by +* those of the second Frame). +* +* Since a CmpFrame is itself a Frame, it can be used as a +* component in forming further CmpFrames. Frames of arbitrary +* complexity may be built from simple individual Frames in this +* way. + +* Inheritance: +* The CmpFrame class inherits from the Frame class. + +* Attributes Over-Ridden: +* Domain (string) +* A string which may be used to identify a CmpFrame and used as +* an additional key when matching a target CmpFrame with a +* template. The CmpFrame class re-defines the default value to +* "CMP". +* MaxAxes (integer) +* Specifies the maximum number of axes in a target Frame that +* can be matched when using the CmpFrame as a template. The +* CmpFrame class sets this to be the sum of the MaxAxes +* attribute values for the two component Frames contained by +* the CmpFrame. Any attempt to alter this value (other than +* through the component Frames) is simply ignored. +* MinAxes (integer) +* Specifies the minimum number of axes in a target Frame that +* can be matched when using the CmpFrame as a template. The +* CmpFrame class sets this to be the sum of the MinAxes +* attribute values for the two component Frames contained by +* the CmpFrame. Any attempt to alter this value (other than +* through the component Frames) is simply ignored. +* Naxes (integer) +* A read-only attribute that gives the number of axes in a +* CmpFrame (i.e. the number of dimensions of the space which +* the CmpFrame describes). This value is determined when the +* CmpFrame is created and is equal to the sum of the Naxes +* attributes of the two component Frames. +* Title (string) +* Specifies a string to be used as a title on (e.g.) graphs to +* describe the coordinate system which the CmpFrame +* represents. The CmpFrame class re-defines the default value +* to "<n>-D Compound Coordinate System", where <n> is the +* number of CmpFrame axes. + +* New Attributes Defined: +* None. + +* Methods Over-Ridden: +* Public: +* astDistance +* Calculate the distance between two points. +* astFormat +* Format a coordinate value for a CmpFrame axis. +* astNorm +* Normalise a set of CmpFrame coordinates. +* astOffset +* Calculate an offset along a geodesic curve. +* astPermAxes +* Permute the order of a CmpFrame's axes. +* astUnformat +* Read a formatted coordinate value for a CmpFrame axis. +* +* Protected: +* astAbbrev +* Abbreviate a formatted CmpFrame axis value by skipping leading +* fields. +* astClearDirection +* Clear the value of the Direction attribute for a CmpFrame axis. +* astClearFormat +* Clear the value of the Format attribute for a CmpFrame axis. +* astClearLabel +* Clear the value of the Label attribute for a CmpFrame axis. +* astClearMaxAxes +* Clear the value of the MaxAxes attribute for a CmpFrame. +* astClearMinAxes +* Clear the value of the MinAxes attribute for a CmpFrame. +* astClearSymbol +* Clear the value of the Symbol attribute for a CmpFrame axis. +* astClearUnit +* Clear the value of the Unit attribute for a CmpFrame axis. +* astGap +* Find a "nice" gap for tabulating CmpFrame axis values. +* astGetAxis +* Obtain a pointer to a specified Axis from a CmpFrame. +* astGetDirection +* Obtain the value of the Direction attribute for a CmpFrame axis. +* astGetDomain +* Obtain a pointer to the Domain attribute string for a CmpFrame. +* astGetFormat +* Obtain the value of the Format attribute for a CmpFrame axis. +* astGetLabel +* Obtain the value of the Label attribute for a CmpFrame axis. +* astGetMaxAxes +* Obtain the value of the MaxAxes attribute for a CmpFrame. +* astGetMinAxes +* Obtain the value of the MinAxes attribute for a CmpFrame. +* astGetNaxes +* Obtain the value of the Naxes attribute for a CmpFrame. +* astGetPerm +* Access the axis permutation array for a CmpFrame. +* astGetSymbol +* Obtain the value of the Symbol attribute for a CmpFrame axis. +* astGetTitle +* Obtain a pointer to the Title attribute string for a CmpFrame. +* astGetUnit +* Obtain the value of the Unit attribute for a CmpFrame axis. +* astMatch +* Determine if conversion is possible between two coordinate +* systems. +* astPrimaryFrame +* Uniquely identify a primary Frame and one of its axes. +* astSetAxis +* Set a new Axis for a CmpFrame. +* astSetDirection +* Set the value of the Direction attribute for a CmpFrame axis. +* astSetFormat +* Set the value of the Format attribute for a CmpFrame axis. +* astSetLabel +* Set the value of the Label attribute for a CmpFrame axis. +* astSetMaxAxes +* Set a value for the MaxAxes attribute of a CmpFrame. +* astSetMinAxes +* Set a value for the MinAxes attribute of a CmpFrame. +* astSetSymbol +* Set the value of the Symbol attribute for a CmpFrame axis. +* astSetUnit +* Set the value of the Unit attribute for a CmpFrame axis. +* astSubFrame +* Select axes from a CmpFrame and convert to the new coordinate +* system. +* astTestDirection +* Test if a Direction attribute value has been set for a CmpFrame +* axis. +* astTestFormat +* Test if a Format attribute value has been set for a CmpFrame axis. +* astTestLabel +* Test if a Label attribute value has been set for a CmpFrame axis. +* astTestMaxAxes +* Test if a value has been set for the MaxAxes attribute of a +* CmpFrame. +* astTestMinAxes +* Test if a value has been set for the MinAxes attribute of a +* CmpFrame. +* astTestSymbol +* Test if a Symbol attribute value has been set for a CmpFrame axis. +* astTestUnit +* Test if a Unit attribute value has been set for a CmpFrame axis. + +* New Methods Defined: +* Public: +* None. +* +* Protected: +* None. + +* Other Class Functions: +* Public: +* astIsACmpFrame +* Test class membership. +* astCmpFrame +* Create a CmpFrame. +* +* Protected: +* astCheckCmpFrame +* Validate class membership. +* astInitCmpFrame +* Initialise a CmpFrame. +* astInitCmpFrameVtab +* Initialise the virtual function table for the CmpFrame class. +* astLoadCmpFrame +* Load a CmpFrame. + +* Macros: +* None. + +* Type Definitions: +* Public: +* AstCmpFrame +* CmpFrame object type. +* +* Protected: +* AstCmpFrameVtab +* CmpFrame 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: +* RFWS: R.F. Warren-Smith (Starlink) + +* History: +* 6-MAR-1996 (RFWS): +* Original version. +* 27-FEB-1997 (RFWS): +* Improved the prologue. +* 25-FEB-1998 (RFWS): +* Over-ride the astUnformat method. +* 8-JAN-2003 (DSB): +* Added protected astInitCmpFrameVtab method. +*- +*/ + +/* Include files. */ +/* ============== */ +/* Interface definitions. */ +/* ---------------------- */ +#include "object.h" /* Base Object class */ +#include "frame.h" /* Parent Frame class */ + +#if defined(astCLASS) /* Protected */ +#include "channel.h" /* I/O channels */ +#endif + +/* C header files. */ +/* --------------- */ +#if defined(astCLASS) /* Protected */ +#include <stddef.h> +#endif + +/* Macros. */ +/* ------- */ +#if defined(astCLASS) || defined(astFORTRAN77) +#define STATUS_PTR status +#else +#define STATUS_PTR astGetStatusPtr +#endif + +/* Define a dummy __attribute__ macro for use on non-GNU compilers. */ +#ifndef __GNUC__ +# define __attribute__(x) /*NOTHING*/ +#endif + +#if defined(astCLASS) /* Protected */ + +/* The legal System values recognized by this class of Frame. */ +#define AST__COMP 0 + +#endif + +/* Type Definitions. */ +/* ================= */ +/* CmpFrame structure. */ +/* ------------------ */ +/* This structure contains all information that is unique to each + object in the class (e.g. its instance variables). */ +typedef struct AstCmpFrame { + +/* Attributes inherited from the parent class. */ + AstFrame frame; /* Parent class structure */ + +/* Attributes specific to objects in this class. */ + AstFrame *frame1; /* First component frame */ + AstFrame *frame2; /* Second component Frame */ + int *perm; /* Pointer to axis permutation array */ +} AstCmpFrame; + +/* 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 AstCmpFrameVtab { + +/* Properties (e.g. methods) inherited from the parent class. */ + AstFrameVtab frame_vtab; /* Parent class virtual function table */ + +/* A Unique identifier to determine class membership. */ + AstClassIdentifier id; + +/* Properties (e.g. methods) specific to this class. */ + +} AstCmpFrameVtab; + +#if defined(THREAD_SAFE) + +/* Define a structure holding all data items that are global within this + class. */ +typedef struct AstCmpFrameGlobals { + AstCmpFrameVtab Class_Vtab; + int Class_Init; + int *qsort_axes; + char Label_Buff[ 101 ]; + char Symbol_Buff[ 51 ]; + char GetDomain_Buff[ 101 ]; + char GetTitle_Buff[ 101 ]; +} AstCmpFrameGlobals; + +#endif + +#endif + +/* Function prototypes. */ +/* ==================== */ +/* Prototypes for standard class functions. */ +/* ---------------------------------------- */ +astPROTO_CHECK(CmpFrame) /* Check class membership */ +astPROTO_ISA(CmpFrame) /* Test class membership */ + +/* Constructor. */ +#if defined(astCLASS) /* Protected. */ +AstCmpFrame *astCmpFrame_( void *, void *, const char *, int *, ...); +#else +AstCmpFrame *astCmpFrameId_( void *, void *, const char *, ... )__attribute__((format(printf,3,4))); +#endif + +#if defined(astCLASS) /* Protected */ + +/* Initialiser. */ +AstCmpFrame *astInitCmpFrame_( void *, size_t, int, AstCmpFrameVtab *, + const char *, AstFrame *, AstFrame *, int * ); + +/* Vtab initialiser. */ +void astInitCmpFrameVtab_( AstCmpFrameVtab *, const char *, int * ); + +/* Loader. */ +AstCmpFrame *astLoadCmpFrame_( void *, size_t, AstCmpFrameVtab *, + const char *, AstChannel *, int * ); +/* Thread-safe initialiser for all global data used by this module. */ +#if defined(THREAD_SAFE) +void astInitCmpFrameGlobals_( AstCmpFrameGlobals * ); +#endif + +#endif + +/* Prototypes for member functions. */ +/* -------------------------------- */ + +/* 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 astCheckCmpFrame(this) astINVOKE_CHECK(CmpFrame,this,0) +#define astVerifyCmpFrame(this) astINVOKE_CHECK(CmpFrame,this,1) + +/* Test class membership. */ +#define astIsACmpFrame(this) astINVOKE_ISA(CmpFrame,this) + +/* Constructor. */ +#if defined(astCLASS) /* Protected. */ +#define astCmpFrame astINVOKE(F,astCmpFrame_) +#else +#define astCmpFrame astINVOKE(F,astCmpFrameId_) +#endif + +#if defined(astCLASS) /* Protected */ + +/* Initialiser. */ +#define astInitCmpFrame(mem,size,init,vtab,name,frame1,frame2) \ +astINVOKE(O,astInitCmpFrame_(mem,size,init,vtab,name,astCheckFrame(frame1),astCheckFrame(frame2),STATUS_PTR)) + +/* Vtab Initialiser. */ +#define astInitCmpFrameVtab(vtab,name) astINVOKE(V,astInitCmpFrameVtab_(vtab,name,STATUS_PTR)) +/* Loader. */ +#define astLoadCmpFrame(mem,size,vtab,name,channel) \ +astINVOKE(O,astLoadCmpFrame_(mem,size,vtab,name,astCheckChannel(channel),STATUS_PTR)) +#endif + +/* Interfaces to public member functions. */ +/* -------------------------------------- */ +/* Here we make use of astCheckCmpFrame to validate CmpFrame pointers + before use. This provides a contextual error report if a pointer + to the wrong sort of Object is supplied. */ + +#endif + + + + + |