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authorWilliam Joye <wjoye@cfa.harvard.edu>2017-12-08 18:57:06 (GMT)
committerWilliam Joye <wjoye@cfa.harvard.edu>2017-12-08 18:57:06 (GMT)
commit90a861b642f765d5657ab827aedabe3920ff9333 (patch)
tree88b93d468ca1feed91ef2958f46f3f74f1418aac /ast/pointset.h
parentfba23129f50db253ed3fbbaa23d6e342bf86068e (diff)
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-#if !defined( POINTSET_INCLUDED ) /* Include this file only once */
-#define POINTSET_INCLUDED
-/*
-*+
-* Name:
-* pointset.h
-
-* Type:
-* C include file.
-
-* Purpose:
-* Define the interface to the PointSet class.
-
-* Invocation:
-* #include "pointset.h"
-
-* Description:
-* This include file defines the interface to the PointSet class
-* and provides the type definitions, function prototypes and
-* macros, etc. needed to use this class.
-*
-* The PointSet class encapsulates sets of coordinate values
-* representing points in an N-dimensional space, to which
-* coordinate transformations may be applied. It also provides
-* memory allocation facilities for coordinate values.
-
-* Inheritance:
-* The PointSet class inherits from the Object class.
-
-* Attributes Over-Ridden:
-* None.
-
-* New Attributes Defined:
-* Ncoord (integer)
-* A read-only attribute that gives the number of coordinates
-* for each point in a PointSet (i.e. the number of dimensions
-* of the space in which the points reside). This value is
-* determined when the PointSet is created.
-* Npoint (integer)
-* A read-only attribute that gives the number of points that
-* can be stored in the PointSet. This value is determined when
-* the PointSet is created.
-* PointAccuracy (floating point)
-* This stores the absolute accuracies for each axis in the PointSet.
-
-* Methods Over-Ridden:
-* Public:
-* None.
-*
-* Protected:
-* ClearAttrib
-* Clear an attribute value for a PointSet.
-* GetAttrib
-* Get an attribute value for a PointSet.
-* SetAttrib
-* Set an attribute value for a PointSet.
-* TestAttrib
-* Test if an attribute value has been set for a PointSet.
-
-* New Methods Defined:
-* Public:
-* astAppendPoints
-* Append one PointSet to another.
-* astBndPoints
-* Find the axis bounds of the points in a PointSet.
-* astGetPoints
-* Get a pointer to the coordinate values associated with a PointSet.
-* astPermPoints
-* Permute coordinates within a PointSet.
-* astSetPoints
-* Associate coordinate values with a PointSet.
-* astSetNpoint
-* Reduce the size of a PointSet.
-* astSetSubPoints
-* Associate one PointSet with a subset of another.
-*
-* Protected:
-* astGetNpoint
-* Get the number of points in a PointSet.
-* astGetNcoord
-* Get the number of coordinate values per point from a PointSet.
-* astGetPointAccuracy
-* Get the curent value of the PointAcuracy attribute for an axis.
-* astSetPointAccuracy
-* Set a new value for the PointAcuracy attribute for an axis.
-* astTestPointAccuracy
-* Test the value of the PointAcuracy attribute for an axis.
-* astClearPointAccuracy
-* Clear the value of the PointAcuracy attribute for an axis.
-
-* Other Class Functions:
-* Public:
-* astIsAPointSet
-* Test class membership.
-* astPointSet
-* Create a PointSet.
-*
-* Protected:
-* astCheckPointSet
-* Validate class membership.
-* astInitPointSet
-* Initialise a PointSet.
-* astInitPointSetVtab
-* Initialise the virtual function table for the PointSet class.
-* astLoadPointSet
-* Load a PointSet.
-
-* Macros:
-* Public:
-* AST__BAD
-* Bad value flag for coordinate data.
-*
-* Protected:
-* astISBAD
-* Check if a value is AST__BAD or NaN.
-* astISGOOD
-* Check if a value is not AST__BAD or NaN.
-* astISNAN
-* Check if a value is NaN.
-
-* Type Definitions:
-* Public:
-* AstPointSet
-* PointSet object type.
-*
-* Protected:
-* AstPointSetVtab
-* PointSet 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)
-* DSB: David S. Berry (Starlink)
-
-* History:
-* 30-JAN-1996 (RFWS):
-* Original version.
-* 27-SEP-1996 (RFWS):
-* Added external interface and I/O facilities.
-* 8-JAN-2003 (DSB):
-* Added protected astInitPointSetVtab method.
-* 2-NOV-2004 (DSB):
-* Added PointAccuracy attribute.
-*-
-*/
-
-/* Include files. */
-/* ============== */
-
-/* Configuration results. */
-/* ---------------------- */
-#if HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-/* Interface definitions. */
-/* ---------------------- */
-#include "object.h" /* Base Object class */
-
-/* C header files. */
-/* --------------- */
-#include <float.h>
-#if defined(astCLASS) /* Protected */
-#include <stddef.h>
-#include <math.h>
-
-#if !HAVE_DECL_ISNAN
-# if HAVE_ISNAN
- /* Seems that math.h does not include a prototype for isnan etc */
- int isnan( double );
-# else
- /* isnan is not available prior to C99 so define
- alternative macros Note multiple evaluations of "x" in these
- macros!!! */
-# define isnan(x) ((x) != (x))
-# endif
-#endif
-
-#if !HAVE_DECL_ISFINITE
-# if HAVE_ISFINITE
- /* Seems that math.h does not include a prototype for isfinite */
- int isfinite( double );
-# else
- /* isfinite is not available prior to C99 so define
- alternative macros. Note multiple evaluations of "x" in these
- macros!!! */
-# define isfinite(x) (!isnan(x) && ((x) != (1.0/0.0)) && ((x) != (-1.0/0.0)))
-# endif
-#endif
-#endif
-
-/* Macros. */
-/* ======= */
-#if defined(astCLASS) || defined(astFORTRAN77)
-#define STATUS_PTR status
-#else
-#define STATUS_PTR astGetStatusPtr
-#endif
-
-/*
-*+
-* Name:
-* AST__BAD
-
-* Type:
-* Public macro.
-
-* Purpose:
-* Bad value flag for coordinate data.
-
-* Synopsis:
-* #include "pointset.h"
-* const double AST__BAD
-
-* Class Membership:
-* Defined by the PointSet class.
-
-* Description:
-* This macro expands to a const double value that is used to flag
-* coordinate values that are "bad" (i.e. undefined or
-* meaningless). Classes that implement coordinate transformations
-* should test coordinate values against this value, and
-* appropriately propagate bad values to their output.
-*-
-*/
-
-/* Define AST__BAD to be the most negative (normalised) double
- value. */
-
-#define AST__BAD (-(DBL_MAX))
-
-/*
-*+
-* Name:
-* AST__NAN
-
-* Type:
-* Public macro.
-
-* Purpose:
-* A value representing the double precision IEEE NaN value.
-
-* Synopsis:
-* #include "pointset.h"
-* const double AST__NAN
-
-* Class Membership:
-* Defined by the PointSet class.
-
-* Description:
-* This macro expands to a const double value that is used to indicate
-* that a IEEE NaN value should be used. Note, AST__NAN itself is a finite
-* double precision floating point value a little below the maximum
-* allowed value for a double. This value can be used as flag to
-* indicate that the corresponding IEEE NaN value should be used in its
-* place.
-
-*-
-*/
-#define AST__NAN (-(0.95*DBL_MAX))
-
-/*
-*+
-* Name:
-* AST__NANF
-
-* Type:
-* Public macro.
-
-* Purpose:
-* A value representing the single precision IEEE NaN value.
-
-* Synopsis:
-* #include "pointset.h"
-* const double AST__NANF
-
-* Class Membership:
-* Defined by the PointSet class.
-
-* Description:
-* This macro expands to a const float value that is used to indicate
-* that a IEEE NaN value should be used. Note, AST__NANF itself is a finite
-* single precision floating point value a little below the maximum
-* allowed value for a float. This value can be used as flag to
-* indicate that the corresponding IEEE NaN value should be used in its
-* place.
-
-*-
-*/
-#define AST__NANF ((float)-(0.95*FLT_MAX))
-
-#if defined(astCLASS) /* Protected */
-
-/*
-*+
-* Name:
-* astISNAN
-
-* Type:
-* Protected macro.
-
-* Purpose:
-* Test if a double is NaN.
-
-* Synopsis:
-* #include "pointset.h"
-* astISNAN(value)
-
-* Class Membership:
-* Defined by the PointSet class.
-
-* Description:
-* This macro expands to a integer valued expression which is zero
-* if and only if the supplied value equals NaN ("Not a Number").
-
-* Parameters:
-* value
-* The value to be tested. This should be a double.
-
-* Examples:
-* if( astISNAN(x) ) x = AST__BAD;
-* If "x" is NaN replace it with AST__BAD.
-
-* Notes:
-* - To avoid problems with some compilers, you should not leave
-* any white space around the macro arguments.
-* - On some system it is possible that the supplied macro argument
-* "x" may be evaluated multiple times. Therefore the evaluation of "x"
-* should have no side effects.
-*-
-*/
-
-#define astISNAN(value) isnan(value)
-
-/*
-*+
-* Name:
-* astISFINITE
-
-* Type:
-* Protected macro.
-
-* Purpose:
-* Test if a double is neither NaN nor Inf.
-
-* Synopsis:
-* #include "pointset.h"
-* astISFINITE(value)
-
-* Class Membership:
-* Defined by the PointSet class.
-
-* Description:
-* This macro expands to a integer valued expression which is zero
-* if and only if the supplied value equals NaN ("Not a Number") or Inf.
-
-* Parameters:
-* value
-* The value to be tested. This should be a double.
-
-* Examples:
-* if( !astISFINITE(x) ) x = AST__BAD;
-* If "x" is NaN or Inf replace it with AST__BAD.
-
-* Notes:
-* - To avoid problems with some compilers, you should not leave
-* any white space around the macro arguments.
-* - On some system it is possible that the supplied macro argument
-* "x" may be evaluated multiple times. Therefore the evaluation of "x"
-* should have no side effects.
-*-
-*/
-
-#define astISFINITE(value) isfinite(value)
-
-/*
-*+
-* Name:
-* astISGOOD
-
-* Type:
-* Protected macro.
-
-* Purpose:
-* Test if a double is neither AST__BAD, NaN or Inf.
-
-* Synopsis:
-* #include "pointset.h"
-* astISGOOD(value)
-
-* Class Membership:
-* Defined by the PointSet class.
-
-* Description:
-* This macro expands to a integer valued expression which is zero
-* if and only if the supplied value equals AST__BAD or is NaN ("Not a
-* Number") or "Inf".
-
-* Parameters:
-* value
-* The value to be tested. This should be a double.
-
-* Examples:
-* if( astISGOOD(x) ) y = x;
-* Checks that "x" is usable before assigning it to y.
-
-* Notes:
-* - To avoid problems with some compilers, you should not leave
-* any white space around the macro arguments.
-* - On some system it is possible that the supplied macro argument
-* "x" may be evaluated multiple times. Therefore the evaluation of "x"
-* should have no side effects.
-*-
-*/
-
-#define astISGOOD(value) ( (value) != AST__BAD && astISFINITE(value) )
-
-
-/*
-*+
-* Name:
-* astISBAD
-
-* Type:
-* Protected macro.
-
-* Purpose:
-* Test if a double is either AST__BAD, NaN, or Inf.
-
-* Synopsis:
-* #include "pointset.h"
-* astISBAD(value)
-
-* Class Membership:
-* Defined by the PointSet class.
-
-* Description:
-* This macro expands to a integer valued expression which is non-zero
-* if and only if the supplied value equals AST__BAD or is NaN ("Not a
-* Number"), or is Inf.
-
-* Parameters:
-* value
-* The value to be tested. This should be a double.
-
-* Examples:
-* if( astISBAD(x) ) astError( ... );
-* Reports an error if "x" is bad.
-
-* Notes:
-* - To avoid problems with some compilers, you should not leave
-* any white space around the macro arguments.
-* - On some system it is possible that the supplied macro argument
-* "x" may be evaluated multiple times. Therefore the evaluation of "x"
-* should have no side effects.
-*-
-*/
-
-#define astISBAD(value) ( (value) == AST__BAD || !astISFINITE(value))
-
-#endif
-
-/* Define a dummy __attribute__ macro for use on non-GNU compilers. */
-#ifndef __GNUC__
-# define __attribute__(x) /*NOTHING*/
-#endif
-
-/* Type Definitions. */
-/* ================= */
-/* PointSet structure. */
-/* ------------------- */
-/* This structure contains all information that is unique to each object in
- the class (e.g. its instance variables). */
-typedef struct AstPointSet {
-
-/* Attributes inherited from the parent class. */
- AstObject object; /* Parent class structure */
-
-/* Attributes specific to objects in this class. */
- double **ptr; /* Pointer to array of pointers to values */
- double *values; /* Pointer to array of coordinate values */
- int ncoord; /* Number of coordinate values per point */
- int npoint; /* Number of points */
- double *acc; /* Axis accuracies */
-} AstPointSet;
-
-/* 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 AstPointSetVtab {
-
-/* Properties (e.g. methods) inherited from the parent class. */
- AstObjectVtab object_vtab; /* Parent class virtual function table */
-
-/* A Unique identifier to determine class membership. */
- AstClassIdentifier id;
-
-/* Properties (e.g. methods) specific to this class. */
- AstPointSet *(* AppendPoints)( AstPointSet *, AstPointSet *, int * );
- double **(* GetPoints)( AstPointSet *, int * );
- int (* GetNcoord)( const AstPointSet *, int * );
- int (* GetNpoint)( const AstPointSet *, int * );
- void (* BndPoints)( AstPointSet *, double *, double *, int * );
- void (* PermPoints)( AstPointSet *, int, const int[], int * );
- void (* SetNpoint)( AstPointSet *, int, int * );
- void (* SetPoints)( AstPointSet *, double **, int * );
- void (* SetSubPoints)( AstPointSet *, int, int, AstPointSet *, int * );
- void (* ShowPoints)( AstPointSet *, int * );
- int (* ReplaceNaN)( AstPointSet *, int * );
-
- double (* GetPointAccuracy)( AstPointSet *, int, int * );
- int (* TestPointAccuracy)( AstPointSet *, int, int * );
- void (* ClearPointAccuracy)( AstPointSet *, int, int * );
- void (* SetPointAccuracy)( AstPointSet *, int, double, int * );
-
-} AstPointSetVtab;
-
-#if defined(THREAD_SAFE)
-
-/* Define a structure holding all data items that are global within this
- class. */
-typedef struct AstPointSetGlobals {
- AstPointSetVtab Class_Vtab;
- int Class_Init;
- char GetAttrib_Buff[ 101 ];
-} AstPointSetGlobals;
-
-#endif
-
-#endif
-
-/* Function prototypes. */
-/* ==================== */
-/* Prototypes for standard class functions. */
-/* ---------------------------------------- */
-astPROTO_CHECK(PointSet) /* Check class membership */
-astPROTO_ISA(PointSet) /* Test class membership */
-
-/* Constructor. */
-#if defined(astCLASS) /* Protected. */
-AstPointSet *astPointSet_( int, int, const char *, int *, ...);
-#else
-AstPointSet *astPointSetId_( int, int, const char *, ... )__attribute__((format(printf,3,4)));
-#endif
-
-#if defined(astCLASS) /* Protected */
-
-/* Initialiser. */
-AstPointSet *astInitPointSet_( void *, size_t, int, AstPointSetVtab *,
- const char *, int, int, int * );
-
-/* Vtab initialiser. */
-void astInitPointSetVtab_( AstPointSetVtab *, const char *, int * );
-
-/* Loader. */
-AstPointSet *astLoadPointSet_( void *, size_t, AstPointSetVtab *,
- const char *, AstChannel *, int * );
-
-/* Thread-safe initialiser for all global data used by this module. */
-#if defined(THREAD_SAFE)
-void astInitPointSetGlobals_( AstPointSetGlobals * );
-#endif
-
-#endif
-
-/* Prototypes for member functions. */
-/* -------------------------------- */
-double **astGetPoints_( AstPointSet *, int * );
-void astPermPoints_( AstPointSet *, int, const int[], int * );
-void astSetPoints_( AstPointSet *, double **, int * );
-void astSetNpoint_( AstPointSet *, int, int * );
-void astSetSubPoints_( AstPointSet *, int, int, AstPointSet *, int * );
-AstPointSet *astAppendPoints_( AstPointSet *, AstPointSet *, int * );
-void astBndPoints_( AstPointSet *, double *, double *, int * );
-int astReplaceNaN_( AstPointSet *, int * );
-void astShowPoints_( AstPointSet *, int * );
-
-# if defined(astCLASS) /* Protected */
-int astGetNcoord_( const AstPointSet *, int * );
-int astGetNpoint_( const AstPointSet *, int * );
-
-double astGetPointAccuracy_( AstPointSet *, int, int * );
-int astTestPointAccuracy_( AstPointSet *, int, int * );
-void astClearPointAccuracy_( AstPointSet *, int, int * );
-void astSetPointAccuracy_( AstPointSet *, int, double, int * );
-
-double astCheckNaN_( double );
-float astCheckNaNF_( float );
-
-#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 astCheckPointSet(this) astINVOKE_CHECK(PointSet,this,0)
-#define astVerifyPointSet(this) astINVOKE_CHECK(PointSet,this,1)
-
-/* Test class membership. */
-#define astIsAPointSet(this) astINVOKE_ISA(PointSet,this)
-
-/* Constructor. */
-#if defined(astCLASS) /* Protected. */
-#define astPointSet astINVOKE(F,astPointSet_)
-#else
-#define astPointSet astINVOKE(F,astPointSetId_)
-#endif
-
-#if defined(astCLASS) /* Protected */
-
-/* Initialiser. */
-#define astInitPointSet(mem,size,init,vtab,name,npoint,ncoord) \
-astINVOKE(O,astInitPointSet_(mem,size,init,vtab,name,npoint,ncoord,STATUS_PTR))
-
-/* Vtab Initialiser. */
-#define astInitPointSetVtab(vtab,name) astINVOKE(V,astInitPointSetVtab_(vtab,name,STATUS_PTR))
-/* Loader. */
-#define astLoadPointSet(mem,size,vtab,name,channel) \
-astINVOKE(O,astLoadPointSet_(mem,size,vtab,name,astCheckChannel(channel),STATUS_PTR))
-#endif
-
-/* Interfaces to public member functions. */
-/* -------------------------------------- */
-/* Here we make use of astCheckPointSet to validate PointSet pointers
- before use. This provides a contextual error report if a pointer
- to the wrong sort of Object is supplied. */
-
-#define astGetPoints(this) \
-astINVOKE(V,astGetPoints_(astCheckPointSet(this),STATUS_PTR))
-#define astPermPoints(this,forward,perm) \
-astINVOKE(V,astPermPoints_(astCheckPointSet(this),forward,perm,STATUS_PTR))
-#define astSetPoints(this,ptr) \
-astINVOKE(V,astSetPoints_(astCheckPointSet(this),ptr,STATUS_PTR))
-#define astSetNpoint(this,np) \
-astINVOKE(V,astSetNpoint_(astCheckPointSet(this),np,STATUS_PTR))
-#define astSetSubPoints(point1,point,coord,point2) \
-astINVOKE(V,astSetSubPoints_(astCheckPointSet(point1),point,coord,astCheckPointSet(point2),STATUS_PTR))
-#define astAppendPoints(this,that) \
-astINVOKE(O,astAppendPoints_(astCheckPointSet(this),astCheckPointSet(that),STATUS_PTR))
-#define astBndPoints(this,lbnd,ubnd) \
-astINVOKE(V,astBndPoints_(astCheckPointSet(this),lbnd,ubnd,STATUS_PTR))
-#define astReplaceNaN(this) \
-astINVOKE(V,astReplaceNaN_(astCheckPointSet(this),STATUS_PTR))
-#define astShowPoints(this) \
-astINVOKE(V,astShowPoints_(astCheckPointSet(this),STATUS_PTR))
-
-#if defined(astCLASS) /* Protected */
-#define astGetNpoint(this) \
-astINVOKE(V,astGetNpoint_(astCheckPointSet(this),STATUS_PTR))
-#define astGetNcoord(this) \
-astINVOKE(V,astGetNcoord_(astCheckPointSet(this),STATUS_PTR))
-
-#define astClearPointAccuracy(this,axis) \
-astINVOKE(V,astClearPointAccuracy_(astCheckPointSet(this),axis,STATUS_PTR))
-#define astGetPointAccuracy(this,axis) \
-astINVOKE(V,astGetPointAccuracy_(astCheckPointSet(this),axis,STATUS_PTR))
-#define astSetPointAccuracy(this,axis,value) \
-astINVOKE(V,astSetPointAccuracy_(astCheckPointSet(this),axis,value,STATUS_PTR))
-#define astTestPointAccuracy(this,axis) \
-astINVOKE(V,astTestPointAccuracy_(astCheckPointSet(this),axis,STATUS_PTR))
-
-#define astCheckNaNF(value) astCheckNaNF_(value)
-#define astCheckNaN(value) astCheckNaN_(value)
-
-
-#endif
-#endif
-
-
-
-
-