1 files changed, 241 insertions, 0 deletions
diff --git a/ast/circle.h b/ast/circle.h
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+++ b/ast/circle.h
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+#if !defined( CIRCLE_INCLUDED ) /* Include this file only once */
+#define CIRCLE_INCLUDED
+/*
+*+
+*  Name:
+*     circle.h
+
+*  Type:
+*     C include file.
+
+*  Purpose:
+*     Define the interface to the Circle class.
+
+*  Invocation:
+*     #include "circle.h"
+
+*  Description:
+*     This include file defines the interface to the Circle class and
+*     provides the type definitions, function prototypes and macros,
+*     etc.  needed to use this class.
+*
+*     The Circle class implement a Region which represents a simple interval
+*     on each axis of the encapsulated Frame
+
+*  Inheritance:
+*     The Circle class inherits from the Region class.
+
+*  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:
+*     31-AUG-2004 (DSB):
+*        Original version.
+*-
+*/
+
+/* Include files. */
+/* ============== */
+/* Interface definitions. */
+/* ---------------------- */
+#include "region.h"              /* Coordinate regions (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
+
+/* Type Definitions. */
+/* ================= */
+/* Circle structure. */
+/* ------------------ */
+/* This structure contains all information that is unique to each object in
+   the class (e.g. its instance variables). */
+typedef struct AstCircle {
+
+/* Attributes inherited from the parent class. */
+   AstRegion region;             /* Parent class structure */
+
+/* Attributes specific to objects in this class. */
+   double *centre;               /* Circle centre coords */
+   double radius;                /* Circle radius */
+   double *lb;                   /* Lower limits of mesh bounding box */
+   double *ub;                   /* Upper limit of mesh bounding box */
+   int stale;                    /* Is Cached information stale? */
+
+} AstCircle;
+
+/* 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 AstCircleVtab {
+
+/* Properties (e.g. methods) inherited from the parent class. */
+   AstRegionVtab region_vtab;    /* Parent class virtual function table */
+
+/* A Unique identifier to determine class membership. */
+   AstClassIdentifier id;
+
+/* Properties (e.g. methods) specific to this class. */
+   void (* CirclePars)( AstCircle *, double *, double *, double *, int * );
+} AstCircleVtab;
+
+#if defined(THREAD_SAFE)
+
+/* Define a structure holding all data items that are global within the
+   object.c file. */
+
+typedef struct AstCircleGlobals {
+   AstCircleVtab Class_Vtab;
+   int Class_Init;
+} AstCircleGlobals;
+
+
+/* Thread-safe initialiser for all global data used by this module. */
+void astInitCircleGlobals_( AstCircleGlobals * );
+
+#endif
+
+
+#endif
+
+/* Function prototypes. */
+/* ==================== */
+/* Prototypes for standard class functions. */
+/* ---------------------------------------- */
+astPROTO_CHECK(Circle)          /* Check class membership */
+astPROTO_ISA(Circle)            /* Test class membership */
+
+/* Constructor. */
+#if defined(astCLASS)            /* Protected. */
+AstCircle *astCircle_( void *, int, const double[], const double[], AstRegion *, const char *, int *, ...);
+#else
+AstCircle *astCircleId_( void *, int, const double[], const double[],
+                         AstRegion *, const char *, ... )__attribute__((format(printf,6,7)));
+#endif
+
+#if defined(astCLASS)            /* Protected */
+
+/* Initialiser. */
+AstCircle *astInitCircle_( void *, size_t, int, AstCircleVtab *,
+                           const char *, AstFrame *, int, const double[],
+                           const double[], AstRegion *, int * );
+
+/* Vtab initialiser. */
+void astInitCircleVtab_( AstCircleVtab *, const char *, int * );
+
+/* Loader. */
+AstCircle *astLoadCircle_( void *, size_t, AstCircleVtab *,
+                           const char *, AstChannel *, int * );
+
+#endif
+
+/* Prototypes for member functions. */
+/* -------------------------------- */
+void astCirclePars_( AstCircle *, double *, double *, double *, int * );
+
+# if defined(astCLASS)           /* Protected */
+AstRegion *astBestCircle_( AstPointSet *, double *, AstRegion *, int * );
+#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 astCheckCircle(this) astINVOKE_CHECK(Circle,this,0)
+#define astVerifyCircle(this) astINVOKE_CHECK(Circle,this,1)
+
+/* Test class membership. */
+#define astIsACircle(this) astINVOKE_ISA(Circle,this)
+
+/* Constructor. */
+#if defined(astCLASS)            /* Protected. */
+#define astCircle astINVOKE(F,astCircle_)
+#else
+#define astCircle astINVOKE(F,astCircleId_)
+#endif
+
+#if defined(astCLASS)            /* Protected */
+
+/* Initialiser. */
+#define astInitCircle(mem,size,init,vtab,name,frame,form,p1,p2,unc) \
+astINVOKE(O,astInitCircle_(mem,size,init,vtab,name,frame,form,p1,p2,unc,STATUS_PTR))
+
+/* Vtab Initialiser. */
+#define astInitCircleVtab(vtab,name) astINVOKE(V,astInitCircleVtab_(vtab,name,STATUS_PTR))
+/* Loader. */
+#define astLoadCircle(mem,size,vtab,name,channel) \
+astINVOKE(O,astLoadCircle_(mem,size,vtab,name,astCheckChannel(channel),STATUS_PTR))
+#endif
+
+/* Interfaces to public member functions. */
+/* -------------------------------------- */
+/* Here we make use of astCheckCircle to validate Circle pointers
+   before use.  This provides a contextual error report if a pointer
+   to the wrong sort of Object is supplied. */
+
+#define astCirclePars(this,centre,radius,p1) \
+astINVOKE(V,astCirclePars_(astCheckCircle(this),centre,radius,p1,STATUS_PTR))
+
+#if defined(astCLASS)            /* Protected */
+#define astBestCircle(pset,cen,unc) astBestCircle_(pset,cen,unc,STATUS_PTR)
+#endif
+#endif
+
+
+
+
+