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/*
* Smithsonian Astrophysical Observatory, Cambridge, MA, USA
* This code has been modified under the terms listed below and is made
* available under the same terms.
*/
/*
* Copyright 1993-2004 George A Howlett.
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
* KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
* WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
* PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
* OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef _BLT_VECTOR_H
#define _BLT_VECTOR_H
#include <tcl.h>
typedef enum {
BLT_VECTOR_NOTIFY_UPDATE = 1, /* The vector's values has been updated */
BLT_VECTOR_NOTIFY_DESTROY /* The vector has been destroyed and the client
* should no longer use its data (calling
* Blt_FreeVectorId) */
} Blt_VectorNotify;
typedef struct _Blt_VectorId *Blt_VectorId;
typedef void (Blt_VectorChangedProc)(Tcl_Interp* interp, ClientData clientData,
Blt_VectorNotify notify);
typedef struct {
double *valueArr; /* Array of values (possibly malloc-ed) */
int numValues; /* Number of values in the array */
int arraySize; /* Size of the allocated space */
double min, max; /* Minimum and maximum values in the vector */
int dirty; /* Indicates if the vector has been updated */
int reserved; /* Reserved for future use */
} Blt_Vector;
typedef double (Blt_VectorIndexProc)(Blt_Vector * vecPtr);
typedef enum {
BLT_MATH_FUNC_SCALAR = 1, /* The function returns a single double
* precision value. */
BLT_MATH_FUNC_VECTOR /* The function processes the entire vector. */
} Blt_MathFuncType;
/*
* To be safe, use the macros below, rather than the fields of the
* structure directly.
*
* The Blt_Vector is basically an opaque type. But it's also the
* actual memory address of the vector itself. I wanted to make the
* API as unobtrusive as possible. So instead of giving you a copy of
* the vector, providing various functions to access and update the
* vector, you get your hands on the actual memory (array of doubles)
* shared by all the vector's clients.
*
* The trade-off for speed and convenience is safety. You can easily
* break things by writing into the vector when other clients are
* using it. Use Blt_ResetVector to get around this. At least the
* macros are a reminder it isn't really safe to reset the data
* fields, except by the API routines.
*/
#define Blt_VecData(v) ((v)->valueArr)
#define Blt_VecLength(v) ((v)->numValues)
#define Blt_VecSize(v) ((v)->arraySize)
#define Blt_VecDirty(v) ((v)->dirty)
extern double Blt_VecMin(Blt_Vector *vPtr);
extern double Blt_VecMax(Blt_Vector *vPtr);
extern Blt_VectorId Blt_AllocVectorId(Tcl_Interp* interp,
const char *vecName);
extern void Blt_SetVectorChangedProc(Blt_VectorId clientId,
Blt_VectorChangedProc *proc, ClientData clientData);
extern void Blt_FreeVectorId(Blt_VectorId clientId);
extern int Blt_GetVectorById(Tcl_Interp* interp, Blt_VectorId clientId,
Blt_Vector **vecPtrPtr);
extern const char *Blt_NameOfVectorId(Blt_VectorId clientId);
extern const char *Blt_NameOfVector(Blt_Vector *vecPtr);
extern int Blt_VectorNotifyPending(Blt_VectorId clientId);
extern int Blt_CreateVector(Tcl_Interp* interp, const char *vecName,
int size, Blt_Vector ** vecPtrPtr);
extern int Blt_CreateVector2(Tcl_Interp* interp, const char *vecName,
const char *cmdName, const char *varName, int initialSize,
Blt_Vector **vecPtrPtr);
extern int Blt_GetVector(Tcl_Interp* interp, const char *vecName,
Blt_Vector **vecPtrPtr);
extern int Blt_GetVectorFromObj(Tcl_Interp* interp, Tcl_Obj *objPtr,
Blt_Vector **vecPtrPtr);
extern int Blt_VectorExists(Tcl_Interp* interp, const char *vecName);
extern int Blt_ResetVector(Blt_Vector *vecPtr, double *dataArr, int n,
int arraySize, Tcl_FreeProc *freeProc);
extern int Blt_ResizeVector(Blt_Vector *vecPtr, int n);
extern int Blt_DeleteVectorByName(Tcl_Interp* interp, const char *vecName);
extern int Blt_DeleteVector(Blt_Vector *vecPtr);
extern int Blt_ExprVector(Tcl_Interp* interp, char *expr,
Blt_Vector *vecPtr);
extern void Blt_InstallIndexProc(Tcl_Interp* interp, const char *indexName,
Blt_VectorIndexProc * procPtr);
extern int Blt_VectorExists2(Tcl_Interp* interp, const char *vecName);
#endif /* _BLT_VECTOR_H */
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