/* * *   Copyright (c) 2001, Carlos E. Vidales. All rights reserved. * *   This sample program was written and put in the public domain  *    by Carlos E. Vidales.  The program is provided "as is"  *    without warranty of any kind, either expressed or implied. *   If you choose to use the program within your own products *    you do so at your own risk, and assume the responsibility *    for servicing, repairing or correcting the program should *    it prove defective in any manner. *   You may copy and distribute the program's source code in any  *    medium, provided that you also include in each copy an *    appropriate copyright notice and disclaimer of warranty. *   You may also modify this program and distribute copies of *    it provided that you include prominent notices stating  *    that you changed the file(s) and the date of any change, *    and that you do not charge any royalties or licenses for  *    its use. *  * *   File Name:  calibrate.h * * *   Definition of constants and structures, and declaration of functions  *    in Calibrate.c * */#ifndef _CALIBRATE_H_#define _CALIBRATE_H_/****************************************************//*                                                  *//* Included files                                   *//*                                                  *//****************************************************/#include <math.h>/****************************************************//*                                                  *//* Definitions                                      *//*                                                  *//****************************************************/#ifndef		_CALIBRATE_C_	#define		EXTERN         extern#else	#define		EXTERN#endif#ifndef		OK	#define		OK		        0	#define		NOT_OK		   -1#endif#define			INT32				long/****************************************************//*                                                  *//* Structures                                       *//*                                                  *//****************************************************/typedef struct Point {                        INT32    x,                                 y ;                     } POINT ;typedef struct Matrix {							/* This arrangement of values facilitates 							 *  calculations within getDisplayPoint() 							 */                        INT32    An,     /* A = An/Divider */                                 Bn,     /* B = Bn/Divider */                                 Cn,     /* C = Cn/Divider */                                 Dn,     /* D = Dn/Divider */                                 En,     /* E = En/Divider */                                 Fn,     /* F = Fn/Divider */                                 Divider ;                     } MATRIX ;/****************************************************//*                                                  *//* Function declarations                            *//*                                                  *//****************************************************/EXTERN int setCalibrationMatrix( POINT * display,                                 POINT * screen,                                 MATRIX * matrix) ;EXTERN int getDisplayPoint( POINT * display,                            POINT * screen,                            MATRIX * matrix ) ;#endif  /* _CALIBRATE_H_ */