/*****************************************************************************
-** This is part of the CTSim program
-** Copyright (C) 1983-2000 Kevin Rosenberg
-**
-** $Id: kmath.h,v 1.9 2000/05/08 20:00:48 kevin Exp $
-** $Log: kmath.h,v $
-** Revision 1.9 2000/05/08 20:00:48 kevin
-** ANSI C changes
-**
-** Revision 1.8 2000/05/07 12:46:19 kevin
-** made c++ compatible
-**
-** Revision 1.7 2000/05/04 18:16:34 kevin
-** renamed filter definitions
-**
-** Revision 1.6 2000/05/02 20:00:25 kevin
-** *** empty log message ***
-**
-** Revision 1.5 2000/05/02 15:31:39 kevin
-** code cleaning
+** FILE IDENTIFICATION
**
-** Revision 1.4 2000/04/30 19:17:35 kevin
-** Set up include files for conditional INTERACTIVE_GRAPHICS
+** Name: kmath.h
+** Purpose: Header file containing definitions for numerical app
+** Programmer: Kevin Rosenberg
+** Date Started: Nov 84
**
-** Revision 1.3 2000/04/28 14:14:16 kevin
-** *** empty log message ***
+** This is part of the CTSim program
+** Copyright (C) 1983-2000 Kevin Rosenberg
**
+** $Id: kmath.h,v 1.15 2000/06/18 10:27:11 kevin Exp $
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License (version 2) as
** along with this program; if not, write to the Free Software
** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
******************************************************************************/
-/******************************************************************************
- *
- * PURPOSE
- * Header file containing definitions for numerical app's
- * Date Started: Nov 84
- *
- *****************************************************************************/
#ifndef _H_kmath
#define _H_kmath
#include <stdio.h>
#include <math.h>
-#ifdef __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-
#define PI 3.14159265358979323846
#define HALFPI 1.57079632679489661923 /* PI divided by 2 */
#define QUARTPI 0.78539816339744830962 /* PI divided by 4 */
#define F_EPSILON 1.0E-6
#define D_EPSILON 1.0E-10
-#define DEG_TO_RAD(x) (x*(PI/180.))
-#define RAD_TO_DEG(x) (x*(180./PI))
-
-
#define ASSUMEDZERO 1E-10
-/* codes for C data types */
+typedef double GRFMTX_2D[3][3];
+typedef double GRFMTX_3D[4][4];
+
+inline double
+convertDegreesToRadians (double x)
+{ return (x * (PI/180.)); }
-#define DT_CHAR 1
-#define DT_INT 2
-#define DT_LONG 3
-#define DT_FLOAT 4
-#define DT_DOUBLE 5
-#define DT_STRING 6
+inline double
+convertRadiansToDegrees (double x)
+{ return (x*(180./PI)); }
-typedef char *CMTX_1D;
-typedef CMTX_1D *CMTX_2D;
-typedef CMTX_2D *CMTX_3D;
+template<class T>
+inline T nearest (double x)
+{ return (x > 0 ? static_cast<T>(x+0.5) : static_cast<T>(x-0.5)); }
-typedef int *IMTX_1D;
-typedef IMTX_1D *IMTX_2D;
-typedef IMTX_2D *IMTX_3D;
+template<class T>
+inline T clamp (T value, T lowerBounds, T upperBounds)
+{ return (value >= upperBounds ? upperBounds : (value <= lowerBounds ? lowerBounds : value )); }
-typedef float *FMTX_1D;
-typedef FMTX_1D *FMTX_2D;
-typedef FMTX_2D *FMTX_3D;
+template<class T>
+inline T lineLength (T x1, T y1, T x2, T y2)
+{ return static_cast<T>( sqrt ((x2-x1)*(x2-x1) + (y2-y1)*(y2-y1)) ); }
-typedef double *DMTX_1D;
-typedef DMTX_1D *DMTX_2D;
-typedef DMTX_2D *DMTX_3D;
+template<class T>
+inline void minmax_array (const T* array, const int n, T& min, T& max)
+{
+ max = min = array[0];
-typedef double GRFMTX_2D[3][3];
-typedef double GRFMTX_3D[4][4];
+ for (int i = 1; i < n; i++)
+ if (array[i] < min)
+ min = array[i];
+ else if (array[i] > max)
+ max = array[i];
+}
-union elem_val_un { /* holds an element value */
- char c;
- int i;
- long int l;
- float f;
- double d;
-};
-
-typedef union elem_val_un MTX_ELEM_VAL;
-
-
-union elem_ptr_un { /* holds a pointer to a 1D vector of any type */
- char *c;
- int *i;
- long int *l;
- float *f;
- double *d;
-};
-
-typedef union elem_ptr_un MTX_1D;
-typedef MTX_1D *MTX_2D;
-typedef MTX_2D *MTX_3D;
-
-union mtx_val_ptr_un { /* pointer to matrix values */
- MTX_1D m1;
- MTX_2D m2;
- MTX_3D m3;
-};
-
-typedef union mtx_val_ptr_un MTX_PTR;
-
-struct matrix_st {
- unsigned int order; /* order, or dimension, of matrix */
- unsigned int elemtype; /* element type */
- unsigned int elemsize; /* size of element in bytes */
- unsigned int nx, ny, nz; /* size of matrix in each dimension */
- MTX_PTR val; /* pointer to matrix values */
-};
-
-typedef struct matrix_st MTX;
-typedef struct matrix_st *MTXP;
-
-/* DEFINITION IDENTIFICATION
- *
- * Definitions to access a matrix element from an matrix
- *
-
-#define me1(mtx,x)\
- (mtx->elemtype == DT_FLOAT ? mtx->val.m1.f[x] :\
- (mtx->elemtype == DT_DOUBLE ? mtx->val.m1.d[x] :\
- (mtx->elemtype == DT_INT ? mtx->val.m1.i[x] :\
- (mtx->elemtype == DT_LONG ? mtx->val.m1.l[x] :\
- (mtx->elemtype == DT_CHAR ? mtx->val.m1.c[x] :\
- 0\
- )))))
-
-#define me2(mtx,x,y)\
- (mtx->elemtype == DT_FLOAT ? mtx->val.m2[x].f[y] :\
- (mtx->elemtype == DT_DOUBLE ? mtx->val.m2[x].d[y] :\
- (mtx->elemtype == DT_INT ? mtx->val.m2[x].i[y] :\
- (mtx->elemtype == DT_LONG ? mtx->val.m2[x].l[y] :\
- (mtx->elemtype == DT_CHAR ? mtx->val.m2[x].c[y] :\
- 0\
- )))))
-
-
-#define me3(mtx,x,y,z)\
- (mtx->elemtype == DT_FLOAT ? mtx->val.m3[x][y].f[z] :\
- (mtx->elemtype == DT_DOUBLE ? mtx->val.m3[x][y].d[z] :\
- (mtx->elemtype == DT_INT ? mtx->val.m3[x][y].i[z] :\
- (mtx->elemtype == DT_LONG ? mtx->val.m3[x][y].l[z] :\
- (mtx->elemtype == DT_CHAR ? mtx->val.m3[x][y].c[z] :\
- 0\
- )))))
-*/
-
-/* clip.c */
+/* clip.cpp */
int clip_rect(double *x1, double *y1, double *x2, double *y2, const double rect[4]);
int clip_segment(double *x1, double *y1, double *x2, double *y2, const double u, const double v);
int clip_sector(double *x1, double *y1, double *x2, double *y2, const double u, const double v);
int clip_circle(double *x1, double *y1, double *x2, double *y2, const double cx, const double cy, const double radius, double t1, double t2);
int clip_triangle(double *x1, double *y1, double *x2, double *y2, const double u, const double v, const int clip_xaxis);
-/* lnearest.c */
-long int lnearest(double x);
-
-/* minmax.c */
-double fmax(const double a, const double b);
-void minmax_dvector(const double array[], const int pts, double *xmin, double *xmax);
-
-/* mtx_disp.c */
-void mtx_show(const MTX *mtx);
-void mtx_prt(const MTX *mtx, FILE *fp);
-int mtx_prt_elem(const MTX *mtx, FILE *fp, unsigned int x, unsigned int y, unsigned int z);
-
-/* mtx_elem.c */
-int mtx_get_elem(const MTX *mtx, MTX_ELEM_VAL *me, const int x, const int y, const int z);
-int mtx_put_elem(MTX *mtx, const MTX_ELEM_VAL *me, unsigned int x, unsigned int y, unsigned int z);
-
-/* mtx_inp.c */
-int mtx_inp_elem(const char *prompt, MTX_ELEM_VAL *mev, const int dtype);
-
-/* mtx_main.c */
-MTX *mtx_init(const unsigned int order, const unsigned int elem_type, const unsigned int nx, const unsigned int ny, const unsigned int nz);
-MTX *mtx_clr(MTX *mtx);
-int mtx_free(MTX *mtx);
-int mtx_elem_size(const int dt);
-int mtx_check(const MTX *mtx, const char *func_name);
-
-/* norm_ang.c */
+/* norm_ang.cpp */
double norm_ang(double theta);
-/* simpson.c */
-double simpson(const double xmin, const double xmax, const double *y, const int np);
-
-/* xform.c */
+/* xform.cpp */
void indent_mtx2(GRFMTX_2D m);
void xlat_mtx2(GRFMTX_2D m, const double x, const double y);
void scale_mtx2(GRFMTX_2D m, const double sx, const double sy);
void xlat2d(double x[], double y[], int pts, double xoffset, double yoffset);
void scale2d(double x[], double y[], int pts, double xfact, double yfact);
-#ifdef __cplusplus
-}
-#endif /* __cplusplus */
+/* simpson.cpp */
+double simpson(const double xmin, const double xmax, const double *y, const int np);
#endif
projects / ctsim.git / blobdiff