1 /*****************************************************************************
4 ** File Name: ctsupport.h
5 ** Author: Kevin Rosenberg
6 ** Purpose: Header file for CT support library
7 ** Date Started: Dec. 83
9 ** This is part of the CTSim program
10 ** Copyright (C) 1983-2000 Kevin Rosenberg
12 ** $Id: ctsupport.h,v 1.6 2000/07/29 19:50:08 kevin Exp $
15 ** This program is free software; you can redistribute it and/or modify
16 ** it under the terms of the GNU General Public License (version 2) as
17 ** published by the Free Software Foundation.
19 ** This program is distributed in the hope that it will be useful,
20 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
21 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 ** GNU General Public License for more details.
24 ** You should have received a copy of the GNU General Public License
25 ** along with this program; if not, write to the Free Software
26 ** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
27 ******************************************************************************/
37 #define snprintf _snprintf
40 #define STR_MAX_LEN 255
41 #define STR_SIZE STR_MAX_LEN+1
55 /*----------------------------------------------------------------------*/
57 #define SHOW(var, fmt) { cerr << "var = " << var << endl; }
59 /*----------------------------------------------------------------------*/
66 /*----------------------------------------------------------------------*/
69 int hour, minute, second, ms;
73 int year, month, date, dow;
81 typedef struct time_st TIME;
82 typedef struct date_st DATE;
83 typedef struct timedate_st TIMEDATE;
85 /*----------------------------------------------------------------------*/
91 /*----------------------------------------------------------------------*/
94 /* codes for open command */
96 #define OPEN_RDONLY O_RDONLY /* other system use standard codes */
97 #define OPEN_WRONLY O_WRONLY /* for binary */
98 #define OPEN_RDWR O_RDWR
100 #define OPEN_RDONLY 0 /* other system use standard codes */
101 #define OPEN_WRONLY 1 /* for binary */
105 /*----------------------------------------------------------------------*/
112 #define S_IWRITE S_IWUSR
115 /*----------------------------------------------------------------------*/
117 #if defined(MICROSOFT) || ! defined(SIZEOF_INT)
119 #define SIZEOF_LONG 4
120 #define SIZEOF_SHORT 2
121 #define SIZEOF_FLOAT 4
122 #define SIZEOF_DOUBLE 8
125 typedef signed char kint8;
126 typedef unsigned char kuint8;
130 typedef unsigned int kuint32;
131 #elif SIZEOF_LONG == 4
132 typedef long int kint32;
133 typedef unsigned int kuint32;
136 #if SIZEOF_SHORT == 2
137 typedef short int kint16;
138 typedef unsigned short int kuint16;
139 #elif SIZEOF_INT == 2
141 typedef unsigned int kuint16;
144 #if SIZEOF_FLOAT == 4
145 typedef float kfloat32;
147 #if SIZEOF_DOUBLE == 8
148 typedef double kfloat64;
153 fileBasename (const char* const filename)
155 const char* p = strrchr (filename, '/');
156 return (p ? p + 1 : filename);
161 char* str_skip_head(const char* str, const char* const charlist);
162 char* str_skip_head(const char* str, char* charlist);
163 char *str_lower(char *s);
164 char *str_wrm_tail(char *str);
165 char *str_rm_tail(char *str, const char* const charlist);
166 char *str_upper(char *str);
169 void sys_error(int severity, const char *msg, ...);
170 void sys_verror(int severity, const char *msg, va_list arg);
171 void sys_error_level(int severity);
174 DATE *td_get_date(DATE *d);
175 TIME *td_get_time(TIME *t);
176 double td_current_sec(void);
177 double td_time_to_sec(TIME *t);
178 TIME *td_time_sub(const TIME *t1, const TIME *t2, TIME *tdiff);
179 TIME *td_time_add(const TIME *t1, const TIME *t2, TIME *tsum);
180 TIME *td_time_copy(TIME *to, const TIME *from);
181 TIME *td_time_norm(TIME *t);
182 void td_get_tmdt(TIMEDATE *td);
183 const char *td_str_tmdt(const TIMEDATE *td);
184 const char *td_str_time(const TIME *t);
185 const char *td_str_stime(const TIME *t);
186 const char *td_str_date(const DATE *d);
187 char *td_str_cdate(DATE *d);
188 char *td_month_name(int n);
189 char *td_day_name(int n);
196 #define PI 3.14159265358979323846
197 #define HALFPI 1.57079632679489661923 /* PI divided by 2 */
198 #define QUARTPI 0.78539816339744830962 /* PI divided by 4 */
199 #define I_PI 0.31830988618379067154 /* Inverse of PI */
200 #define I_PID2 0.63661977236758134308 /* Inverse of PID2 */
202 #define TWOPI 6.28318530717958647692
203 #define SQRT2 1.414213562373095049
205 #define F_EPSILON 1.0E-6
206 #define D_EPSILON 1.0E-10
208 #define ASSUMEDZERO 1E-10
210 typedef double GRFMTX_2D[3][3];
211 typedef double GRFMTX_3D[4][4];
214 convertDegreesToRadians (double x)
215 { return (x * (PI/180.)); }
218 convertRadiansToDegrees (double x)
219 { return (x*(180./PI)); }
222 inline T nearest (double x)
223 { return (x > 0 ? static_cast<T>(x+0.5) : static_cast<T>(x-0.5)); }
226 inline T clamp (T value, T lowerBounds, T upperBounds)
227 { return (value >= upperBounds ? upperBounds : (value <= lowerBounds ? lowerBounds : value )); }
230 inline T lineLength (T x1, T y1, T x2, T y2)
231 { return static_cast<T>( sqrt ((x2-x1)*(x2-x1) + (y2-y1)*(y2-y1)) ); }
234 inline void minmax_array (const T* array, const int n, T& min, T& max)
236 max = min = array[0];
238 for (int i = 1; i < n; i++)
241 else if (array[i] > max)
246 //////////////////////////////////////////////////////////////
247 // FUNTION DECLARATIONS
248 //////////////////////////////////////////////////////////////
251 int clip_rect (double& x1, double& y1, double& x2, double& y2, const double rect[4]);
252 int clip_segment (double& x1, double& y1, double& x2, double& y2, const double u, const double v);
253 int clip_sector (double& x1, double& y1, double& x2, double& y2, const double u, const double v);
254 int clip_circle (double& x1, double& y1, double& x2, double& y2, const double cx, const double cy, const double radius, double t1, double t2);
255 int clip_triangle (double& x1, double& y1, double& x2, double& y2, const double u, const double v, const int clip_xaxis);
259 void indent_mtx2 (GRFMTX_2D m);
260 void xlat_mtx2 (GRFMTX_2D m, const double x, const double y);
261 void scale_mtx2 (GRFMTX_2D m, const double sx, const double sy);
262 void rot_mtx2 (GRFMTX_2D m, const double theta);
263 void mult_mtx2 (const GRFMTX_2D m1, const GRFMTX_2D m2, GRFMTX_2D result);
264 void xform_mtx2 (const GRFMTX_2D m, double& x, double& y);
265 void rotate2d (double x[], double y[], int pts, double angle);
266 void xlat2d (double x[], double y[], int pts, double xoffset, double yoffset);
267 void scale2d (double x[], double y[], int pts, double xfact, double yfact);
270 double normalizeAngle (double theta);
271 double integrateSimpson (const double xmin, const double xmax, const double *y, const int np);
274 /*----------------------------------------------------------------------*/
276 /* screen character codes */
285 void cio_tone(double freq, double length);
288 void cio_put_c(int c);
289 void cio_put_cc(int c, int count);
290 void cio_put_str(const char *str);
293 unsigned int cio_kb_getc(void);
294 void cio_kb_ungetc(unsigned int c);
295 char *cio_kb_gets(char *str, int maxlen);
296 unsigned int cio_kb_waitc(const char *astr, int beep);
302 #define KEY_RETURN 13
303 #define KEY_ESCAPE 27
315 #define BACKSLASH '\\'
334 #define AMPERSAND '&'
345 #endif /* #ifndef ASCII_H */