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) 1983-2001 Kevin Rosenberg
12 ** $Id: ctsupport.h,v 1.23 2001/01/28 19:10:18 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 #include "msvc_compat.h"
40 #define STR_MAX_LEN 255
41 #define STR_SIZE STR_MAX_LEN+1
51 #if defined(MSVC) || HAVE_SSTREAM
54 #include <sstream_subst>
61 /*----------------------------------------------------------------------*/
63 #define SHOW(var, fmt) { cerr << "var = " << var << endl; }
65 /*----------------------------------------------------------------------*/
72 /*----------------------------------------------------------------------*/
79 /*----------------------------------------------------------------------*/
82 /* codes for open command */
84 #define OPEN_RDONLY O_RDONLY /* other system use standard codes */
85 #define OPEN_WRONLY O_WRONLY /* for binary */
86 #define OPEN_RDWR O_RDWR
88 #define OPEN_RDONLY 0 /* other system use standard codes */
89 #define OPEN_WRONLY 1 /* for binary */
93 /*----------------------------------------------------------------------*/
95 #if !defined(O_BINARY) && !defined(MSVC)
100 #define S_IWRITE S_IWUSR
103 /*----------------------------------------------------------------------*/
105 #if defined(MSVC) || ! defined(SIZEOF_INT)
107 #define SIZEOF_LONG 4
108 #define SIZEOF_SHORT 2
109 #define SIZEOF_FLOAT 4
110 #define SIZEOF_DOUBLE 8
113 typedef signed char kint8;
114 typedef unsigned char kuint8;
118 typedef unsigned int kuint32;
119 #elif SIZEOF_LONG == 4
120 typedef long int kint32;
121 typedef unsigned int kuint32;
124 #if SIZEOF_SHORT == 2
125 typedef short int kint16;
126 typedef unsigned short int kuint16;
127 #elif SIZEOF_INT == 2
129 typedef unsigned int kuint16;
132 #if SIZEOF_FLOAT == 4
133 typedef float kfloat32;
135 #if SIZEOF_DOUBLE == 8
136 typedef double kfloat64;
141 fileBasename (const char* const filename)
143 const char* p = strrchr (filename, '/');
144 return (p ? p + 1 : filename);
149 char* str_skip_head(const char* str, const char* const charlist);
150 char* str_skip_head(const char* str, char* charlist);
151 char *str_lower(char *s);
152 char *str_wrm_tail(char *str);
153 char *str_rm_tail(char *str, const char* const charlist);
154 char *str_upper(char *str);
157 void sys_error(int severity, const char *msg, ...);
158 void sys_verror (std::string& strOutput, int severity, const char *msg, va_list arg);
159 void sys_error_level(int severity);
165 #define PI 3.14159265358979323846
166 #define HALFPI 1.57079632679489661923 /* PI divided by 2 */
167 #define QUARTPI 0.78539816339744830962 /* PI divided by 4 */
168 #define I_PI 0.31830988618379067154 /* Inverse of PI */
169 #define I_PID2 0.63661977236758134308 /* Inverse of PID2 */
171 #define TWOPI 6.28318530717958647692
172 #define SQRT2 1.414213562373095049
174 #define F_EPSILON 1.0E-6
175 #define D_EPSILON 1.0E-10
177 #define ASSUMEDZERO 1E-10
179 typedef double GRFMTX_2D[3][3];
180 typedef double GRFMTX_3D[4][4];
183 convertDegreesToRadians (double x)
184 { return (x * (PI/180.)); }
187 convertRadiansToDegrees (double x)
188 { return (x*(180./PI)); }
191 inline T nearest (double x)
192 { return (x > 0 ? static_cast<T>(x+0.5) : static_cast<T>(x-0.5)); }
194 inline bool isEven (int n)
195 { return (n % 2) == 0; }
197 inline bool isOdd (int n)
198 { return (n % 2) != 0; }
201 inline bool isEven (long n)
202 { return (n % 2) == 0; }
204 inline bool isOdd (long n)
205 { return (n % 2) != 0; }
208 inline int imax (int a, int b)
209 { return (a >= b ? a : b); }
211 inline double dmax (double a, double b)
212 { return (a >= b ? a : b); }
215 inline T clamp (T value, T lowerBounds, T upperBounds)
216 { return (value >= upperBounds ? upperBounds : (value <= lowerBounds ? lowerBounds : value )); }
219 inline T lineLength (T x1, T y1, T x2, T y2)
220 { return static_cast<T>( sqrt ((x2-x1)*(x2-x1) + (y2-y1)*(y2-y1)) ); }
223 inline void minmax_array (const T* array, const int n, T& min, T& max)
225 max = min = array[0];
227 for (int i = 1; i < n; i++)
230 else if (array[i] > max)
235 //////////////////////////////////////////////////////////////
236 // FUNTION DECLARATIONS
237 //////////////////////////////////////////////////////////////
240 bool clip_rect (double& x1, double& y1, double& x2, double& y2, const double rect[4]);
241 bool clip_segment (double& x1, double& y1, double& x2, double& y2, const double u, const double v);
242 bool clip_sector (double& x1, double& y1, double& x2, double& y2, const double u, const double v);
243 bool clip_circle (double& x1, double& y1, double& x2, double& y2, const double cx, const double cy, const double radius, double t1, double t2);
244 bool clip_triangle (double& x1, double& y1, double& x2, double& y2, const double u, const double v, const int clip_xaxis);
248 void indent_mtx2 (GRFMTX_2D m);
249 void xlat_mtx2 (GRFMTX_2D m, const double x, const double y);
250 void scale_mtx2 (GRFMTX_2D m, const double sx, const double sy);
251 void rot_mtx2 (GRFMTX_2D m, const double theta);
252 void mult_mtx2 (const GRFMTX_2D m1, const GRFMTX_2D m2, GRFMTX_2D result);
253 void xform_mtx2 (const GRFMTX_2D m, double& x, double& y);
254 void rotate2d (double x[], double y[], int pts, double angle);
255 void xlat2d (double x[], double y[], int pts, double xoffset, double yoffset);
256 void scale2d (double x[], double y[], int pts, double xfact, double yfact);
259 double normalizeAngle (double theta);
260 double integrateSimpson (const double xmin, const double xmax, const double *y, const int np);
261 void vectorNumericStatistics (std::vector<double> vec, const int nPoints, double& min, double& max, double& mean, double& mode, double& median, double& stddev);
264 /*----------------------------------------------------------------------*/
266 /* screen character codes */
275 void cio_tone(double freq, double length);
278 void cio_put_c(int c);
279 void cio_put_cc(int c, int count);
280 void cio_put_str(const char *str);
283 unsigned int cio_kb_getc(void);
284 void cio_kb_ungetc(unsigned int c);
285 char *cio_kb_gets(char *str, int maxlen);
286 unsigned int cio_kb_waitc(const char *astr, int beep);
292 #define KEY_RETURN 13
293 #define KEY_ESCAPE 27
305 #define BACKSLASH '\\'
324 #define AMPERSAND '&'
335 #endif /* #ifndef CTSUPPORT_H */