** This is part of the CTSim program
** Copyright (C) 1983-2000 Kevin Rosenberg
**
-** $Id: kmath.h,v 1.12 2000/06/13 16:20:31 kevin Exp $
+** $Id: kmath.h,v 1.16 2000/06/19 15:48:23 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
#include <stdio.h>
#include <math.h>
-#include <algo.h>
#define PI 3.14159265358979323846
#define HALFPI 1.57079632679489661923 /* PI divided by 2 */
#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
typedef double GRFMTX_2D[3][3];
typedef double GRFMTX_3D[4][4];
+inline double
+convertDegreesToRadians (double x)
+{ return (x * (PI/180.)); }
+
+inline double
+convertRadiansToDegrees (double x)
+{ return (x*(180./PI)); }
template<class T>
inline T nearest (double x)
{ return (x > 0 ? static_cast<T>(x+0.5) : static_cast<T>(x-0.5)); }
template<class T>
-inline T clamp (T value, T upperBounds, T lowerBounds)
+inline T clamp (T value, T lowerBounds, T upperBounds)
{ return (value >= upperBounds ? upperBounds : (value <= lowerBounds ? lowerBounds : value )); }
+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)) ); }
+
+template<class T>
+inline void minmax_array (const T* array, const int n, T& min, T& max)
+{
+ max = min = array[0];
+
+ for (int i = 1; i < n; i++)
+ if (array[i] < min)
+ min = array[i];
+ else if (array[i] > max)
+ max = array[i];
+}
+
+
+//////////////////////////////////////////////////////////////
+// FUNTION DECLARATIONS
+//////////////////////////////////////////////////////////////
-/* 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);
+// 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);
-/* norm_ang.cpp */
-double norm_ang(double theta);
+// norm_ang.cpp
+double norm_ang (double theta);
-/* xform.cpp */
+// 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 rot_mtx2(GRFMTX_2D m, const double theta);
void mult_mtx2(GRFMTX_2D m1, GRFMTX_2D m2, GRFMTX_2D result);
-void xform_mtx2(GRFMTX_2D m, double *x, double *y);
+void xform_mtx2(GRFMTX_2D m, double& x, double& y);
void rotate2d(double x[], double y[], int pts, double angle);
void xlat2d(double x[], double y[], int pts, double xoffset, double yoffset);
void scale2d(double x[], double y[], int pts, double xfact, double yfact);
-/* simpson.cpp */
-double simpson(const double xmin, const double xmax, const double *y, const int np);
-
-/* minmax.cpp */
-void minmax_dvector(const double array[], const int pts, double *xmin, double *xmax);
-
+// simpson.cpp
+double integrateSimpson (const double xmin, const double xmax, const double *y, const int np);
#endif