1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
/*****
* angle.h
* Andy Hammerlindl 2004/04/29
*
* For degree to radian conversion and visa versa.
*****/
#ifndef ANGLE_H
#define ANGLE_H
#include <cmath>
#include "camperror.h"
namespace camp {
const double PI=acos(-1.0);
const double Cpiby180=PI/180.0;
const double C180bypi=180.0/PI;
inline double radians(double theta)
{
return theta*Cpiby180;
}
inline double degrees(double theta)
{
return theta*C180bypi;
}
// Wrapper for atan2 with sensible (lexical) argument order and (0,0) check
inline double angle(double x, double y, bool warn=true)
{
if(x == 0.0 && y == 0.0) {
if(warn)
reportError("taking angle of (0,0)");
else
return 0;
}
return atan2(y,x);
}
// Return an angle in the interval [0,360).
inline double principalBranch(double deg)
{
deg=fmod(deg,360.0);
if(deg < 0) deg += 360.0;
return deg;
}
} //namespace camp
#endif
|
