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/*****
* 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)
{
if(x == 0.0 && y == 0.0)
reportError("taking angle of (0,0)");
return atan2(y,x);
}
// Return an angle in the interval [0,360).
inline double principalBranch(double deg)
{
if(deg < 0) deg += 360;
return deg;
}
} //namespace camp
#endif
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