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/* ResidualVM - A 3D game interpreter
*
* ResidualVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#ifndef MATH_ANGLE_H
#define MATH_ANGLE_H
#include "common/scummsys.h"
namespace Common {
class Debug;
}
namespace Math {
class Angle {
public:
/**
* Construct an angle object.
*
* \param degrees The angle, in degrees. Default is 0.
*/
Angle(float degrees = 0);
/**
* Construct and angle object, copying an already existing one.
*
* \param a The angle to copy.
*/
Angle(const Angle &a);
/**
* Normalize the angle in a [x; x + 360] range and return the object.
*
* \param low The lower bound of the range, in degrees.
*/
Angle &normalize(float low);
/**
* Clamp the angle to range [-mag, mag]
*
* \param mag The maximum distance from 0, in degrees.
*/
Angle &clampDegrees(float mag);
/**
* Clamp the angle to range [-min, max]
*
* \param min The lower bound of the range, in degrees.
* \param max The upper bound of the range, in degrees.
*/
Angle &clampDegrees(float min, float max);
void setDegrees(float degrees);
void setRadians(float radians);
float getDegrees() const;
float getRadians() const;
/**
* Returns the degrees of the angle, in the defined range.
*
* \param low The lower bound of the range, in degrees.
*/
float getDegrees(float low) const;
/**
* Returns the radianss of the angle, in the defined range.
*
* \param low The lower bound of the range, in degrees.
*/
float getRadians(float low) const;
float getCosine() const;
float getSine() const;
float getTangent() const;
Angle &operator=(const Angle &a);
Angle &operator=(float degrees);
Angle &operator+=(const Angle &a);
Angle &operator+=(float degrees);
Angle &operator-=(const Angle &a);
Angle &operator-=(float degrees);
/**
* Build an angle object.
*
* \param radians The angle, in radians.
*/
static Angle fromRadians(float radians);
static Angle arcCosine(float x);
static Angle arcSine(float x);
static Angle arcTangent(float x);
static Angle arcTangent2(float y, float x);
private:
float _degrees;
};
inline Angle operator-(const Angle &a) {
return Angle(-a.getDegrees());
}
inline Angle operator+(const Angle &a1, const Angle &a2) {
return Angle(a1.getDegrees() + a2.getDegrees());
}
inline Angle operator-(const Angle &a1, const Angle &a2) {
return Angle(a1.getDegrees() - a2.getDegrees());
}
inline Angle operator*(const Angle &a1, float f) {
return Angle(a1.getDegrees() * f);
}
inline Angle operator*(float f, const Angle &a2) {
return Angle(a2.getDegrees() * f);
}
inline Angle operator/(const Angle &a1, float f) {
return Angle(a1.getDegrees() / f);
}
inline Angle operator/(float f, const Angle &a2) {
return Angle(a2.getDegrees() / f);
}
inline bool operator==(const Angle &a1, const Angle &a2) {
return fabsf(a1.getDegrees() - a2.getDegrees()) < 0.001;
}
inline bool operator!=(const Angle &a1, const Angle &a2) {
return !(a1 == a2);
}
inline bool operator<(const Angle &a1, const Angle &a2) {
return a1.getDegrees() < a2.getDegrees();
}
inline bool operator>(const Angle &a1, const Angle &a2) {
return a1.getDegrees() > a2.getDegrees();
}
Common::Debug &operator<<(Common::Debug &dbg, const Math::Angle &a);
}
#endif
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