mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-13 21:31:53 +00:00
179 lines
3.5 KiB
C++
179 lines
3.5 KiB
C++
/* ScummVM - Graphic Adventure Engine
|
|
*
|
|
* ScummVM 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 3 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, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
|
|
#include "common/streamdebug.h"
|
|
#include "common/math.h"
|
|
|
|
#include "math/angle.h"
|
|
|
|
namespace Math {
|
|
|
|
Angle::Angle(float degrees) :
|
|
_degrees(degrees) {
|
|
}
|
|
|
|
Angle::Angle(const Angle &a) :
|
|
_degrees(a._degrees) {
|
|
}
|
|
|
|
Angle &Angle::normalize(float low) {
|
|
_degrees = getDegrees(low);
|
|
|
|
return *this;
|
|
}
|
|
|
|
Angle &Angle::clampDegrees(float mag) {
|
|
_degrees = getDegrees(-180.f);
|
|
if (_degrees >= mag)
|
|
setDegrees(mag);
|
|
if (_degrees <= -mag)
|
|
setDegrees(-mag);
|
|
|
|
return *this;
|
|
}
|
|
|
|
Angle &Angle::clampDegrees(float min, float max) {
|
|
_degrees = getDegrees(-180.f);
|
|
if (_degrees >= max)
|
|
setDegrees(max);
|
|
if (_degrees <= min)
|
|
setDegrees(min);
|
|
|
|
return *this;
|
|
}
|
|
|
|
void Angle::setDegrees(float degrees) {
|
|
_degrees = degrees;
|
|
}
|
|
|
|
void Angle::setRadians(float radians) {
|
|
_degrees = Common::rad2deg(radians);
|
|
}
|
|
|
|
float Angle::getDegrees() const {
|
|
return _degrees;
|
|
}
|
|
|
|
float Angle::getRadians() const {
|
|
return Common::deg2rad(getDegrees());
|
|
}
|
|
|
|
float Angle::getDegrees(float low) const {
|
|
float degrees = _degrees;
|
|
if (degrees >= low + 360.f) {
|
|
float x = floor((degrees - low) / 360.f);
|
|
degrees -= 360.f * x;
|
|
} else if (degrees < low) {
|
|
float x = floor((degrees - low) / 360.f);
|
|
degrees -= 360.f * x;
|
|
}
|
|
return degrees;
|
|
}
|
|
|
|
float Angle::getRadians(float low) const {
|
|
float d = getDegrees(low);
|
|
return Common::deg2rad(d);
|
|
}
|
|
|
|
float Angle::getCosine() const {
|
|
return cosf(getRadians());
|
|
}
|
|
|
|
float Angle::getSine() const {
|
|
return sinf(getRadians());
|
|
}
|
|
|
|
float Angle::getTangent() const {
|
|
return tanf(getRadians());
|
|
}
|
|
|
|
Angle &Angle::operator=(const Angle &a) {
|
|
_degrees = a._degrees;
|
|
|
|
return *this;
|
|
}
|
|
|
|
Angle &Angle::operator=(float degrees) {
|
|
setDegrees(degrees);
|
|
|
|
return *this;
|
|
}
|
|
|
|
Angle &Angle::operator+=(const Angle &a) {
|
|
setDegrees(_degrees + a._degrees);
|
|
|
|
return *this;
|
|
}
|
|
|
|
Angle &Angle::operator+=(float degrees) {
|
|
setDegrees(_degrees + degrees);
|
|
|
|
return *this;
|
|
}
|
|
|
|
Angle &Angle::operator-=(const Angle &a) {
|
|
setDegrees(_degrees - a._degrees);
|
|
|
|
return *this;
|
|
}
|
|
|
|
Angle &Angle::operator-=(float degrees) {
|
|
setDegrees(_degrees - degrees);
|
|
|
|
return *this;
|
|
}
|
|
|
|
Angle Angle::fromRadians(float radians) {
|
|
return Angle(Common::rad2deg(radians));
|
|
}
|
|
|
|
Angle Angle::arcCosine(float x) {
|
|
Angle a;
|
|
a.setRadians(acosf(x));
|
|
return a;
|
|
}
|
|
|
|
Angle Angle::arcSine(float x) {
|
|
Angle a;
|
|
a.setRadians(asinf(x));
|
|
return a;
|
|
}
|
|
|
|
Angle Angle::arcTangent(float x) {
|
|
Angle a;
|
|
a.setRadians(atanf(x));
|
|
return a;
|
|
}
|
|
|
|
Angle Angle::arcTangent2(float y, float x) {
|
|
Angle a;
|
|
a.setRadians(atan2f(y, x));
|
|
return a;
|
|
}
|
|
|
|
Common::StreamDebug &operator<<(Common::StreamDebug &dbg, const Math::Angle &a) {
|
|
dbg.nospace() << "Angle(" << a.getDegrees(-180) << ")";
|
|
|
|
return dbg.space();
|
|
}
|
|
|
|
}
|