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/* 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 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.
*
*/
#include "titanic/star_control/fvector.h"
#include "titanic/star_control/dvector.h"
#include "titanic/star_control/star_control_sub6.h"
#include "common/algorithm.h"
#include "common/textconsole.h"
namespace Titanic {
FVector::FVector(const DVector &src) : _x(src._x), _y(src._y), _z(src._z) {
}
void FVector::fn1(FVector *v) {
v->_x = (ABS(_x - _y) < 0.00001 && ABS(_y - _z) < 0.00001 &&
ABS(_x - _z) < 0.00001) ? -_x : _x;
v->_y = _y;
v->_z = _z;
}
void FVector::crossProduct(FVector &dest, const FVector &src) {
dest._x = (src._z * _y) - (_z * src._y);
dest._y = (src._x * _z) - (_x * src._z);
dest._z = (src._y * _x) - (_y * src._x);
}
double FVector::normalize() {
double hyp = sqrt(_x * _x + _y * _y + _z * _z);
assert(hyp);
_x *= 1.0 / hyp;
_y *= 1.0 / hyp;
_z *= 1.0 / hyp;
return hyp;
}
const FVector *FVector::addAndNormalize(FVector &dest, const FVector &v1, const FVector &v2) {
FVector tempVector(v1._x + v2._x, v1._y + v2._y, v1._z + v2._z);
tempVector.normalize();
dest = tempVector;
return &dest;
}
double FVector::getDistance(const FVector &src) const {
double xd = src._x - _x;
double yd = src._y - _y;
double zd = src._z - _z;
return sqrt(xd * xd + yd * yd + zd * zd);
}
FVector FVector::fn5(const CStarControlSub6 *sub6) const {
FVector v;
v._x = sub6->_row2._x * _y + sub6->_row3._x * _z + sub6->_row1._x * _x + sub6->_vector._x;
v._y = sub6->_row2._y * _y + sub6->_row3._y * _z + sub6->_row1._y * _x + sub6->_vector._y;
v._z = sub6->_row3._z * _z + sub6->_row2._z * _y + sub6->_row1._z * _x + sub6->_vector._z;
return v;
}
} // End of namespace Titanic
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