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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 "common/algorithm.h"
#include "common/textconsole.h"
namespace Titanic {
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::multiply(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);
}
void FVector::fn3() {
double hyp = sqrt(_x * _x + _y * _y + _z * _z);
assert(hyp);
_x *= 1.0 / hyp;
_y *= 1.0 / hyp;
_z *= 1.0 / hyp;
}
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);
}
void FVector::fn4(FVector *dest, const FVector *v1, const FVector *v2) {
FVector tempVector(v1->_x + v2->_x, v1->_y + v2->_y, v1->_z + v2->_z);
tempVector.fn3();
*dest = tempVector;
}
void FVector::fn5(FVector *dest, const void *v) const {
error("TODO: FVector::fn5");
}
} // End of namespace Titanic
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