annotate libs/vmath/sphvec.cc @ 27:3d082c566b53
fixed all the bugs, pc version works
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John Tsiombikas <nuclear@member.fsf.org> |
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Thu, 18 Jun 2015 04:32:25 +0300 |
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1 /*
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2 libvmath - a vector math library
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3 Copyright (C) 2004-2015 John Tsiombikas <nuclear@member.fsf.org>
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4
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5 This program is free software: you can redistribute it and/or modify
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6 it under the terms of the GNU Lesser General Public License as published
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7 by the Free Software Foundation, either version 3 of the License, or
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8 (at your option) any later version.
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9
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10 This program is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 GNU Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public License
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16 along with this program. If not, see <http://www.gnu.org/licenses/>.
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17 */
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18 #include "sphvec.h"
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19 #include "vector.h"
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20
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21 /* theta: 0 <= theta <= 2pi, the angle around Y axis.
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22 * phi: 0 <= phi <= pi, the angle from Y axis.
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23 * r: radius.
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24 */
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25 SphVector::SphVector(scalar_t theta, scalar_t phi, scalar_t r) {
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26 this->theta = theta;
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27 this->phi = phi;
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28 this->r = r;
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29 }
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30
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31 /* Constructs a spherical coordinate vector from a cartesian vector */
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32 SphVector::SphVector(const Vector3 &cvec) {
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33 *this = cvec;
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34 }
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35
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36 /* Assignment operator that converts cartesian to spherical coords */
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37 SphVector &SphVector::operator =(const Vector3 &cvec) {
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38 r = cvec.length();
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39 //theta = atan2(cvec.y, cvec.x);
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40 theta = atan2(cvec.z, cvec.x);
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41 //phi = acos(cvec.z / r);
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42 phi = acos(cvec.y / r);
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43 return *this;
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44 }
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