2 This file is part of XRay, a photorealistic 3D rendering library.
3 Copyright (C) 2005 John Tsiombikas
5 XRay is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 XRay is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with XRay; if not, write to the Free Software
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 * @author John Tsiombikas
25 * Spherical coordinates.
32 * @param theta 0 <= theta <= 2pi, the angle around Y axis.
33 * @param phi 0 <= phi <= pi, the angle from Y axis.
36 SphVector::SphVector(scalar_t theta, scalar_t phi, scalar_t r) {
42 /** Constructs a spherical coordinate vector from a cartesian vector */
43 SphVector::SphVector(const Vector3 &cvec) {
47 /** Assignment operator that converts cartesian to spherical coords */
48 SphVector &SphVector::operator =(const Vector3 &cvec) {
50 //theta = atan2(cvec.y, cvec.x);
51 theta = atan2(cvec.z, cvec.x);
52 //phi = acos(cvec.z / r);
53 phi = acos(cvec.y / r);