historical/toontown-classic.git/panda/include/linearRandomForce.I

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2024-01-16 11:20:27 -06:00
/**
* PANDA 3D SOFTWARE
* Copyright (c) Carnegie Mellon University. All rights reserved.
*
* All use of this software is subject to the terms of the revised BSD
* license. You should have received a copy of this license along
* with this source code in a file named "LICENSE."
*
* @file linearRandomForce.I
* @author charles
* @date 2000-06-19
*/
/**
* generates a random unit vector
*/
INLINE LVector3 LinearRandomForce::
random_unit_vector() {
PN_stdfloat z, r, theta;
z = 1.0 - (2.0 * bounded_rand());
r = csqrt(1.0 - (z * z));
theta = 2.0 * MathNumbers::pi * bounded_rand();
return LVector3(r * ccos(theta), r * csin(theta), z);
}