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