/usr/include/osgEarth/Random is in libosgearth-dev 2.4.0+dfsg-6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/* osgEarth - Dynamic map generation toolkit for OpenSceneGraph
* Copyright 2008-2013 Pelican Mapping
* http://osgearth.org
*
* osgEarth is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>
*/
#ifndef OSGEARTH_RANDOM_H
#define OSGEARTH_RANDOM_H 1
#include <osgEarth/Common>
namespace osgEarth
{
/**
* Psuedo random number generator. Results are guaranteed to be consistent across
* machines given the same seed value.
*/
class OSGEARTH_EXPORT Random
{
public:
enum Method
{
METHOD_FAST // not great, but super-fast and cheap.
};
public:
/**
* Constructs a new random number generator. It is seeded with
* the system clock.
* @param method RNG method to use
*/
Random( Method method =METHOD_FAST );
/**
* Constucts a new random number generator with a user-specified seed.
* The results are guaranteed to be globally consistent.
* @param seed RNG seed value
* @param method RNG method to use
*/
Random( unsigned seed, Method method =METHOD_FAST );
/**
* Copy constructor.
*/
Random( const Random& rhs );
/** dtor */
virtual ~Random() { }
/**
* Resets the PRNG to its initial state (initial seed).
*/
void reset();
/**
* Gets the next random number as an unsigned int.
* @param mod Modulus value. The result will fall within the range [0..mod)
*/
unsigned next( unsigned mod );
/**
* Gets the next random number as a double in the range [0..1].
*/
double next();
private:
Method _method;
unsigned _seed;
unsigned _next;
};
}
#endif // OSGEARTH_RANDOM_H
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