randomizer.h

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#ifndef RANDOMIZER_H_
#define RANDOMIZER_H_

#include <vector>
#include <cstdlib>
#include <ctime>
#include "configuration.h"

using namespace boost::program_options;

namespace AP_LSystem {
class Randomizer
{
public:
    static void init()
    {
        const variable_value * seed = Configuration::get()->getProperty( "RandomSeed" );
        if( seed )
        {
            srand( seed->as<unsigned int>() );
        }
        else
        {
            srand( time( NULL ) );
        }
    }

    static double get( unsigned int maxPercents )
    {
        return 1 + (((rand()%2)?(-1):(1)) * (static_cast<double>(rand() % (maxPercents*10)) / 1000.0f));
    }

    static double get( const double * max )
    {
        return get( static_cast<unsigned>(abs(*max)) );
    }
};
}

#endif