TerrainRandom.h

Go to the documentation of this file.

#ifndef VRECKO_NATURE_TERRAIN_TERRAINRANDOM_H
#define VRECKO_NATURE_TERRAIN_TERRAINRANDOM_H

#include <osg/Vec3>
#include <iostream>
#include <string>

#include "Properties/TerrainProperties.h"

namespace APNature
{
    class TerrainRandom
    {
    public:

        static inline float GetRandomFloatUniform(float from, float to) { return from > to ? TerrainRandom::GetRandomFloatUniform(to, from) : 
            from + (((rand() % RAND_MAX) * (to - from)) / RAND_MAX); }

        static float GetRandomFloatGaussian(float mean, float standardDeviation);

        static float GetRandomFloatGaussianBasedOnPointDistance(int x1, int y1, int x2, int y2);

        /*static inline float GetModifiedVariance(unsigned int iteration, float variance, float hurstExponent)
        {
            return (1.0f * variance / pow(2.0f, 2 * hurstExponent * (iteration + 1)));
        }*/

    private:

        static float _PreGeneratedGaussian;
        static bool _PreGeneratedGaussianExists;
    };
}

#endif