MidpointDisplacementProperties.h

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#ifndef VRECKO_NATURE_TERRAIN_MIDPOINTDISPLACEMENTPROPERTIES_H
#define VRECKO_NATURE_TERRAIN_MIDPOINTDISPLACEMENTPROPERTIES_H

#include <vrecko/ReaderWriter.h>
#include <osg/Vec2>

#include "GeneratedTerrainProperties.h"

namespace APNature
{
    static class MidpointDisplacementProperties : public GeneratedTerrainProperties
    {
    private:

        // Midpoint displacement
        static float _fractalDimension;
        static float _cornerValueFrom, _cornerValueTo;

    public:

        // Midpoint displacement specific methods
        // ######################################

        static inline float FractalDimension() { return _fractalDimension; }
        static inline void FractalDimension(float fractalDimension) { _fractalDimension = (fractalDimension > 3.0f ? 3.0f : 
            (fractalDimension < 2.0f ? 2.0f : fractalDimension) ); }

        static void CornerValueRange(float cornerValueFrom, float cornerValueTo);

        static inline float CornerValueFrom() { return _cornerValueFrom; }
        static inline float CornerValueTo() { return _cornerValueTo; }

        // Derived properties
        // ##################

        static inline float HurstExponent() { return 3 - _fractalDimension; }

        static void LoadDataSourceNodeParameters(XERCES_CPP_NAMESPACE_QUALIFIER DOMNode *parameters);

    } MidpointDisplacementProperties;

}

#endif