declarative

surface_generator_filter_fft.hh
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			#ifndef SURFACE_GENERATOR_FILTER_FFT_H
			#define SURFACE_GENERATOR_FILTER_FFT_H
			/* -------------------------------------------------------------------------- */
			#include "surface_generator.hh"
			#include "surface_generator_filter.hh"
			/* -------------------------------------------------------------------------- */


			class SurfaceGeneratorFilterFFT : public virtual SurfaceGeneratorFilter {
			public:

			//! can construct a generator with default values
			SurfaceGeneratorFilterFFT();

			//! get high frequency cut
			int & getQ2(){return q2;};
			//! get low frequency cut
			int & getQ0(){return q0;};
			//! get roll frequency cut
			int & getQ1(){return q1;};
			//! get hurst
			Real & getHurst(){return hurst;};


			protected:

			void parseInputFile(std::ifstream & fp);
			void computeFilterCoefficients();
			void buildCorrelationInput();

			complex computeFractalPSDProfile(int i, int j);

			int q0;
			int q1;
			int q2;
			Real hurst;
			};

			#endif