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CTData.h

// CTData.h: interface for the CCTData class.
//

#if !defined(AFX_CTDATA_H__B88F1DF0_961E_48F0_A1F3_D85BFC5863A1__INCLUDED_)
#define AFX_CTDATA_H__B88F1DF0_961E_48F0_A1F3_D85BFC5863A1__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#include "MyMathUtils.h"
#include "fftw.h"

extern int shift;

const int fact=340;   //factor used for scaling in OpenGL

const double pi=3.1415926535;
const double pi_mul_2=6.28318530718;



class CCTData  
{

public:

        int dimX;   //number of data elements in x-direction
        int dimY;   //number of data elements in y-direction
        int dimZ;   //number of data elements in z-direction
        int dimU;   //number of data elements to be rendered in u-direction
        int dimV;   //number of data elements to be rendered in v-direction

//      float data[dimX][dimY][dimZ];         //array of data to be transformed for FHT3D
//      float show[dimU][dimV];               //array of data to be transformed for FHT2D
        fftw_complex *data;                   //array of data to be transformed for FFT3D
        fftw_complex *show;                   //array of data to be transformed for FFT2D
        GLubyte *show1;                                           //array of data to be rendered
        fftwnd_plan p2D;                      //plan to perform FFT2D
        fftwnd_plan p3D;                      //plan to perform FFT3D
        float hlp[256];                       //helper array
        Vektor3f viewPoint[4];                //coordinate cross
        Vektor3f viewDir;                     //viewing direction

        struct Header
        {
                short xDim, yDim, zDim;
        };

        Header header;


        CCTData()
        {
                Initialize();   
        }


        virtual ~CCTData()
        {
                Destroy();
        }

        void showData();

        void extractPlane();

        void getData(CString fileName);

        void setViewDir();

        void setViewPoints();

        void drawViewPoints();

        void RotateViewX(float angle);

        void RotateViewY(float angle);

protected:

        void Initialize();

        void Destroy();

        int linear(float t, float *coeff);

        void FHT3D();

        void FHT2D();

        void FFT3D();

        void FFT2D();

        void shift3D();

        void shift2D();

        float sqr(float d);

        void vector_hartley_transform(float* v, unsigned long size,     long stride);


};

#endif // !defined(AFX_CTDATA_H__B88F1DF0_961E_48F0_A1F3_D85BFC5863A1__INCLUDED_)

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