CSED.h

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#ifndef CSED_h
#define CSED_h

#include "DistanceTransform.h"
#include <iostream>
using namespace std;
//----------------------------------------------------------------------
class CSED : public DistanceTransform {

public:
    CSED ( const int xSize, const int ySize, const bool unload=true )
        : DistanceTransform(xSize, ySize, unload)
    {
    }

    ~CSED ( ) {
        if (this->v!=NULL) {
            free( this->v );
            this->v = NULL;
        }
    }

    void doTransform ( const unsigned char* const I );

    virtual inline bool getP ( const int x, const int y, int& px, int& py )
    const {
        if (v==NULL) {
            px = py = -1;
            return false;
        }
        const int s = sub(x,y);
        px = x - v[s].x;
        py = y - v[s].y;
        return true;
    }

protected:
    P*  v;

private:
    inline void test ( const int px, const int py, const int ox, const int oy,
                       vector<P*>* list2, const int i );

    static inline double D ( const int x, const int y ) {
        return sqrt( (double)x * x + y * y );
    }

    static inline double D ( P& p ) {
        return sqrt( (double)p.x * p.x + p.y * p.y );
    }

    static inline int sgn ( int i ) {
        if (i<0)    return -1;
        if (i>0)    return  1;
        return 0;
    }
};

#endif
//----------------------------------------------------------------------

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