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#include "Contours.hh"
void CenterAndReduce(const Contours::Contour& source,
Contours::Contour& dest,
unsigned int shift, // integer coordinate bit reduction
double& drx, // returned centroid
double& dry // returned centroid
);
void RotCenterAndReduce(const Contours::Contour& source,
Contours::Contour& dest,
double phi, // clockwise rotation in radians
unsigned int add, // added to all coordinates to avoid negative values,
// should be at least image diagonal length
unsigned int shift, // integer coordinate bit reduction
double& drx, // returned centroid
double& dry // returned centroid
);
// realy fast summation of minimum L1-distance
double L1Dist(const Contours::Contour& a,
const Contours::Contour& b,
double drxa, // a centroid
double drxb, // a centroid
double drya, // b centroid
double dryb, // b centroid
unsigned int shift, // reduction bits (in case a and b are reduced) or 0
double& transx, // returned translation for a
double& transy // returned translation for a
);
// plot contour in specified color
// c coordinates must not be outside image range
void DrawContour(Image& img, const Contours::Contour& c, unsigned int r, unsigned int g, unsigned int b);
// plot translated contour
// c coordinates may lie outside image
void DrawTContour(Image& img, const Contours::Contour& c, unsigned int tx, unsigned int ty, unsigned int r, unsigned int g, unsigned int b);
// functions to cache preprocessed contours on disk
bool WriteContour(FILE* f, const Contours::Contour& source);
bool ReadContour(FILE* f, Contours::Contour& dest);
bool WriteContourArray(FILE* f, const std::vector <Contours::Contour*>& contours);
bool ReadContourArray(FILE* f, std::vector <Contours::Contour*>& contours);
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