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  /external/opencv/cv/src/
cvshapedescr.cpp 561 CvPoint pt_s, pt_e; /* first and last points */ local
602 CV_READ_SEQ_ELEM( pt_s, reader );
608 nx = pt_s.y - pt_e.y;
609 ny = pt_e.x - pt_s.x;
631 sk = nx * (xi - pt_s.x) + ny * (yi - pt_s.y);
660 t = ((yi_1 - pt_s.y) * du + dv * (pt_s.x - xi_1)) /
663 t = (xi_1 - pt_s.x) / dx;
666 x_s = pt_s.x + t * dx
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