00001 // This is oxl/osl/osl_break_edge.h 00002 #ifndef osl_break_edge_h_ 00003 #define osl_break_edge_h_ 00004 #ifdef VCL_NEEDS_PRAGMA_INTERFACE 00005 #pragma interface 00006 #endif 00007 //: 00008 // \file 00009 // \author fsm 00010 00011 class osl_edge; 00012 #include <vcl_list.h> 00013 #include <vcl_vector.h> 00014 00015 //: Break the given edge at the positions indicated. 00016 // 00017 // The first element of 'where' must be 0 and the last 00018 // must be in->size()-1. 00019 // 00020 // The output edges will be in the order of the edgelchain 00021 // and the first (resp. last) output edge will share its 00022 // start (resp. end) vertex with the start (resp. end) 00023 // vertex of the given edge. 00024 // 00025 // The input edge is not modified in any way, though its 00026 // endpoints will obviously have the reference counts 00027 // increased. 00028 void osl_break_edge(osl_edge const *in, 00029 vcl_vector<unsigned> const &where, 00030 vcl_list<osl_edge*> *broken); 00031 00032 //: Break the given edge at points of "high curvature". 00033 // 00034 // This means edgels where the rms line fitting error over 00035 // a neighbourhood of the given size exceeds the given threshold. 00036 // 00037 // For a neighbourhood size of k,the number of edgels used in 00038 // each line fit is 2*k+1 (so the default is 5 edgels). The new 00039 // edges are pushed onto the end of the given vcl_list in the 00040 // obvious order. 00041 void osl_break_edge(osl_edge const *in, 00042 vcl_list<osl_edge*> *broken, 00043 double threshold = 0.2, 00044 unsigned nbhd_size = 2); 00045 00046 #endif // osl_break_edge_h_
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