- bndSegs.push_back( BndSeg( &inSeg, *e, inSeg._p1->_param ));
- }
- // segments around 2nd concave point
- size_t ip1 = inSeg._p1->index( inPoints );
- if ( inPntChecked[ ip1 ] )
- for ( e = inSeg._p1->_edges.rbegin(); e != inSeg._p1->_edges.rend(); ++e )
+
+ // segments around 1st concave point
+ size_t ip0 = inSeg._p0->index( inPoints );
+ if ( inPntChecked[ ip0 ] )
+ for ( e = inSeg._p0->_edges.rbegin(); e != inSeg._p0->_edges.rend(); ++e )
+ bndSegs.push_back( BndSeg( &inSeg, *e, inSeg._p0->_param ));
+ inPntChecked[ ip0 ] = false;
+
+ // segments of InSegment's
+ const size_t nbMaEdges = inSeg._edges.size();
+ switch ( nbMaEdges ) {
+ case 0: // "around" circle center
+ bndSegs.push_back( BndSeg( &inSeg, 0, inSeg._p1->_param )); break;
+ case 1:
+ bndSegs.push_back( BndSeg( &inSeg, inSeg._edges.back(), inSeg._p1->_param )); break;
+ default:
+ gp_XY inSegDir( inSeg._p1->_a - inSeg._p0->_a,
+ inSeg._p1->_b - inSeg._p0->_b );
+ const double inSegLen2 = inSegDir.SquareModulus();
+ e = inSeg._edges.rbegin();
+ for ( size_t iE = 1; iE < nbMaEdges; ++e, ++iE )
+ {
+ gp_XY toMA( (*e)->vertex0()->x() - inSeg._p0->_a,
+ (*e)->vertex0()->y() - inSeg._p0->_b );
+ double r = toMA * inSegDir / inSegLen2;
+ double u = r * inSeg._p1->_param + ( 1. - r ) * inSeg._p0->_param;
+ bndSegs.push_back( BndSeg( &inSeg, *e, u ));
+ }
