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Merge pull request #3234 from sloriot/BGL-fix_copy_fg_with_garbage 

Fix copy_face_graph with target mesh having garbage
This commit is contained in:
Laurent Rineau 2018-07-26 17:31:15 +02:00
parent 464491a3a1 e5ec40abe9
commit f3b9d03ccf
1 changed files with 8 additions and 4 deletions
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12
BGL/include/CGAL/boost/graph/copy_face_graph.h
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@ -74,6 +74,10 @@ void copy_face_graph_impl(const SourceMesh& sm, TargetMesh& tm,
sm_halfedge_descriptor sm_h = halfedge(sm_e, sm), sm_h_opp = opposite(sm_h, sm);
tm_halfedge_descriptor tm_h = halfedge(tm_e, tm), tm_h_opp = opposite(tm_h, tm);
// set next pointers to itself (in case previous garbage is present)
set_next( tm_h, tm_h, tm );
set_next( tm_h_opp, tm_h_opp, tm );
put(hmap, sm_h, tm_h);
put(hmap, sm_h_opp, tm_h_opp);
*h2h++=std::make_pair(sm_h, tm_h);
@ -83,14 +87,14 @@ void copy_face_graph_impl(const SourceMesh& sm, TargetMesh& tm,
tm_border_halfedges.push_back( tm_h );
sm_border_halfedges.push_back( sm_h );
set_face(tm_h, tm_null_face, tm);
CGAL_assertion(next(tm_h, tm) == boost::graph_traits<TargetMesh>::null_halfedge() );
CGAL_assertion(next(tm_h, tm) == tm_h );
}
if( is_border(sm_h_opp, sm) ){
tm_border_halfedges.push_back( tm_h_opp );
sm_border_halfedges.push_back( sm_h_opp );
set_face(tm_h_opp, tm_null_face, tm);
CGAL_assertion(next(tm_h_opp, tm) == boost::graph_traits<TargetMesh>::null_halfedge() );
CGAL_assertion(next(tm_h_opp, tm) == tm_h_opp );
}
//create a copy of interior vertices only once
@ -138,7 +142,7 @@ void copy_face_graph_impl(const SourceMesh& sm, TargetMesh& tm,
{
tm_halfedge_descriptor tm_h = tm_border_halfedges[i];
if ( next(tm_h, tm) != boost::graph_traits<TargetMesh>::null_halfedge() )
if ( next(tm_h, tm) != tm_h )
continue; //already set
tm_halfedge_descriptor tm_h_prev = tm_h;
@ -146,7 +150,7 @@ void copy_face_graph_impl(const SourceMesh& sm, TargetMesh& tm,
BOOST_FOREACH(sm_halfedge_descriptor sm_h,
halfedges_around_face(next(sm_border_halfedges[i], sm), sm))
{
CGAL_assertion(next(tm_h_prev, tm) == boost::graph_traits<TargetMesh>::null_halfedge());
CGAL_assertion(next(tm_h_prev, tm) == tm_h_prev);
tm_h = get(hmap, sm_h);
set_next(tm_h_prev, tm_h, tm);
tm_h_prev=tm_h;