I found that there is a global search for feature edges in the software.But if I want

Part of the feature edge about meshlib HOT 2 CLOSED

meshinspector commented on May 21, 2024

Part of the feature edge

from meshlib.

Comments (2)

Grantim commented on May 21, 2024

Hello, we have manual edge selector tool. Finding this edge automaticaly may be challenging and require some geometry specific code, I don't think it can be done in common case.
I suggest you can do something like this:

UndirectedEdgeBitSet creaseEdges = mesh.findCreaseEdges( 15.0f/180.0f * PI_F ); // 15 deg like on your screen
UndirectedEdgeBitSet resEdges = creaseEdges;
for ( auto ue : creaseEdges )
{
    if ( !doesMeetCriteria( mesh, creaseEdges, ue ) )
        resEdges.set( ue, false );
}

In your case it can be

bool doesMeetCriteria( const Mesh& m, const UndirectedEdgeBitSet& creases , UndirectedEdgeId ue )
{
    auto lengthSq = mesh.lengthSq( ue );
    for ( auto e : orgRing( mesh.topology, EdgeId( ue ) ) ) // check length of nearby creases (around one of the edge vertices)
    {
        if ( !creases.test( e.undirected() ) )
            continue;
        if ( mesh.lengthSq( e.undirected() ) >= lengthSq )
            return false;
    }
    for ( auto e : orgRing( mesh.topology, EdgeId( ue ).sym() ) ) // check length of nearby creases (around another one of the edge vertices)
    {
        if ( !creases.test( e.undirected() ) )
            continue;
        if ( mesh.lengthSq( e.undirected() ) >= lengthSq )
            return false;
    }
    return true;
}

This code sample select first all creases edges like on your screen, than it removes all creases with neighbour creases that are longer then them. ( it have not tested this code, it may require fixes, but the idea is to make good criteria based on your specific data )

from meshlib.