Function normal

source/MRMesh/MRMeshMath.cpp:493–508

}

Vector3f normal( const MeshTopology & topology, const VertCoords & points, const MeshTriPoint & p )
{
    if ( p.bary.b == 0 )
    {
        // do not require to have triangular face to the left of p.e
        const Vector3f n0 = normal( topology, points, topology.org( p.e ) );
        const Vector3f n1 = normal( topology, points, topology.dest( p.e ) );
        return lerp( n0, n1, p.bary.a ).normalized();
    }
    VertId a, b, c;
    topology.getLeftTriVerts( p.e, a, b, c );
    auto n0 = normal( topology, points, a );
    auto n1 = normal( topology, points, b );
    auto n2 = normal( topology, points, c );
    return p.bary.interpolate( n0, n1, n2 ).normalized();
}

Vector3f pseudonormal( const MeshTopology & topology, const VertCoords & points, VertId v, const FaceBitSet * region )
{