Function walkAcrossFace

src/dynamicMesh/meshCut/cellLooper/topoCellLooper.C:286–355

Starts from edge and vertex on edge on face (or neighbouring face) and steps either to existing vertex (vertI != -1) or to edge (vertI == -1) by walking point-edge and crossing nFeats featurePoints.

// and steps either to existing vertex (vertI != -1) or to edge (vertI == -1)
// by walking point-edge and crossing nFeats featurePoints.
void Foam::topoCellLooper::walkAcrossFace
(
    const cellFeatures& features,
    const label facei,
    const label startEdgeI,
    const label startVertI,
    const label nFeats,

    label& edgeI,
    label& vertI
) const
{
    label oppositeVertI = -1;
    label oppositeEdgeI = -1;

    // Go to oppositeEdge and a vertex on that.
    walkFace
    (
        features,
        facei,
        startEdgeI,
        startVertI,
        nFeats,

        oppositeEdgeI,
        oppositeVertI
    );

    // Loop over super edge to find internal points if there are any.

    labelList superEdge =
        getSuperEdge
        (
            features,
            facei,
            oppositeEdgeI,
            oppositeVertI
        );

    label sz = superEdge.size();

    if (sz == 2)
    {
        // No non-feature point inbetween feature points.
        // Mark edge.

        vertI = -1;
        edgeI = oppositeEdgeI;
    }
    else if (sz == 3)
    {
        vertI = superEdge[1];
        edgeI = -1;
    }
    else
    {
        //Should choose acc. to geometry!
        label index = sz/2;