public static void RemoveFacesWithTwoEdges(HMesh hmesh)
{
var faces = new List <Face>(hmesh.GetFaces());
for (int i = 0; i < faces.Count; i++)// (var face in hmesh.GetFaces())
{
var edges = faces[i].Circulate();
if (edges.Count == 2)
{
var opp1 = edges[0].opp;
var opp2 = edges[1].opp;
var vert1 = edges[0].vert;
var vert2 = edges[1].vert;
// reassign vertex halfedges to a he not to be destroyed
Halfedge.Glue(opp1, opp2);
hmesh.Destroy(faces[i]);
hmesh.Destroy(edges[0]);
hmesh.Destroy(edges[1]);
}
}
}
// destroys linked edges (and vertices if no longer used)
public void Dissolve()
{
var cir = Circulate();
foreach (var c in cir)
{
var vert = c.vert;
if (c.opp != null)
{
c.opp.opp = null;
}
hmesh.Destroy(c);
if (vert.CirculateAllIngoing().Count == 0)
{
hmesh.Destroy(vert);
}
}
hmesh.Destroy(this);
}
public Vertex Collapse(bool center = false)
{
if (center)
{
vert.position = (vert.position + prev.vert.position) * 0.5f;
vert.uv1 = (vert.uv1 + prev.vert.uv1) * 0.5f;
vert.uv2 = (vert.uv2 + prev.vert.uv2) * 0.5f;
}
CollapseInternal(false);
if (opp != null)
{
opp.CollapseInternal(true);
hmesh.Destroy(opp);
}
hmesh.Destroy(this);
return(vert);
}
