/// <summary>
/// Condense co-incident vertex positions per-face. vertices must already be marked as shared in the sharedIndexes
/// array to be considered. This method is really only useful after merging faces.
/// </summary>
/// <param name="mesh"></param>
/// <param name="faces"></param>
internal static void CollapseCoincidentVertices(ProBuilderMesh mesh, IEnumerable <Face> faces)
{
Dictionary <int, int> lookup = mesh.sharedVertexLookup;
Dictionary <int, int> matches = new Dictionary <int, int>();
foreach (Face face in faces)
{
matches.Clear();
for (int i = 0; i < face.indexesInternal.Length; i++)
{
int common = lookup[face.indexesInternal[i]];
if (matches.ContainsKey(common))
{
face.indexesInternal[i] = matches[common];
}
else
{
matches.Add(common, face.indexesInternal[i]);
}
}
face.InvalidateCache();
}
MeshValidation.RemoveUnusedVertices(mesh);
}
public static int[] RemoveUnusedVertices(this ProBuilderMesh mesh)
{
List <int> removed = new List <int>();
MeshValidation.RemoveUnusedVertices(mesh, removed);
return(removed.ToArray());
}
