public override ActionResult DoAction()
{
if (MeshSelection.selectedObjectCount < 1)
{
return(ActionResult.NoSelection);
}
UndoUtility.RecordSelection("Delete Face");
int count = 0;
foreach (ProBuilderMesh pb in MeshSelection.topInternal)
{
if (pb.selectedFaceCount == pb.facesInternal.Length)
{
Debug.LogWarning("Attempting to delete all faces on this mesh... I'm afraid I can't let you do that.");
continue;
}
pb.DeleteFaces(pb.selectedFacesInternal);
count += pb.selectedFaceCount;
pb.ToMesh();
pb.Refresh();
pb.Optimize();
}
MeshSelection.ClearElementSelection();
ProBuilderEditor.Refresh();
if (count > 0)
{
return(new ActionResult(ActionResult.Status.Success, "Delete " + count + " Faces"));
}
return(new ActionResult(ActionResult.Status.Failure, "No Faces Selected"));
}
/// <summary>
/// Return a pb_ActionResult indicating the success/failure of action.
/// </summary>
/// <returns></returns>
protected override ActionResult PerformActionImplementation()
{
var selection = MeshSelection.top.ToArray();
Undo.RecordObjects(selection, "Removing Edges");
List <Face> edgeFaces = new List <Face>();
Dictionary <Face, int> faceToMergeGroup = new Dictionary <Face, int>();
HashSet <int> mergeGroupIDs = new HashSet <int>();
List <List <Face> > mergeGroups = new List <List <Face> >();
foreach (ProBuilderMesh pbMesh in selection)
{
if (pbMesh.selectedEdgeCount > 0)
{
var selectedEdges = pbMesh.selectedEdges;
faceToMergeGroup.Clear();
foreach (var edge in selectedEdges)
{
edgeFaces.Clear();
mergeGroupIDs.Clear();
//Retrieving impacted faces from edge
ElementSelection.GetNeighborFaces(pbMesh, edge, edgeFaces);
//Chacking all edges status
foreach (var face in edgeFaces)
{
if (faceToMergeGroup.ContainsKey(face))
{
mergeGroupIDs.Add(faceToMergeGroup[face]);
}
else
{
faceToMergeGroup.Add(face, -1);
}
}
//These faces haven't been seen before
if (mergeGroupIDs.Count == 0)
{
foreach (var face in edgeFaces)
{
faceToMergeGroup[face] = mergeGroups.Count;
}
mergeGroups.Add(new List <Face>(edgeFaces));
}
//If only a face should already be merge, add other faces to the same merge group
else if (mergeGroupIDs.Count == 1)
{
foreach (var face in edgeFaces)
{
if (faceToMergeGroup[face] == -1)
{
int index = mergeGroupIDs.First();
faceToMergeGroup[face] = index;
mergeGroups[index].Add(face);
}
}
}
//If more than a face already belongs to a merge group, merge these groups together
else
{
//Group the different mergeGroups together
List <Face> facesToMerge = new List <Face>();
foreach (var groupID in mergeGroupIDs)
{
facesToMerge.AddRange(mergeGroups[groupID]);
mergeGroups[groupID] = null;
}
foreach (var face in edgeFaces)
{
if (!facesToMerge.Contains(face))
{
facesToMerge.Add(face);
}
}
//Remove unnecessary groups
mergeGroups.RemoveAll(group => group == null);
//Add newly created one
mergeGroups.Add(facesToMerge);
//Update groups references
for (int i = 0; i < mergeGroups.Count; i++)
{
foreach (var face in mergeGroups[i])
{
faceToMergeGroup[face] = i;
}
}
}
}
foreach (var mergeGroup in mergeGroups)
{
MergeElements.Merge(pbMesh, mergeGroup);
}
pbMesh.ToMesh();
pbMesh.Refresh();
pbMesh.Optimize();
}
}
MeshSelection.ClearElementSelection();
// Rebuild the pb_Editor caches
ProBuilderEditor.Refresh();
return(new ActionResult(ActionResult.Status.Success, "Edges Removed"));
}