public static int[] RemoveDegenerateTriangles(this ProBuilderMesh mesh)
{
List <int> removed = new List <int>();
MeshValidation.RemoveDegenerateTriangles(mesh, removed);
return(removed.ToArray());
}
/// <summary>
/// Collapses all passed indexes to a single shared index.
/// </summary>
/// <remarks>
/// Retains vertex normals.
/// </remarks>
/// <param name="mesh">Target mesh.</param>
/// <param name="indexes">The indexes to merge to a single shared vertex.</param>
/// <param name="collapseToFirst">If true, instead of merging all vertices to the average position, the vertices will be collapsed onto the first vertex position.</param>
/// <returns>The first available local index created as a result of the merge. -1 if action is unsuccessfull.</returns>
public static int MergeVertices(this ProBuilderMesh mesh, int[] indexes, bool collapseToFirst = false)
{
if (mesh == null)
{
throw new ArgumentNullException("mesh");
}
if (indexes == null)
{
throw new ArgumentNullException("indexes");
}
Vertex[] vertices = mesh.GetVertices();
Vertex cen = collapseToFirst ? vertices[indexes[0]] : Vertex.Average(vertices, indexes);
mesh.SetVerticesCoincident(indexes);
UVEditing.SplitUVs(mesh, indexes);
int sharedVertexHandle = mesh.GetSharedVertexHandle(indexes.First());
mesh.SetSharedVertexValues(sharedVertexHandle, cen);
SharedVertex merged = mesh.sharedVerticesInternal[sharedVertexHandle];
List <int> removedIndexes = new List <int>();
MeshValidation.RemoveDegenerateTriangles(mesh, removedIndexes);
// get a non-deleted index to work with
int ind = -1;
for (int i = 0; i < merged.Count; i++)
{
if (!removedIndexes.Contains(merged[i]))
{
ind = merged[i];
}
}
int res = ind;
for (int i = 0; i < removedIndexes.Count; i++)
{
if (ind > removedIndexes[i])
{
res--;
}
}
return(res);
}