/// <summary>
/// This function is cool, just stick in a set of points, it'll add them to the
/// array, and create a face. It will take account of duplicate vertices too!
/// </summary>
/// <param name="vertexData">A set of vertices to make into a face.</param>
public virtual void AddFaceFromVertexData(Vertex[] vertexData)
{
// Create a face.
Face newFace = new Face();
// Go through the vertices...
foreach (Vertex v in vertexData)
{
// Do we have this vertex already?
int at = VertexSearch.Search(vertices, 0, v, 0.01f);
// Add the vertex, and index it.
if (at == -1)
{
newFace.Indices.Add(new Index(vertices.Count));
vertices.Add(v);
}
else
{
newFace.Indices.Add(new Index(at));
}
}
// Add the face.
faces.Add(newFace);
}
/// <summary>
/// Call this function as soon as you change the polygons geometry, it will
/// re-generate normals, etc.
/// </summary>
/// <param name="regenerateNormals">Regenerate Normals.</param>
public virtual void Validate(bool regenerateNormals)
{
if (regenerateNormals)
{
normals.Clear();
}
// Go through each face.
foreach (Face face in faces)
{
if (regenerateNormals)
{
// Find a normal for the face.
Vertex normal = face.GetSurfaceNormal(this);
// Does this normal already exist?
int index = VertexSearch.Search(normals, 0, normal, 0.001f);
if (index == -1)
{
index = normals.Count;
normals.Add(normal);
}
// Set the index normal.
foreach (Index i in face.Indices)
{
i.Normal = index;
}
}
}
}