private void ReadLeafFaces()
{
//Length of the Lump
int LeafFacesLength = Header.DirEntries[5].Length;
//Number of textures to load
int nbLeafFaces = LeafFacesLength / (sizeof(int));
LeafFaces = new leafface[nbLeafFaces];
for (int i = 0; i < nbLeafFaces; i++)
{
//face
int face = ReadInt();
LeafFaces[i] = new leafface(face);
}
}
private void DetermineVisibleFaces()
{
int leafIndex = findLeaf();
int clusterIndex = file.Leaves[leafIndex].Cluster;
//Visible leaves
List <leaf> visibleLeaves = new List <leaf>();
foreach (leaf l in file.Leaves)
{
//if(isLeafVisible(clusterIndex,l.Cluster))
visibleLeaves.Add(l);
}
//visible faces
HashSet <int> usedIndices = new HashSet <int>();
List <leafface> leafFaces = new List <leafface>();
List <face> visibleFaces = new List <face>();
foreach (leaf l in visibleLeaves)
{
for (int i = l.LeafFace; i < l.LeafFace + l.N_LeafFaces; i++)
{
if (!usedIndices.Contains(i))
{
leafface f = file.LeafFaces[i];
leafFaces.Add(f);
usedIndices.Add(i);
}
}
}
//face
foreach (leafface l in leafFaces)
{
face f = file.Faces[l.Face];
visibleFaces.Add(f);
}
List <int>[] Texturearrays = new List <int> [file.Textures.Count()];
for (int i = 0; i < file.Textures.Count(); i++)
{
Texturearrays[i] = new List <int>();
}
//arrays
foreach (face f in visibleFaces)
{
if (f.Type == 1 || f.Type == 3)
{
//Meshes and faces
for (int i = f.Meshvert; i < f.Meshvert + f.N_Meshverts; i++)
{
//index
int index = f.Vertex + file.MeshVerts[i].Offset;
Texturearrays[f.Texture].Add(index);
}
}
}
List <int> realList = new List <int>();
textureLengths = new int[file.Textures.Count()];
int cpt = 0;
for (int i = 0; i < Texturearrays.Length; i++)
{
realList.AddRange(Texturearrays[i]);
cpt += Texturearrays[i].Count;
textureLengths[i] = cpt;
}
IBuffer = new IndexBuffer(Game.GraphicsDevice, IndexElementSize.ThirtyTwoBits, realList.Count, BufferUsage.WriteOnly);
IBuffer.SetData(realList.ToArray());
}