public static List<MeshedFace> Mesh(Region region)
{
var res = new List<MeshedFace>();
MeshY(region, res);
MeshX(region, res);
MeshZ(region, res);
return res;
}
public void Remove(Region r)
{
int h = Hash(r);
var rl = rLists[h];
if(rl != null) {
rl.Remove(r);
if(rl.Count < 1)
rLists[h] = null;
}
}
public bool TryAdd(Region r)
{
int h = Hash(r);
List<Region> rl;
bool b = true;
if(rLists[h] == null) {
rl = new List<Region>(INITIAL_CAPACITY);
rLists[h] = rl;
}
rl = rLists[h];
for(int i = 0; i < rl.Count; i++) {
if(rl[i].loc == r.loc) b = false;
}
if(b) rl.Add(r);
return b;
}
public Region(VoxWorld w)
{
World = w;
loc = Point.Zero;
// Create Empty Region
voxels = new Voxel[VOXEL_COUNT];
for(int i = 0; i < VOXEL_COUNT; i++)
voxels[i] = Voxel.Empty;
// Non-calculated Boundaries
rBS = new RegionBoundaryState[4];
for(int i = 0; i < 4; i++)
rBS[i] = new RegionBoundaryState();
// No Neighbors
rNX = rPX = rNZ = rPZ = null;
}
public RegionLoader(Region r)
{
region = r;
}
public RegionTesselator(Region r, VoxelRenderer vg)
{
region = r;
renderer = vg;
}
void OnRegionRemoval(VoxWorld w, Region r)
{
lock(activeRegions) {
activeRegions.Remove(r);
}
}
void OnRegionAddition(VoxWorld w, Region r)
{
lock(activeRegions) {
activeRegions.Add(r);
}
}
private static ushort VoxelID(Region region, int x, int y, int z)
{
return region.voxels[Region.ToIndex(x, y, z)].ID;
}
private static void MeshX(Region region, List<MeshedFace> res)
{
// Find Neighbor Regions
Region rNeg = region.rNX;
Region rPos = region.rPX;
// Loop Through All Planes
Vector3I pos = Vector3I.Zero;
for(pos.X = 0; pos.X <= Region.WIDTH; pos.X++) {
int[] mask = new int[Region.HEIGHT * Region.DEPTH];
int mi = 0;
// Create Mask
int nID, pID;
for(pos.Y = 0; pos.Y < Region.HEIGHT; pos.Y++) {
for(pos.Z = 0; pos.Z < Region.DEPTH; pos.Z++) {
// Get Negative Voxel
if(pos.X > 0)
nID = VoxelID(region, pos.X - 1, pos.Y, pos.Z);
else if(rNeg != null)
nID = VoxelID(rNeg, Region.WIDTH - 1, pos.Y, pos.Z);
else
nID = 0; // VoxelID(region, pos.X, pos.Y, pos.Z);
// Get Positive Voxel
if(pos.X < Region.WIDTH)
pID = VoxelID(region, pos.X, pos.Y, pos.Z);
else if(rPos != null)
pID = VoxelID(rPos, 0, pos.Y, pos.Z);
else
pID = 0; // VoxelID(region, pos.X - 1, pos.Y, pos.Z); ;
// Create Mask
VoxData nVD = region.World.Atlas[(ushort)nID];
VoxData pVD = region.World.Atlas[(ushort)pID];
if(nID == pID || (!nVD.FaceType.CanShowFace(pVD.FaceType, Voxel.FACE_PX) && !pVD.FaceType.CanShowFace(nVD.FaceType, Voxel.FACE_NX)))
mask[mi] = 0;
else if(nID != 0)
mask[mi] = nID;
else
mask[mi] = -pID;
mi++;
}
}
// Generate Rectangles
mi = 0;
for(pos.Y = 0; pos.Y < Region.HEIGHT; pos.Y++) {
for(pos.Z = 0; pos.Z < Region.DEPTH; pos.Z++, mi++) {
int id = mask[mi];
if(id != 0) {
int su = pos.Z;
int w = 1;
pos.Z++;
mi++;
while(pos.Z < Region.DEPTH && mask[mi] == id) {
w++;
pos.Z++;
mi++;
}
pos.Z--;
mi--;
MeshedFace mf;
if(id < 0) {
mf = new MeshedFace(
new Vector3I(pos.X, pos.Y + 1, su),
new Vector3I(0, 0, 1),
new Vector3I(0, -1, 0),
new Point(w, 1),
-id,
Voxel.FACE_NX
);
}
else {
mf = new MeshedFace(
new Vector3I(pos.X, pos.Y + 1, pos.Z + 1),
new Vector3I(0, 0, -1),
new Vector3I(0, -1, 0),
new Point(w, 1),
id,
Voxel.FACE_PX
);
}
res.Add(mf);
}
}
}
}
}
private static void MeshY(Region region, List<MeshedFace> res)
{
// Loop Through All Planes
Vector3I pos = Vector3I.Zero;
for(pos.Y = 0; pos.Y <= Region.HEIGHT; pos.Y++) {
int[] mask = new int[Region.WIDTH * Region.DEPTH];
int mi = 0;
// Create Mask
int nID, pID;
for(pos.Z = 0; pos.Z < Region.DEPTH; pos.Z++) {
for(pos.X = 0; pos.X < Region.WIDTH; pos.X++) {
// Get Negative Voxel
if(pos.Y > 0)
nID = VoxelID(region, pos.X, pos.Y - 1, pos.Z);
else
nID = VoxelID(region, pos.X, pos.Y, pos.Z);
// Get Positive Voxel
if(pos.Y < Region.HEIGHT)
pID = VoxelID(region, pos.X, pos.Y, pos.Z);
else
pID = VoxelID(region, pos.X, pos.Y - 1, pos.Z);
// Create Mask
VoxData nVD = region.World.Atlas[(ushort)nID];
VoxData pVD = region.World.Atlas[(ushort)pID];
if(nID == pID || (!nVD.FaceType.CanShowFace(pVD.FaceType, Voxel.FACE_PY) && !pVD.FaceType.CanShowFace(nVD.FaceType, Voxel.FACE_NY)))
mask[mi] = 0;
else if(nID != 0)
mask[mi] = nID;
else
mask[mi] = -pID;
mi++;
}
}
// Generate Rectangles
mi = 0;
for(int v = 0; v < Region.DEPTH; v++) {
for(int u = 0; u < Region.WIDTH; u++, mi++) {
int id = mask[mi];
if(id != 0) {
int su = u;
int w = 1;
u++;
mi++;
while(u < Region.WIDTH && mask[mi] == id) {
w++;
u++;
mi++;
}
u--;
mi--;
MeshedFace mf;
if(id < 0) {
mf = new MeshedFace(
new Vector3I(su, pos.Y, v + 1),
new Vector3I(1, 0, 0),
new Vector3I(0, 0, -1),
new Point(w, 1),
-id,
Voxel.FACE_NY
);
}
else {
mf = new MeshedFace(
new Vector3I(su, pos.Y, v),
new Vector3I(1, 0, 0),
new Vector3I(0, 0, 1),
new Point(w, 1),
id,
Voxel.FACE_PY
);
}
res.Add(mf);
}
}
}
}
}
public int Hash(Region r)
{
return Hash(r.loc.X, r.loc.Y);
}
public bool PlaceRegion(Region region)
{
int x, z;
if(!IsInArray(region.loc.X, region.loc.Y, out x, out z)) {
// TODO: Send To Unloader
return false;
}
int i = ToIndex(x, z);
// Check Old Region
if(regions[i] != null) {
regions[i] = null;
if(OnRegionDeletion != null)
OnRegionDeletion(this, regions[i]);
}
// Add To Array
regions[i] = region;
if(OnRegionAddition != null)
OnRegionAddition(this, region);
return true;
}
public Region TryCreateRegion(int x, int z)
{
Region r = new Region(this);
r.loc = new Point(x, z);
if(pager.TryAdd(r))
return r;
else
return null;
}