public static MeshData CreateMesh(IVoxelContainer container, Dictionary <ChunkSide, Chunk> neighbours, MaterialCollection materialCollection, int?slice, bool topSlice, out List <Vector3> upVoxels)
{
//create planes
if (neighbours == null)
{
neighbours = new Dictionary <ChunkSide, Chunk>
{
{ ChunkSide.Nx, null },
{ ChunkSide.Px, null },
{ ChunkSide.Nz, null },
{ ChunkSide.Pz, null },
{ ChunkSide.Ny, null },
{ ChunkSide.Py, null },
};
}
var size = container.GetSize();
var planes = InitializePlanes(container, neighbours, materialCollection, slice, topSlice, out upVoxels);
//Planes to Rects
var rects = new List <Rect> [6][];
for (var side = 0; side < 6; side++)
{
rects[side] = new List <Rect> [side < 2 ? size.x: (side < 4 ? size.z: size.y)];
for (var depth = 0; depth < rects[side].Length; depth++)
{
rects[side][depth] = CreateRectsForPlane(planes[side][depth]);
}
}
//Rects to Mesh
var verticesL = new List <Vector3>();
var trianglesL = new Dictionary <int, List <int> >();
var normalsL = new List <Vector3>();
var uvsL = new List <Vector2>();
for (var side = 0; side < 6; side++)
{
for (var depth = 0; depth < rects[side].Length; depth++)
{
AddRectsToMesh(side, depth, rects[side][depth], materialCollection, ref verticesL, ref trianglesL, ref normalsL, ref uvsL);
}
}
var meshData = new MeshData(verticesL.ToArray(), trianglesL.ToDictionary(v => v.Key, v => v.Value.ToArray()), normalsL.ToArray(), uvsL.ToArray(), planes);
return(meshData);
}
private static bool IsTransparent(int x, int y, int z, IVoxelContainer container, MaterialCollection matCol, LoadedVoxelMaterial mat, int?slice = null)
{
if (container == null)
{
return(true);
}
if (slice != null && slice <= y)
{
return(true);
}
var id = container.GetVoxelData(new Vector3Int(x, y, z));
if (id == mat.Id)
{
return(false);
}
return(id == 0 || matCol.GetById(id).Transparent);
}
private static void SetPlaneValue(IVoxelContainer container, Dictionary <ChunkSide, Chunk> neigbours, MaterialCollection materialCollection, bool slice, int x, int y, int z, ushort[][][,] planes, Vector3Int size)
{
var idWithHeight = container.GetVoxelData(new Vector3Int(x, y, z));
var id = (ushort)((ushort)(idWithHeight << 3) >> 3);
var height = (ushort)(8 - (ushort)(idWithHeight >> 13));
var material = materialCollection.GetById(id);
if (id != 0)
{
if (!slice)
{
if (x == size.x - 1 && IsTransparent(0, y, z, neigbours[ChunkSide.Px], materialCollection, material, height) || x != size.x - 1 && IsTransparent(x + 1, y, z, container, materialCollection, material, height)) //px
{
planes[0][x][y, z] = idWithHeight;
}
if (x == 0 && IsTransparent(size.x - 1, y, z, neigbours[ChunkSide.Nx], materialCollection, material, height) || x != 0 && IsTransparent(x - 1, y, z, container, materialCollection, material, height)) //nx
{
planes[1][x][y, z] = idWithHeight;
}
if (z == size.z - 1 && IsTransparent(x, y, 0, neigbours[ChunkSide.Pz], materialCollection, material, height) || z != size.z - 1 && IsTransparent(x, y, z + 1, container, materialCollection, material, height)) //pz
{
planes[2][z][x, y] = idWithHeight;
}
if (z == 0 && IsTransparent(x, y, size.z - 1, neigbours[ChunkSide.Nz], materialCollection, material, height) || z != 0 && IsTransparent(x, y, z - 1, container, materialCollection, material, height)) //nz
{
planes[3][z][x, y] = idWithHeight;
}
if (y == size.y - 1 && (slice || IsTransparent(x, 0, z, neigbours[ChunkSide.Py], materialCollection, material, height)) || y != size.y - 1 && (slice || IsTransparent(x, y + 1, z, container, materialCollection, material, height))) //py
{
planes[4][y][x, z] = idWithHeight;
}
if (y == 0 && IsTransparent(x, size.y - 1, z, neigbours[ChunkSide.Ny], materialCollection, material, height) || y != 0 && IsTransparent(x, y - 1, z, container, materialCollection, material, height)) //ny
{
planes[5][y][x, z] = idWithHeight;
}
}
if (y == size.y - 1 && (slice || IsTransparent(x, 0, z, neigbours[ChunkSide.Py], materialCollection, material, height)) || y != size.y - 1 && (slice || IsTransparent(x, y + 1, z, container, materialCollection, material, height))) //py
{
planes[4][y][x, z] = idWithHeight;
}
}
}
private static bool IsTransparent(int x, int y, int z, IVoxelContainer container, MaterialCollection matCol, LoadedVoxelMaterial mat, ushort height)
{
if (container == null)
{
return(true);
}
var id = container.GetVoxelData(new Vector3Int(x, y, z));
var myHeight = (ushort)(8 - (ushort)(id >> 13));
id = (ushort)((ushort)(id << 3) >> 3);
if (height != myHeight)
{
return(true);
}
if (id == mat.Id)
{
return(false);
}
return(id == 0 || matCol.GetById(id).Transparent);
}
private static ushort[][][,] InitializePlanes(IVoxelContainer container, Dictionary <ChunkSide, Chunk> neigbours, MaterialCollection materialCollection, int?slice)
{
//initialize Plane Arrays
var size = container.GetSize();
var planes = new ushort[6][][, ];
for (var side = 0; side < 6; side++)
{
planes[side] = new ushort[side < 2 ? size.x : (side < 4 ? size.z : size.y)][, ];
for (var depth = 0; depth < planes[side].Length; depth++)
{
planes[side][depth] = new ushort[side < 2 ? size.y : size.x, side == 2 || side == 3 ? size.y : size.z];
}
}
if (slice == null)
{
for (var x = 0; x < size.x; x++)
{
for (var y = 0; y < size.y; y++)
{
for (var z = 0; z < size.z; z++)
{
SetPlaneValue(container, neigbours, materialCollection, false, x, y, z, planes, size);
}
}
}
}
else
{
for (var x = 0; x < size.x; x++)
{
for (var z = 0; z < size.z; z++)
{
SetPlaneValue(container, neigbours, materialCollection, true, x, slice.Value, z, planes, size);
}
}
}
return(planes);
}
private static ushort[][][,] InitializePlanes(IVoxelContainer container, Dictionary <ChunkSide, Chunk> neigbours, MaterialCollection materialCollection, int?slice, bool topSlice, out List <Vector3> upVoxels)
{
//initialize Plane Arrays
var size = container.GetSize();
upVoxels = new List <Vector3>();
var planes = new ushort[6][][, ];
for (var side = 0; side < 6; side++)
{
planes[side] = new ushort[side < 2 ? size.x : (side < 4 ? size.z : size.y)][, ];
for (var depth = 0; depth < planes[side].Length; depth++)
{
planes[side][depth] = new ushort[side < 2 ? size.y : size.x, side == 2 || side == 3 ? size.y : size.z];
}
}
for (var x = 0; x < size.x; x++)
{
for (var y = 0; y < size.y; y++)
{
for (var z = 0; z < size.z; z++)
{
if (slice != null && (slice.Value <= y && !topSlice || slice.Value > y && topSlice))
{
continue;
}
var id = container.GetVoxelData(new Vector3Int(x, y, z));
var material = materialCollection.GetById(id);
if (id != 0)
{
if (x == size.x - 1 && IsTransparent(0, y, z, neigbours[ChunkSide.Px], materialCollection, material) || x != size.x - 1 && IsTransparent(x + 1, y, z, container, materialCollection, material)) //px
{
planes[0][x][y, z] = id;
}
if (x == 0 && IsTransparent(size.x - 1, y, z, neigbours[ChunkSide.Nx], materialCollection, material) || x != 0 && IsTransparent(x - 1, y, z, container, materialCollection, material)) //nx
{
planes[1][x][y, z] = id;
}
if (z == size.z - 1 && IsTransparent(x, y, 0, neigbours[ChunkSide.Pz], materialCollection, material) || z != size.z - 1 && IsTransparent(x, y, z + 1, container, materialCollection, material)) //pz
{
planes[2][z][x, y] = id;
}
if (z == 0 && IsTransparent(x, y, size.z - 1, neigbours[ChunkSide.Nz], materialCollection, material) || z != 0 && IsTransparent(x, y, z - 1, container, materialCollection, material)) //nz
{
planes[3][z][x, y] = id;
}
if (y == size.y - 1 && IsTransparent(x, 0, z, neigbours[ChunkSide.Py], materialCollection, material, slice.HasValue ? slice - size.y : null) || y != size.y - 1 && IsTransparent(x, y + 1, z, container, materialCollection, material, slice)) //py
{
if (y < size.y - 1 && container.GetVoxelData(new Vector3Int(x, y + 1, z)) == 0)
{
upVoxels.Add(new Vector3(x, y + 1, z));
}
planes[4][y][x, z] = id;
}
if (y == 0 && IsTransparent(x, size.y - 1, z, neigbours[ChunkSide.Ny], materialCollection, material) || y != 0 && IsTransparent(x, y - 1, z, container, materialCollection, material)) //ny
{
planes[5][y][x, z] = id;
}
}
else
{
if (y == 0 && (neigbours[ChunkSide.Ny] == null || neigbours[ChunkSide.Ny].GetVoxelData(new Vector3Int(x, size.y - 1, z)) == 0))
{
upVoxels.Add(new Vector3(x, y, z));
}
}
}
}
}
return(planes);
}
