// TODO: hilbert sorting could be done on GPU while finding exposed voxels?
public void hilbertSortVoxels()
{
int voxelCount = getShownVoxelCount();
int[] voxels = new int[voxelCount];
ShownVoxels.GetData(voxels, 0, 0, voxels.Length);
List <IntVoxel3> voxVs = new List <IntVoxel3>(voxels.Length);
foreach (int voxel in voxels)
{
voxVs.Add(new IntVoxel3(voxel, 0));
}
int bits = vGenConfig.hilbertBits;
int[] hsorted = voxels.OrderBy(vox => IntVector3.FromVoxelInt(vox).ToUint3().CoordsToFlatHilbertIndex(bits)).ToArray();
//IntVector3.FromVoxelInt(vox).ToUint3().HilbertIndexTransposed(bits).FlatHilbertIndex(bits)).ToArray();
ShownVoxels.SetData(hsorted, 0, 0, hsorted.Length);
//
//
SetLOD2HindicesCPUSide(hsorted);
}
public uint[] GetHilbertSortedVoxels()
{
int voxelCount = getShownVoxelCount();
uint[] voxels = new uint[voxelCount];
ShownVoxels.GetData(voxels, 0, 0, voxels.Length);
int bits = vGenConfig.hilbertBits;
return(voxels.OrderBy(vox => HilbertTables.XYZToHilbertIndex[IntVector3.FromVoxelInt((int)vox).ToFlatXYZIndex(vGenConfig.ChunkSize)]).ToArray());
}
void _draw(int[] voxels, float xOffset = 0f)
{
IntVector3 offset = IntVector3.right * xOffset;
IntVector3 end;
lr.positionCount = voxels.Length;
if (voxels.Length == 0)
{
print("zero voxels");
}
for (int i = 0; i < voxels.Length; ++i)
{
end = IntVector3.FromVoxelInt(voxels[i]);
lr.SetPosition(i, end + offset);
}
}
public bool TestDisplayBufferFromSolidVoxels(uint[] uis, out MapDisplay.DisplayBuffers displayBuffers)
{
if (uis.Length == 0)
{
displayBuffers = new MapDisplay.DisplayBuffers();
return(false);
}
var points = new List <IntVector3.IndexedIntVector3>(uis.Length);
for (int i = 0; i < uis.Length; ++i)
{
points.Add(new IntVector3.IndexedIntVector3()
{
index = i,
v = IntVector3.FromVoxelInt((int)uis[i])
});
}
displayBuffers = GenTestBuffers(_chunkSize, points);
return(true);
}