void RemoveVoxels(CancellationToken token)
{
int lastFitness = int.MinValue;
for (int i = 0; i < 100000; i++)
{
if (token.IsCancellationRequested)
{
break;
}
var actives = _grid.GetVoxels().Where(v => v.IsSkin).ToList();
var random = Drawing.Random.Next(0, actives.Count);
var active = actives[random];
active.IsActive = false;
if (_grid.GetConnectedComponents() != 1)
{
active.IsActive = true;
continue;
}
int fitness = 0;
foreach (var voxel in _grid.GetVoxels())
{
if (!voxel.IsActive)
{
continue;
}
var neighbourCount = voxel
.GetFaceNeighbours()
.Count(n => n.IsActive);
if (neighbourCount == 2)
{
fitness += 1;
}
}
if (fitness < lastFitness)
{
active.IsActive = true;
continue;
}
lastFitness = fitness;
lock (_centers)
UpdateActiveVoxels();
// Debug.Log(fitness);
}
}
IEnumerator GrowGrid()
{
int count = 100000;
int lastFitness = 0;
while (count-- > 0)
{
var skinVoxels = _grid.GetVoxels().Where(v => v.IsSkin).ToList();
if (skinVoxels.Count == 0)
{
break;
}
var index = Random.Range(0, skinVoxels.Count);
var candidate = skinVoxels[index];
candidate.IsActive = false;
int componentCount = _grid.GetConnectedComponents();
if (componentCount != 1)
{
Debug.Log("Tried to remove a voxel that disconnected the structure.");
candidate.IsActive = true;
yield return(null);
}
int fitness = 0;
foreach (var voxel in _grid.GetVoxels())
{
if (!voxel.IsActive)
{
continue;
}
int neighbourCount = voxel.GetFaceNeighbours().Count(n => n.IsActive);
if (neighbourCount == 2)
{
fitness += 1;
}
}
if (fitness < lastFitness)
{
Debug.Log("Fitness decreased.");
candidate.IsActive = true;
continue;
}
lastFitness = fitness;
UpdateCenters();
yield return(new WaitForSeconds(0.001f));
}
}
