// 每一列体素的合并
private void MergeColunm(object obj)
{
Vector2Int index = (Vector2Int)obj;
int x = index.x;
int z = index.y;
VoxelSpan voxelSpan = new VoxelSpan();
voxelSpan.x = x;
voxelSpan.z = z;
voxelSpan.spanList = new List <SerializableVec3>();
int voxelCount = 0;
for (int i = 0; i < _yMax; i++)
{
if (_voxelArray[x, i, z])
{
voxelCount++;
}
else
{
if (voxelCount != 0)
{
voxelSpan.spanList.Add(new Vector2((i - voxelCount) * _voxelHeight, i * _voxelHeight));
}
voxelCount = 0;
}
if (i == _yMax - 1 && voxelCount != 0)
{
voxelSpan.spanList.Add(new Vector2((i - voxelCount) * _voxelHeight, _yMax * _voxelHeight));
}
}
if (bFirstBottomToZero)
{
voxelSpan.SetFirstSpanBottomToZero();
}
_mergedVoxelsSpan[x, z] = voxelSpan;
lock (_locker)
{
complete++;
}
}
