void PrepareVoxels()
{
//for each voxel above ISO, making sure neighboring lower voxels exist
foreach (VoxelTree t in voxelStorage.GetEnumerable())
{
Voxel v = t.Voxel;
if (v == null)
{
Debug.Log("something is wrong, VoxelTree has null voxel");
continue;
}
//clear the stored triangle data used to compute voxel normal
v.trianglesIndicies.Clear();
//create lower padding voxels as needed, so marching cubes will work correctly
if (v.value > isolevel)
{
//neighboring 3
QueryCreateVoxel(v.xID - 1, v.yID, v.zID);
QueryCreateVoxel(v.xID - 1, v.yID - 1, v.zID);
QueryCreateVoxel(v.xID, v.yID - 1, v.zID);
//lower four
QueryCreateVoxel(v.xID, v.yID, v.zID - 1);
QueryCreateVoxel(v.xID - 1, v.yID, v.zID - 1);
QueryCreateVoxel(v.xID - 1, v.yID - 1, v.zID - 1);
QueryCreateVoxel(v.xID, v.yID - 1, v.zID - 1);
}
}
}
//IEnumerator and IEnumerable require these methods.
public IEnumerable <VoxelTree> GetEnumerable()
{
if (leftTree != null)
{
foreach (VoxelTree n in leftTree.GetEnumerable())
{
yield return(n);
}
}
yield return(this);
if (rightTree != null)
{
foreach (VoxelTree n in rightTree.GetEnumerable())
{
yield return(n);
}
}
}
