/// <summary>
/// Reformats octree upon increase in MinSize.
/// Growing octree resets all data.
/// </summary>
private void Reformat(float newMinValue)
{
if (root.size() < newMinValue * 2f)
{
root = new OctreeContainer <T>(root.min,
root.min + new Vector3(newMinValue * 2, newMinValue * 2, newMinValue * 2), MinSize);
numComponents = 9;
numVoxels = 8;
numNonNullVoxels = 1;
volume = root.volume();
nonNullVolume = root.volume() / 8f;
}
else
{
MetadataChange change = new MetadataChange();
for (int i = 0; i < 8; i++)
{
change += root.children[i].Reformat(newMinValue);
}
updateMetadata(change);
}
}
/// <summary>
/// Constructor. Creates null-value Voxel of defaultSize around point as root of Octree.
/// <summary>
public Octree(Vector3 point, float myMinSize, float myDefaultSize)
{
minSize = myMinSize;
defaultSize = myDefaultSize;
float buffer1 = 0.2f * defaultSize;
float buffer2 = defaultSize - buffer1;
Vector3 min = new Vector3(point.x - buffer1, point.y - buffer1, point.z - buffer1);
Vector3 max = new Vector3(point.x + buffer2, point.y + buffer2, point.z + buffer2);
root = new OctreeContainer <T>(min, max, MinSize);
numComponents = 9;
numVoxels = 8;
numNonNullVoxels = 0;
volume = root.volume();
nonNullVolume = 0;
}
/// <summary>
/// Splits Voxel into 8 smaller Voxels, returns new Octree Container.
/// <summary>
public OctreeContainer <T> split(out MetadataChange change)
{
OctreeContainer <T> replacement = new OctreeContainer <T>(min, max, minSize);
/// add original point to new OctreeContainer
int childNum = replacement.whichChild(point);
var voxBounds = replacement.childBounds(childNum);
replacement.setChild(childNum, new Voxel <T>(voxBounds["min"], voxBounds["max"], minSize, point, value));
change = new MetadataChange(dComponents: 8, dVoxels: 7, dNonNullVolume: -0.875 * replacement.volume());
return(replacement);
}
