OpenVDB 12.1.0

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RootNode< ChildType > Class Template Reference

`#include <openvdb/tree/RootNode.h>`

## Classes
struct | SameConfiguration
| SameConfiguration<OtherNodeType>::value is `true` if and only if OtherNodeType is the type of a RootNode whose ChildNodeType has the same configuration as this node's ChildNodeType. More...
struct | ValueConverter
| ValueConverter<T>::Type is the type of a RootNode having the same child hierarchy as this node but a different value type, T. More...

## Public Types
using | ChildNodeType = ChildType
using | LeafNodeType = typename ChildType::LeafNodeType
using | ValueType = typename ChildType::ValueType
using | BuildType = typename ChildType::BuildType
using | NodeChainType = typename NodeChain<RootNode, LEVEL>::Type
| NodeChainType is a list of this tree's node types, from LeafNodeType to RootNode.
using | ChildOnIter = ChildIter<RootNode, MapIter, ChildOnPred, ChildType>
using | ChildOnCIter = ChildIter<const RootNode, MapCIter, ChildOnPred, const ChildType>
using | ChildOffIter = ValueIter<RootNode, MapIter, ChildOffPred, const ValueType>
using | ChildOffCIter = ValueIter<const RootNode, MapCIter, ChildOffPred, ValueType>
using | ChildAllIter = DenseIter<RootNode, MapIter, ChildType, ValueType>
using | ChildAllCIter = DenseIter<const RootNode, MapCIter, const ChildType, const ValueType>
using | ValueOnIter = ValueIter<RootNode, MapIter, ValueOnPred, ValueType>
using | ValueOnCIter = ValueIter<const RootNode, MapCIter, ValueOnPred, const ValueType>
using | ValueOffIter = ValueIter<RootNode, MapIter, ValueOffPred, ValueType>
using | ValueOffCIter = ValueIter<const RootNode, MapCIter, ValueOffPred, const ValueType>
using | ValueAllIter = ValueIter<RootNode, MapIter, ValueAllPred, ValueType>
using | ValueAllCIter = ValueIter<const RootNode, MapCIter, ValueAllPred, const ValueType>

## Public Member Functions
| RootNode ()
| Construct a new tree with a background value of 0.
| RootNode (const ValueType &background)
| Construct a new tree with the given background value.
| RootNode (const RootNode &other)
template<typename OtherChildType>
| RootNode (const RootNode< OtherChildType > &other)
| Construct a new tree that reproduces the topology and active states of a tree of a different ValueType but the same configuration (levels, node dimensions and branching factors). Cast the other tree's values to this tree's ValueType.
template<typename OtherChildType>
| RootNode (const RootNode< OtherChildType > &other, const ValueType &background, const ValueType &foreground, TopologyCopy)
| Construct a new tree that reproduces the topology and active states of another tree (which may have a different ValueType), but not the other tree's values.
template<typename OtherChildType>
| RootNode (const RootNode< OtherChildType > &other, const ValueType &background, TopologyCopy)
| Construct a new tree that reproduces the topology and active states of another tree (which may have a different ValueType), but not the other tree's values. All tiles and voxels in the new tree are set to background regardless of their active states in the other tree.
RootNode & | operator= (const RootNode &other)
| Copy a root node of the same type as this node.
template<typename OtherChildType>
RootNode & | operator= (const RootNode< OtherChildType > &other)
| Copy a root node of the same tree configuration as this node but a different ValueType.
| ~RootNode ()
ChildOnCIter | cbeginChildOn () const
ChildOffCIter | cbeginChildOff () const
ChildAllCIter | cbeginChildAll () const
ChildOnCIter | beginChildOn () const
ChildOffCIter | beginChildOff () const
ChildAllCIter | beginChildAll () const
ChildOnIter | beginChildOn ()
ChildOffIter | beginChildOff ()
ChildAllIter | beginChildAll ()
ValueOnCIter | cbeginValueOn () const
ValueOffCIter | cbeginValueOff () const
ValueAllCIter | cbeginValueAll () const
ValueOnCIter | beginValueOn () const
ValueOffCIter | beginValueOff () const
ValueAllCIter | beginValueAll () const
ValueOnIter | beginValueOn ()
ValueOffIter | beginValueOff ()
ValueAllIter | beginValueAll ()
Index64 | memUsage () const
| Return the total amount of memory in bytes occupied by this node and its children.
void | evalActiveBoundingBox (CoordBBox &bbox, bool visitVoxels=true) const
| Expand the specified bbox so it includes the active tiles of this root node as well as all the active values in its child nodes. If visitVoxels is false LeafNodes will be approximated as dense, i.e. with all voxels active. Else the individual active voxels are visited to produce a tight bbox.
Index32 | transientData () const
| Return the transient data value.
void | setTransientData (Index32 transientData)
| Set the transient data value.
void | setBackground (const ValueType &value, bool updateChildNodes)
| Change inactive tiles or voxels with a value equal to +/- the old background to the specified value (with the same sign). Active values are unchanged.
const ValueType & | background () const
| Return this node's background value.
bool | isBackgroundTile (const Tile &) const
| Return `true` if the given tile is inactive and has the background value.
bool | isBackgroundTile (const MapIter &) const
| Return `true` if the given iterator points to an inactive tile with the background value.
bool | isBackgroundTile (const MapCIter &) const
size_t | numBackgroundTiles () const
| Return the number of background tiles.
size_t | eraseBackgroundTiles ()
| Remove all background tiles.
void | clear ()
bool | empty () const
| Return `true` if this node's table is either empty or contains only background tiles.
bool | expand (const Coord &xyz)
| Expand this node's table so that (x, y, z) is included in the index range.
Index | getTableSize () const
| Return the number of entries in this node's table.
Index | getWidth () const
Index | getHeight () const
Index | getDepth () const
Coord | getMinIndex () const
| Return the smallest index of the current tree.
Coord | getMaxIndex () const
| Return the largest index of the current tree.
void | getIndexRange (CoordBBox &bbox) const
| Return the current index range. Both min and max are inclusive.
template<typename OtherChildType>
bool | hasSameTopology (const RootNode< OtherChildType > &other) const
| Return `true` if the given tree has the same node and active value topology as this tree (but possibly a different `ValueType`).
Index64 | leafCount () const
Index64 | nonLeafCount () const
Index32 | childCount () const
Index32 | tileCount () const
Index32 | activeTileCount () const
Index32 | inactiveTileCount () const
Index64 | onVoxelCount () const
Index64 | offVoxelCount () const
Index64 | onLeafVoxelCount () const
Index64 | offLeafVoxelCount () const
Index64 | onTileCount () const
void | nodeCount (std::vector< Index64 > &vec) const
void | nodeCount (std::vector< Index32 > &vec) const
bool | isValueOn (const Coord &xyz) const
bool | hasActiveTiles () const
| Return `true` if this root node, or any of its child nodes, have active tiles.
const ValueType & | getValue (const Coord &xyz) const
bool | probeValue (const Coord &xyz, ValueType &value) const
int | getValueDepth (const Coord &xyz) const
| Return the tree depth (0 = root) at which the value of voxel (x, y, z) resides.
void | setActiveState (const Coord &xyz, bool on)
| Set the active state of the voxel at the given coordinates but don't change its value.
void | setValueOnly (const Coord &xyz, const ValueType &value)
| Set the value of the voxel at the given coordinates but don't change its active state.
void | setValueOn (const Coord &xyz, const ValueType &value)
| Set the value of the voxel at the given coordinates and mark the voxel as active.
void | setValueOff (const Coord &xyz)
| Mark the voxel at the given coordinates as inactive but don't change its value.
void | setValueOff (const Coord &xyz, const ValueType &value)
| Set the value of the voxel at the given coordinates and mark the voxel as inactive.
template<typename ModifyOp>
void | modifyValue (const Coord &xyz, const ModifyOp &op)
| Apply a functor to the value of the voxel at the given coordinates and mark the voxel as active.
template<typename ModifyOp>
void | modifyValueAndActiveState (const Coord &xyz, const ModifyOp &op)
| Apply a functor to the voxel at the given coordinates.
void | fill (const CoordBBox &bbox, const ValueType &value, bool active=true)
| Set all voxels within a given axis-aligned box to a constant value.
void | sparseFill (const CoordBBox &bbox, const ValueType &value, bool active=true)
void | denseFill (const CoordBBox &bbox, const ValueType &value, bool active=true)
| Set all voxels within a given axis-aligned box to a constant value and ensure that those voxels are all represented at the leaf level.
void | voxelizeActiveTiles (bool threaded=true)
| Densify active tiles, i.e., replace them with leaf-level active voxels.
template<typename DenseT>
void | copyToDense (const CoordBBox &bbox, DenseT &dense) const
| Copy into a dense grid the values of all voxels, both active and inactive, that intersect a given bounding box.
bool | writeTopology (std::ostream &, bool toHalf=false) const
bool | readTopology (std::istream &, bool fromHalf=false)
void | writeBuffers (std::ostream &, bool toHalf=false) const
void | readBuffers (std::istream &, bool fromHalf=false)
void | readBuffers (std::istream &, const CoordBBox &, bool fromHalf=false)
template<typename AccessorT>
const ValueType & | getValueAndCache (const Coord &xyz, AccessorT &) const
template<typename AccessorT>
bool | isValueOnAndCache (const Coord &xyz, AccessorT &) const
template<typename AccessorT>
void | setValueAndCache (const Coord &xyz, const ValueType &value, AccessorT &)
template<typename AccessorT>
void | setValueOnlyAndCache (const Coord &xyz, const ValueType &value, AccessorT &)
template<typename ModifyOp, typename AccessorT>
void | modifyValueAndCache (const Coord &xyz, const ModifyOp &op, AccessorT &)
template<typename ModifyOp, typename AccessorT>
void | modifyValueAndActiveStateAndCache (const Coord &xyz, const ModifyOp &op, AccessorT &)
template<typename AccessorT>
void | setValueOffAndCache (const Coord &xyz, const ValueType &value, AccessorT &)
template<typename AccessorT>
void | setActiveStateAndCache (const Coord &xyz, bool on, AccessorT &)
template<typename AccessorT>
bool | probeValueAndCache (const Coord &xyz, ValueType &value, AccessorT &) const
template<typename AccessorT>
int | getValueDepthAndCache (const Coord &xyz, AccessorT &) const
void | clip (const CoordBBox &)
| Set all voxels that lie outside the given axis-aligned box to the background.
void | prune (const ValueType &tolerance=zeroVal< ValueType >())
| Reduce the memory footprint of this tree by replacing with tiles any nodes whose values are all the same (optionally to within a tolerance) and have the same active state.
void | addLeaf (LeafNodeType *leaf)
| Add the given leaf node to this tree, creating a new branch if necessary. If a leaf node with the same origin already exists, replace it.
template<typename AccessorT>
void | addLeafAndCache (LeafNodeType *leaf, AccessorT &)
| Same as addLeaf() but, if necessary, update the given accessor with pointers to the nodes along the path from the root node to the node containing the coordinate.
template<typename NodeT>
NodeT * | stealNode (const Coord &xyz, const ValueType &value, bool state)
| Return a pointer to the node of type `NodeT` that contains voxel (x, y, z) and replace it with a tile of the specified value and state. If no such node exists, leave the tree unchanged and return `nullptr`.
bool | addChild (ChildType *child)
| Add the given child node at the root level. If a child node with the same origin already exists, delete the old node and add the new node in its place (i.e. ownership of the new child node is transferred to this RootNode).
void | addTile (const Coord &xyz, const ValueType &value, bool state)
| Add a tile containing voxel (x, y, z) at the root level, deleting the existing branch if necessary.
void | addTile (Index level, const Coord &xyz, const ValueType &value, bool state)
| Add a tile containing voxel (x, y, z) at the specified tree level, creating a new branch if necessary. Delete any existing lower-level nodes that contain (x, y, z).
template<typename AccessorT>
void | addTileAndCache (Index level, const Coord &xyz, const ValueType &, bool state, AccessorT &)
| Same as addTile() but, if necessary, update the given accessor with pointers to the nodes along the path from the root node to the node containing the coordinate.
bool | deleteChildOrTile (const Coord &xyz)
| Delete any child or tile containing voxel (x, y, z) at the root level. Do nothing if no child or tile was found.
LeafNodeType * | touchLeaf (const Coord &xyz)
| Return a pointer to the leaf node that contains voxel (x, y, z). If no such node exists, create one that preserves the values and active states of all voxels.
template<typename AccessorT>
LeafNodeType * | touchLeafAndCache (const Coord &xyz, AccessorT &acc)
| Same as touchLeaf() but, if necessary, update the given accessor with pointers to the nodes along the path from the root node to the node containing the coordinate.
template<typename NodeT>
NodeT * | probeNode (const Coord &xyz)
| Return a pointer to the node that contains voxel (x, y, z). If no such node exists, return `nullptr`.
template<typename NodeT>
const NodeT * | probeNode (const Coord &xyz) const
template<typename NodeT>
const NodeT * | probeConstNode (const Coord &xyz) const
bool | probe (const Coord &xyz, ChildNodeType *&child, ValueType &value, bool &active)
| Return a pointer to the root child node that contains voxel (x, y, z). If no such node exists, query and set the tile value and active status and return `nullptr`.
bool | probeConst (const Coord &xyz, const ChildNodeType *&child, ValueType &value, bool &active) const
bool | probe (const Coord &xyz, const ChildNodeType *&child, ValueType &value, bool &active) const
template<typename NodeT, typename AccessorT>
NodeT * | probeNodeAndCache (const Coord &xyz, AccessorT &acc)
| Same as probeNode() but, if necessary, update the given accessor with pointers to the nodes along the path from the root node to the node containing the coordinate.
template<typename NodeT, typename AccessorT>
const NodeT * | probeConstNodeAndCache (const Coord &xyz, AccessorT &acc) const
ChildNodeType * | probeChild (const Coord &xyz)
| Return a pointer to the root child node that contains voxel (x, y, z). If no such node exists, return `nullptr`.
const ChildNodeType * | probeConstChild (const Coord &xyz) const
const ChildNodeType * | probeChild (const Coord &xyz) const
LeafNodeType * | probeLeaf (const Coord &xyz)
| Return a pointer to the leaf node that contains voxel (x, y, z). If no such node exists, return `nullptr`.
const LeafNodeType * | probeConstLeaf (const Coord &xyz) const
const LeafNodeType * | probeLeaf (const Coord &xyz) const
template<typename AccessorT>
LeafNodeType * | probeLeafAndCache (const Coord &xyz, AccessorT &acc)
| Same as probeLeaf() but, if necessary, update the given accessor with pointers to the nodes along the path from the root node to the node containing the coordinate.
template<typename AccessorT>
const LeafNodeType * | probeConstLeafAndCache (const Coord &xyz, AccessorT &acc) const
template<typename AccessorT>
const LeafNodeType * | probeLeafAndCache (const Coord &xyz, AccessorT &acc) const
const ValueType & | getTileValueUnsafe (const Coord &xyz) const
| Return the tile value at the given coordinate.
bool | getTileValueUnsafe (const Coord &xyz, ValueType &value) const
| Return the tile value and active state at the given coordinate.
ChildNodeType * | getChildUnsafe (const Coord &xyz)
| Return the child node at the given coordinate.
const ChildNodeType * | getConstChildUnsafe (const Coord &xyz) const
| Return the child node at the given coordinate.
const ChildNodeType * | getChildUnsafe (const Coord &xyz) const
| Return the child node at the given coordinate.
template<typename ArrayT>
void | getNodes (ArrayT &array)
| Adds all nodes of a certain type to a container with the following API:
template<typename ArrayT>
void | getNodes (ArrayT &array) const
template<typename ArrayT>
void | stealNodes (ArrayT &array, const ValueType &value, bool state)
| Steals all nodes of a certain type from the tree and adds them to a container with the following API:
template<typename ArrayT>
void | stealNodes (ArrayT &array)
template<MergePolicy Policy>
void | merge (RootNode &other)
| Efficiently merge another tree into this tree using one of several schemes.
template<typename OtherChildType>
void | topologyUnion (const RootNode< OtherChildType > &other, const bool preserveTiles=false)
| Union this tree's set of active values with the active values of the other tree, whose `ValueType` may be different.
template<typename OtherChildType>
void | topologyIntersection (const RootNode< OtherChildType > &other)
| Intersects this tree's set of active values with the active values of the other tree, whose `ValueType` may be different.
template<typename OtherChildType>
void | topologyDifference (const RootNode< OtherChildType > &other)
| Difference this tree's set of active values with the active values of the other tree, whose `ValueType` may be different. So a resulting voxel will be active only if the original voxel is active in this tree and inactive in the other tree.
template<typename CombineOp>
void | combine (RootNode &other, CombineOp &, bool prune=false)
template<typename CombineOp, typename OtherRootNode>
void | combine2 (const RootNode &other0, const OtherRootNode &other1, CombineOp &op, bool prune=false)
const Coord & | origin () const
| Return the grid index coordinates of this node's local origin.
void | setOrigin (const Coord &origin)
| change the origin on this root node
Coord | coordToKey (const Coord &xyz) const
| Return a MapType key for the given coordinates, offset by the mOrigin.
bool | hasKey (const Coord &key) const
| Return `true` if this node's mTable contains the given key.
template<typename OtherChildType>
RootNode< ChildT > & | operator= (const RootNode< OtherChildType > &other)
template<typename AccessorT>
const ChildT::ValueType & | getValueAndCache (const Coord &xyz, AccessorT &acc) const
template<typename AccessorT>
ChildT::LeafNodeType * | touchLeafAndCache (const Coord &xyz, AccessorT &acc)
template<typename AccessorT>
ChildT::LeafNodeType * | probeLeafAndCache (const Coord &xyz, AccessorT &acc)
template<typename AccessorT>
const ChildT::LeafNodeType * | probeConstLeafAndCache (const Coord &xyz, AccessorT &acc) const
template<typename AccessorT>
const ChildT::LeafNodeType * | probeLeafAndCache (const Coord &xyz, AccessorT &acc) const

## Static Public Member Functions
static CoordBBox | getNodeBoundingBox ()
| Return the bounding box of this RootNode, i.e., an infinite bounding box.
static Index | getLevel ()
static void | getNodeLog2Dims (std::vector< Index > &dims)
static Index | getChildDim ()
template<typename OtherChildType>
static bool | hasSameConfiguration (const RootNode< OtherChildType > &other)
| Return `false` if the other node's dimensions don't match this node's.
template<typename OtherChildType>
static bool | hasCompatibleValueType (const RootNode< OtherChildType > &other)

## Static Public Attributes
static const Index | LEVEL = 1 + ChildType::LEVEL

## Friends
template<typename>
class | RootNode
template<typename, typename, bool>
struct | RootNodeCopyHelper
template<typename, typename, typename, bool>
struct | RootNodeCombineHelper

## Member Typedef Documentation

## ◆ BuildType

template<typename ChildType>

using BuildType = typename ChildType::BuildType

## ◆ ChildAllCIter

template<typename ChildType>

using ChildAllCIter = DenseIter<const RootNode, MapCIter, const ChildType, const ValueType>

## ◆ ChildAllIter

template<typename ChildType>

using ChildAllIter = DenseIter<RootNode, MapIter, ChildType, ValueType>

## ◆ ChildNodeType

template<typename ChildType>

using ChildNodeType = ChildType

## ◆ ChildOffCIter

template<typename ChildType>

using ChildOffCIter = ValueIter<const RootNode, MapCIter, ChildOffPred, ValueType>

## ◆ ChildOffIter

template<typename ChildType>

using ChildOffIter = ValueIter<RootNode, MapIter, ChildOffPred, const ValueType>

## ◆ ChildOnCIter

template<typename ChildType>

using ChildOnCIter = ChildIter<const RootNode, MapCIter, ChildOnPred, const ChildType>

## ◆ ChildOnIter

template<typename ChildType>

using ChildOnIter = ChildIter<RootNode, MapIter, ChildOnPred, ChildType>

## ◆ LeafNodeType

template<typename ChildType>

using LeafNodeType = typename ChildType::LeafNodeType

## ◆ NodeChainType

template<typename ChildType>

using NodeChainType = typename NodeChain<RootNode, LEVEL>::Type

NodeChainType is a list of this tree's node types, from LeafNodeType to RootNode.

## ◆ ValueAllCIter

template<typename ChildType>

using ValueAllCIter = ValueIter<const RootNode, MapCIter, ValueAllPred, const ValueType>

## ◆ ValueAllIter

template<typename ChildType>

using ValueAllIter = ValueIter<RootNode, MapIter, ValueAllPred, ValueType>

## ◆ ValueOffCIter

template<typename ChildType>

using ValueOffCIter = ValueIter<const RootNode, MapCIter, ValueOffPred, const ValueType>

## ◆ ValueOffIter

template<typename ChildType>

using ValueOffIter = ValueIter<RootNode, MapIter, ValueOffPred, ValueType>

## ◆ ValueOnCIter

template<typename ChildType>

using ValueOnCIter = ValueIter<const RootNode, MapCIter, ValueOnPred, const ValueType>

## ◆ ValueOnIter

template<typename ChildType>

using ValueOnIter = ValueIter<RootNode, MapIter, ValueOnPred, ValueType>

## ◆ ValueType

template<typename ChildType>

using ValueType = typename ChildType::ValueType

## Constructor & Destructor Documentation

## ◆ RootNode() [1/6]

template<typename ChildT>

RootNode | ( |  | ) |
| inline

Construct a new tree with a background value of 0.

## ◆ RootNode() [2/6]

template<typename ChildT>

RootNode | ( | const ValueType & | background | ) |
| inline explicit

Construct a new tree with the given background value.

## ◆ RootNode() [3/6]

template<typename ChildType>

RootNode | ( | const RootNode< ChildType > & | other | ) |
| inline

## ◆ RootNode() [4/6]

template<typename ChildType>
template<typename OtherChildType>

RootNode | ( | const RootNode< OtherChildType > & | other | ) |
| inline explicit

Construct a new tree that reproduces the topology and active states of a tree of a different ValueType but the same configuration (levels, node dimensions and branching factors). Cast the other tree's values to this tree's ValueType.

Exceptions

  TypeError | if the other tree's configuration doesn't match this tree's or if this tree's ValueType is not constructible from the other tree's ValueType.

## ◆ RootNode() [5/6]

template<typename ChildT>
template<typename OtherChildType>

RootNode | ( | const RootNode< OtherChildType > & | other,
|  | const ValueType & | background,
|  | const ValueType & | foreground,
|  | TopologyCopy | )
| inline

Construct a new tree that reproduces the topology and active states of another tree (which may have a different ValueType), but not the other tree's values.

All tiles and voxels that are active in the other tree are set to foreground in the new tree, and all inactive tiles and voxels are set to background.

Parameters

  other | the root node of a tree having (possibly) a different ValueType
  background | the value to which inactive tiles and voxels are initialized
  foreground | the value to which active tiles and voxels are initialized

Exceptions

  TypeError | if the other tree's configuration doesn't match this tree's.

## ◆ RootNode() [6/6]

template<typename ChildT>
template<typename OtherChildType>

RootNode | ( | const RootNode< OtherChildType > & | other,
|  | const ValueType & | background,
|  | TopologyCopy | )
| inline

Construct a new tree that reproduces the topology and active states of another tree (which may have a different ValueType), but not the other tree's values. All tiles and voxels in the new tree are set to background regardless of their active states in the other tree.

Parameters

  other | the root node of a tree having (possibly) a different ValueType
  background | the value to which inactive tiles and voxels are initialized

Note
  This copy constructor is generally faster than the one that takes both a foreground and a background value. Its main application is in multithreaded operations where the topology of the output tree exactly matches the input tree.

Exceptions

  TypeError | if the other tree's configuration doesn't match this tree's.

## ◆ ~RootNode()

template<typename ChildType>

~RootNode | ( |  | ) |
| inline

## Member Function Documentation

## ◆ activeTileCount()

template<typename ChildT>

Index32 activeTileCount | ( |  | ) | const
| inline

## ◆ addChild()

template<typename ChildType>

bool addChild | ( | ChildType * | child | ) |
| inline

Add the given child node at the root level. If a child node with the same origin already exists, delete the old node and add the new node in its place (i.e. ownership of the new child node is transferred to this RootNode).

Returns
  `true` (for consistency with InternalNode::addChild)

## ◆ addLeaf()

template<typename ChildT>

void addLeaf | ( | LeafNodeType * | leaf | ) |
| inline

Add the given leaf node to this tree, creating a new branch if necessary. If a leaf node with the same origin already exists, replace it.

## ◆ addLeafAndCache()

template<typename ChildT>
template<typename AccessorT>

void addLeafAndCache | ( | LeafNodeType * | leaf,
|  | AccessorT & | acc )
| inline

Same as addLeaf() but, if necessary, update the given accessor with pointers to the nodes along the path from the root node to the node containing the coordinate.

## ◆ addTile() [1/2]

template<typename ChildT>

void addTile | ( | const Coord & | xyz,
|  | const ValueType & | value,
|  | bool | state )
| inline

Add a tile containing voxel (x, y, z) at the root level, deleting the existing branch if necessary.

## ◆ addTile() [2/2]

template<typename ChildT>

void addTile | ( | Index | level,
|  | const Coord & | xyz,
|  | const ValueType & | value,
|  | bool | state )
| inline

Add a tile containing voxel (x, y, z) at the specified tree level, creating a new branch if necessary. Delete any existing lower-level nodes that contain (x, y, z).

## ◆ addTileAndCache()

template<typename ChildT>
template<typename AccessorT>

void addTileAndCache | ( | Index | level,
|  | const Coord & | xyz,
|  | const ValueType & | value,
|  | bool | state,
|  | AccessorT & | acc )
| inline

Same as addTile() but, if necessary, update the given accessor with pointers to the nodes along the path from the root node to the node containing the coordinate.

## ◆ background()

template<typename ChildType>

const ValueType & background | ( |  | ) | const
| inline

Return this node's background value.

## ◆ beginChildAll() [1/2]

template<typename ChildType>

ChildAllIter beginChildAll | ( |  | ) |
| inline

## ◆ beginChildAll() [2/2]

template<typename ChildType>

ChildAllCIter beginChildAll | ( |  | ) | const
| inline

## ◆ beginChildOff() [1/2]

template<typename ChildType>

ChildOffIter beginChildOff | ( |  | ) |
| inline

## ◆ beginChildOff() [2/2]

template<typename ChildType>

ChildOffCIter beginChildOff | ( |  | ) | const
| inline

## ◆ beginChildOn() [1/2]

template<typename ChildType>

ChildOnIter beginChildOn | ( |  | ) |
| inline

## ◆ beginChildOn() [2/2]

template<typename ChildType>

ChildOnCIter beginChildOn | ( |  | ) | const
| inline

## ◆ beginValueAll() [1/2]

template<typename ChildType>

ValueAllIter beginValueAll | ( |  | ) |
| inline

## ◆ beginValueAll() [2/2]

template<typename ChildType>

ValueAllCIter beginValueAll | ( |  | ) | const
| inline

## ◆ beginValueOff() [1/2]

template<typename ChildType>

ValueOffIter beginValueOff | ( |  | ) |
| inline

## ◆ beginValueOff() [2/2]

template<typename ChildType>

ValueOffCIter beginValueOff | ( |  | ) | const
| inline

## ◆ beginValueOn() [1/2]

template<typename ChildType>

ValueOnIter beginValueOn | ( |  | ) |
| inline

## ◆ beginValueOn() [2/2]

template<typename ChildType>

ValueOnCIter beginValueOn | ( |  | ) | const
| inline

## ◆ cbeginChildAll()

template<typename ChildType>

ChildAllCIter cbeginChildAll | ( |  | ) | const
| inline

## ◆ cbeginChildOff()

template<typename ChildType>

ChildOffCIter cbeginChildOff | ( |  | ) | const
| inline

## ◆ cbeginChildOn()

template<typename ChildType>

ChildOnCIter cbeginChildOn | ( |  | ) | const
| inline

## ◆ cbeginValueAll()

template<typename ChildType>

ValueAllCIter cbeginValueAll | ( |  | ) | const
| inline

## ◆ cbeginValueOff()

template<typename ChildType>

ValueOffCIter cbeginValueOff | ( |  | ) | const
| inline

## ◆ cbeginValueOn()

template<typename ChildType>

ValueOnCIter cbeginValueOn | ( |  | ) | const
| inline

## ◆ childCount()

template<typename ChildT>

Index32 childCount | ( |  | ) | const
| inline

## ◆ clear()

template<typename ChildT>

void clear | ( |  | ) |
| inline

## ◆ clip()

template<typename ChildT>

void clip | ( | const CoordBBox & | clipBBox | ) |
| inline

Set all voxels that lie outside the given axis-aligned box to the background.

## ◆ combine()

template<typename ChildT>
template<typename CombineOp>

void combine | ( | RootNode< ChildType > & | other,
|  | CombineOp & | op,
|  | bool | prune = false )
| inline

## ◆ combine2()

template<typename ChildT>
template<typename CombineOp, typename OtherRootNode>

void combine2 | ( | const RootNode< ChildType > & | other0,
|  | const OtherRootNode< ChildType > & | other1,
|  | CombineOp & | op,
|  | bool | prune = false )
| inline

## ◆ coordToKey()

template<typename ChildType>

Coord coordToKey | ( | const Coord & | xyz | ) | const
| inline

Return a MapType key for the given coordinates, offset by the mOrigin.

## ◆ copyToDense()

template<typename ChildT>
template<typename DenseT>

void copyToDense | ( | const CoordBBox & | bbox,
|  | DenseT & | dense ) const
| inline

Copy into a dense grid the values of all voxels, both active and inactive, that intersect a given bounding box.

Parameters

  bbox | inclusive bounding box of the voxels to be copied into the dense grid
  dense | dense grid with a stride in z of one (see tools::Dense in tools/Dense.h for the required API)

## ◆ deleteChildOrTile()

template<typename ChildT>

bool deleteChildOrTile | ( | const Coord & | xyz | ) |
| inline

Delete any child or tile containing voxel (x, y, z) at the root level. Do nothing if no child or tile was found.

Warning
  This method will invalidate any existing RootNode iterators.

Returns
  `true` if child or tile was deleted

## ◆ denseFill()

template<typename ChildT>

void denseFill | ( | const CoordBBox & | bbox,
|  | const ValueType & | value,
|  | bool | active = true )
| inline

Set all voxels within a given axis-aligned box to a constant value and ensure that those voxels are all represented at the leaf level.

Parameters

  bbox | inclusive coordinates of opposite corners of an axis-aligned box.
  value | the value to which to set voxels within the box.
  active | if true, mark voxels within the box as active, otherwise mark them as inactive.

See also
  voxelizeActiveTiles()

## ◆ empty()

template<typename ChildType>

bool empty | ( |  | ) | const
| inline

Return `true` if this node's table is either empty or contains only background tiles.

## ◆ eraseBackgroundTiles()

template<typename ChildT>

size_t eraseBackgroundTiles | ( |  | ) |
| inline

Remove all background tiles.

Returns
  the number of tiles removed.

## ◆ evalActiveBoundingBox()

template<typename ChildT>

void evalActiveBoundingBox | ( | CoordBBox & | bbox,
|  | bool | visitVoxels = true ) const
| inline

Expand the specified bbox so it includes the active tiles of this root node as well as all the active values in its child nodes. If visitVoxels is false LeafNodes will be approximated as dense, i.e. with all voxels active. Else the individual active voxels are visited to produce a tight bbox.

## ◆ expand()

template<typename ChildT>

bool expand | ( | const Coord & | xyz | ) |
| inline

Expand this node's table so that (x, y, z) is included in the index range.

Returns
  `true` if an expansion was performed (i.e., if (x, y, z) was not already included in the index range).

## ◆ fill()

template<typename ChildT>

void fill | ( | const CoordBBox & | bbox,
|  | const ValueType & | value,
|  | bool | active = true )
| inline

Set all voxels within a given axis-aligned box to a constant value.

Parameters

  bbox | inclusive coordinates of opposite corners of an axis-aligned box
  value | the value to which to set voxels within the box
  active | if true, mark voxels within the box as active, otherwise mark them as inactive

Note
  This operation generates a sparse, but not always optimally sparse, representation of the filled box. Follow fill operations with a prune() operation for optimal sparseness.

## ◆ getChildDim()

template<typename ChildType>

Index getChildDim | ( |  | ) |
| inline static

## ◆ getChildUnsafe() [1/2]

template<typename ChildT>

ChildT * getChildUnsafe | ( | const Coord & | xyz | ) |
| inline

Return the child node at the given coordinate.

Note
  Use beginChildAll() for a safer alternative.

Warning
  This method should only be used by experts seeking low-level optimizations.

## ◆ getChildUnsafe() [2/2]

template<typename ChildT>

const ChildT * getChildUnsafe | ( | const Coord & | xyz | ) | const
| inline

Return the child node at the given coordinate.

Note
  Use cbeginChildAll() for a safer alternative.

Warning
  This method should only be used by experts seeking low-level optimizations.

## ◆ getConstChildUnsafe()

template<typename ChildT>

const ChildT * getConstChildUnsafe | ( | const Coord & | xyz | ) | const
| inline

Return the child node at the given coordinate.

Note
  Use cbeginChildAll() for a safer alternative.

Warning
  This method should only be used by experts seeking low-level optimizations.

## ◆ getDepth()

template<typename ChildType>

Index getDepth | ( |  | ) | const
| inline

## ◆ getHeight()

template<typename ChildType>

Index getHeight | ( |  | ) | const
| inline

## ◆ getIndexRange()

template<typename ChildT>

void getIndexRange | ( | CoordBBox & | bbox | ) | const
| inline

Return the current index range. Both min and max are inclusive.

## ◆ getLevel()

template<typename ChildType>

Index getLevel | ( |  | ) |
| inline static

## ◆ getMaxIndex()

template<typename ChildT>

Coord getMaxIndex | ( |  | ) | const
| inline

Return the largest index of the current tree.

## ◆ getMinIndex()

template<typename ChildT>

Coord getMinIndex | ( |  | ) | const
| inline

Return the smallest index of the current tree.

## ◆ getNodeBoundingBox()

template<typename ChildType>

CoordBBox getNodeBoundingBox | ( |  | ) |
| inline static

Return the bounding box of this RootNode, i.e., an infinite bounding box.

## ◆ getNodeLog2Dims()

template<typename ChildT>

void getNodeLog2Dims | ( | std::vector< Index > & | dims | ) |
| inline static

## ◆ getNodes() [1/2]

template<typename ChildT>
template<typename ArrayT>

void getNodes | ( | ArrayT & | array | ) |
| inline

Adds all nodes of a certain type to a container with the following API:

struct ArrayT {
using value_type = ...;// defines the type of nodes to be added to the array
void push_back(value_type nodePtr);// method that add nodes to the array
};

An example of a wrapper around a c-style array is:

struct MyArray {
using value_type = LeafType*;
value_type* ptr;
MyArray(value_type* array) : ptr(array) {}
void push_back(value_type leaf) { *ptr++ = leaf; }
};

An example that constructs a list of pointer to all leaf nodes is:

std::vector<const LeafNodeType*> array;//most std contains have the required API
array.reserve(tree.leafCount());//this is a fast preallocation.
tree.getNodes(array);
openvdb::v12_1::tree
Definition PointDataGrid.h:170

## ◆ getNodes() [2/2]

template<typename ChildT>
template<typename ArrayT>

void getNodes | ( | ArrayT & | array | ) | const
| inline

## ◆ getTableSize()

template<typename ChildType>

Index getTableSize | ( |  | ) | const
| inline

Return the number of entries in this node's table.

## ◆ getTileValueUnsafe() [1/2]

template<typename ChildT>

const ChildT::ValueType & getTileValueUnsafe | ( | const Coord & | xyz | ) | const
| inline

Return the tile value at the given coordinate.

Note
  Use cbeginValueAll() for a safer alternative.

Warning
  This method should only be used by experts seeking low-level optimizations.

## ◆ getTileValueUnsafe() [2/2]

template<typename ChildT>

bool getTileValueUnsafe | ( | const Coord & | xyz,
|  | ValueType & | value ) const
| inline

Return the tile value and active state at the given coordinate.

Note
  Use cbeginValueAll() for a safer alternative.

Warning
  This method should only be used by experts seeking low-level optimizations.

## ◆ getValue()

template<typename ChildT>

const ChildT::ValueType & getValue | ( | const Coord & | xyz | ) | const
| inline

## ◆ getValueAndCache() [1/2]

template<typename ChildType>
template<typename AccessorT>

const ValueType & getValueAndCache | ( | const Coord & | xyz,
|  | AccessorT & | ) const

Return the value of the voxel at the given coordinates and, if necessary, update the accessor with pointers to the nodes along the path from the root node to the node containing the voxel.

Note
  Used internally by ValueAccessor.

## ◆ getValueAndCache() [2/2]

template<typename ChildType>
template<typename AccessorT>

const ChildT::ValueType & getValueAndCache | ( | const Coord & | xyz,
|  | AccessorT & | acc ) const
| inline

## ◆ getValueDepth()

template<typename ChildT>

int getValueDepth | ( | const Coord & | xyz | ) | const
| inline

Return the tree depth (0 = root) at which the value of voxel (x, y, z) resides.

If (x, y, z) isn't explicitly represented in the tree (i.e., it is implicitly a background voxel), return -1.

## ◆ getValueDepthAndCache()

template<typename ChildT>
template<typename AccessorT>

int getValueDepthAndCache | ( | const Coord & | xyz,
|  | AccessorT & | acc ) const
| inline

Return the tree depth (0 = root) at which the value of voxel (x, y, z) resides. If (x, y, z) isn't explicitly represented in the tree (i.e., it is implicitly a background voxel), return -1. If necessary, update the accessor with pointers to the nodes along the path from the root node to the node containing the voxel.

Note
  Used internally by ValueAccessor.

## ◆ getWidth()

template<typename ChildType>

Index getWidth | ( |  | ) | const
| inline

## ◆ hasActiveTiles()

template<typename ChildT>

bool hasActiveTiles | ( |  | ) | const
| inline

Return `true` if this root node, or any of its child nodes, have active tiles.

## ◆ hasCompatibleValueType()

template<typename ChildT>
template<typename OtherChildType>

bool hasCompatibleValueType | ( | const RootNode< OtherChildType > & | other | ) |
| inline static

Return `true` if values of the other node's ValueType can be converted to values of this node's ValueType.

## ◆ hasKey()

template<typename ChildType>

bool hasKey | ( | const Coord & | key | ) | const
| inline

Return `true` if this node's mTable contains the given key.

## ◆ hasSameConfiguration()

template<typename ChildT>
template<typename OtherChildType>

bool hasSameConfiguration | ( | const RootNode< OtherChildType > & | other | ) |
| inline static

Return `false` if the other node's dimensions don't match this node's.

## ◆ hasSameTopology()

template<typename ChildT>
template<typename OtherChildType>

bool hasSameTopology | ( | const RootNode< OtherChildType > & | other | ) | const
| inline

Return `true` if the given tree has the same node and active value topology as this tree (but possibly a different `ValueType`).

## ◆ inactiveTileCount()

template<typename ChildT>

Index32 inactiveTileCount | ( |  | ) | const
| inline

## ◆ isBackgroundTile() [1/3]

template<typename ChildT>

bool isBackgroundTile | ( | const MapCIter & | iter | ) | const
| inline

## ◆ isBackgroundTile() [2/3]

template<typename ChildT>

bool isBackgroundTile | ( | const MapIter & | iter | ) | const
| inline

Return `true` if the given iterator points to an inactive tile with the background value.

## ◆ isBackgroundTile() [3/3]

template<typename ChildT>

bool isBackgroundTile | ( | const Tile & | tile | ) | const
| inline

Return `true` if the given tile is inactive and has the background value.

## ◆ isValueOn()

template<typename ChildT>

bool isValueOn | ( | const Coord & | xyz | ) | const
| inline

## ◆ isValueOnAndCache()

template<typename ChildT>
template<typename AccessorT>

bool isValueOnAndCache | ( | const Coord & | xyz,
|  | AccessorT & | acc ) const
| inline

Return `true` if the voxel at the given coordinates is active and, if necessary, update the accessor with pointers to the nodes along the path from the root node to the node containing the voxel.

Note
  Used internally by ValueAccessor.

## ◆ leafCount()

template<typename ChildT>

Index64 leafCount | ( |  | ) | const
| inline

## ◆ memUsage()

template<typename ChildT>

Index64 memUsage | ( |  | ) | const
| inline

Return the total amount of memory in bytes occupied by this node and its children.

## ◆ merge()

template<typename ChildT>
template<MergePolicy Policy>

void merge | ( | RootNode< ChildType > & | other | ) |
| inline

Efficiently merge another tree into this tree using one of several schemes.

This operation is primarily intended to combine trees that are mostly non-overlapping (for example, intermediate trees from computations that are parallelized across disjoint regions of space).

Note
  This operation is not guaranteed to produce an optimally sparse tree. Follow merge() with prune() for optimal sparseness.

Warning
  This operation always empties the other tree.

## ◆ modifyValue()

template<typename ChildT>
template<typename ModifyOp>

void modifyValue | ( | const Coord & | xyz,
|  | const ModifyOp & | op )
| inline

Apply a functor to the value of the voxel at the given coordinates and mark the voxel as active.

## ◆ modifyValueAndActiveState()

template<typename ChildT>
template<typename ModifyOp>

void modifyValueAndActiveState | ( | const Coord & | xyz,
|  | const ModifyOp & | op )
| inline

Apply a functor to the voxel at the given coordinates.

## ◆ modifyValueAndActiveStateAndCache()

template<typename ChildT>
template<typename ModifyOp, typename AccessorT>

void modifyValueAndActiveStateAndCache | ( | const Coord & | xyz,
|  | const ModifyOp & | op,
|  | AccessorT & | acc )
| inline

Apply a functor to the voxel at the given coordinates. If necessary, update the accessor with pointers to the nodes along the path from the root node to the node containing the voxel.

Note
  Used internally by ValueAccessor.

## ◆ modifyValueAndCache()

template<typename ChildT>
template<typename ModifyOp, typename AccessorT>

void modifyValueAndCache | ( | const Coord & | xyz,
|  | const ModifyOp & | op,
|  | AccessorT & | acc )
| inline

Apply a functor to the value of the voxel at the given coordinates and mark the voxel as active. If necessary, update the accessor with pointers to the nodes along the path from the root node to the node containing the voxel.

Note
  Used internally by ValueAccessor.

## ◆ nodeCount() [1/2]

template<typename ChildT>

void nodeCount | ( | std::vector< Index32 > & | vec | ) | const
| inline

Deprecated
  "Use input type std::vector<Index64> for nodeCount."

## ◆ nodeCount() [2/2]

template<typename ChildT>

void nodeCount | ( | std::vector< Index64 > & | vec | ) | const
| inline

## ◆ nonLeafCount()

template<typename ChildT>

Index64 nonLeafCount | ( |  | ) | const
| inline

## ◆ numBackgroundTiles()

template<typename ChildT>

size_t numBackgroundTiles | ( |  | ) | const
| inline

Return the number of background tiles.

## ◆ offLeafVoxelCount()

template<typename ChildT>

Index64 offLeafVoxelCount | ( |  | ) | const
| inline

## ◆ offVoxelCount()

template<typename ChildT>

Index64 offVoxelCount | ( |  | ) | const
| inline

## ◆ onLeafVoxelCount()

template<typename ChildT>

Index64 onLeafVoxelCount | ( |  | ) | const
| inline

## ◆ onTileCount()

template<typename ChildT>

Index64 onTileCount | ( |  | ) | const
| inline

## ◆ onVoxelCount()

template<typename ChildT>

Index64 onVoxelCount | ( |  | ) | const
| inline

## ◆ operator=() [1/3]

template<typename ChildT>

RootNode< ChildT > & operator= | ( | const RootNode< ChildType > & | other | ) |
| inline

Copy a root node of the same type as this node.

## ◆ operator=() [2/3]

template<typename ChildType>
template<typename OtherChildType>

RootNode & operator= | ( | const RootNode< OtherChildType > & | other | ) |

Copy a root node of the same tree configuration as this node but a different ValueType.

Exceptions

  TypeError | if the other tree's configuration doesn't match this tree's.

Note
  This node's ValueType must be constructible from the other node's ValueType. For example, a root node with values of type float can be assigned to a root node with values of type Vec3s, because a Vec3s can be constructed from a float. But a Vec3s root node cannot be assigned to a float root node.

## ◆ operator=() [3/3]

template<typename ChildType>
template<typename OtherChildType>

RootNode< ChildT > & operator= | ( | const RootNode< OtherChildType > & | other | ) |
| inline

## ◆ origin()

template<typename ChildType>

const Coord & origin | ( |  | ) | const
| inline

Return the grid index coordinates of this node's local origin.

## ◆ probe() [1/2]

template<typename ChildT>

bool probe | ( | const Coord & | xyz,
|  | ChildNodeType *& | child,
|  | ValueType & | value,
|  | bool & | active )
| inline

Return a pointer to the root child node that contains voxel (x, y, z). If no such node exists, query and set the tile value and active status and return `nullptr`.

## ◆ probe() [2/2]

template<typename ChildType>

bool probe | ( | const Coord & | xyz,
|  | const ChildNodeType *& | child,
|  | ValueType & | value,
|  | bool & | active ) const
| inline

## ◆ probeChild() [1/2]

template<typename ChildT>

ChildT * probeChild | ( | const Coord & | xyz | ) |
| inline

Return a pointer to the root child node that contains voxel (x, y, z). If no such node exists, return `nullptr`.

## ◆ probeChild() [2/2]

template<typename ChildType>

const ChildNodeType * probeChild | ( | const Coord & | xyz | ) | const
| inline

## ◆ probeConst()

template<typename ChildT>

bool probeConst | ( | const Coord & | xyz,
|  | const ChildNodeType *& | child,
|  | ValueType & | value,
|  | bool & | active ) const
| inline

## ◆ probeConstChild()

template<typename ChildT>

const ChildT * probeConstChild | ( | const Coord & | xyz | ) | const
| inline

## ◆ probeConstLeaf()

template<typename ChildT>

const ChildT::LeafNodeType * probeConstLeaf | ( | const Coord & | xyz | ) | const
| inline

## ◆ probeConstLeafAndCache() [1/2]

template<typename ChildType>
template<typename AccessorT>

const LeafNodeType * probeConstLeafAndCache | ( | const Coord & | xyz,
|  | AccessorT & | acc ) const

## ◆ probeConstLeafAndCache() [2/2]

template<typename ChildType>
template<typename AccessorT>

const ChildT::LeafNodeType * probeConstLeafAndCache | ( | const Coord & | xyz,
|  | AccessorT & | acc ) const
| inline

## ◆ probeConstNode()

template<typename ChildT>
template<typename NodeT>

const NodeT * probeConstNode | ( | const Coord & | xyz | ) | const
| inline

## ◆ probeConstNodeAndCache()

template<typename ChildT>
template<typename NodeT, typename AccessorT>

const NodeT * probeConstNodeAndCache | ( | const Coord & | xyz,
|  | AccessorT & | acc ) const
| inline

## ◆ probeLeaf() [1/2]

template<typename ChildT>

ChildT::LeafNodeType * probeLeaf | ( | const Coord & | xyz | ) |
| inline

Return a pointer to the leaf node that contains voxel (x, y, z). If no such node exists, return `nullptr`.

## ◆ probeLeaf() [2/2]

template<typename ChildType>

const LeafNodeType * probeLeaf | ( | const Coord & | xyz | ) | const
| inline

## ◆ probeLeafAndCache() [1/4]

template<typename ChildType>
template<typename AccessorT>

LeafNodeType * probeLeafAndCache | ( | const Coord & | xyz,
|  | AccessorT & | acc )

Same as probeLeaf() but, if necessary, update the given accessor with pointers to the nodes along the path from the root node to the node containing the coordinate.

## ◆ probeLeafAndCache() [2/4]

template<typename ChildType>
template<typename AccessorT>

ChildT::LeafNodeType * probeLeafAndCache | ( | const Coord & | xyz,
|  | AccessorT & | acc )
| inline

## ◆ probeLeafAndCache() [3/4]

template<typename ChildType>
template<typename AccessorT>

const LeafNodeType * probeLeafAndCache | ( | const Coord & | xyz,
|  | AccessorT & | acc ) const

## ◆ probeLeafAndCache() [4/4]

template<typename ChildType>
template<typename AccessorT>

const ChildT::LeafNodeType * probeLeafAndCache | ( | const Coord & | xyz,
|  | AccessorT & | acc ) const
| inline

## ◆ probeNode() [1/2]

template<typename ChildT>
template<typename NodeT>

NodeT * probeNode | ( | const Coord & | xyz | ) |
| inline

Return a pointer to the node that contains voxel (x, y, z). If no such node exists, return `nullptr`.

## ◆ probeNode() [2/2]

template<typename ChildT>
template<typename NodeT>

const NodeT * probeNode | ( | const Coord & | xyz | ) | const
| inline

## ◆ probeNodeAndCache()

template<typename ChildT>
template<typename NodeT, typename AccessorT>

NodeT * probeNodeAndCache | ( | const Coord & | xyz,
|  | AccessorT & | acc )
| inline

Same as probeNode() but, if necessary, update the given accessor with pointers to the nodes along the path from the root node to the node containing the coordinate.

## ◆ probeValue()

template<typename ChildT>

bool probeValue | ( | const Coord & | xyz,
|  | ValueType & | value ) const
| inline

## ◆ probeValueAndCache()

template<typename ChildT>
template<typename AccessorT>

bool probeValueAndCache | ( | const Coord & | xyz,
|  | ValueType & | value,
|  | AccessorT & | acc ) const
| inline

Return, in value, the value of the voxel at the given coordinates and, if necessary, update the accessor with pointers to the nodes along the path from the root node to the node containing the voxel.

Returns
  `true` if the voxel at the given coordinates is active

Note
  Used internally by ValueAccessor.

## ◆ prune()

template<typename ChildT>

void prune | ( | const ValueType & | tolerance = zeroVal<ValueType>() | ) |
| inline

Reduce the memory footprint of this tree by replacing with tiles any nodes whose values are all the same (optionally to within a tolerance) and have the same active state.

Note
  Consider instead using tools::prune which is multi-threaded!

## ◆ readBuffers() [1/2]

template<typename ChildT>

void readBuffers | ( | std::istream & | is,
|  | bool | fromHalf = false )
| inline

## ◆ readBuffers() [2/2]

template<typename ChildT>

void readBuffers | ( | std::istream & | is,
|  | const CoordBBox & | clipBBox,
|  | bool | fromHalf = false )
| inline

## ◆ readTopology()

template<typename ChildT>

bool readTopology | ( | std::istream & | is,
|  | bool | fromHalf = false )
| inline

## ◆ setActiveState()

template<typename ChildT>

void setActiveState | ( | const Coord & | xyz,
|  | bool | on )
| inline

Set the active state of the voxel at the given coordinates but don't change its value.

## ◆ setActiveStateAndCache()

template<typename ChildT>
template<typename AccessorT>

void setActiveStateAndCache | ( | const Coord & | xyz,
|  | bool | on,
|  | AccessorT & | acc )
| inline

Set the active state of the voxel at the given coordinates without changing its value. If necessary, update the accessor with pointers to the nodes along the path from the root node to the node containing the voxel.

Note
  Used internally by ValueAccessor.

## ◆ setBackground()

template<typename ChildT>

void setBackground | ( | const ValueType & | value,
|  | bool | updateChildNodes )
| inline

Change inactive tiles or voxels with a value equal to +/- the old background to the specified value (with the same sign). Active values are unchanged.

Parameters

  value | The new background value
  updateChildNodes | If true the background values of the child nodes is also updated. Else only the background value stored in the RootNode itself is changed.

Note
  Instead of setting updateChildNodes to true, consider using tools::changeBackground or tools::changeLevelSetBackground which are multi-threaded!

## ◆ setOrigin()

template<typename ChildT>

void setOrigin | ( | const Coord & | origin | ) |
| inline

change the origin on this root node

Parameters

  origin | the index coordinates of the new alignment

Warning
  This method will throw if the origin is non-zero, since other tools do not yet support variable offsets.

## ◆ setTransientData()

template<typename ChildType>

void setTransientData | ( | Index32 | transientData | ) |
| inline

Set the transient data value.

## ◆ setValueAndCache()

template<typename ChildT>
template<typename AccessorT>

void setValueAndCache | ( | const Coord & | xyz,
|  | const ValueType & | value,
|  | AccessorT & | acc )
| inline

Change the value of the voxel at the given coordinates and mark it as active. If necessary, update the accessor with pointers to the nodes along the path from the root node to the node containing the voxel.

Note
  Used internally by ValueAccessor.

## ◆ setValueOff() [1/2]

template<typename ChildT>

void setValueOff | ( | const Coord & | xyz | ) |
| inline

Mark the voxel at the given coordinates as inactive but don't change its value.

## ◆ setValueOff() [2/2]

template<typename ChildT>

void setValueOff | ( | const Coord & | xyz,
|  | const ValueType & | value )
| inline

Set the value of the voxel at the given coordinates and mark the voxel as inactive.

## ◆ setValueOffAndCache()

template<typename ChildT>
template<typename AccessorT>

void setValueOffAndCache | ( | const Coord & | xyz,
|  | const ValueType & | value,
|  | AccessorT & | acc )
| inline

Change the value of the voxel at the given coordinates and mark it as inactive. If necessary, update the accessor with pointers to the nodes along the path from the root node to the node containing the voxel.

Note
  Used internally by ValueAccessor.

## ◆ setValueOn()

template<typename ChildT>

void setValueOn | ( | const Coord & | xyz,
|  | const ValueType & | value )
| inline

Set the value of the voxel at the given coordinates and mark the voxel as active.

## ◆ setValueOnly()

template<typename ChildT>

void setValueOnly | ( | const Coord & | xyz,
|  | const ValueType & | value )
| inline

Set the value of the voxel at the given coordinates but don't change its active state.

## ◆ setValueOnlyAndCache()

template<typename ChildT>
template<typename AccessorT>

void setValueOnlyAndCache | ( | const Coord & | xyz,
|  | const ValueType & | value,
|  | AccessorT & | acc )
| inline

Set the value of the voxel at the given coordinates without changing its active state. If necessary, update the accessor with pointers to the nodes along the path from the root node to the node containing the voxel.

Note
  Used internally by ValueAccessor.

## ◆ sparseFill()

template<typename ChildType>

void sparseFill | ( | const CoordBBox & | bbox,
|  | const ValueType & | value,
|  | bool | active = true )
| inline

## ◆ stealNode()

template<typename ChildT>
template<typename NodeT>

NodeT * stealNode | ( | const Coord & | xyz,
|  | const ValueType & | value,
|  | bool | state )
| inline

Return a pointer to the node of type `NodeT` that contains voxel (x, y, z) and replace it with a tile of the specified value and state. If no such node exists, leave the tree unchanged and return `nullptr`.

Note
  The caller takes ownership of the node and is responsible for deleting it.

Warning
  Since this method potentially removes nodes and branches of the tree, it is important to clear the caches of all ValueAccessors associated with this tree.

## ◆ stealNodes() [1/2]

template<typename ChildType>
template<typename ArrayT>

void stealNodes | ( | ArrayT & | array | ) |
| inline

## ◆ stealNodes() [2/2]

template<typename ChildT>
template<typename ArrayT>

void stealNodes | ( | ArrayT & | array,
|  | const ValueType & | value,
|  | bool | state )
| inline

Steals all nodes of a certain type from the tree and adds them to a container with the following API:

struct ArrayT {
using value_type = ...;// defines the type of nodes to be added to the array
void push_back(value_type nodePtr);// method that add nodes to the array
};

An example of a wrapper around a c-style array is:

struct MyArray {
using value_type = LeafType*;
value_type* ptr;
MyArray(value_type* array) : ptr(array) {}
void push_back(value_type leaf) { *ptr++ = leaf; }
};

An example that constructs a list of pointer to all leaf nodes is:

std::vector<const LeafNodeType*> array;//most std contains have the required API
array.reserve(tree.leafCount());//this is a fast preallocation.
tree.stealNodes(array);

## ◆ tileCount()

template<typename ChildT>

Index32 tileCount | ( |  | ) | const
| inline

## ◆ topologyDifference()

template<typename ChildT>
template<typename OtherChildType>

void topologyDifference | ( | const RootNode< OtherChildType > & | other | ) |
| inline

Difference this tree's set of active values with the active values of the other tree, whose `ValueType` may be different. So a resulting voxel will be active only if the original voxel is active in this tree and inactive in the other tree.

Note
  This operation can delete branches in this grid if they overlap with active tiles in the other grid. Likewise active voxels can be turned into inactive voxels resulting in leaf nodes with no active values. Thus, it is recommended to subsequently call prune.

## ◆ topologyIntersection()

template<typename ChildT>
template<typename OtherChildType>

void topologyIntersection | ( | const RootNode< OtherChildType > & | other | ) |
| inline

Intersects this tree's set of active values with the active values of the other tree, whose `ValueType` may be different.

The resulting state of a value is active only if the corresponding value was already active AND if it is active in the other tree. Also, a resulting value maps to a voxel if the corresponding value already mapped to an active voxel in either of the two grids and it maps to an active tile or voxel in the other grid.

Note
  This operation can delete branches in this grid if they overlap with inactive tiles in the other grid. Likewise active voxels can be turned into inactive voxels resulting in leaf nodes with no active values. Thus, it is recommended to subsequently call prune.

## ◆ topologyUnion()

template<typename ChildT>
template<typename OtherChildType>

void topologyUnion | ( | const RootNode< OtherChildType > & | other,
|  | const bool | preserveTiles = false )
| inline

Union this tree's set of active values with the active values of the other tree, whose `ValueType` may be different.

The resulting state of a value is active if the corresponding value was already active OR if it is active in the other tree. Also, a resulting value maps to a voxel if the corresponding value already mapped to a voxel OR if it is a voxel in the other tree. Thus, a resulting value can only map to a tile if the corresponding value already mapped to a tile AND if it is a tile value in other tree.

Note
  This operation modifies only active states, not values. Specifically, active tiles and voxels in this tree are not changed, and tiles or voxels that were inactive in this tree but active in the other tree are marked as active in this tree but left with their original values.
  If preserveTiles is true, any active tile in this topology will not be densified by overlapping child topology.

## ◆ touchLeaf()

template<typename ChildT>

ChildT::LeafNodeType * touchLeaf | ( | const Coord & | xyz | ) |
| inline

Return a pointer to the leaf node that contains voxel (x, y, z). If no such node exists, create one that preserves the values and active states of all voxels.

Use this method to preallocate a static tree topology over which to safely perform multithreaded processing.

## ◆ touchLeafAndCache() [1/2]

template<typename ChildType>
template<typename AccessorT>

LeafNodeType * touchLeafAndCache | ( | const Coord & | xyz,
|  | AccessorT & | acc )

Same as touchLeaf() but, if necessary, update the given accessor with pointers to the nodes along the path from the root node to the node containing the coordinate.

## ◆ touchLeafAndCache() [2/2]

template<typename ChildType>
template<typename AccessorT>

ChildT::LeafNodeType * touchLeafAndCache | ( | const Coord & | xyz,
|  | AccessorT & | acc )
| inline

## ◆ transientData()

template<typename ChildType>

Index32 transientData | ( |  | ) | const
| inline

Return the transient data value.

## ◆ voxelizeActiveTiles()

template<typename ChildT>

void voxelizeActiveTiles | ( | bool | threaded = true | ) |
| inline

Densify active tiles, i.e., replace them with leaf-level active voxels.

Parameters

  threaded | if true, this operation is multi-threaded (over the internal nodes).

Warning
  This method can explode the tree's memory footprint, especially if it contains active tiles at the upper levels (in particular the root level)!

See also
  denseFill()

## ◆ writeBuffers()

template<typename ChildT>

void writeBuffers | ( | std::ostream & | os,
|  | bool | toHalf = false ) const
| inline

## ◆ writeTopology()

template<typename ChildT>

bool writeTopology | ( | std::ostream & | os,
|  | bool | toHalf = false ) const
| inline

## Friends And Related Symbol Documentation

## ◆ RootNode

template<typename ChildType>
template<typename>

friend class RootNode
| friend

During topology-only construction, access is needed to protected/private members of other template instances.

## ◆ RootNodeCombineHelper

template<typename ChildType>
template<typename, typename, typename, bool>

friend struct RootNodeCombineHelper
| friend

## ◆ RootNodeCopyHelper

template<typename ChildType>
template<typename, typename, bool>

friend struct RootNodeCopyHelper
| friend

## Member Data Documentation

## ◆ LEVEL

template<typename ChildType>

const Index LEVEL = 1 + ChildType::LEVEL
| static