mmcfilters::AttributeNamesWithDelta Class Reference

Layout object for buffers that store several (attribute, delta) combinations per node. More...

#include <AttributeNames.hpp>

Public Member Functions
	AttributeNamesWithDelta (std::unordered_map< AttributeKey, int > &&map)
	Constructs a layout from an already validated offset map.
int	getIndex (Attribute attr, int delta) const
	Returns the per-node offset associated with (attr, delta).
int	getIndex (AttributeKey attrKey) const
	Returns the per-node offset associated with a composite delta key.
int	linearIndex (int nodeIndex, Attribute attr, int delta) const
	Returns the linear index in the flat buffer for a given node and delta-augmented attribute.
int	linearIndex (int nodeIndex, AttributeKey attrKey) const
	Convenience overload taking an AttributeKey.

Static Public Member Functions
static AttributeNamesWithDelta	create (int delta, const std::vector< Attribute > &attributes)
	Builds the canonical dense layout for all deltas in [-delta, delta].
static std::string	toString (AttributeKey attrKey)
	Returns a human-readable label for a composite key.
static std::string	toString (Attribute attr, int delta)
	Returns a human-readable label for an attribute at a given delta.

Public Attributes
std::unordered_map< AttributeKey, int >	indexMap
	Maps each (attribute, delta) key to its per-node offset.
const int	NUM_ATTRIBUTES
	Number of delta-augmented entries stored for each node.

Detailed Description

Layout object for buffers that store several (attribute, delta) combinations per node.

The layout is node-major: for a given node, all requested delta variants are stored contiguously. NUM_ATTRIBUTES therefore counts the number of (attribute, delta) entries associated with each node, not the number of live nodes.

The class is primarily used by delta-based APIs such as MSER-like stability descriptors, where each node needs access to values sampled at ancestor and descendant offsets around the current position.

Definition at line 39 of file AttributeNames.hpp.

Constructor & Destructor Documentation

AttributeNamesWithDelta()

mmcfilters::AttributeNamesWithDelta::AttributeNamesWithDelta ( std::unordered_map< AttributeKey, int > &&  map )

inline

Constructs a layout from an already validated offset map.

The constructor takes ownership of map and derives the per-node stride from its final size.

Definition at line 53 of file AttributeNames.hpp.

Member Function Documentation

create()

static AttributeNamesWithDelta mmcfilters::AttributeNamesWithDelta::create ( int  delta, const std::vector< Attribute > &  attributes  )

inlinestatic

Builds the canonical dense layout for all deltas in [-delta, delta].

Definition at line 59 of file AttributeNames.hpp.

getIndex() [1/2]

int mmcfilters::AttributeNamesWithDelta::getIndex ( Attribute  attr, int  delta  ) const

inline

Returns the per-node offset associated with (attr, delta).

Definition at line 79 of file AttributeNames.hpp.

getIndex() [2/2]

int mmcfilters::AttributeNamesWithDelta::getIndex ( AttributeKey  attrKey ) const

inline

Returns the per-node offset associated with a composite delta key.

Definition at line 86 of file AttributeNames.hpp.

linearIndex() [1/2]

int mmcfilters::AttributeNamesWithDelta::linearIndex ( int  nodeIndex, Attribute  attr, int  delta  ) const

inline

Returns the linear index in the flat buffer for a given node and delta-augmented attribute.

Definition at line 94 of file AttributeNames.hpp.

linearIndex() [2/2]

int mmcfilters::AttributeNamesWithDelta::linearIndex ( int  nodeIndex, AttributeKey  attrKey  ) const

inline

Convenience overload taking an AttributeKey.

Definition at line 101 of file AttributeNames.hpp.

toString() [1/2]

static std::string mmcfilters::AttributeNamesWithDelta::toString ( Attribute  attr, int  delta  )

inlinestatic

Returns a human-readable label for an attribute at a given delta.

Definition at line 115 of file AttributeNames.hpp.

toString() [2/2]

static std::string mmcfilters::AttributeNamesWithDelta::toString ( AttributeKey  attrKey )

inlinestatic

Returns a human-readable label for a composite key.

Definition at line 108 of file AttributeNames.hpp.

Member Data Documentation

indexMap

std::unordered_map<AttributeKey, int> mmcfilters::AttributeNamesWithDelta::indexMap

Maps each (attribute, delta) key to its per-node offset.

Definition at line 42 of file AttributeNames.hpp.

NUM_ATTRIBUTES

const int mmcfilters::AttributeNamesWithDelta::NUM_ATTRIBUTES

Number of delta-augmented entries stored for each node.

Definition at line 45 of file AttributeNames.hpp.

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The documentation for this class was generated from the following file:

• mmcfilters/attributes/AttributeNames.hpp