Selection algebra operations. More...

#include <cvSelectionAlgebra.h>

Inheritance diagram for cvSelectionAlgebra:

Collaboration diagram for cvSelectionAlgebra:

Public Types
enum class	Operation { UNION , INTERSECTION , DIFFERENCE , SYMMETRIC_DIFF , COMPLEMENT }
	Algebra operations Using enum class to avoid macro conflicts (e.g., DIFFERENCE may be defined as a macro on Windows) Note: Q_ENUM requires QObject to be fully defined before the enum Note: DIFFERENCE macro protection is handled at file scope (top of file) More...

Signals
void	operationComplete (const cvSelectionData &result)
	Emitted when operation is complete. More...

void	progressChanged (int percentage)
	Emitted when filtering progress changes. More...

void	filteringComplete (const cvSelectionData &result)
	Emitted when filtering is complete. More...

Public Member Functions
	cvSelectionAlgebra (QObject *parent=nullptr)

Static Public Member Functions
static cvSelectionData	unionOf (const cvSelectionData &a, const cvSelectionData &b)
	Compute union of two selections. More...

static cvSelectionData	intersectionOf (const cvSelectionData &a, const cvSelectionData &b)
	Compute intersection of two selections. More...

static cvSelectionData	differenceOf (const cvSelectionData &a, const cvSelectionData &b)
	Compute difference of two selections. More...

static cvSelectionData	symmetricDifferenceOf (const cvSelectionData &a, const cvSelectionData &b)
	Compute symmetric difference of two selections. More...

static cvSelectionData	complementOf (vtkPolyData *polyData, const cvSelectionData &input)
	Compute complement of a selection. More...

static cvSelectionData	performOperation (Operation op, const cvSelectionData &a, const cvSelectionData &b, vtkPolyData *polyData=nullptr)
	Perform algebra operation on two selections. More...

static cvSelectionData	growSelection (vtkPolyData *polyData, const cvSelectionData &input, int layers=1, bool removeSeed=false, bool removeIntermediateLayers=false)
	Grow selection by adding neighbors. More...

static cvSelectionData	shrinkSelection (vtkPolyData *polyData, const cvSelectionData &input, int iterations=1)
	Shrink selection by removing boundary elements. More...

static cvSelectionData	expandSelection (vtkPolyData *polyData, const cvSelectionData &input, int layers, bool removeSeed=false, bool removeIntermediateLayers=false)
	Expand selection (ParaView-compatible) More...

static cvSelectionData	extractBoundary (vtkPolyData *polyData, const cvSelectionData &input)
	Extract boundary elements of selection. More...

static bool	areCompatible (const cvSelectionData &a, const cvSelectionData &b)
	Validate that two selections are compatible for operations. More...

static cvSelectionData	growPointSelection (vtkPolyData *polyData, const cvSelectionData &input, int layers=1, bool removeSeed=false, bool removeIntermediateLayers=false)
	Grow point selection by adding neighbor points. More...

static cvSelectionData	shrinkPointSelection (vtkPolyData *polyData, const cvSelectionData &input, int iterations=1)
	Shrink point selection by removing boundary points. More...

Detailed Description

Selection algebra operations.

Provides set-theoretic operations on selections:

Union (A U B): Combine two selections
Intersection (A & B): Common elements
Difference (A - B): Elements in A but not in B
Symmetric Difference (A ^ B): Elements in A or B but not both
Complement (~A): All elements not in A

Based on ParaView's selection algebra functionality.

Definition at line 46 of file cvSelectionAlgebra.h.

Member Enumeration Documentation

◆ Operation

enum cvSelectionAlgebra::Operation

strong

Algebra operations Using enum class to avoid macro conflicts (e.g., DIFFERENCE may be defined as a macro on Windows) Note: Q_ENUM requires QObject to be fully defined before the enum Note: DIFFERENCE macro protection is handled at file scope (top of file)

Enumerator
UNION
INTERSECTION
DIFFERENCE
SYMMETRIC_DIFF
COMPLEMENT

Definition at line 57 of file cvSelectionAlgebra.h.

Constructor & Destructor Documentation

◆ cvSelectionAlgebra()

cvSelectionAlgebra::cvSelectionAlgebra ( QObject * parent = nullptr )

explicit

Definition at line 32 of file cvSelectionAlgebra.cpp.

References CVLog::PrintVerbose().

Member Function Documentation

◆ areCompatible()

bool cvSelectionAlgebra::areCompatible	(	const cvSelectionData &	a,
		const cvSelectionData &	b
	)

static

Validate that two selections are compatible for operations.

Returns: True if compatible

Definition at line 405 of file cvSelectionAlgebra.cpp.

References a, cvSelectionData::fieldAssociation(), and cvSelectionData::isEmpty().

Referenced by differenceOf(), intersectionOf(), symmetricDifferenceOf(), and unionOf().

◆ complementOf()

cvSelectionData cvSelectionAlgebra::complementOf	(	vtkPolyData *	polyData,
		const cvSelectionData &	input
	)

static

Compute complement of a selection.

Parameters

polyData	The mesh data (to determine total element count)
input	Input selection

Returns: Complement result (~A)

Definition at line 165 of file cvSelectionAlgebra.cpp.

References cvSelectionData::count(), CVLog::Error(), cvSelectionData::fieldAssociation(), cvSelectionData::ids(), cvSelectionData::isEmpty(), cvSelectionData::POINTS, CVLog::Print(), and qSetFromVector().

Referenced by performOperation().

◆ differenceOf()

cvSelectionData cvSelectionAlgebra::differenceOf	(	const cvSelectionData &	a,
		const cvSelectionData &	b
	)

static

Compute difference of two selections.

Parameters

a	First selection
b	Second selection

Returns: Difference result (A - B)

Definition at line 92 of file cvSelectionAlgebra.cpp.

References a, areCompatible(), cvSelectionData::count(), CVLog::Error(), cvSelectionData::ids(), cvSelectionData::isEmpty(), CVLog::Print(), qSetFromVector(), qVectorFromSet(), and result.

Referenced by performOperation().

◆ expandSelection()

cvSelectionData cvSelectionAlgebra::expandSelection	(	vtkPolyData *	polyData,
		const cvSelectionData &	input,
		int	layers,
		bool	removeSeed = `false`,
		bool	removeIntermediateLayers = `false`
	)

static

Expand selection (ParaView-compatible)

Parameters

polyData	The mesh data
input	Input selection
layers	Number of layers to expand (positive = grow, negative = shrink)
removeSeed	If true, removes the original seed elements
removeIntermediateLayers	If true, keeps only the outermost layer

Returns: Expanded selection

This is the ParaView-compatible API matching vtkSMSelectionHelper::ExpandSelection

Definition at line 462 of file cvSelectionAlgebra.cpp.

References cvSelectionData::fieldAssociation(), cvSelectionData::hasActorInfo(), cvSelectionData::ids(), cvSelectionData::isEmpty(), cvSelectionData::POINTS, cvSelectionData::primaryActor(), cvSelectionData::primaryPolyData(), CVLog::PrintVerbose(), cvSelectionData::setActorInfo(), and CVLog::Warning().

Referenced by cvViewSelectionManager::expandSelection().

◆ extractBoundary()

cvSelectionData cvSelectionAlgebra::extractBoundary	(	vtkPolyData *	polyData,
		const cvSelectionData &	input
	)

static

Extract boundary elements of selection.

Parameters

polyData	The mesh data
input	Input selection (must be CELLS)

Returns: Boundary selection (cells at the edge of the selection)

Definition at line 370 of file cvSelectionAlgebra.cpp.

References cvSelectionData::CELLS, cvSelectionData::count(), cvSelectionData::fieldAssociation(), cvSelectionData::ids(), cvSelectionData::isEmpty(), CVLog::PrintVerbose(), qSetFromVector(), and CVLog::Warning().

◆ filteringComplete

void cvSelectionAlgebra::filteringComplete ( const cvSelectionData & result )

signal

Emitted when filtering is complete.

◆ growPointSelection()

cvSelectionData cvSelectionAlgebra::growPointSelection	(	vtkPolyData *	polyData,
		const cvSelectionData &	input,
		int	layers = `1`,
		bool	removeSeed = `false`,
		bool	removeIntermediateLayers = `false`
	)

static

Grow point selection by adding neighbor points.

Parameters

polyData	The mesh data
input	Input selection (must be POINTS)
layers	Number of growth layers
removeSeed	If true, removes the original seed points
removeIntermediateLayers	If true, keeps only outermost layer

Returns: Grown selection

Point neighbors are determined by shared cells.

Definition at line 739 of file cvSelectionAlgebra.cpp.

References cvSelectionData::count(), cvSelectionData::fieldAssociation(), cvSelectionData::ids(), cvSelectionData::isEmpty(), cvSelectionData::POINTS, CVLog::PrintVerbose(), qSetFromVector(), and CVLog::Warning().

◆ growSelection()

cvSelectionData cvSelectionAlgebra::growSelection	(	vtkPolyData *	polyData,
		const cvSelectionData &	input,
		int	layers = `1`,
		bool	removeSeed = `false`,
		bool	removeIntermediateLayers = `false`
	)

static

Grow selection by adding neighbors.

Parameters

polyData	The mesh data
input	Input selection (must be CELLS)
layers	Number of growth layers (negative for shrink)
removeSeed	If true, removes the original seed cells (ParaView-aligned)
removeIntermediateLayers	If true, keeps only outermost layer (ParaView-aligned)

Returns: Grown selection

Reference: vtkPVRenderViewSettings::GrowSelectionRemoveSeed vtkPVRenderViewSettings::GrowSelectionRemoveIntermediateLayers

Definition at line 240 of file cvSelectionAlgebra.cpp.

References cvSelectionData::CELLS, cvSelectionData::count(), cvSelectionData::fieldAssociation(), cvSelectionData::ids(), cvSelectionData::isEmpty(), CVLog::PrintVerbose(), qSetFromVector(), and CVLog::Warning().

◆ intersectionOf()

cvSelectionData cvSelectionAlgebra::intersectionOf	(	const cvSelectionData &	a,
		const cvSelectionData &	b
	)

static

Compute intersection of two selections.

Parameters

a	First selection
b	Second selection

Returns: Intersection result (A & B)

Definition at line 63 of file cvSelectionAlgebra.cpp.

References a, areCompatible(), cvSelectionData::count(), CVLog::Error(), cvSelectionData::ids(), cvSelectionData::isEmpty(), CVLog::Print(), qSetFromVector(), qVectorFromSet(), and result.

Referenced by performOperation().

◆ operationComplete

void cvSelectionAlgebra::operationComplete ( const cvSelectionData & result )

signal

Emitted when operation is complete.

◆ performOperation()

cvSelectionData cvSelectionAlgebra::performOperation	(	Operation	op,
		const cvSelectionData &	a,
		const cvSelectionData &	b,
		vtkPolyData *	polyData = `nullptr`
	)

static

Perform algebra operation on two selections.

Parameters

op	Operation to perform
a	First selection
b	Second selection (not used for COMPLEMENT)
polyData	Mesh data (required for COMPLEMENT)

Returns: Result selection

Definition at line 211 of file cvSelectionAlgebra.cpp.

References a, COMPLEMENT, complementOf(), DIFFERENCE, differenceOf(), CVLog::Error(), INTERSECTION, intersectionOf(), SYMMETRIC_DIFF, symmetricDifferenceOf(), UNION, and unionOf().

Referenced by cvViewSelectionManager::performAlgebraOperation().

◆ progressChanged

void cvSelectionAlgebra::progressChanged ( int percentage )

signal

Emitted when filtering progress changes.

◆ shrinkPointSelection()

cvSelectionData cvSelectionAlgebra::shrinkPointSelection	(	vtkPolyData *	polyData,
		const cvSelectionData &	input,
		int	iterations = `1`
	)

static

Shrink point selection by removing boundary points.

Parameters

polyData	The mesh data
input	Input selection (must be POINTS)
iterations	Number of shrink iterations

Returns: Shrunk selection

Definition at line 831 of file cvSelectionAlgebra.cpp.

References cvSelectionData::count(), cvSelectionData::fieldAssociation(), cvSelectionData::ids(), cvSelectionData::isEmpty(), cvSelectionData::POINTS, CVLog::PrintVerbose(), qSetFromVector(), and CVLog::Warning().

◆ shrinkSelection()

cvSelectionData cvSelectionAlgebra::shrinkSelection	(	vtkPolyData *	polyData,
		const cvSelectionData &	input,
		int	iterations = `1`
	)

static

Shrink selection by removing boundary elements.

Parameters

polyData	The mesh data
input	Input selection (must be CELLS)
iterations	Number of shrink iterations

Returns: Shrunk selection

Definition at line 320 of file cvSelectionAlgebra.cpp.

References cvSelectionData::CELLS, cvSelectionData::count(), cvSelectionData::fieldAssociation(), cvSelectionData::ids(), cvSelectionData::isEmpty(), CVLog::PrintVerbose(), qSetFromVector(), and CVLog::Warning().

◆ symmetricDifferenceOf()

cvSelectionData cvSelectionAlgebra::symmetricDifferenceOf	(	const cvSelectionData &	a,
		const cvSelectionData &	b
	)

static

Compute symmetric difference of two selections.

Parameters

a	First selection
b	Second selection

Returns: Symmetric difference result (A ^ B)

Definition at line 124 of file cvSelectionAlgebra.cpp.

References a, areCompatible(), cvSelectionData::count(), CVLog::Error(), cvSelectionData::ids(), cvSelectionData::isEmpty(), CVLog::Print(), qSetFromVector(), qVectorFromSet(), and result.

Referenced by performOperation().

◆ unionOf()

cvSelectionData cvSelectionAlgebra::unionOf	(	const cvSelectionData &	a,
		const cvSelectionData &	b
	)

static

Compute union of two selections.

Parameters

a	First selection
b	Second selection

Returns: Union result (A U B)

Definition at line 37 of file cvSelectionAlgebra.cpp.

References a, areCompatible(), cvSelectionData::count(), CVLog::Error(), cvSelectionData::ids(), cvSelectionData::isEmpty(), CVLog::Print(), qSetFromVector(), qVectorFromSet(), and result.

Referenced by performOperation().

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

/root/ACloudViewer/libs/PCLEngine/Tools/SelectionTools/cvSelectionAlgebra.h
/root/ACloudViewer/libs/PCLEngine/Tools/SelectionTools/cvSelectionAlgebra.cpp

Public Types

Signals

Public Member Functions

Static Public Member Functions

Detailed Description

Member Enumeration Documentation

◆ Operation

Constructor & Destructor Documentation

◆ cvSelectionAlgebra()

Member Function Documentation

◆ areCompatible()

◆ complementOf()

◆ differenceOf()

◆ expandSelection()

◆ extractBoundary()

◆ filteringComplete

◆ growPointSelection()

◆ growSelection()

◆ intersectionOf()

◆ operationComplete

◆ performOperation()

◆ progressChanged

◆ shrinkPointSelection()

◆ shrinkSelection()

◆ symmetricDifferenceOf()

◆ unionOf()