Class performing graph computations for VisiTrace algorithm. More...

#include <WVisiTrace.h>

Collaboration diagram for WVisiTrace:

Public Member Functions
	WVisiTrace ()
	Simple constructor performing initializations. More...

std::vector< WPosition >	getLine ()
	Get the final 3D line a vector of WPosition. More...

void	addCandidatesForRay (const std::vector< std::pair< double, WPosition > > candidates)
	Add candidate positions and corresponding opacity jump values for one viewing ray. More...

void	reset ()
	Erases all data to be able to start a new VisiTrace computation. More...

Private Member Functions
void	performVisiTrace ()
	Optimization resulting in the desired 3D curve (m_curve3D). More...

std::vector< std::pair< int, int > >	getLinearizedNodesRefs () const
	Get an vector with reference ids for all nodes. More...

std::vector< std::vector< int > >	getInverseLinearizedNodesRefs () const
	Get ids in the vector of getLinearizedNodesRefs from structure of m_candidatePositions. More...

void	performDijkstra ()
	Create weighted graph and find shortest path from according to VisiTrace. More...

Private Attributes
std::vector< std::vector< WPosition > >	m_candidatePositions
	The candidate positions for all rays. More...

std::vector< std::vector< double > >	m_candidateJumps
	The opacity jumps belonging to the intervals of the candidate positions. More...

std::vector< WPosition >	m_curve3D
	The 3D curve computed by VisiTrace. More...

bool	m_dataChanged
	Indicates whether new data has been added since last VisiTrace computation. More...

Friends
class	WVisiTraceTest
	Test class needs private access. More...

Detailed Description

Class performing graph computations for VisiTrace algorithm.

The algorithm has been published here: http://dx.doi.org/10.2312/PE.EuroVisShort.EuroVisShort2013.091-095

The aim is to draw smooth lines on top visible structures in direct volume renderings.

Definition at line 41 of file WVisiTrace.h.

Constructor & Destructor Documentation

◆ WVisiTrace()

WVisiTrace::WVisiTrace ( )

Simple constructor performing initializations.

Definition at line 40 of file WVisiTrace.cpp.

Member Function Documentation

◆ addCandidatesForRay()

void WVisiTrace::addCandidatesForRay ( const std::vector< std::pair< double, WPosition > > candidates )

Add candidate positions and corresponding opacity jump values for one viewing ray.

These values are the basis for visiTrace computation.

Parameters

candidates candidate positions and corresponding opacity jumps

Definition at line 59 of file WVisiTrace.cpp.

References m_candidateJumps, m_candidatePositions, and m_dataChanged.

Referenced by WMPickingDVR::moduleMain(), and WVisiTraceTest::testAddingPositions().

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◆ getInverseLinearizedNodesRefs()

std::vector< std::vector< int > > WVisiTrace::getInverseLinearizedNodesRefs ( ) const

private

Get ids in the vector of getLinearizedNodesRefs from structure of m_candidatePositions.

Returns: vector of vectors containing correpsonding ids in linearized vector

Definition at line 89 of file WVisiTrace.cpp.

References m_candidatePositions.

Referenced by performDijkstra(), and WVisiTraceTest::testInverseLinearization().

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◆ getLine()

std::vector< WPosition > WVisiTrace::getLine ( )

Get the final 3D line a vector of WPosition.

If data has changed since last call a recomputation will be triggered.

Returns: 3D line computed by visitrace.

Definition at line 48 of file WVisiTrace.cpp.

References m_curve3D, m_dataChanged, and performVisiTrace().

Referenced by WMPickingDVR::moduleMain(), and WVisiTraceTest::testGetLineOfInitial().

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◆ getLinearizedNodesRefs()

std::vector< std::pair< int, int > > WVisiTrace::getLinearizedNodesRefs ( ) const

private

Get an vector with reference ids for all nodes.

Returns: vector containing pair of indices referencing m_candidatePositions (m_candidateJumps).

Definition at line 76 of file WVisiTrace.cpp.

References m_candidatePositions.

Referenced by performDijkstra(), and WVisiTraceTest::testLinearization().

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◆ performDijkstra()

void WVisiTrace::performDijkstra ( )

private

Create weighted graph and find shortest path from according to VisiTrace.

Definition at line 105 of file WVisiTrace.cpp.

References getInverseLinearizedNodesRefs(), getLinearizedNodesRefs(), m_candidateJumps, m_candidatePositions, and m_curve3D.

Referenced by performVisiTrace(), and WVisiTraceTest::testPerformDijkstraException().

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◆ performVisiTrace()

void WVisiTrace::performVisiTrace ( )

private

Optimization resulting in the desired 3D curve (m_curve3D).

Definition at line 269 of file WVisiTrace.cpp.

References performDijkstra().

Referenced by getLine().

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◆ reset()

void WVisiTrace::reset ( )

Erases all data to be able to start a new VisiTrace computation.

Definition at line 274 of file WVisiTrace.cpp.

References m_candidateJumps, m_candidatePositions, m_curve3D, and m_dataChanged.

Referenced by WMPickingDVR::moduleMain().

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Friends And Related Function Documentation

◆ WVisiTraceTest

friend class WVisiTraceTest

friend

Test class needs private access.

Definition at line 43 of file WVisiTrace.h.

Member Data Documentation

◆ m_candidateJumps

std::vector< std::vector< double > > WVisiTrace::m_candidateJumps

private

The opacity jumps belonging to the intervals of the candidate positions.

Definition at line 99 of file WVisiTrace.h.

Referenced by addCandidatesForRay(), performDijkstra(), reset(), WVisiTraceTest::testAddingPositions(), and WVisiTraceTest::testPerformDijkstraException().

◆ m_candidatePositions

std::vector< std::vector< WPosition > > WVisiTrace::m_candidatePositions

private

The candidate positions for all rays.

Definition at line 98 of file WVisiTrace.h.

Referenced by addCandidatesForRay(), getInverseLinearizedNodesRefs(), getLinearizedNodesRefs(), performDijkstra(), reset(), WVisiTraceTest::testAddingPositions(), WVisiTraceTest::testInverseLinearization(), WVisiTraceTest::testLinearization(), and WVisiTraceTest::testPerformDijkstraException().

◆ m_curve3D

std::vector< WPosition > WVisiTrace::m_curve3D

private

The 3D curve computed by VisiTrace.

Definition at line 100 of file WVisiTrace.h.

Referenced by getLine(), performDijkstra(), reset(), and WVisiTraceTest::testPerformDijkstraException().

◆ m_dataChanged

bool WVisiTrace::m_dataChanged

private

Indicates whether new data has been added since last VisiTrace computation.

Definition at line 102 of file WVisiTrace.h.

Referenced by addCandidatesForRay(), getLine(), and reset().

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

Public Member Functions

Private Member Functions

Private Attributes

Friends

Detailed Description

Constructor & Destructor Documentation

◆ WVisiTrace()

Member Function Documentation

◆ addCandidatesForRay()

◆ getInverseLinearizedNodesRefs()

◆ getLine()

◆ getLinearizedNodesRefs()

◆ performDijkstra()

◆ performVisiTrace()

◆ reset()

Friends And Related Function Documentation

◆ WVisiTraceTest

Member Data Documentation

◆ m_candidateJumps

◆ m_candidatePositions

◆ m_curve3D

◆ m_dataChanged