Detailed Description

This filter colors the input by the points z-value.

Definition at line 22 of file VtkCompositeColorByHeightFilter.h.

#include <VtkCompositeColorByHeightFilter.h>

Inheritance diagram for VtkCompositeColorByHeightFilter:

Collaboration diagram for VtkCompositeColorByHeightFilter:

Public Member Functions
	VtkCompositeColorByHeightFilter (vtkAlgorithm *inputAlgorithm)

	~VtkCompositeColorByHeightFilter () override=default

void	init () override

void	SetUserProperty (QString name, QVariant value) override
	Sets a user property. This should be implemented by subclasses.

Public Member Functions inherited from VtkCompositeFilter
	VtkCompositeFilter (vtkAlgorithm *inputAlgorithm)
	Constructor.

	~VtkCompositeFilter () override
	Destructor.

int	GetInputDataObjectType () const

int	GetOutputDataObjectType () const

vtkAlgorithm *	GetOutputAlgorithm () const

Public Member Functions inherited from VtkAlgorithmProperties
	VtkAlgorithmProperties (QObject *parent=nullptr)
	Constructor (sets default values)

	~VtkAlgorithmProperties () override

vtkProperty *	GetProperties () const
	Returns the vtk properties.

vtkTexture *	GetTexture ()
	Returns a texture (if one has been assigned).

void	SetTexture (vtkTexture *t)
	Sets a texture for the VtkVisPipelineItem.

vtkLookupTable *	GetLookupTable (const QString &array_name)
	Returns the colour lookup table (if one has been assigned).

void	RemoveLookupTable (const QString &array_name)
	Removes the lookup table for the given scalar.

void	SetLookUpTable (const QString &array_name, vtkLookupTable *lut)
	Sets a colour lookup table for the given scalar array of the VtkVisPipelineItem.

void	SetLookUpTable (const QString &array_name, const QString &filename)
	Loads a predefined color lookup table from a file for the specified scalar array.

bool	GetScalarVisibility () const
	Returns the scalar visibility.

void	SetScalarVisibility (bool on)
	Sets the scalar visibility.

QString	GetName () const
	Returns the name. This is set to the file path if it is a source algorithm.

void	SetName (QString name)
	Sets the name.

bool	IsRemovable () const
	Is this algorithm removable from the pipeline (view).

QMap< QString, QVariant > *	GetAlgorithmUserProperties () const
	Returns a map of user properties.

QMap< QString, QList< QVariant > > *	GetAlgorithmUserVectorProperties () const
	Returns a map of vector user properties.

QVariant	GetUserProperty (QString name) const
	Returns the value of a user property.

virtual void	SetUserVectorProperty (QString name, QList< QVariant > values)
	Sets a vector user property. This should be implemented by subclasses.

QList< QVariant >	GetUserVectorProperty (QString name) const
	Returns a list of values of a vector user property.

void	SetActiveAttribute (QString name)
	Set the active attribute.

QString	GetActiveAttribute () const
	Returns the desired active attribute.

Additional Inherited Members
Signals inherited from VtkAlgorithmProperties
void	ScalarVisibilityChanged (bool on)

Protected Member Functions inherited from VtkCompositeFilter
double	GetInitialRadius () const
	Calculates a 1/200th of the largest extension of the bounding box (this is used as default radius for various filters)

Protected Attributes inherited from VtkCompositeFilter
int	_inputDataObjectType

int	_outputDataObjectType

vtkAlgorithm *	_inputAlgorithm

vtkAlgorithm *	_outputAlgorithm

Protected Attributes inherited from VtkAlgorithmProperties
vtkProperty *	_property

vtkTexture *	_texture

bool	_scalarVisibility

std::map< QString, vtkLookupTable * >	_lut

QString	_name

QString	_activeAttributeName

bool	_removable

QMap< QString, QVariant > *	_algorithmUserProperties

QMap< QString, QList< QVariant > > *	_algorithmUserVectorProperties

Constructor & Destructor Documentation

◆ VtkCompositeColorByHeightFilter()

VtkCompositeColorByHeightFilter::VtkCompositeColorByHeightFilter ( vtkAlgorithm * inputAlgorithm )

explicit

Definition at line 25 of file VtkCompositeColorByHeightFilter.cpp.

    : VtkCompositeFilter(inputAlgorithm)
{
    this->init();
}

References init().

◆ ~VtkCompositeColorByHeightFilter()

VtkCompositeColorByHeightFilter::~VtkCompositeColorByHeightFilter ( )

overridedefault

Member Function Documentation

◆ init()

void VtkCompositeColorByHeightFilter::init ( )

overridevirtual

Implements VtkCompositeFilter.

Definition at line 32 of file VtkCompositeColorByHeightFilter.cpp.

{
    this->_inputDataObjectType = VTK_DATA_SET;
    this->_outputDataObjectType = VTK_POLY_DATA;
 
    vtkSmartPointer<vtkDataSetSurfaceFilter> surfaceFilter;
    VtkColorByHeightFilter* heightFilter = VtkColorByHeightFilter::New();
 
    if (dynamic_cast<vtkUnstructuredGrid*>(
            _inputAlgorithm->GetOutputDataObject(0)))
    {
        surfaceFilter = vtkSmartPointer<vtkDataSetSurfaceFilter>::New();
        surfaceFilter->SetInputConnection(_inputAlgorithm->GetOutputPort());
        heightFilter->SetInputConnection(surfaceFilter->GetOutputPort());
    }
    else
    {
        heightFilter->SetInputConnection(_inputAlgorithm->GetOutputPort());
    }
 
    DataHolderLib::Color a{{0, 0, 255, 255}};     // blue
    DataHolderLib::Color b{{0, 255, 0, 255}};     // green
    DataHolderLib::Color c{{255, 255, 0, 255}};   // yellow
    DataHolderLib::Color d{{155, 100, 50, 255}};  // brown
    DataHolderLib::Color e{{255, 0, 0, 255}};     // red
    VtkColorLookupTable* ColorLookupTable = heightFilter->GetColorLookupTable();
    ColorLookupTable->setInterpolationType(DataHolderLib::LUTType::LINEAR);
    ColorLookupTable->setColor(-50, a);
    ColorLookupTable->setColor(0, a);
    ColorLookupTable->setColor(1, b);    // instant change at 0m a.s.l.
    ColorLookupTable->setColor(200, b);  // green at about 200m a.s.l.
    ColorLookupTable->setColor(
        500, c);  // yellow at about 500m and changing to red from then on
    ColorLookupTable->setColor(1000, d);
    ColorLookupTable->setColor(2000, e);
    ColorLookupTable->SetTableRange(-35, 2000);
    ColorLookupTable->Build();
 
    // This passes ownership of the ColorLookupTable to VtkVisPointSetItem
    heightFilter->SetLookUpTable("P-Colors", ColorLookupTable);
    heightFilter->Update();
 
    _outputAlgorithm = heightFilter;
    _activeAttributeName = heightFilter->GetActiveAttribute();
}

References VtkAlgorithmProperties::_activeAttributeName, VtkCompositeFilter::_inputAlgorithm, VtkCompositeFilter::_inputDataObjectType, VtkCompositeFilter::_outputAlgorithm, VtkCompositeFilter::_outputDataObjectType, VtkColorLookupTable::Build(), VtkAlgorithmProperties::GetActiveAttribute(), DataHolderLib::LINEAR, VtkColorByHeightFilter::New(), VtkColorLookupTable::setColor(), VtkColorLookupTable::setInterpolationType(), and VtkAlgorithmProperties::SetLookUpTable().

Referenced by VtkCompositeColorByHeightFilter().

◆ SetUserProperty()

void VtkCompositeColorByHeightFilter::SetUserProperty	(	QString	name,
		QVariant	value )

overridevirtual

Sets a user property. This should be implemented by subclasses.

Reimplemented from VtkAlgorithmProperties.

Definition at line 78 of file VtkCompositeColorByHeightFilter.cpp.

{
    Q_UNUSED(name);
    Q_UNUSED(value);
}

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

Applications/DataExplorer/VtkVis/VtkCompositeColorByHeightFilter.h
Applications/DataExplorer/VtkVis/VtkCompositeColorByHeightFilter.cpp