VtkSurfacesSource Class Reference

Detailed Description

VTK source object for the visualisation of surfaces. Technically, surfaces are displayed as triangulated polydata objects.

Definition at line 16 of file VtkSurfacesSource.h.

#include <VtkSurfacesSource.h>

Inheritance diagram for VtkSurfacesSource:

Collaboration diagram for VtkSurfacesSource:

Public Member Functions
	vtkTypeMacro (VtkSurfacesSource, vtkPolyDataAlgorithm)
void	setSurfaces (const std::vector< GeoLib::Surface * > *surfaces)
	Sets the surfaces vector.
void	PrintSelf (ostream &os, vtkIndent indent) override
	Prints its data on a stream.
void	SetUserProperty (QString name, QVariant value) override
	Generates random colors for each surface.
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.

Static Public Member Functions
static VtkSurfacesSource *	New ()
	Create new objects with New() because of VTKs object reference counting.

Protected Member Functions
	VtkSurfacesSource ()
	~VtkSurfacesSource () override=default
int	RequestData (vtkInformation *request, vtkInformationVector **inputVector, vtkInformationVector *outputVector) override
	Computes the polygonal data object.
int	RequestInformation (vtkInformation *request, vtkInformationVector **inputVector, vtkInformationVector *outputVector) override

Protected Attributes
const std::vector< GeoLib::Surface * > *	_surfaces {nullptr}
	The surfaces to visualize.
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

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

Constructor & Destructor Documentation

VtkSurfacesSource()

VtkSurfacesSource::VtkSurfacesSource ( )

protected

Definition at line 25 of file VtkSurfacesSource.cpp.

{
    _removable = false;  // From VtkAlgorithmProperties
    this->SetNumberOfInputPorts(0);
    // this->SetColorBySurface(true);
 
    const DataHolderLib::Color c = DataHolderLib::getRandomColor();
    vtkProperty* vtkProps = GetProperties();
    vtkProps->SetColor(c[0] / 255.0, c[1] / 255.0, c[2] / 255.0);
    vtkProps->SetEdgeVisibility(0);
}

References VtkAlgorithmProperties::_removable, VtkAlgorithmProperties::GetProperties(), and DataHolderLib::getRandomColor().

Referenced by New(), and vtkTypeMacro().

~VtkSurfacesSource()

VtkSurfacesSource::~VtkSurfacesSource ( )

overrideprotecteddefault

Member Function Documentation

New()

VtkSurfacesSource * VtkSurfacesSource::New ( )

static

Create new objects with New() because of VTKs object reference counting.

References VtkSurfacesSource().

PrintSelf()

void VtkSurfacesSource::PrintSelf ( ostream & os, vtkIndent indent )

override

Prints its data on a stream.

Definition at line 37 of file VtkSurfacesSource.cpp.

{
    this->Superclass::PrintSelf(os, indent);
 
    if (_surfaces->empty())
    {
        return;
    }
 
    os << indent << "== VtkSurfacesSource =="
       << "\n";
}

References _surfaces.

RequestData()

int VtkSurfacesSource::RequestData ( vtkInformation * request, vtkInformationVector ** inputVector, vtkInformationVector * outputVector )

overrideprotected

Computes the polygonal data object.

Definition at line 50 of file VtkSurfacesSource.cpp.

{
    (void)request;
    (void)inputVector;
 
    if (_surfaces->empty())
    {
        return 0;
    }
 
    const std::vector<GeoLib::Point*>* surfacePoints =
        (*_surfaces)[0]->getPointVec();
    std::size_t const nPoints = surfacePoints->size();
 
    vtkSmartPointer<vtkInformation> outInfo =
        outputVector->GetInformationObject(0);
    vtkSmartPointer<vtkPolyData> output =
        vtkPolyData::SafeDownCast(outInfo->Get(vtkDataObject::DATA_OBJECT()));
    if (outInfo->Get(vtkStreamingDemandDrivenPipeline::UPDATE_PIECE_NUMBER()) >
        0)
    {
        return 1;
    }
 
    vtkSmartPointer<vtkPoints> newPoints = vtkSmartPointer<vtkPoints>::New();
    newPoints->SetNumberOfPoints(nPoints);
 
    vtkSmartPointer<vtkCellArray> newPolygons =
        vtkSmartPointer<vtkCellArray>::New();
    // newPolygons->Allocate(nSurfaces);
 
    vtkSmartPointer<vtkIntArray> sfcIDs = vtkSmartPointer<vtkIntArray>::New();
    sfcIDs->SetNumberOfComponents(1);
    sfcIDs->SetName("SurfaceIDs");
 
    for (std::size_t i = 0; i < nPoints; ++i)
    {
        newPoints->SetPoint(i, (*surfacePoints)[i]->data());
    }
 
    int count(0);
    for (auto surface : *_surfaces)
    {
        const std::size_t nTriangles = surface->getNumberOfTriangles();
 
        for (std::size_t i = 0; i < nTriangles; ++i)
        {
            vtkTriangle* new_tri = vtkTriangle::New();
            new_tri->GetPointIds()->SetNumberOfIds(3);
 
            const GeoLib::Triangle* triangle = (*surface)[i];
            for (std::size_t j = 0; j < 3; ++j)
            {
                new_tri->GetPointIds()->SetId(j, ((*triangle)[j]));
            }
            newPolygons->InsertNextCell(new_tri);
            sfcIDs->InsertNextValue(count);
            new_tri->Delete();
        }
        count++;
    }
 
    output->SetPoints(newPoints);
    output->SetPolys(newPolygons);
    output->GetCellData()->AddArray(sfcIDs);
    output->GetCellData()->SetActiveAttribute("SurfaceIDs",
                                              vtkDataSetAttributes::SCALARS);
    output->Squeeze();
 
    return 1;
}

References _surfaces.

RequestInformation()

int VtkSurfacesSource::RequestInformation ( vtkInformation * request, vtkInformationVector ** inputVector, vtkInformationVector * outputVector )

overrideprotected

Definition at line 124 of file VtkSurfacesSource.cpp.

{
    return 1;
}

setSurfaces()

void VtkSurfacesSource::setSurfaces ( const std::vector< GeoLib::Surface * > * surfaces )

inline

Sets the surfaces vector.

Definition at line 25 of file VtkSurfacesSource.h.

{ _surfaces = surfaces; }

References _surfaces.

Referenced by GeoObjectListItem::GeoObjectListItem().

SetUserProperty()

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

overridevirtual

Generates random colors for each surface.

Reimplemented from VtkAlgorithmProperties.

Definition at line 132 of file VtkSurfacesSource.cpp.

{
    VtkAlgorithmProperties::SetUserProperty(name, value);
    (*_algorithmUserProperties)[name] = value;
}

References VtkAlgorithmProperties::SetUserProperty().

vtkTypeMacro()

VtkSurfacesSource::vtkTypeMacro	(	VtkSurfacesSource	,
		vtkPolyDataAlgorithm	)

References VtkSurfacesSource().

Member Data Documentation

_surfaces

const std::vector<GeoLib::Surface*>* VtkSurfacesSource::_surfaces {nullptr}

protected

The surfaces to visualize.

Definition at line 51 of file VtkSurfacesSource.h.

{nullptr};

Referenced by PrintSelf(), RequestData(), and setSurfaces().

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

• VtkSurfacesSource.h
• VtkSurfacesSource.cpp