vtkTestReader
VTKExamples/Cxx/Developers/vtkTestReader
Code
vtkTestReader.cxx
#include "vtkTestReader.h"
#include "vtkObjectFactory.h"
#include "vtkStreamingDemandDrivenPipeline.h"
#include "vtkInformationVector.h"
#include "vtkInformation.h"
#include "vtkDataObject.h"
#include "vtkNew.h"
vtkStandardNewMacro(vtkTestReader);
vtkTestReader::vtkTestReader()
{
this->FileName = NULL;
this->SetNumberOfInputPorts(0);
this->SetNumberOfOutputPorts(1);
}
vtkTestReader::~vtkTestReader()
{
}
// This override is not needed as the FillOutputPortInformation on vtkPolyDataAlgorithm
// does this. Override this if you need something different from one output that
// is a vtkPolyData
int vtkTestReader::FillOutputPortInformation( int port, vtkInformation* info )
{
if ( port == 0 )
{
info->Set(vtkDataObject::DATA_TYPE_NAME(), "vtkPolyData" );
return 1;
}
return 0;
}
int vtkTestReader::RequestData(
vtkInformation *vtkNotUsed(request),
vtkInformationVector **vtkNotUsed(inputVector),
vtkInformationVector *outputVector)
{
// Get the output
vtkPolyData *output = vtkPolyData::GetData(outputVector,0)
vtkNew<vtkPolyData> polydata;
vtkNew<vtkPoints> points;
points->InsertNextPoint(0.0, 0.0, 0.0);
polydata->SetPoints(points.GetPointer());
//output = polydata.GetPointer(); //doesn't work
output->ShallowCopy(polydata.GetPointer());
return 1;
}
//----------------------------------------------------------------------------
void vtkTestReader::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os,indent);
os << indent << "File Name: "
<< (this->FileName ? this->FileName : "(none)") << "\n";
}
CMakeLists.txt
cmake_minimum_required(VERSION 2.8)
PROJECT(vtkTestReader)
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
add_executable(vtkTestReader MACOSX_BUNDLE vtkTestReader.cxx)
target_link_libraries(vtkTestReader ${VTK_LIBRARIES})
Download and Build vtkTestReader
Click here to download vtkTestReader and its CMakeLists.txt file. Once the tarball vtkTestReader.tar has been downloaded and extracted,
cd vtkTestReader/build
If VTK is installed:
cmake ..
If VTK is not installed but compiled on your system, you will need to specify the path to your VTK build:
cmake -DVTK_DIR:PATH=/home/me/vtk_build ..
Build the project:
make
and run it:
./vtkTestReader
WINDOWS USERS PLEASE NOTE: Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.