vtkTestMultipleInputPortsFilter
VTKExamples/Cxx/Developers/vtkTestMultipleInputPortsFilter
Code
vtkTestMultipleInputPortsFilter.cxx
#include "vtkTestMultipleInputPortsFilter.h"
#include "vtkObjectFactory.h"
#include "vtkStreamingDemandDrivenPipeline.h"
#include "vtkInformationVector.h"
#include "vtkInformation.h"
#include "vtkDataObject.h"
#include "vtkSmartPointer.h"
vtkStandardNewMacro(vtkTestMultipleInputPortsFilter);
vtkTestMultipleInputPortsFilter::vtkTestMultipleInputPortsFilter()
{
this->SetNumberOfInputPorts(2);
}
int vtkTestMultipleInputPortsFilter::FillInputPortInformation( int port, vtkInformation* info )
{
if ( port == 0 )
{
info->Set(vtkDataObject::DATA_TYPE_NAME(), "vtkPolyData" );
return 1;
}
else if(port == 1)
{
info->Set(vtkDataObject::DATA_TYPE_NAME(), "vtkPolyData" );
return 1;
}
return 0;
}
int vtkTestMultipleInputPortsFilter::RequestData(vtkInformation *vtkNotUsed(request),
vtkInformationVector **inputVector,
vtkInformationVector *outputVector)
{
// get the info objects
vtkInformation *inInfo0 = inputVector[0]->GetInformationObject(0);
vtkInformation *inInfo1 = inputVector[1]->GetInformationObject(0);
vtkInformation *outInfo = outputVector->GetInformationObject(0);
// get the input and ouptut
vtkPolyData *input0 = vtkPolyData::SafeDownCast(
inInfo0->Get(vtkDataObject::DATA_OBJECT()));
std::cout << "input0 has " << input0->GetNumberOfPoints() << " points." << std::endl;
vtkPolyData *input1 = vtkPolyData::SafeDownCast(
inInfo1->Get(vtkDataObject::DATA_OBJECT()));
std::cout << "input1 has " << input1->GetNumberOfPoints() << " points." << std::endl;
vtkPolyData *output = vtkPolyData::SafeDownCast(
outInfo->Get(vtkDataObject::DATA_OBJECT()));
output->ShallowCopy(input0);
return 1;
}
CMakeLists.txt
cmake_minimum_required(VERSION 2.8)
PROJECT(vtkTestMultipleInputPortsFilter)
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
add_executable(vtkTestMultipleInputPortsFilter MACOSX_BUNDLE vtkTestMultipleInputPortsFilter.cxx)
target_link_libraries(vtkTestMultipleInputPortsFilter ${VTK_LIBRARIES})
Download and Build vtkTestMultipleInputPortsFilter
Click here to download vtkTestMultipleInputPortsFilter and its CMakeLists.txt file. Once the tarball vtkTestMultipleInputPortsFilter.tar has been downloaded and extracted,
cd vtkTestMultipleInputPortsFilter/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:
./vtkTestMultipleInputPortsFilter
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.