ImageDataToPointSet
VTKExamples/Cxx/ImageData/ImageDataToPointSet
Code
ImageDataToPointSet.cxx
#include <vtkVersion.h>
#include <vtkImageData.h>
#include <vtkPoints.h>
#include <vtkImageDataToPointSet.h>
#include <vtkSmartPointer.h>
#include <vtkXMLStructuredGridWriter.h>
#include <vtkImageReader2.h>
#include <vtkImageReader2Factory.h>
#include <vtkStructuredGrid.h>
static void CreateImage(vtkImageData* image);
int main(int, char *[])
{
vtkSmartPointer<vtkImageData> image =
vtkSmartPointer<vtkImageData>::New();
CreateImage(image);
vtkSmartPointer<vtkImageDataToPointSet> imageDataToPointSet =
vtkSmartPointer<vtkImageDataToPointSet>::New();
#if VTK_MAJOR_VERSION <= 5
imageDataToPointSet->SetInputConnection(image->GetProducerPort());
#else
imageDataToPointSet->SetInputData(image);
#endif
imageDataToPointSet->Update();
vtkSmartPointer<vtkXMLStructuredGridWriter> writer =
vtkSmartPointer<vtkXMLStructuredGridWriter>::New();
writer->SetInputConnection(imageDataToPointSet->GetOutputPort());
writer->SetFileName("Test.vts");
writer->Write();
return EXIT_SUCCESS;
}
void CreateImage(vtkImageData* image)
{
// Create an image
image->SetDimensions(3,3,1);
#if VTK_MAJOR_VERSION <= 5
image->SetNumberOfScalarComponents(1);
image->SetScalarTypeToUnsignedChar();
#else
image->AllocateScalars(VTK_UNSIGNED_CHAR,1);
#endif
int dims[3];
image->GetDimensions(dims);
for(int i = 0; i < dims[0]; i++)
{
for(int j = 0; j < dims[1]; j++)
{
unsigned char* pixel = static_cast<unsigned char*>(image->GetScalarPointer(i,j,0));
pixel[0] = 1;
}
}
}
CMakeLists.txt
cmake_minimum_required(VERSION 2.8)
PROJECT(ImageDataToPointSet)
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
add_executable(ImageDataToPointSet MACOSX_BUNDLE ImageDataToPointSet.cxx)
target_link_libraries(ImageDataToPointSet ${VTK_LIBRARIES})
Download and Build ImageDataToPointSet
Click here to download ImageDataToPointSet and its CMakeLists.txt file. Once the tarball ImageDataToPointSet.tar has been downloaded and extracted,
cd ImageDataToPointSet/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:
./ImageDataToPointSet
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.