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¶
Danger
The generation of tar files has not been ported to the new VTKExamples. Some tarballs may be missing or out-of-date.
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.