ImageToStructuredPoints
VTKExamples/Cxx/Images/ImageToStructuredPoints
Code¶
ImageToStructuredPoints.cxx
#include <vtkSmartPointer.h> #include <vtkImageData.h> #include <vtkStructuredPoints.h> #include <vtkImageCanvasSource2D.h> #include <vtkImageToStructuredPoints.h> #include <vtkDataSetMapper.h> #include <vtkActor.h> #include <vtkRenderWindow.h> #include <vtkRenderer.h> #include <vtkRenderWindowInteractor.h> int main(int, char *[]) { // Create an image vtkSmartPointer<vtkImageCanvasSource2D> source = vtkSmartPointer<vtkImageCanvasSource2D>::New(); source->SetExtent(0, 20, 0, 20, 0, 0); source->SetScalarTypeToUnsignedChar(); source->SetNumberOfScalarComponents(3); source->SetDrawColor(127,127,127); source->FillBox(0,20,0,20); source->SetDrawColor(255,127,127); source->FillBox(0,15,0,20); source->Update(); vtkSmartPointer<vtkImageToStructuredPoints> convertFilter = vtkSmartPointer<vtkImageToStructuredPoints>::New(); convertFilter->SetInputConnection(source->GetOutputPort()); convertFilter->Update(); // vtkStructuredPoints* structuredPoints = convertFilter->GetStructuredPointsOutput(); // Create a mapper and actor vtkSmartPointer<vtkDataSetMapper> mapper = vtkSmartPointer<vtkDataSetMapper>::New(); mapper->SetInputConnection(convertFilter->GetOutputPort()); vtkSmartPointer<vtkActor> actor = vtkSmartPointer<vtkActor>::New(); actor->SetMapper(mapper); // Create a renderer, render window, and interactor vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New(); vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New(); renderWindow->AddRenderer(renderer); vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor = vtkSmartPointer<vtkRenderWindowInteractor>::New(); renderWindowInteractor->SetRenderWindow(renderWindow); // Add the actor to the scene renderer->AddActor(actor); renderer->SetBackground(.3, .6, .3); // Background color green // Render and interact renderWindow->Render(); renderWindowInteractor->Start(); return EXIT_SUCCESS; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 2.8) PROJECT(ImageToStructuredPoints) find_package(VTK REQUIRED) include(${VTK_USE_FILE}) add_executable(ImageToStructuredPoints MACOSX_BUNDLE ImageToStructuredPoints.cxx) target_link_libraries(ImageToStructuredPoints ${VTK_LIBRARIES})
Download and Build ImageToStructuredPoints¶
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 Some tarballs may be missing or out-of-date.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 ImageToStructuredPoints and its CMakeLists.txt file. Once the tarball ImageToStructuredPoints.tar has been downloaded and extracted,
cd ImageToStructuredPoints/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:
./ImageToStructuredPoints
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.