FillWindow
VTKExamples/Cxx/Images/FillWindow
Code¶
FillWindow.cxx
#include <vtkSmartPointer.h> #include <vtkImageData.h> #include <vtkCamera.h> #include <vtkImageMandelbrotSource.h> #include <vtkRenderWindow.h> #include <vtkRenderWindowInteractor.h> #include <vtkInteractorStyleImage.h> #include <vtkRenderer.h> #include <vtkImageSlice.h> #include <vtkImageSliceMapper.h> #include <vtkImageCast.h> #include <vtkImageMapper3D.h> int main(int, char *[]) { // Create an image vtkSmartPointer<vtkImageMandelbrotSource> mandelbrotSource = vtkSmartPointer<vtkImageMandelbrotSource>::New(); mandelbrotSource->Update(); vtkSmartPointer<vtkImageCast> castFilter = vtkSmartPointer<vtkImageCast>::New(); castFilter->SetInputConnection(mandelbrotSource->GetOutputPort()); castFilter->SetOutputScalarTypeToUnsignedChar(); castFilter->Update(); vtkSmartPointer<vtkImageSliceMapper> imageSliceMapper = vtkSmartPointer<vtkImageSliceMapper>::New(); imageSliceMapper->SetInputConnection(castFilter->GetOutputPort()); vtkSmartPointer<vtkImageSlice> imageSlice = vtkSmartPointer<vtkImageSlice>::New(); imageSlice->SetMapper(imageSliceMapper); int extent[6]; castFilter->GetOutput()->GetExtent(extent); double origin[3]; castFilter->GetOutput()->GetOrigin(origin); double spacing[3]; castFilter->GetOutput()->GetSpacing(spacing); // Setup renderer vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New(); renderer->AddActor(imageSlice); renderer->ResetCamera(); // Setup render window vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New(); renderWindow->AddRenderer(renderer); vtkCamera* camera = renderer->GetActiveCamera(); camera->ParallelProjectionOn(); renderer->SetBackground(1,0,0); float xc = origin[0] + 0.5*(extent[0] + extent[1])*spacing[0]; float yc = origin[1] + 0.5*(extent[2] + extent[3])*spacing[1]; // float xd = (extent[1] - extent[0] + 1)*spacing[0]; // not used float yd = (extent[3] - extent[2] + 1)*spacing[1]; float d = camera->GetDistance(); camera->SetParallelScale(0.5f*static_cast<float>(yd)); camera->SetFocalPoint(xc,yc,0.0); camera->SetPosition(xc,yc,+d); // Setup render window interactor vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor = vtkSmartPointer<vtkRenderWindowInteractor>::New(); vtkSmartPointer<vtkInteractorStyleImage> style = vtkSmartPointer<vtkInteractorStyleImage>::New(); renderWindowInteractor->SetInteractorStyle(style); // Render and start interaction renderWindowInteractor->SetRenderWindow(renderWindow); renderWindowInteractor->Initialize(); renderWindowInteractor->Start(); return EXIT_SUCCESS; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 2.8) PROJECT(FillWindow) find_package(VTK REQUIRED) include(${VTK_USE_FILE}) add_executable(FillWindow MACOSX_BUNDLE FillWindow.cxx) target_link_libraries(FillWindow ${VTK_LIBRARIES})
Download and Build FillWindow¶
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 FillWindow and its CMakeLists.txt file. Once the tarball FillWindow.tar has been downloaded and extracted,
cd FillWindow/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:
./FillWindow
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.