Assembly
VTKExamples/Cxx/Interaction/Assembly
Code¶
Assembly.cxx
#include <vtkSmartPointer.h> #include <vtkTransform.h> #include <vtkCubeSource.h> #include <vtkProperty.h> #include <vtkPolyDataMapper.h> #include <vtkActor.h> #include <vtkAssembly.h> #include <vtkRenderWindow.h> #include <vtkRenderer.h> #include <vtkRenderWindowInteractor.h> #include <vtkPolyData.h> #include <vtkSphereSource.h> #include <vtkOrientationMarkerWidget.h> #include <vtkAxesActor.h> #include <vtkPropAssembly.h> int main(int, char *[]) { // Create a sphere vtkSmartPointer<vtkSphereSource> sphereSource = vtkSmartPointer<vtkSphereSource>::New(); sphereSource->Update(); vtkSmartPointer<vtkPolyDataMapper> sphereMapper = vtkSmartPointer<vtkPolyDataMapper>::New(); sphereMapper->SetInputConnection(sphereSource->GetOutputPort()); vtkSmartPointer<vtkActor> sphereActor = vtkSmartPointer<vtkActor>::New(); sphereActor->SetMapper(sphereMapper); // Create a cube vtkSmartPointer<vtkCubeSource> cubeSource = vtkSmartPointer<vtkCubeSource>::New(); cubeSource->SetCenter(5.0, 0.0, 0.0); cubeSource->Update(); vtkSmartPointer<vtkPolyDataMapper> cubeMapper = vtkSmartPointer<vtkPolyDataMapper>::New(); cubeMapper->SetInputConnection(cubeSource->GetOutputPort()); vtkSmartPointer<vtkActor> cubeActor = vtkSmartPointer<vtkActor>::New(); cubeActor->SetMapper(cubeMapper); // Combine the sphere and cube into an assembly vtkSmartPointer<vtkAssembly> assembly = vtkSmartPointer<vtkAssembly>::New(); assembly->AddPart(sphereActor); assembly->AddPart(cubeActor); // Apply a transform to the whole assembly vtkSmartPointer<vtkTransform> transform = vtkSmartPointer<vtkTransform>::New(); transform->PostMultiply(); //this is the key line transform->Translate(5.0, 0, 0); assembly->SetUserTransform(transform); // Extract each actor from the assembly and change its opacity vtkSmartPointer<vtkPropCollection> collection = vtkSmartPointer<vtkPropCollection>::New(); assembly->GetActors(collection); collection->InitTraversal(); for(vtkIdType i = 0; i < collection->GetNumberOfItems(); i++) { vtkActor::SafeDownCast(collection->GetNextProp())->GetProperty()->SetOpacity(0.5); } // Visualization vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New(); vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New(); renderWindow->AddRenderer(renderer); vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor = vtkSmartPointer<vtkRenderWindowInteractor>::New(); renderWindowInteractor->SetRenderWindow(renderWindow); renderer->AddActor(assembly); renderer->SetBackground(1,1,1); // Background color white renderer->ResetCamera(); renderWindow->Render(); renderWindowInteractor->Start(); return EXIT_SUCCESS; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 2.8) PROJECT(Assembly) find_package(VTK REQUIRED) include(${VTK_USE_FILE}) add_executable(Assembly MACOSX_BUNDLE Assembly.cxx) target_link_libraries(Assembly ${VTK_LIBRARIES})
Download and Build Assembly¶
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 Assembly and its CMakeLists.txt file. Once the tarball Assembly.tar has been downloaded and extracted,
cd Assembly/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:
./Assembly
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.