TransformActorCollection
VTKExamples/Cxx/Visualization/TransformActorCollection
Code
TransformActorCollection.cxx
#include <vtkSmartPointer.h>
#include <vtkConeSource.h>
#include <vtkSphereSource.h>
#include <vtkCubeSource.h>
#include <vtkTransform.h>
#include <vtkPolyData.h>
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>
#include <vtkRenderWindow.h>
#include <vtkRenderer.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkActorCollection.h>
int main(int, char *[])
{
vtkSmartPointer<vtkRenderer> renderer =
vtkSmartPointer<vtkRenderer>::New();
// Create a cone
vtkSmartPointer<vtkConeSource> coneSource =
vtkSmartPointer<vtkConeSource>::New();
coneSource->SetHeight(3);
vtkSmartPointer<vtkPolyDataMapper> coneMapper =
vtkSmartPointer<vtkPolyDataMapper>::New();
coneMapper->SetInputConnection(coneSource->GetOutputPort());
vtkSmartPointer<vtkActor> coneActor =
vtkSmartPointer<vtkActor>::New();
coneActor->SetMapper(coneMapper);
// Create a cube
vtkSmartPointer<vtkCubeSource> cubeSource =
vtkSmartPointer<vtkCubeSource>::New();
vtkSmartPointer<vtkPolyDataMapper> cubeMapper =
vtkSmartPointer<vtkPolyDataMapper>::New();
cubeMapper->SetInputConnection(cubeSource->GetOutputPort());
vtkSmartPointer<vtkActor> cubeActor =
vtkSmartPointer<vtkActor>::New();
cubeActor->SetMapper(cubeMapper);
// Create a sphere
vtkSmartPointer<vtkSphereSource> sphereSource =
vtkSmartPointer<vtkSphereSource>::New();
vtkSmartPointer<vtkPolyDataMapper> sphereMapper =
vtkSmartPointer<vtkPolyDataMapper>::New();
sphereMapper->SetInputConnection(sphereSource->GetOutputPort());
vtkSmartPointer<vtkActor> sphereActor =
vtkSmartPointer<vtkActor>::New();
sphereActor->SetMapper(sphereMapper);
renderer->AddActor(sphereActor);
vtkSmartPointer<vtkActorCollection> actorCollection =
vtkSmartPointer<vtkActorCollection>::New();
actorCollection->AddItem(cubeActor);
actorCollection->AddItem(coneActor);
actorCollection->InitTraversal();
vtkSmartPointer<vtkTransform> transform =
vtkSmartPointer<vtkTransform>::New();
transform->PostMultiply(); //this is the key line
transform->Translate(5.0, 0, 0);
//actorCollection->SetUserTransform(transform);
for(vtkIdType i = 0; i < actorCollection->GetNumberOfItems(); i++)
{
vtkActor* actor = actorCollection->GetNextActor();
actor->SetUserTransform(transform);
renderer->AddActor(actor);
}
// Create a renderer, render window, and interactor
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->SetBackground(.2, .3, .4);
// Render and interact
renderWindow->Render();
renderWindowInteractor->Start();
return EXIT_SUCCESS;
}
CMakeLists.txt
cmake_minimum_required(VERSION 2.8)
PROJECT(TransformActorCollection)
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
add_executable(TransformActorCollection MACOSX_BUNDLE TransformActorCollection.cxx)
target_link_libraries(TransformActorCollection ${VTK_LIBRARIES})
Download and Build TransformActorCollection
Click here to download TransformActorCollection and its CMakeLists.txt file. Once the tarball TransformActorCollection.tar has been downloaded and extracted,
cd TransformActorCollection/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:
./TransformActorCollection
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.