BiDimensionalWidget
VTKExamples/Cxx/Widgets/BiDimensionalWidget
Code
BiDimensionalWidget.cxx
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>
#include <vtkRenderWindow.h>
#include <vtkRenderer.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkPolyData.h>
#include <vtkSmartPointer.h>
#include <vtkSphereSource.h>
#include <vtkBiDimensionalWidget.h>
#include <vtkBiDimensionalRepresentation2D.h>
#include <vtkCommand.h>
class vtkBiDimensionalCallback : public vtkCommand
{
public:
static vtkBiDimensionalCallback *New()
{
return new vtkBiDimensionalCallback;
}
virtual void Execute(vtkObject *caller, unsigned long, void*)
{
vtkBiDimensionalWidget *biDimensionalWidget =
reinterpret_cast<vtkBiDimensionalWidget*>(caller);
vtkBiDimensionalRepresentation2D* representation =
static_cast<vtkBiDimensionalRepresentation2D*>(biDimensionalWidget->GetRepresentation());
double p1[3];
representation->GetPoint1DisplayPosition(p1);
double p2[3];
representation->GetPoint1DisplayPosition(p2);
double p3[3];
representation->GetPoint1DisplayPosition(p3);
double p4[3];
representation->GetPoint1DisplayPosition(p4);
// Display one of the points, just so we know it's working
std::cout << "P1: " << p1[0] << " " << p1[1] << " " << p1[2] << std::endl;
}
vtkBiDimensionalCallback(){}
};
int main(int, char *[])
{
vtkSmartPointer<vtkSphereSource> sphereSource =
vtkSmartPointer<vtkSphereSource>::New();
sphereSource->Update();
// Create a mapper and actor
vtkSmartPointer<vtkPolyDataMapper> mapper =
vtkSmartPointer<vtkPolyDataMapper>::New();
mapper->SetInputConnection(sphereSource->GetOutputPort());
vtkSmartPointer<vtkActor> actor =
vtkSmartPointer<vtkActor>::New();
actor->SetMapper(mapper);
// A renderer and render window
vtkSmartPointer<vtkRenderer> renderer =
vtkSmartPointer<vtkRenderer>::New();
vtkSmartPointer<vtkRenderWindow> renderWindow =
vtkSmartPointer<vtkRenderWindow>::New();
renderWindow->AddRenderer(renderer);
renderer->AddActor(actor);
// An interactor
vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
vtkSmartPointer<vtkRenderWindowInteractor>::New();
renderWindowInteractor->SetRenderWindow(renderWindow);
vtkSmartPointer<vtkBiDimensionalWidget> biDimensionalWidget =
vtkSmartPointer<vtkBiDimensionalWidget>::New();
biDimensionalWidget->SetInteractor(renderWindowInteractor);
biDimensionalWidget->CreateDefaultRepresentation();
vtkSmartPointer<vtkBiDimensionalCallback> biDimensionalCallback =
vtkSmartPointer<vtkBiDimensionalCallback>::New();
biDimensionalWidget->AddObserver(vtkCommand::InteractionEvent,biDimensionalCallback);
// Render an image (lights and cameras are created automatically)
renderWindow->Render();
renderWindowInteractor->Initialize();
renderWindow->Render();
biDimensionalWidget->On();
// Begin mouse interaction
renderWindowInteractor->Start();
return EXIT_SUCCESS;
}
CMakeLists.txt
cmake_minimum_required(VERSION 2.8)
PROJECT(BiDimensionalWidget)
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
add_executable(BiDimensionalWidget MACOSX_BUNDLE BiDimensionalWidget.cxx)
target_link_libraries(BiDimensionalWidget ${VTK_LIBRARIES})
Download and Build BiDimensionalWidget
Click here to download BiDimensionalWidget and its CMakeLists.txt file. Once the tarball BiDimensionalWidget.tar has been downloaded and extracted,
cd BiDimensionalWidget/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:
./BiDimensionalWidget
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.