AngleWidget
VTKExamples/Cxx/Widgets/AngleWidget
Description
Click three points to create an angle. You can then drag the points around.
Code
AngleWidget.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 <vtkAngleWidget.h>
int main(int, char *[])
{
// A renderer and render window
vtkSmartPointer<vtkRenderer> renderer =
vtkSmartPointer<vtkRenderer>::New();
vtkSmartPointer<vtkRenderWindow> renderWindow =
vtkSmartPointer<vtkRenderWindow>::New();
renderWindow->AddRenderer(renderer);
// An interactor
vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
vtkSmartPointer<vtkRenderWindowInteractor>::New();
renderWindowInteractor->SetRenderWindow(renderWindow);
vtkSmartPointer<vtkAngleWidget> angleWidget =
vtkSmartPointer<vtkAngleWidget>::New();
angleWidget->SetInteractor(renderWindowInteractor);
angleWidget->CreateDefaultRepresentation();
// Render
renderWindow->Render();
renderWindowInteractor->Initialize();
renderWindow->Render();
angleWidget->On();
renderWindowInteractor->Start();
return EXIT_SUCCESS;
}
CMakeLists.txt
cmake_minimum_required(VERSION 2.8)
PROJECT(AngleWidget)
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
add_executable(AngleWidget MACOSX_BUNDLE AngleWidget.cxx)
target_link_libraries(AngleWidget ${VTK_LIBRARIES})
Download and Build AngleWidget
Click here to download AngleWidget and its CMakeLists.txt file. Once the tarball AngleWidget.tar has been downloaded and extracted,
cd AngleWidget/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:
./AngleWidget
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.