AngleWidget
vtk-examples/Cxx/Widgets/AngleWidget
Description¶
Click three points to create an angle. You can then drag the points around.
Other languages
See (Java)
Question
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Code¶
AngleWidget.cxx
#include <vtkActor.h>
#include <vtkAngleWidget.h>
#include <vtkNamedColors.h>
#include <vtkNew.h>
#include <vtkPolyData.h>
#include <vtkPolyDataMapper.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
#include <vtkSphereSource.h>
int main(int, char*[])
{
vtkNew<vtkNamedColors> colors;
// A renderer and render window
vtkNew<vtkRenderer> renderer;
vtkNew<vtkRenderWindow> renderWindow;
renderWindow->AddRenderer(renderer);
renderWindow->SetWindowName("AngleWidget");
// An interactor
vtkNew<vtkRenderWindowInteractor> renderWindowInteractor;
renderWindowInteractor->SetRenderWindow(renderWindow);
vtkNew<vtkAngleWidget> angleWidget;
angleWidget->SetInteractor(renderWindowInteractor);
angleWidget->CreateDefaultRepresentation();
// Render
renderer->SetBackground(colors->GetColor3d("MidnightBlue").GetData());
renderWindow->Render();
renderWindowInteractor->Initialize();
renderWindow->Render();
angleWidget->On();
renderWindowInteractor->Start();
return EXIT_SUCCESS;
}
CMakeLists.txt¶
cmake_minimum_required(VERSION 3.3 FATAL_ERROR)
project(AngleWidget)
find_package(VTK COMPONENTS
vtkCommonColor
vtkCommonCore
vtkCommonDataModel
vtkFiltersSources
vtkInteractionStyle
vtkInteractionWidgets
vtkRenderingContextOpenGL2
vtkRenderingCore
vtkRenderingFreeType
vtkRenderingGL2PSOpenGL2
vtkRenderingOpenGL2
QUIET
)
if (NOT VTK_FOUND)
message("Skipping AngleWidget: ${VTK_NOT_FOUND_MESSAGE}")
return ()
endif()
message (STATUS "VTK_VERSION: ${VTK_VERSION}")
if (VTK_VERSION VERSION_LESS "8.90.0")
# old system
include(${VTK_USE_FILE})
add_executable(AngleWidget MACOSX_BUNDLE AngleWidget.cxx )
target_link_libraries(AngleWidget PRIVATE ${VTK_LIBRARIES})
else ()
# include all components
add_executable(AngleWidget MACOSX_BUNDLE AngleWidget.cxx )
target_link_libraries(AngleWidget PRIVATE ${VTK_LIBRARIES})
# vtk_module_autoinit is needed
vtk_module_autoinit(
TARGETS AngleWidget
MODULES ${VTK_LIBRARIES}
)
endif ()
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
Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.