RegularPolygonSource
VTKExamples/Cxx/GeometricObjects/RegularPolygonSource
Description¶
This example creates a pentagon.
Code¶
RegularPolygonSource.cxx
#include <vtkActor.h> #include <vtkNamedColors.h> #include <vtkPolyData.h> #include <vtkPolyDataMapper.h> #include <vtkProperty.h> #include <vtkRegularPolygonSource.h> #include <vtkRenderer.h> #include <vtkRenderWindow.h> #include <vtkRenderWindowInteractor.h> #include <vtkShrinkPolyData.h> #include <vtkSmartPointer.h> int main(int , char *[]) { vtkSmartPointer<vtkNamedColors> colors = vtkSmartPointer<vtkNamedColors>::New(); // Create a pentagon vtkSmartPointer<vtkRegularPolygonSource> polygonSource = vtkSmartPointer<vtkRegularPolygonSource>::New(); polygonSource->SetNumberOfSides(5); polygonSource->SetRadius(5); polygonSource->SetCenter(0,0,0); vtkSmartPointer<vtkShrinkPolyData> shrink = vtkSmartPointer<vtkShrinkPolyData>::New(); shrink->SetInputConnection(polygonSource->GetOutputPort()); shrink->SetShrinkFactor(.9); vtkSmartPointer<vtkPolyDataMapper> mapper = vtkSmartPointer<vtkPolyDataMapper>::New(); mapper->SetInputConnection(shrink->GetOutputPort()); vtkSmartPointer<vtkProperty> back = vtkSmartPointer<vtkProperty>::New(); back->SetColor(colors->GetColor3d("Tomato").GetData()); vtkSmartPointer<vtkActor> actor = vtkSmartPointer<vtkActor>::New(); actor->SetMapper(mapper); actor->GetProperty()->EdgeVisibilityOn(); actor->GetProperty()->SetLineWidth(5); actor->GetProperty()->SetColor(colors->GetColor3d("Banana").GetData()); actor->SetBackfaceProperty(back); vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New(); vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New(); renderWindow->SetWindowName("Regular Polygon Source"); renderWindow->AddRenderer(renderer); vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor = vtkSmartPointer<vtkRenderWindowInteractor>::New(); renderWindowInteractor->SetRenderWindow(renderWindow); renderer->AddActor(actor); renderer->SetBackground(colors->GetColor3d("Silver").GetData()); renderWindow->Render(); renderWindowInteractor->Start(); return EXIT_SUCCESS; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 2.8) PROJECT(RegularPolygonSource) find_package(VTK REQUIRED) include(${VTK_USE_FILE}) add_executable(RegularPolygonSource MACOSX_BUNDLE RegularPolygonSource.cxx ) target_link_libraries(RegularPolygonSource ${VTK_LIBRARIES})
Download and Build RegularPolygonSource¶
Click here to download RegularPolygonSource and its CMakeLists.txt file. Once the tarball RegularPolygonSource.tar has been downloaded and extracted,
cd RegularPolygonSource/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:
./RegularPolygonSource
WINDOWS USERS
Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.