PieChart
VTKExamples/Cxx/Plotting/PieChart
Code¶
PieChart.cxx
#include <vtkRenderer.h> #include <vtkRenderWindow.h> #include <vtkSmartPointer.h> #include <vtkChartPie.h> #include <vtkPlot.h> #include <vtkPlotPie.h> #include <vtkTable.h> #include <vtkIntArray.h> #include <vtkStringArray.h> #include <vtkContextView.h> #include <vtkContextScene.h> #include <vtkRenderWindowInteractor.h> #include <vtkColorSeries.h> int NUM_ITEMS = 5; static int data[] = {77938,9109,2070,12806,19514}; //static int data[] = {200,200,200,200,200}; static const char *labels[] = {"Books","New and Popular","Periodical","Audiobook","Video"}; int main(int, char*[]) { // Set up a 2D scene, add an XY chart to it vtkSmartPointer<vtkContextView> view = vtkSmartPointer<vtkContextView>::New(); view->GetRenderer()->SetBackground(1.0, 1.0, 1.0); view->GetRenderWindow()->SetSize(600, 350); vtkSmartPointer<vtkChartPie> chart = vtkSmartPointer<vtkChartPie>::New(); view->GetScene()->AddItem(chart); // Create a table with some points in it... vtkSmartPointer<vtkTable> table = vtkSmartPointer<vtkTable>::New(); vtkSmartPointer<vtkIntArray> arrData = vtkSmartPointer<vtkIntArray>::New(); vtkSmartPointer<vtkStringArray> labelArray = vtkSmartPointer<vtkStringArray>::New(); arrData->SetName("2008 Circulation"); for (int i = 0; i < NUM_ITEMS; i++) { arrData->InsertNextValue(data[i]); labelArray->InsertNextValue(labels[i]); } table->AddColumn(arrData); // Create a color series to use with our stacks. vtkSmartPointer<vtkColorSeries> colorSeries = vtkSmartPointer<vtkColorSeries>::New(); colorSeries->SetColorScheme(vtkColorSeries::WARM); // Add multiple line plots, setting the colors etc vtkPlotPie *pie = vtkPlotPie::SafeDownCast(chart->AddPlot(0)); pie->SetColorSeries(colorSeries); pie->SetInputData(table); pie->SetInputArray(0,"2008 Circulation"); pie->SetLabels(labelArray); chart->SetShowLegend(true); chart->SetTitle("Circulation 2008"); //Finally render the scene and compare the image to a reference image view->GetRenderWindow()->SetMultiSamples(0); view->GetInteractor()->Initialize(); view->GetInteractor()->Start(); return EXIT_SUCCESS; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 3.3 FATAL_ERROR) project(PieChart) find_package(VTK COMPONENTS vtkChartsCore vtkCommonColor vtkCommonCore vtkCommonDataModel vtkInteractionStyle vtkRenderingContext2D vtkRenderingContextOpenGL2 vtkRenderingCore vtkRenderingFreeType vtkRenderingOpenGL2 vtkViewsContext2D QUIET) if (NOT VTK_FOUND) message("Skipping PieChart: ${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(PieChart MACOSX_BUNDLE PieChart.cxx ) target_link_libraries(PieChart PRIVATE ${VTK_LIBRARIES}) else () # include all components add_executable(PieChart MACOSX_BUNDLE PieChart.cxx ) target_link_libraries(PieChart PRIVATE ${VTK_LIBRARIES}) # vtk_module_autoinit is needed vtk_module_autoinit( TARGETS PieChart MODULES ${VTK_LIBRARIES} ) endif ()
Download and Build PieChart¶
Click here to download PieChart and its CMakeLists.txt file. Once the tarball PieChart.tar has been downloaded and extracted,
cd PieChart/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:
./PieChart
WINDOWS USERS
Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.