ColorVertexLabels
VTKExamples/Cxx/Graphs/ColorVertexLabels
Code¶
ColorVertexLabels.cxx
#include <vtkSmartPointer.h> #include <vtkIntArray.h> #include <vtkDataSetAttributes.h> #include <vtkGraphLayoutView.h> #include <vtkMutableDirectedGraph.h> #include <vtkRenderWindowInteractor.h> #include <vtkRenderWindow.h> #include <vtkRenderedGraphRepresentation.h> #include <vtkTextProperty.h> int main(int, char *[]) { // Create a graph vtkSmartPointer<vtkMutableDirectedGraph> graph = vtkSmartPointer<vtkMutableDirectedGraph>::New(); vtkIdType v1 = graph->AddVertex(); vtkIdType v2 = graph->AddVertex(); graph->AddEdge(v1,v2); // Create an array for the vertex labels vtkSmartPointer<vtkIntArray> vertexIDs = vtkSmartPointer<vtkIntArray>::New(); vertexIDs->SetNumberOfComponents(1); vertexIDs->SetName("VertexIDs"); // Set the vertex labels vertexIDs->InsertNextValue(0); vertexIDs->InsertNextValue(1); // Add the array to the graph graph->GetVertexData()->AddArray(vertexIDs); vtkSmartPointer<vtkGraphLayoutView> graphLayoutView = vtkSmartPointer<vtkGraphLayoutView>::New(); graphLayoutView->AddRepresentationFromInput(graph); graphLayoutView->SetVertexLabelVisibility(true); vtkRenderedGraphRepresentation::SafeDownCast(graphLayoutView->GetRepresentation()) ->GetVertexLabelTextProperty()->SetColor(1,0,0); graphLayoutView->SetLayoutStrategyToSimple2D(); graphLayoutView->SetVertexLabelArrayName("VertexIDs"); graphLayoutView->ResetCamera(); graphLayoutView->Render(); graphLayoutView->GetInteractor()->Start(); return EXIT_SUCCESS; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 2.8) PROJECT(ColorVertexLabels) find_package(VTK REQUIRED) include(${VTK_USE_FILE}) add_executable(ColorVertexLabels MACOSX_BUNDLE ColorVertexLabels.cxx) target_link_libraries(ColorVertexLabels ${VTK_LIBRARIES})
Download and Build ColorVertexLabels¶
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The generation of tar files has not been ported to the new VTKExamples. Some tarballs may be missing or out-of-date.
Click here to download ColorVertexLabels and its CMakeLists.txt file. Once the tarball ColorVertexLabels.tar has been downloaded and extracted,
cd ColorVertexLabels/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:
./ColorVertexLabels
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.