VisualizeGraph
VTKExamples/Cxx/Graphs/VisualizeGraph
Description¶
This example shows how to construct a graph and visualize it. You can select edges and vertices with the mouse.
Question
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Code¶
VisualizeGraph.cxx
#include <vtkSmartPointer.h> #include <vtkGraphLayoutStrategy.h> #include <vtkGraphLayoutView.h> #include <vtkGraphWriter.h> #include <vtkMutableUndirectedGraph.h> #include <vtkRenderWindowInteractor.h> #include <vtkSimple2DLayoutStrategy.h> int main(int, char *[]) { vtkSmartPointer<vtkMutableUndirectedGraph> g = vtkSmartPointer<vtkMutableUndirectedGraph>::New(); vtkIdType v1 = g->AddVertex(); vtkIdType v2 = g->AddVertex(); g->AddEdge(v1, v2); g->AddEdge(v1, v2); vtkSmartPointer<vtkGraphLayoutView> graphLayoutView = vtkSmartPointer<vtkGraphLayoutView>::New(); graphLayoutView->AddRepresentationFromInput(g); graphLayoutView->SetLayoutStrategy("Simple 2D"); graphLayoutView->ResetCamera(); graphLayoutView->Render(); dynamic_cast<vtkSimple2DLayoutStrategy*>(graphLayoutView->GetLayoutStrategy())->SetRandomSeed(0); graphLayoutView->GetInteractor()->Start(); return EXIT_SUCCESS; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 3.3 FATAL_ERROR) project(VisualizeGraph) find_package(VTK COMPONENTS vtkCommonCore vtkCommonDataModel vtkIOLegacy vtkInfovisLayout vtkInteractionStyle vtkRenderingContextOpenGL2 vtkRenderingCore vtkRenderingFreeType vtkRenderingGL2PSOpenGL2 vtkRenderingOpenGL2 vtkViewsInfovis QUIET) if (NOT VTK_FOUND) message("Skipping VisualizeGraph: ${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(VisualizeGraph MACOSX_BUNDLE VisualizeGraph.cxx ) target_link_libraries(VisualizeGraph PRIVATE ${VTK_LIBRARIES}) else () # include all components add_executable(VisualizeGraph MACOSX_BUNDLE VisualizeGraph.cxx ) target_link_libraries(VisualizeGraph PRIVATE ${VTK_LIBRARIES}) # vtk_module_autoinit is needed vtk_module_autoinit( TARGETS VisualizeGraph MODULES ${VTK_LIBRARIES} ) endif ()
Download and Build VisualizeGraph¶
Click here to download VisualizeGraph and its CMakeLists.txt file. Once the tarball VisualizeGraph.tar has been downloaded and extracted,
cd VisualizeGraph/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:
./VisualizeGraph
WINDOWS USERS
Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.