ConstructTree
VTKExamples/Cxx/Graphs/ConstructTree
Code
ConstructTree.cxx
#include <vtkSmartPointer.h>
#include <vtkGraphLayoutView.h>
#include <vtkMutableDirectedGraph.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkTree.h>
int main (int, char *[] )
{
vtkSmartPointer<vtkMutableDirectedGraph> graph =
vtkSmartPointer<vtkMutableDirectedGraph>::New();
vtkIdType v1 = graph->AddVertex();
vtkIdType v2 = graph->AddChild(v1);
graph->AddChild(v1);
graph->AddChild(v2);
/*
//equivalent to:
vtkIdType V1 = g->AddVertex();
vtkIdType V2 = g->AddVertex();
vtkIdType V3 = g->AddVertex();
vtkIdType V4 = g->AddVertex();
g->AddEdge ( V1, V2 );
g->AddEdge ( V1, V3 );
g->AddEdge ( V2, V4 );
*/
vtkSmartPointer<vtkTree> tree =
vtkSmartPointer<vtkTree>::New();
bool success = tree->CheckedShallowCopy(graph);
std::cout << "Success? " << success << std::endl;
vtkSmartPointer<vtkGraphLayoutView> treeLayoutView =
vtkSmartPointer<vtkGraphLayoutView>::New();
treeLayoutView->AddRepresentationFromInput(tree);
treeLayoutView->SetLayoutStrategyToTree();
treeLayoutView->ResetCamera();
treeLayoutView->Render();
treeLayoutView->GetInteractor()->Start();
return EXIT_SUCCESS;
}
CMakeLists.txt
cmake_minimum_required(VERSION 2.8)
PROJECT(ConstructTree)
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
add_executable(ConstructTree MACOSX_BUNDLE ConstructTree.cxx)
target_link_libraries(ConstructTree ${VTK_LIBRARIES})
Download and Build ConstructTree
Click here to download ConstructTree and its CMakeLists.txt file. Once the tarball ConstructTree.tar has been downloaded and extracted,
cd ConstructTree/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:
./ConstructTree
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.