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/*=========================================================================
Program: Visualization Toolkit
Module: CreateTree.cxx
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
//
// This example...
//
#include "vtkDataSetAttributes.h"
#include "vtkGraphLayoutView.h"
#include "vtkMutableDirectedGraph.h"
#include "vtkRandomGraphSource.h"
#include "vtkRenderer.h"
#include "vtkRenderWindow.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkStringArray.h"
#include "vtkTree.h"
#include "vtkViewTheme.h"
int main(int, char*[])
{
vtkMutableDirectedGraph* graph = vtkMutableDirectedGraph::New();
vtkIdType a = graph->AddVertex();
vtkIdType b = graph->AddChild(a);
vtkIdType c = graph->AddChild(a);
vtkIdType d = graph->AddChild(b);
vtkIdType e = graph->AddChild(c);
vtkIdType f = graph->AddChild(c);
vtkStringArray* labels = vtkStringArray::New();
labels->SetName("Label");
labels->InsertValue(a, "a");
labels->InsertValue(b, "b");
labels->InsertValue(c, "c");
labels->InsertValue(d, "d");
labels->InsertValue(e, "e");
labels->InsertValue(f, "f");
graph->GetVertexData()->AddArray(labels);
vtkTree* tree = vtkTree::New();
bool validTree = tree->CheckedShallowCopy(graph);
if (!validTree)
{
std::cout << "Invalid tree" << std::endl;
graph->Delete();
labels->Delete();
tree->Delete();
return EXIT_FAILURE;
}
vtkGraphLayoutView* view = vtkGraphLayoutView::New();
view->SetRepresentationFromInput(tree);
vtkViewTheme* theme = vtkViewTheme::CreateMellowTheme();
view->ApplyViewTheme(theme);
theme->Delete();
view->SetVertexColorArrayName("VertexDegree");
view->SetColorVertices(true);
view->SetVertexLabelArrayName("Label");
view->SetVertexLabelVisibility(true);
view->ResetCamera();
view->GetInteractor()->Start();
graph->Delete();
labels->Delete();
tree->Delete();
view->Delete();
return EXIT_SUCCESS;;
}
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