Vertex
VTKExamples/Java/GeometricObjects/Vertex
Java Program to Display a Vertex. The vertex is a primary zero-dimensional cell. It is defined by a single point.
Author: Bharatesh Chakravarthi Affiliation: VE Lab, Chung Ang University, Seoul, South Korea.
Code¶
Vertex.java
import java.awt.BorderLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.SwingUtilities; import vtk.vtkActor; import vtk.vtkNativeLibrary; import vtk.vtkPanel; import vtk.vtkPoints; import vtk.vtkVertex; import vtk.vtkCellArray; import vtk.vtkPolyData; import vtk.vtkPolyDataMapper; import vtk.vtkNamedColors; public class Vertex extends JPanel implements ActionListener { private static final long serialVersionUID = 1L; private vtkPanel renWin; private JButton exitButton; // ----------------------------------------------------------------- // Load VTK library and print which library was not properly loaded static { if (!vtkNativeLibrary.LoadAllNativeLibraries()) { for (vtkNativeLibrary lib : vtkNativeLibrary.values()) { if (!lib.IsLoaded()) { System.out.println(lib.GetLibraryName() + " not loaded"); } } } vtkNativeLibrary.DisableOutputWindow(null); } // ----------------------------------------------------------------- public Vertex() { super(new BorderLayout()); vtkNamedColors Color = new vtkNamedColors(); //For Actor Color double ActorColor[] = new double[4]; //Renderer Background Color double BgColor[] = new double[4]; //Change Color Name to Use your own Color for Change Actor Color Color.GetColor("OrangeRed",ActorColor); //Change Color Name to Use your own Color for Renderer Background Color.GetColor("DarkSlateGray",BgColor); //Create a 3D Point vtkPoints Points = new vtkPoints(); Points.InsertNextPoint(0.0,0.0,0.0); //Create A Vertex Which in turn represents a 3D point vtkVertex Vertex = new vtkVertex(); Vertex.GetPointIds().SetId(0, 0); //Create a Cell Array - a raw integer list that explicitly represents cell connectivity vtkCellArray Vertices = new vtkCellArray(); Vertices.InsertNextCell(Vertex); //Create a PolyData which represents a geometric structure //consisting of vertices, lines, polygons, and/or triangle strips vtkPolyData PolyData = new vtkPolyData(); PolyData.SetPoints(Points); PolyData.SetVerts(Vertices); //Create a Mapper and Actor vtkPolyDataMapper Mapper = new vtkPolyDataMapper(); Mapper.SetInputData(PolyData); vtkActor Actor = new vtkActor(); Actor.SetMapper(Mapper); Actor.GetProperty().SetPointSize(15); Actor.GetProperty().SetColor(ActorColor); renWin = new vtkPanel(); renWin.GetRenderer().AddActor(Actor); renWin.resetCamera(); renWin.GetRenderer().SetBackground(BgColor); renWin.resetCamera(); renWin.resetCameraClippingRange(); renWin.GetRenderer().GetActiveCamera().Azimuth(30); renWin.GetRenderer().GetActiveCamera().Elevation(30); // Add Java UI components exitButton = new JButton("Exit"); exitButton.addActionListener(this); add(renWin, BorderLayout.CENTER); add(exitButton, BorderLayout.SOUTH); } /** An ActionListener that listens to the button. */ public void actionPerformed(ActionEvent e) { if (e.getSource().equals(exitButton)) { System.exit(0); } } public static void main(String s[]) { SwingUtilities.invokeLater(new Runnable() { public void run() { JFrame frame = new JFrame("Vertex"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.getContentPane().setLayout(new BorderLayout()); frame.getContentPane().add(new Vertex(), BorderLayout.CENTER); frame.setSize(400, 400); frame.setLocationRelativeTo(null); frame.setVisible(true); } }); } }