ShrinkCube
vtk-examples/Java/GeometricObjects/ShrinkCube
Description¶
Generates a cube using vtkCubeSource, then a shrink filter is applied.
vtkShrinkFilter object shrinks cells composing an arbitrary data set towards their centroid. The centroid of a cell is computed as the average position of the cell points. Shrinking results in disconnecting the cells from one another.
Question
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Code¶
ShrinkCube.java
import vtk.vtkActor;
import vtk.vtkNativeLibrary;
import vtk.vtkDataSetMapper;
import vtk.vtkCubeSource;
import vtk.vtkShrinkFilter;
import vtk.vtkProperty;
import vtk.vtkRenderWindow;
import vtk.vtkRenderWindowInteractor;
import vtk.vtkRenderer;
import vtk.vtkNamedColors;
public class Cube
{
// -----------------------------------------------------------------
// 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 static void main(String s[])
{
vtkNamedColors Color = new vtkNamedColors();
//For Actor Color
double ActorColor[] = new double[4];
//Renderer Background Color
double BgColor[] = new double[4];
//BackFace color
double BackColor[] = new double[4];
//Change Color Name to Use your own Color for Change Actor Color
Color.GetColor("SpringGreen",ActorColor);
//Change Color Name to Use your own Color for Renderer Background
Color.GetColor("Red",BgColor);
//Change Color Name to Use your own Color for BackFace Color
Color.GetColor("Yellow",BackColor);
// Create a cube.
vtkCubeSource Cube = new vtkCubeSource();
//shrink cells composing an arbitrary data set
vtkShrinkFilter shrink = new vtkShrinkFilter();
shrink.SetInputConnection(Cube.GetOutputPort());
shrink.SetShrinkFactor(.9);
//Create a Mapper and Actor
vtkDataSetMapper Mapper = new vtkDataSetMapper();
Mapper.SetInputConnection(shrink.GetOutputPort());
vtkProperty Back = new vtkProperty();
Back.SetColor(BackColor);
vtkActor Actor = new vtkActor();
Actor.SetMapper(Mapper);
Actor.GetProperty().EdgeVisibilityOn();
Actor.GetProperty().SetColor(ActorColor);
Actor.SetBackfaceProperty(Back);
//Create the renderer, render window and interactor.
vtkRenderer ren = new vtkRenderer();
vtkRenderWindow renWin = new vtkRenderWindow();
renWin.AddRenderer(ren);
vtkRenderWindowInteractor iren = new vtkRenderWindowInteractor();
iren.SetRenderWindow(renWin);
// Visualise the arrow
ren.AddActor(Actor);
ren.SetBackground(BgColor);
renWin.SetSize(300, 300);
renWin.Render();
iren.Initialize();
iren.Start();
}
}