Frustum
Repository source: Frustum
Description¶
This example gets the frustum from a camera and displays it on the screen in Java
Other languages
See (Cxx), (Python), (PythonicAPI), (CSharp)
Question
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Code¶
Frustum.java
import vtk.vtkActor;
import vtk.vtkNativeLibrary;
import vtk.vtkDataSetMapper;
import vtk.vtkPlanes;
import vtk.vtkFrustumSource;
import vtk.vtkShrinkFilter;
import vtk.vtkProperty;
import vtk.vtkRenderWindow;
import vtk.vtkRenderWindowInteractor;
import vtk.vtkRenderer;
import vtk.vtkCamera;
import vtk.vtkNamedColors;
public class Frustum
{
//-----------------------------------------------------------------
//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("GreenYellow",ActorColor);
//Change Color Name to Use your own Color for Renderer Background
Color.GetColor("RoyalBlue",BgColor);
//Change Color Name to Use your own Color for BackFace Color
Color.GetColor("PeachPuff",BackColor);
// A virtual camera for 3D rendering
vtkCamera Camera = new vtkCamera();
Camera.SetClippingRange(0.1,0.4);
double PlanesArray[] = new double[24];
Camera.GetFrustumPlanes(1.0, PlanesArray);
vtkPlanes Planes = new vtkPlanes();
Planes.SetFrustumPlanes(PlanesArray);
//To create a frustum defined by a set of planes.
vtkFrustumSource FrustumSource = new vtkFrustumSource();
FrustumSource.ShowLinesOff();
FrustumSource.SetPlanes(Planes);
//shrink cells composing an arbitrary data set
vtkShrinkFilter shrink = new vtkShrinkFilter();
shrink.SetInputConnection(FrustumSource.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();
}
}