Frustum
VTKExamples/Java/GeometricObjects/Frustum
Description¶
This example gets the frustum from a camera and displays it on the screen in Java
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(); } }