Actor2D
vtk-examples/Java/Images/Actor2D
Description¶
Example to demonstrate an actor that draws 2D data.
The object [vtkActor](https://www.vtk.org/doc/nightly/html/classvtkActor.html#details)2D is similar to vtkActor, but it is made to be used with two dimensional images and annotation.
[vtkActor](https://www.vtk.org/doc/nightly/html/classvtkActor.html#details)2D object has a position but does not use a transformation matrix like vtkActor and it has a reference to a vtkMapper2D object which does the rendering.
Question
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Code¶
Actor2D.java
import vtk.vtkNamedColors;
import vtk.vtkNativeLibrary;
import vtk.vtkRenderWindow;
import vtk.vtkRenderWindowInteractor;
import vtk.vtkRenderer;
import vtk.vtkPoints;
import vtk.vtkVertexGlyphFilter;
import vtk.vtkPolyData;
import vtk.vtkPolyDataMapper2D;
import vtk.vtkActor2D;
public class Actor2D
{
// -----------------------------------------------------------------
// 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 colors = new vtkNamedColors();
//For Actor Color
double actorColor[] = new double[4];
//Renderer Background Color
double Bgcolor[] = new double[4];
colors.GetColor("Lime", actorColor);
colors.GetColor("DarkSlateGray", Bgcolor);
vtkPoints Points = new vtkPoints();
Points.InsertNextPoint(10, 10, 0);
Points.InsertNextPoint(100, 100, 0);
Points.InsertNextPoint(200, 200, 0);
vtkPolyData PolyData = new vtkPolyData();
PolyData.SetPoints(Points);
vtkVertexGlyphFilter GlyphFilter = new vtkVertexGlyphFilter();
GlyphFilter.SetInputData(PolyData);
GlyphFilter.Update();
vtkPolyDataMapper2D Mapper = new vtkPolyDataMapper2D();
Mapper.SetInputConnection(GlyphFilter.GetOutputPort());
Mapper.Update();
vtkActor2D Actor = new vtkActor2D();
Actor.SetMapper(Mapper);
Actor.GetProperty().SetColor(actorColor);
Actor.GetProperty().SetPointSize(8);
// 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);
// Add the actor to the scene
ren.AddActor(Actor);
ren.SetBackground(Bgcolor);
renWin.SetSize(300, 300);
renWin.Render();
iren.Initialize();
iren.Start();
}
}