RibbonFilter
Repository source: RibbonFilter
Description¶
Java Program which demonstrates how to draw a flat surface (a ribbon) along a line.
Other languages
See (Cxx)
Question
If you have a question about this example, please use the VTK Discourse Forum
Code¶
RibbonFilter.java
import vtk.vtkActor;
import vtk.vtkNativeLibrary;
import vtk.vtkPoints;
import vtk.vtkPolyData;
import vtk.vtkPolyDataMapper;
import vtk.vtkRenderWindow;
import vtk.vtkRenderWindowInteractor;
import vtk.vtkRenderer;
import vtk.vtkMath;
import vtk.vtkCellArray;
import vtk.vtkRibbonFilter;
import vtk.vtkNamedColors;
public class RibbonFilter
{
// -----------------------------------------------------------------
// 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 Line Actor Color
double LineActorColor[] = 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("Sienna",LineActorColor);
//Change Color Name to Use your own Color for Renderer Background
Color.GetColor("SteelBlue",BgColor);
// No. of vertices
int nV = 256;
double vX, vY, vZ;
// Spiral radius
double rS = 2;
// No. of spiral cycles
int nCyc = 3;
// Height
double h = 10;
int i;
// Create points and cells for a spiral
vtkPoints Points = new vtkPoints();
vtkMath findPI = new vtkMath();
for(i = 0; i < nV; i++)
{
// Spiral coordinates
vX = rS * Math.cos(2 * findPI.Pi()* nCyc * i / (nV - 1));
vY = rS * Math.sin(2 * findPI.Pi() * nCyc * i / (nV - 1));
vZ = h * i / nV;
Points.InsertPoint(i, vX, vY, vZ);
}
vtkCellArray Lines = new vtkCellArray();
Lines.InsertNextCell(nV);
for (i = 0; i < nV; i++)
{
Lines.InsertCellPoint(i);
}
vtkPolyData PolyData = new vtkPolyData();
PolyData.SetPoints(Points);
PolyData.SetLines(Lines);
// Create a mapper and actor
vtkPolyDataMapper LineMapper = new vtkPolyDataMapper();
LineMapper.SetInputData(PolyData);
vtkActor LineActor = new vtkActor();
LineActor.SetMapper(LineMapper);
LineActor.GetProperty().SetColor(LineActorColor);
LineActor.GetProperty().SetLineWidth(3);
// Create a ribbon around the line
vtkRibbonFilter RibbonFilter = new vtkRibbonFilter();
RibbonFilter.SetInputData(PolyData);
RibbonFilter.SetWidth(0.4);
// Create a mapper and actor for Ribbon
vtkPolyDataMapper RibbonMapper = new vtkPolyDataMapper();
RibbonMapper.SetInputConnection(RibbonFilter.GetOutputPort());
vtkActor RibbonActor = new vtkActor();
RibbonActor.SetMapper(RibbonMapper);
// 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(LineActor);
ren.AddActor(RibbonActor);
ren.SetBackground(BgColor);
ren.GetActiveCamera().Azimuth(40);
ren.GetActiveCamera().Elevation(30);
ren.ResetCamera();
ren.ResetCameraClippingRange();
renWin.SetSize(300,300);
renWin.Render();
iren.Initialize();
iren.Start();
}
}