Merge pull request #396 from chakravarthi589/Add_WrapTo

Add wrap to

src/Java.md

@@ -36,6 +36,7 @@ It would be appreciated if there are any Java VTK experts who could convert any
 [Delaunay2D](/Java/Filtering/Delaunay2D) | vtkDelaunay2D | An example to generate set of points and to triangulate using Delaunay2D
 [Glyph2D](/Java/Filtering/Glyph2D) | vtkGlyph2D | Example to copy a polydata to everypoint in the input set. 
 [Glyph3D](/Java/Filtering/Glyph3D) | vtkGlyph3D | This example applies an object at every point using vtkGlyph3D
+[WarpTo](/Java/Filtering/WarpTo) | vtkWarpTo | Deform geometry by warping towards a point
 
 ## GeometricObjects
 

src/Java/Filtering/WarpTo.java

+import vtk.vtkRenderWindow;
+import vtk.vtkActor;
+import vtk.vtkLineSource;
+import vtk.vtkTubeFilter;
+import vtk.vtkWarpTo;
+import vtk.vtkNativeLibrary;
+import vtk.vtkPolyDataMapper;
+import vtk.vtkNamedColors;
+import vtk.vtkRenderer;
+import vtk.vtkRenderWindowInteractor;
+
+public class WarpTo 
+{
+
+  //-----------------------------------------------------------------
+  // 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 args[]) 
+  {
+    vtkNamedColors colors = new vtkNamedColors();
+
+    //For Actor Color
+    double actorColor[] = new double[4];
+    //Renderer Background Color
+    double Bgcolor[] = new double[4];
+
+    colors.GetColor("Silver", actorColor);
+    colors.GetColor("MidnightBlue", Bgcolor);
+
+    //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);
+
+    //Create a line
+    vtkLineSource LineSource = new vtkLineSource();
+    LineSource.SetPoint1(0, 0, 0);
+    LineSource.SetPoint2(0, 1, 0);
+    LineSource.SetResolution(20);
+    LineSource.Update();
+
+    //Create a tube (cylinder) around the line
+    vtkTubeFilter TubeFilter = new vtkTubeFilter();
+    TubeFilter.SetInputConnection(LineSource.GetOutputPort());
+    TubeFilter.SetRadius(0.01);
+    TubeFilter.SetNumberOfSides(50);
+    TubeFilter.Update();
+
+    vtkWarpTo WarpTo = new vtkWarpTo();
+    WarpTo.SetInputConnection(TubeFilter.GetOutputPort());
+    WarpTo.SetPosition(10, 1, 0);
+    WarpTo.SetScaleFactor(5);
+    WarpTo.AbsoluteOn();
+
+    //Create a Mapper and Actor
+    vtkPolyDataMapper mapper = new vtkPolyDataMapper();
+    mapper.SetInputConnection(WarpTo.GetOutputPort());
+    mapper.ScalarVisibilityOff();
+
+    vtkActor actor = new vtkActor();
+    actor.SetMapper(mapper);
+    actor.GetProperty().SetColor(actorColor);
+
+    ren.AddActor(actor);
+    ren.SetBackground(Bgcolor);
+
+    renWin.SetSize(300, 300);
+    renWin.Render();
+
+    iren.Initialize();
+    iren.Start();
+  }
+}

src/Java/Filtering/WarpTo.md

+### Description 
+
+vtkWarpTo object is a filter that modifies point coordinates by moving the points towards a user specified position.