static void Main()
{
string VTK_DATA_ROOT = "C:/Program Files/VTKData";
// Create a vtkBYUReader and read in a data set.
vtkBYUReader fohe = new vtkBYUReader();
fohe.SetGeometryFileName(VTK_DATA_ROOT + "/Data/teapot.g");
// Create a vtkPolyDataNormals filter to calculate the normals of the
// data set.
vtkPolyDataNormals normals = new vtkPolyDataNormals();
normals.SetInputConnection(fohe.GetOutputPort());
// Set up the associated mapper and actor.
vtkPolyDataMapper foheMapper = new vtkPolyDataMapper();
foheMapper.SetInputConnection(normals.GetOutputPort());
vtkLODActor foheActor = new vtkLODActor();
foheActor.SetMapper(foheMapper);
// Create a vtkOutlineFilter to draw the bounding box of the data set.
// Also create the associated mapper and actor.
vtkOutlineFilter outline = new vtkOutlineFilter();
outline.SetInputConnection(normals.GetOutputPort());
vtkPolyDataMapper mapOutline = new vtkPolyDataMapper();
mapOutline.SetInputConnection(outline.GetOutputPort());
vtkActor outlineActor = new vtkActor();
outlineActor.SetMapper(mapOutline);
outlineActor.GetProperty().SetColor(0, 0, 0);
// Create a vtkCamera, and set the camera parameters.
vtkCamera camera = new vtkCamera();
camera.SetClippingRange(1.60187, 20.0842);
camera.SetFocalPoint(0.21406, 1.5, 0);
camera.SetPosition(8.3761, 4.94858, 4.12505);
camera.SetViewUp(0.180325, 0.549245, -0.815974);
// Create a vtkLight, and set the light parameters.
vtkLight light = new vtkLight();
light.SetFocalPoint(0.21406, 1.5, 0);
light.SetPosition(8.3761, 4.94858, 4.12505);
// Create the Renderers. Assign them the appropriate viewport
// coordinates, active camera, and light.
vtkRenderer ren = new vtkRenderer();
ren.SetViewport(0, 0, 0.5, 1.0);
ren.SetActiveCamera(camera);
ren.AddLight(light);
vtkRenderer ren2 = new vtkRenderer();
ren2.SetViewport(0.5, 0, 1.0, 1.0);
ren2.SetActiveCamera(camera);
ren2.AddLight(light);
// Create the RenderWindow and RenderWindowInteractor.
vtkRenderWindow renWin = new vtkRenderWindow();
renWin.AddRenderer(ren);
renWin.AddRenderer(ren2);
renWin.SetWindowName("VTK - Cube Axes");
renWin.SetSize(600, 300);
vtkRenderWindowInteractor iren = new vtkRenderWindowInteractor();
iren.SetRenderWindow(renWin);
// Add the actors to the renderer, and set the background.
ren.AddViewProp(foheActor);
ren.AddViewProp(outlineActor);
ren2.AddViewProp(foheActor);
ren2.AddViewProp(outlineActor);
ren.SetBackground(0.1, 0.2, 0.4);
ren2.SetBackground(0.1, 0.2, 0.4);
// Create a text property for both cube axes
vtkTextProperty tprop = new vtkTextProperty();
tprop.SetColor(1, 1, 1);
tprop.ShadowOn();
// Create a vtkCubeAxesActor2D. Use the outer edges of the bounding box to
// draw the axes. Add the actor to the renderer.
vtkCubeAxesActor2D axes = new vtkCubeAxesActor2D();
axes.SetInput(normals.GetOutput());
axes.SetCamera(ren.GetActiveCamera());
axes.SetLabelFormat("%6.4g");
axes.SetFlyModeToOuterEdges();
axes.SetFontFactor(0.8);
axes.SetAxisTitleTextProperty(tprop);
axes.SetAxisLabelTextProperty(tprop);
ren.AddViewProp(axes);
// Create a vtkCubeAxesActor2D. Use the closest vertex to the camera to
// determine where to draw the axes. Add the actor to the renderer.
vtkCubeAxesActor2D axes2 = new vtkCubeAxesActor2D();
axes2.SetViewProp(foheActor);
axes2.SetCamera(ren2.GetActiveCamera());
axes2.SetLabelFormat("%6.4g");
axes2.SetFlyModeToClosestTriad();
axes2.SetFontFactor(0.8);
axes2.ScalingOff();
axes2.SetAxisTitleTextProperty(tprop);
axes2.SetAxisLabelTextProperty(tprop);
ren2.AddViewProp(axes2);
renWin.AddObserver((uint) EventIds.AbortCheckEvent, CheckAbort);
iren.Initialize();
renWin.Render();
iren.Start();
vtkWin32OpenGLRenderWindow win32win =
vtkWin32OpenGLRenderWindow.SafeDownCast(renWin);
if (null != win32win) win32win.Clean();
}
private void ReadStlFileDraw()
{
vtkSTLReader stlReader = vtkSTLReader.New();
//stlReader.SetFileName(@"..\..\Data\anchor_hook.stl");
stlReader.SetFileName(@"..\..\Data\42400-IDGH.stl");
vtkShrinkPolyData shrink = vtkShrinkPolyData.New();
shrink.SetInputConnection(stlReader.GetOutputPort());
shrink.SetShrinkFactor(0.85);
vtkPolyDataMapper stlMapper = vtkPolyDataMapper.New();
//stlMapper.SetInputConnection(stlReader.GetOutputPort());
stlMapper.SetInputConnection(shrink.GetOutputPort());
vtkLODActor stlActor = vtkLODActor.New();
stlActor.SetMapper(stlMapper);
stlActor.GetProperty().SetColor((float)Color.Orange.R / 256, (float)Color.Orange.G / 256, (float)Color.Orange.B / 256); //设置actor的颜色
vtkRenderer stlRender = vtkRenderer.New();
vtkRenderWindow renWin = myRenderWindowControl.RenderWindow;
renWin.AddRenderer(stlRender);
stlRender.AddActor(stlActor);
stlRender.SetBackground(1.0, 1.0, 1.0);
}
static void Main(string[] args)
{
// create a sphere source, mapper, and actor
vtkSphereSource sphere = new vtkSphereSource();
vtkPolyDataMapper sphereMapper = new vtkPolyDataMapper();
sphereMapper.SetInputConnection(sphere.GetOutputPort());
vtkPolyDataMapper.GlobalImmediateModeRenderingOn();
vtkLODActor sphereActor = new vtkLODActor();
sphereActor.SetMapper(sphereMapper);
// create the spikes by glyphing the sphere with a cone. Create the
// mapper and actor for the glyphs.
vtkConeSource cone = new vtkConeSource();
vtkGlyph3D glyph = new vtkGlyph3D();
glyph.SetInputConnection(sphere.GetOutputPort());
glyph.SetSource(cone.GetOutput());
glyph.SetVectorModeToUseNormal();
glyph.SetScaleModeToScaleByVector();
glyph.SetScaleFactor(0.25);
vtkPolyDataMapper spikeMapper = new vtkPolyDataMapper();
spikeMapper.SetInputConnection(glyph.GetOutputPort());
vtkLODActor spikeActor = new vtkLODActor();
spikeActor.SetMapper(spikeMapper);
// Create a text mapper and actor to display the results of picking.
vtkTextMapper textMapper = new vtkTextMapper();
vtkTextProperty tprop = textMapper.GetTextProperty();
tprop.SetFontFamilyToArial();
tprop.SetFontSize(10);
tprop.BoldOn();
tprop.ShadowOn();
tprop.SetColor(1, 0, 0);
vtkActor2D textActor = new vtkActor2D();
textActor.VisibilityOff();
textActor.SetMapper(textMapper);
// Create a cell picker.
vtkCellPicker picker = new vtkCellPicker();
PickData pd = new PickData();
pd.textActor = textActor;
pd.textMapper = textMapper;
vtkDotNetCallback cb = new vtkDotNetCallback(pd.annotatePickCallback);
// Now at the end of the pick event call the above function.
picker.AddObserver((uint) EventIds.EndPickEvent, cb);
// Create the Renderer, RenderWindow, etc. and set the Picker.
vtkRenderer ren = new vtkRenderer();
vtkRenderWindow renWin = new vtkRenderWindow();
renWin.AddRenderer(ren);
vtkRenderWindowInteractor iren = new vtkRenderWindowInteractor();
iren.SetRenderWindow(renWin);
iren.SetPicker(picker);
// Add the actors to the renderer, set the background and size
ren.AddActor2D(textActor);
ren.AddActor(sphereActor);
ren.AddActor(spikeActor);
ren.SetBackground(1, 1, 1);
renWin.SetSize(300, 300);
// Get the camera and zoom in closer to the image.
ren.ResetCamera();
vtkCamera cam1 = ren.GetActiveCamera();
cam1.Zoom(1.4);
iren.Initialize();
// Initially pick the cell at this location.
picker.Pick(85, 126, 0, ren);
renWin.Render();
iren.Start();
vtkWin32OpenGLRenderWindow win32win =
vtkWin32OpenGLRenderWindow.SafeDownCast(renWin);
if (null != win32win) win32win.Clean();
}
private void SetUpRenderWindow()
{
// create a VTK output control and make the forms host point to it
rwc = new RenderWindowControl();
rwc.CreateGraphics();
windowsFormsHost.Child = rwc;
// set up basic viewing
vtkRenderer ren = rwc.RenderWindow.GetRenderers().GetFirstRenderer();
// background color
ren.SetBackground(0.0, 0.0, 0.0);
// interactor style
vtkInteractorStyleSwitch istyle = vtkInteractorStyleSwitch.New();
rwc.RenderWindow.GetInteractor().SetInteractorStyle(istyle);
rwc.RenderWindow.GetInteractor().SetPicker(vtkCellPicker.New());
(istyle).SetCurrentStyleToTrackballCamera();
// Demonstrate how to use the vtkBoxWidget 3D widget,
vtkSphereSource sphere = vtkSphereSource.New();
sphere.SetRadius(0.25);
vtkPolyDataMapper sphereMapper = vtkPolyDataMapper.New();
sphereMapper.SetInputConnection(sphere.GetOutputPort());
vtkActor sphereActor;
vtkTransform widgetTransform = vtkTransform.New();
List <Region> region_list = configurator.SimConfig.scenario.regions.ToList();
for (int ii = 0; ii < region_list.Count; ++ii)
{
this.TransferMatrixToVTKTransform(region_list[ii].region_box_spec.transform_matrix, widgetTransform);
sphereActor = vtkActor.New();
sphereActor.SetMapper(sphereMapper);
sphereActor.SetUserTransform(widgetTransform);
sphereActor.GetProperty().SetOpacity(0.5);
sphereActor.SetVisibility(region_list[ii].region_visibility ? 1 : 0);
sphereActorList.Add(sphereActor);
ren.AddActor(sphereActorList[ii]);
}
vtkCubeSource cube = vtkCubeSource.New();
cube.SetXLength(5.0);
cube.SetYLength(5.0);
cube.SetZLength(5.0);
vtkOutlineSource outline = vtkOutlineSource.New();
outline.SetBounds(-2, 2, -2, 2, -2, 2);
vtkPolyDataMapper cubeMapper = vtkPolyDataMapper.New();
cubeMapper.SetInputConnection(outline.GetOutputPort());
vtkLODActor cubeActor = vtkLODActor.New();
cubeActor.SetMapper(cubeMapper);
cubeActor.VisibilityOn();
ren.AddActor(cubeActor);
boxRep = vtkBoxRepresentation.New();
boxRep.SetTransform(widgetTransform);
boxWidget = vtkBoxWidget2.New();
boxWidget.SetInteractor(rwc.RenderWindow.GetInteractor());
boxWidget.SetRepresentation(boxRep);
boxWidget.SetPriority(1);
boxWidget.InteractionEvt += this.boxInteractionCallback;
ren.ResetCamera();
}
private void ReadPDB()
{
// Path to vtk data must be set as an environment variable
// VTK_DATA_ROOT = "C:\VTK\vtkdata-5.8.0"
vtkTesting test = vtkTesting.New();
string root = test.GetDataRoot();
string filePath = System.IO.Path.Combine(root, @"Data\caffeine.pdb");
vtkPDBReader pdb = vtkPDBReader.New();
pdb.SetFileName(filePath);
pdb.SetHBScale(1.0);
pdb.SetBScale(1.0);
pdb.Update();
Debug.WriteLine("# of atoms is: " + pdb.GetNumberOfAtoms());
// if molecule contains a lot of atoms, reduce the resolution of the sphere (represents an atom) for faster rendering
int resolution = (int)Math.Floor(Math.Sqrt(300000.0 / pdb.GetNumberOfAtoms())); // 300000.0 is an empriric value
if (resolution > 20)
{
resolution = 20;
}
else if (resolution < 4)
{
resolution = 4;
}
Debug.WriteLine("Resolution is: " + resolution);
vtkSphereSource sphere = vtkSphereSource.New();
sphere.SetCenter(0, 0, 0);
sphere.SetRadius(1);
sphere.SetThetaResolution(resolution);
sphere.SetPhiResolution(resolution);
vtkGlyph3D glyph = vtkGlyph3D.New();
glyph.SetInputConnection(pdb.GetOutputPort());
glyph.SetOrient(1);
glyph.SetColorMode(1);
// glyph.ScalingOn();
glyph.SetScaleMode(2);
glyph.SetScaleFactor(.25);
glyph.SetSourceConnection(sphere.GetOutputPort());
vtkPolyDataMapper atomMapper = vtkPolyDataMapper.New();
atomMapper.SetInputConnection(glyph.GetOutputPort());
atomMapper.UseLookupTableScalarRangeOff();
atomMapper.ScalarVisibilityOn();
atomMapper.SetScalarModeToDefault();
vtkLODActor atom = vtkLODActor.New();
atom.SetMapper(atomMapper);
atom.GetProperty().SetRepresentationToSurface();
atom.GetProperty().SetInterpolationToGouraud();
atom.GetProperty().SetAmbient(0.15);
atom.GetProperty().SetDiffuse(0.85);
atom.GetProperty().SetSpecular(0.1);
atom.GetProperty().SetSpecularPower(30);
atom.GetProperty().SetSpecularColor(1, 1, 1);
atom.SetNumberOfCloudPoints(30000);
vtkTubeFilter tube = vtkTubeFilter.New();
tube.SetInputConnection(pdb.GetOutputPort());
tube.SetNumberOfSides(resolution);
tube.CappingOff();
tube.SetRadius(0.2);
// turn off variation of tube radius with scalar values
tube.SetVaryRadius(0);
tube.SetRadiusFactor(10);
vtkPolyDataMapper bondMapper = vtkPolyDataMapper.New();
bondMapper.SetInputConnection(tube.GetOutputPort());
bondMapper.UseLookupTableScalarRangeOff();
bondMapper.ScalarVisibilityOff();
bondMapper.SetScalarModeToDefault();
vtkLODActor bond = vtkLODActor.New();
bond.SetMapper(bondMapper);
bond.GetProperty().SetRepresentationToSurface();
bond.GetProperty().SetInterpolationToGouraud();
bond.GetProperty().SetAmbient(0.15);
bond.GetProperty().SetDiffuse(0.85);
bond.GetProperty().SetSpecular(0.1);
bond.GetProperty().SetSpecularPower(30);
bond.GetProperty().SetSpecularColor(1, 1, 1);
bond.GetProperty().SetDiffuseColor(1.0000, 0.8941, 0.70981);
// get a reference to the renderwindow of our renderWindowControl1
vtkRenderWindow renderWindow = renderWindowControl1.RenderWindow;
// renderer
vtkRenderer renderer = renderWindow.GetRenderers().GetFirstRenderer();
// set background color
renderer.SetBackground(0.2, 0.3, 0.4);
// add our actor to the renderer
renderer.AddActor(atom);
renderer.AddActor(bond);
}
/// <summary>
/// An example that does not use a Windows Form
/// </summary>
/// <param name="argv"></param>
public static void Main(String[] argv)
{
// This example demonstrates the use of vtkCubeAxesActor2D to indicate the
// position in space that the camera is currently viewing.
// The vtkCubeAxesActor2D draws axes on the bounding box of the data set and
// labels the axes with x-y-z coordinates.
//
// First we include the VTK Tcl packages which will make available
// all of the vtk commands to Tcl
//
// Create a vtkBYUReader and read in a data set.
//
fohe = vtkBYUReader.New();
fohe.SetGeometryFileName("../../../teapot.g");
// Create a vtkPolyDataNormals filter to calculate the normals of the data set.
normals = vtkPolyDataNormals.New();
normals.SetInputConnection(fohe.GetOutputPort());
// Set up the associated mapper and actor.
foheMapper = vtkPolyDataMapper.New();
foheMapper.SetInputConnection(normals.GetOutputPort());
foheActor = vtkLODActor.New();
foheActor.SetMapper(foheMapper);
// Create a vtkOutlineFilter to draw the bounding box of the data set. Also
// create the associated mapper and actor.
outline = vtkOutlineFilter.New();
outline.SetInputConnection(normals.GetOutputPort());
mapOutline = vtkPolyDataMapper.New();
mapOutline.SetInputConnection(outline.GetOutputPort());
outlineActor = vtkActor.New();
outlineActor.SetMapper(mapOutline);
outlineActor.GetProperty().SetColor(0, 0, 0);
// Create a vtkCamera, and set the camera parameters.
camera = vtkCamera.New();
camera.SetClippingRange(1.60187, 20.0842);
camera.SetFocalPoint(0.21406, 1.5, 0);
camera.SetPosition(8.3761, 4.94858, 4.12505);
camera.SetViewUp(0.180325, 0.549245, -0.815974);
// Create a vtkLight, and set the light parameters.
light = vtkLight.New();
light.SetFocalPoint(0.21406, 1.5, 0);
light.SetPosition(8.3761, 4.94858, 4.12505);
// Create the Renderers. Assign them the appropriate viewport coordinates,
// active camera, and light.
ren1 = vtkRenderer.New();
ren1.SetViewport(0, 0, 0.5, 1.0);
ren1.SetActiveCamera(camera);
ren1.AddLight(light);
ren2 = vtkRenderer.New();
ren2.SetViewport(0.5, 0, 1.0, 1.0);
ren2.SetActiveCamera(camera);
ren2.AddLight(light);
// Create the RenderWindow and RenderWindowInteractor.
renWin = vtkRenderWindow.New();
renWin.AddRenderer(ren1);
renWin.AddRenderer(ren2);
renWin.SetWindowName("VTK - Cube Axes");
renWin.SetSize(600, 300);
iren = vtkRenderWindowInteractor.New();
iren.SetRenderWindow(renWin);
// Add the actors to the renderer, and set the background.
ren1.AddViewProp(foheActor);
ren1.AddViewProp(outlineActor);
ren2.AddViewProp(foheActor);
ren2.AddViewProp(outlineActor);
ren1.SetBackground(0.1, 0.2, 0.4);
ren2.SetBackground(0.1, 0.2, 0.4);
// Create a text property for both cube axes
tprop = vtkTextProperty.New();
tprop.SetColor(1, 1, 1);
tprop.ShadowOn();
// Create a vtkCubeAxesActor2D. Use the outer edges of the bounding box to
// draw the axes. Add the actor to the renderer.
axes = vtkCubeAxesActor2D.New();
axes.SetInput(normals.GetOutput());
axes.SetCamera(ren1.GetActiveCamera());
axes.SetLabelFormat("%6.4g");
axes.SetFlyModeToOuterEdges();
axes.SetFontFactor(0.8);
axes.SetAxisTitleTextProperty(tprop);
axes.SetAxisLabelTextProperty(tprop);
ren1.AddViewProp(axes);
// Create a vtkCubeAxesActor2D. Use the closest vertex to the camera to
// determine where to draw the axes. Add the actor to the renderer.
axes2 = vtkCubeAxesActor2D.New();
axes2.SetViewProp(foheActor);
axes2.SetCamera(ren2.GetActiveCamera());
axes2.SetLabelFormat("%6.4g");
axes2.SetFlyModeToClosestTriad();
axes2.SetFontFactor(0.8);
axes2.ScalingOff();
axes2.SetAxisTitleTextProperty(tprop);
axes2.SetAxisLabelTextProperty(tprop);
ren2.AddViewProp(axes2);
// Render
renWin.Render();
// Set the user method (bound to key 'u')
iren.Initialize();
iren.Start();
// Set up a check for aborting rendering.
renWin.AbortCheckEvt += new vtkObject.vtkObjectEventHandler(TkCheckAbort);
//Clean Up
deleteAllVTKObjects();
}
/// <summary>
/// A console application that creates a
/// vtkRenderWindow without a Windows Form
/// </summary>
/// <param name="argv"></param>
public static void Main(String[] argv)
{
// Demonstrate how to use the vtkBoxWidget 3D widget,
// This script uses a 3D box widget to define a "clipping box" to clip some
// simple geometry (a mace). Make sure that you hit the "W" key to activate the widget.
// Create a mace out of filters.
sphere = vtkSphereSource.New();
cone = vtkConeSource.New();
glyph = vtkGlyph3D.New();
glyph.SetInputConnection(sphere.GetOutputPort());
glyph.SetSource(cone.GetOutput());
glyph.SetVectorModeToUseNormal();
glyph.SetScaleModeToScaleByVector();
glyph.SetScaleFactor(0.25);
// The sphere and spikes are appended into a single polydata. This just makes things
// simpler to manage.
apd = vtkAppendPolyData.New();
apd.AddInput(glyph.GetOutput());
apd.AddInput(sphere.GetOutput());
maceMapper = vtkPolyDataMapper.New();
maceMapper.SetInputConnection(apd.GetOutputPort());
maceActor = vtkLODActor.New();
maceActor.SetMapper(maceMapper);
maceActor.VisibilityOn();
// This portion of the code clips the mace with the vtkPlanes implicit function.
// The clipped region is colored green.
planes = vtkPlanes.New();
clipper = vtkClipPolyData.New();
clipper.SetInputConnection(apd.GetOutputPort());
clipper.SetClipFunction(planes);
clipper.InsideOutOn();
selectMapper = vtkPolyDataMapper.New();
selectMapper.SetInputConnection(clipper.GetOutputPort());
selectActor = vtkLODActor.New();
selectActor.SetMapper(selectMapper);
selectActor.GetProperty().SetColor(0, 1, 0);
selectActor.VisibilityOff();
selectActor.SetScale(1.01, 1.01, 1.01);
// Create the RenderWindow, Renderer and both Actors
ren1 = vtkRenderer.New();
renWin = vtkRenderWindow.New();
renWin.AddRenderer(ren1);
iren = vtkRenderWindowInteractor.New();
iren.SetRenderWindow(renWin);
// The SetInteractor method is how 3D widgets are associated with the render
// window interactor. Internally, SetInteractor sets up a bunch of callbacks
// using the Command/Observer mechanism (AddObserver()).
boxWidget = vtkBoxWidget.New();
boxWidget.SetInteractor(iren);
boxWidget.SetPlaceFactor(1.25);
ren1.AddActor(maceActor);
ren1.AddActor(selectActor);
// Add the actors to the renderer, set the background and size
ren1.SetBackground(0.1, 0.2, 0.4);
renWin.SetSize(300, 300);
// Place the interactor initially. The input to a 3D widget is used to
// initially position and scale the widget. The EndInteractionEvent is
// observed which invokes the SelectPolygons callback.
boxWidget.SetInput(glyph.GetOutput());
boxWidget.PlaceWidget();
boxWidget.EndInteractionEvt += new vtkObject.vtkObjectEventHandler(SelectPolygons);
// render the image
iren.Initialize();
iren.Start();
//Clean up
deleteAllVTKObjects();
}
private void SelectPolyData()
{
vtkSphereSource sphereSource = vtkSphereSource.New();
sphereSource.Update();
vtkPoints selectionPoints = vtkPoints.New();
selectionPoints.InsertPoint(0, -0.16553, 0.135971, 0.451972);
selectionPoints.InsertPoint(1, -0.0880123, -0.134952, 0.4747);
selectionPoints.InsertPoint(2, 0.00292618, -0.134604, 0.482459);
selectionPoints.InsertPoint(3, 0.0641941, 0.067112, 0.490947);
selectionPoints.InsertPoint(4, 0.15577, 0.0734765, 0.469245);
selectionPoints.InsertPoint(5, 0.166667, -0.129217, 0.454622);
selectionPoints.InsertPoint(6, 0.241259, -0.123363, 0.420581);
selectionPoints.InsertPoint(7, 0.240334, 0.0727106, 0.432555);
selectionPoints.InsertPoint(8, 0.308529, 0.0844311, 0.384357);
selectionPoints.InsertPoint(9, 0.32672, -0.121674, 0.359187);
selectionPoints.InsertPoint(10, 0.380721, -0.117342, 0.302527);
selectionPoints.InsertPoint(11, 0.387804, 0.0455074, 0.312375);
selectionPoints.InsertPoint(12, 0.43943, -0.111673, 0.211707);
selectionPoints.InsertPoint(13, 0.470984, -0.0801913, 0.147919);
selectionPoints.InsertPoint(14, 0.436777, 0.0688872, 0.233021);
selectionPoints.InsertPoint(15, 0.44874, 0.188852, 0.109882);
selectionPoints.InsertPoint(16, 0.391352, 0.254285, 0.176943);
selectionPoints.InsertPoint(17, 0.373274, 0.154162, 0.294296);
selectionPoints.InsertPoint(18, 0.274659, 0.311654, 0.276609);
selectionPoints.InsertPoint(19, 0.206068, 0.31396, 0.329702);
selectionPoints.InsertPoint(20, 0.263789, 0.174982, 0.387308);
selectionPoints.InsertPoint(21, 0.213034, 0.175485, 0.417142);
selectionPoints.InsertPoint(22, 0.169113, 0.261974, 0.390286);
selectionPoints.InsertPoint(23, 0.102552, 0.25997, 0.414814);
selectionPoints.InsertPoint(24, 0.131512, 0.161254, 0.454705);
selectionPoints.InsertPoint(25, 0.000192443, 0.156264, 0.475307);
selectionPoints.InsertPoint(26, -0.0392091, 0.000251724, 0.499943);
selectionPoints.InsertPoint(27, -0.096161, 0.159646, 0.46438);
vtkSelectPolyData loop = vtkSelectPolyData.New();
loop.SetInputConnection(sphereSource.GetOutputPort());
loop.SetLoop(selectionPoints);
loop.GenerateSelectionScalarsOn();
loop.SetSelectionModeToSmallestRegion(); //negative scalars inside
vtkClipPolyData clip = //clips out positive region
vtkClipPolyData.New();
clip.SetInputConnection(loop.GetOutputPort());
vtkPolyDataMapper clipMapper = vtkPolyDataMapper.New();
clipMapper.SetInputConnection(clip.GetOutputPort());
vtkLODActor clipActor = vtkLODActor.New();
clipActor.SetMapper(clipMapper);
// get a reference to the renderwindow of our renderWindowControl1
vtkRenderWindow renderWindow = renderWindowControl1.RenderWindow;
// renderer
vtkRenderer renderer = renderWindow.GetRenderers().GetFirstRenderer();
// set background color
renderer.SetBackground(.1, .2, .4);
renderWindow.SetSize(500, 250);
// add our actor to the renderer
renderer.AddActor(clipActor);
}