private void Subdivision(string filePath)
{
vtkPolyData originalMesh;
if (filePath != null)
{
vtkXMLPolyDataReader reader = vtkXMLPolyDataReader.New();
reader.SetFileName(filePath);
// Subdivision filters only work on triangles
vtkTriangleFilter triangles = vtkTriangleFilter.New();
triangles.SetInputConnection(reader.GetOutputPort());
triangles.Update();
originalMesh = triangles.GetOutput();
}
else
{
vtkSphereSource sphereSource = vtkSphereSource.New();
sphereSource.Update();
originalMesh = sphereSource.GetOutput();
}
Debug.WriteLine("Before subdivision");
Debug.WriteLine(" There are " + originalMesh.GetNumberOfPoints()
+ " points.");
Debug.WriteLine(" There are " + originalMesh.GetNumberOfPolys()
+ " triangles.");
int numberOfViewports = 3;
vtkRenderWindow renderWindow = renderWindowControl1.RenderWindow;
this.Size = new System.Drawing.Size(200 * numberOfViewports + 12, 252);
this.Text += " - Subdivision";
Random rnd = new Random(2);
int numberOfSubdivisions = 2;
// Create one text property for all
vtkTextProperty textProperty = vtkTextProperty.New();
textProperty.SetFontSize(14);
textProperty.SetJustificationToCentered();
for (int i = 0; i < numberOfViewports; i++)
{
// Note: Here we create a superclass pointer (vtkPolyDataAlgorithm) so that we can easily instantiate different
// types of subdivision filters. Typically you would not want to do this, but rather create the pointer to be the type
// filter you will actually use, e.g.
// <vtkLinearSubdivisionFilter> subdivisionFilter = <vtkLinearSubdivisionFilter>.New();
vtkPolyDataAlgorithm subdivisionFilter;
switch (i)
{
case 0:
subdivisionFilter = vtkLinearSubdivisionFilter.New();
((vtkLinearSubdivisionFilter)subdivisionFilter).SetNumberOfSubdivisions(numberOfSubdivisions);
break;
case 1:
subdivisionFilter = vtkLoopSubdivisionFilter.New();
((vtkLoopSubdivisionFilter)subdivisionFilter).SetNumberOfSubdivisions(numberOfSubdivisions);
break;
case 2:
subdivisionFilter = vtkButterflySubdivisionFilter.New();
((vtkButterflySubdivisionFilter)subdivisionFilter).SetNumberOfSubdivisions(numberOfSubdivisions);
break;
default:
subdivisionFilter = vtkLinearSubdivisionFilter.New();
((vtkLinearSubdivisionFilter)subdivisionFilter).SetNumberOfSubdivisions(numberOfSubdivisions);
break;
}
#if VTK_MAJOR_VERSION_5
subdivisionFilter.SetInputConnection(originalMesh.GetProducerPort());
#else
subdivisionFilter.SetInputData(originalMesh);
#endif
subdivisionFilter.Update();
vtkRenderer renderer = vtkRenderer.New();
renderWindow.AddRenderer(renderer);
renderer.SetViewport((float)i / numberOfViewports, 0, (float)(i + 1) / numberOfViewports, 1);
renderer.SetBackground(.2 + rnd.NextDouble() / 8, .3 + rnd.NextDouble() / 8, .4 + rnd.NextDouble() / 8);
vtkTextMapper textMapper = vtkTextMapper.New();
vtkActor2D textActor = vtkActor2D.New();
textMapper.SetInput(subdivisionFilter.GetClassName());
textMapper.SetTextProperty(textProperty);
textActor.SetMapper(textMapper);
textActor.SetPosition(100, 16);
//Create a mapper and actor
vtkPolyDataMapper mapper = vtkPolyDataMapper.New();
mapper.SetInputConnection(subdivisionFilter.GetOutputPort());
vtkActor actor = vtkActor.New();
actor.SetMapper(mapper);
renderer.AddActor(actor);
renderer.AddActor(textActor);
renderer.ResetCamera();
}
renderWindow.Render();
}
private void ParametricObjectsDemo()
{
// we create a matrix of 4x4 renderer in our renderwindow
// each renderer can be interacted with independently from one another
int rendererSize = 189; // width per renderer
int gridDimensions = 4;
this.Size = new System.Drawing.Size(756, 756);
Random rnd = new Random(2);
List <vtkParametricFunction> parametricObjects = new List <vtkParametricFunction>();
parametricObjects.Add(vtkParametricBoy.New());
parametricObjects.Add(vtkParametricConicSpiral.New());
parametricObjects.Add(vtkParametricCrossCap.New());
parametricObjects.Add(vtkParametricDini.New());
vtkParametricEllipsoid ellipsoid = vtkParametricEllipsoid.New();
ellipsoid.SetXRadius(0.5);
ellipsoid.SetYRadius(2.0);
parametricObjects.Add(ellipsoid);
parametricObjects.Add(vtkParametricEnneper.New());
parametricObjects.Add(vtkParametricFigure8Klein.New());
parametricObjects.Add(vtkParametricKlein.New());
parametricObjects.Add(vtkParametricMobius.New());
vtkParametricRandomHills randomHills = vtkParametricRandomHills.New();
randomHills.AllowRandomGenerationOff();
parametricObjects.Add(randomHills);
parametricObjects.Add(vtkParametricRoman.New());
vtkParametricSuperEllipsoid superEllipsoid = vtkParametricSuperEllipsoid.New();
superEllipsoid.SetN1(.50);
superEllipsoid.SetN2(.1);
parametricObjects.Add(superEllipsoid);
vtkParametricSuperToroid superToroid = vtkParametricSuperToroid.New();
superToroid.SetN1(0.2);
superToroid.SetN2(3.0);
parametricObjects.Add(superToroid);
parametricObjects.Add(vtkParametricTorus.New());
vtkParametricSpline spline = vtkParametricSpline.New();
vtkPoints inputPoints = vtkPoints.New();
vtkMath.RandomSeed(8775070);
for (int p = 0; p < 10; p++)
{
double x = vtkMath.Random(0.0, 1.0);
double y = vtkMath.Random(0.0, 1.0);
double z = vtkMath.Random(0.0, 1.0);
inputPoints.InsertNextPoint(x, y, z);
}
spline.SetPoints(inputPoints);
parametricObjects.Add(spline);
List <vtkParametricFunctionSource> parametricFunctionSources = new List <vtkParametricFunctionSource>();
List <vtkRenderer> renderers = new List <vtkRenderer>();
List <vtkPolyDataMapper> mappers = new List <vtkPolyDataMapper>();
List <vtkActor> actors = new List <vtkActor>();
List <vtkTextMapper> textMappers = new List <vtkTextMapper>();
List <vtkActor2D> textActors = new List <vtkActor2D>();
// Create one text property for all
vtkTextProperty textProperty = vtkTextProperty.New();
textProperty.SetFontSize(12);
textProperty.SetJustificationToCentered();
// Create a source, renderer, mapper, and actor
// for each object
for (int i = 0; i < parametricObjects.Count; i++)
{
parametricFunctionSources.Add(vtkParametricFunctionSource.New());
parametricFunctionSources[i].SetParametricFunction(parametricObjects[i]);
parametricFunctionSources[i].Update();
mappers.Add(vtkPolyDataMapper.New());
mappers[i].SetInputConnection(parametricFunctionSources[i].GetOutputPort());
actors.Add(vtkActor.New());
actors[i].SetMapper(mappers[i]);
textMappers.Add(vtkTextMapper.New());
textMappers[i].SetInput(parametricObjects[i].GetClassName());
textMappers[i].SetTextProperty(textProperty);
textActors.Add(vtkActor2D.New());
textActors[i].SetMapper(textMappers[i]);
textActors[i].SetPosition(rendererSize / 2, 16);
renderers.Add(vtkRenderer.New());
}
// Need a renderer even if there is no actor
for (int i = parametricObjects.Count; i < gridDimensions * gridDimensions; i++)
{
renderers.Add(vtkRenderer.New());
}
vtkRenderWindow renderWindow = renderWindowControl1.RenderWindow;
renderWindow.SetSize(rendererSize * gridDimensions, rendererSize * gridDimensions);
for (int row = 0; row < gridDimensions; row++)
{
for (int col = 0; col < gridDimensions; col++)
{
int index = row * gridDimensions + col;
// (xmin, ymin, xmax, ymax)
double[] viewport = new double[] {
(col) * rendererSize / (double)(gridDimensions * rendererSize),
(gridDimensions - (row + 1)) * rendererSize / (double)(gridDimensions * rendererSize),
(col + 1) * rendererSize / (double)(gridDimensions * rendererSize),
(gridDimensions - row) * rendererSize / (double)(gridDimensions * rendererSize)
};
//Debug.WriteLine(viewport[0] + " " + viewport[1] + " " + viewport[2] + " " + viewport[3]);
renderWindow.AddRenderer(renderers[index]);
IntPtr pViewport = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(double)) * 4);
Marshal.Copy(viewport, 0, pViewport, 4);
renderers[index].SetViewport(pViewport);
Marshal.FreeHGlobal(pViewport);
if (index > parametricObjects.Count - 1)
{
continue;
}
renderers[index].AddActor(actors[index]);
renderers[index].AddActor(textActors[index]);
renderers[index].SetBackground(.2 + rnd.NextDouble() / 8, .3 + rnd.NextDouble() / 8, .4 + rnd.NextDouble() / 8);
renderers[index].ResetCamera();
renderers[index].GetActiveCamera().Azimuth(30);
renderers[index].GetActiveCamera().Elevation(-50);
renderers[index].GetActiveCamera().Pitch(-2);
renderers[index].ResetCameraClippingRange();
}
}
}
private void GeometricObjectsDemo()
{
// we create a matrix of 3x3 renderer in our renderwindow
// each renderer can be interacted with independently from one another
int rendererSize = 234; // width per renderer
int gridDimensions = 3;
this.Size = new System.Drawing.Size(756, 756);
Random rnd = new Random(2); // for background color variation
List <vtkPolyDataAlgorithm> geometricObjectSources = new List <vtkPolyDataAlgorithm>();
geometricObjectSources.Add(vtkArrowSource.New());
geometricObjectSources.Add(vtkConeSource.New());
geometricObjectSources.Add(vtkCubeSource.New());
geometricObjectSources.Add(vtkCylinderSource.New());
geometricObjectSources.Add(vtkDiskSource.New());
geometricObjectSources.Add(vtkLineSource.New());
geometricObjectSources.Add(vtkRegularPolygonSource.New());
geometricObjectSources.Add(vtkSphereSource.New());
geometricObjectSources.Add(vtkEarthSource.New());
List <vtkRenderer> renderers = new List <vtkRenderer>();
List <vtkPolyDataMapper> mappers = new List <vtkPolyDataMapper>();
List <vtkActor> actors = new List <vtkActor>();
List <vtkTextMapper> textMappers = new List <vtkTextMapper>();
List <vtkActor2D> textActors = new List <vtkActor2D>();
// Create one text property for all
vtkTextProperty textProperty = vtkTextProperty.New();
textProperty.SetFontSize(18);
textProperty.SetJustificationToCentered();
// Create a source, renderer, mapper, and actor
// for each object
for (int i = 0; i < geometricObjectSources.Count; i++)
{
geometricObjectSources[i].Update();
mappers.Add(vtkPolyDataMapper.New());
mappers[i].SetInputConnection(geometricObjectSources[i].GetOutputPort());
actors.Add(vtkActor.New());
actors[i].SetMapper(mappers[i]);
textMappers.Add(vtkTextMapper.New());
textMappers[i].SetInput(geometricObjectSources[i].GetClassName());
textMappers[i].SetTextProperty(textProperty);
textActors.Add(vtkActor2D.New());
textActors[i].SetMapper(textMappers[i]);
textActors[i].SetPosition(rendererSize / 2, 16);
renderers.Add(vtkRenderer.New());
}
// Need a renderer even if there is no actor
for (int i = geometricObjectSources.Count; i < gridDimensions * gridDimensions; i++)
{
renderers.Add(vtkRenderer.New());
}
vtkRenderWindow renderWindow = renderWindowControl1.RenderWindow;
renderWindow.SetSize(rendererSize * gridDimensions, rendererSize * gridDimensions);
for (int row = 0; row < gridDimensions; row++)
{
for (int col = 0; col < gridDimensions; col++)
{
int index = row * gridDimensions + col;
// (xmin, ymin, xmax, ymax)
double[] viewport = new double[] {
(col) * rendererSize / (double)(gridDimensions * rendererSize),
(gridDimensions - (row + 1)) * rendererSize / (double)(gridDimensions * rendererSize),
(col + 1) * rendererSize / (double)(gridDimensions * rendererSize),
(gridDimensions - row) * rendererSize / (double)(gridDimensions * rendererSize)
};
Debug.WriteLine(viewport[0] + " " + viewport[1] + " " + viewport[2] + " " + viewport[3]);
renderWindow.AddRenderer(renderers[index]);
IntPtr pViewport = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(double)) * 4);
Marshal.Copy(viewport, 0, pViewport, 4);
renderers[index].SetViewport(pViewport);
Marshal.FreeHGlobal(pViewport);
if (index > geometricObjectSources.Count - 1)
{
continue;
}
renderers[index].AddActor(actors[index]);
renderers[index].AddActor(textActors[index]);
renderers[index].SetBackground(.2 + rnd.NextDouble() / 8, .3 + rnd.NextDouble() / 8, .4 + rnd.NextDouble() / 8);
}
}
}
