Hexahedron
VTKExamples/Python/GeometricObjects/Hexahedron
Description¶
This example creates eight points and creates a hexahedron from the points.
Code¶
Hexahedron.py
import vtk P0 = [0.0, 0.0, 0.0] P1 = [1.0, 0.0, 0.0] P2 = [1.0, 1.0, 0.0] P3 = [0.0, 1.0, 0.0] P4 = [0.0, 0.0, 1.0] P5 = [1.0, 0.0, 1.0] P6 = [1.0, 1.0, 1.0] P7 = [0.0, 1.0, 1.0] # Create the points points = vtk.vtkPoints() points.InsertNextPoint(P0) points.InsertNextPoint(P1) points.InsertNextPoint(P2) points.InsertNextPoint(P3) points.InsertNextPoint(P4) points.InsertNextPoint(P5) points.InsertNextPoint(P6) points.InsertNextPoint(P7) # Create a hexahedron from the points hex = vtk.vtkHexahedron() hex.GetPointIds().SetId(0,0) hex.GetPointIds().SetId(1,1) hex.GetPointIds().SetId(2,2) hex.GetPointIds().SetId(3,3) hex.GetPointIds().SetId(4,4) hex.GetPointIds().SetId(5,5) hex.GetPointIds().SetId(6,6) hex.GetPointIds().SetId(7,7) # Add the hexahedron to a cell array hexs = vtk.vtkCellArray() hexs.InsertNextCell(hex) # Add the points and hexahedron to an unstructured grid uGrid = vtk.vtkUnstructuredGrid() uGrid.SetPoints(points) uGrid.InsertNextCell(hex.GetCellType(), hex.GetPointIds()) # Visualize mapper = vtk.vtkDataSetMapper() mapper.SetInput(uGrid) actor = vtk.vtkActor() actor.SetMapper(mapper) renderer = vtk.vtkRenderer() renderWindow = vtk.vtkRenderWindow() renderWindow.AddRenderer(renderer) renderWindowInteractor = vtk.vtkRenderWindowInteractor() renderWindowInteractor.SetRenderWindow(renderWindow) renderer.AddActor(actor) renderer.SetBackground(.2, .3, .4) renderWindow.Render() renderWindowInteractor.Start()