LongLine
VTKExamples/Python/GeometricObjects/LongLine
Code¶
LongLine.py
#!/usr/bin/env python import vtk # Create five points. origin = [0.0, 0.0, 0.0] p0 = [1.0, 0.0, 0.0] p1 = [0.0, 1.0, 0.0] p2 = [0.0, 1.0, 2.0] p3 = [1.0, 2.0, 3.0] # Create a vtkPoints object and store the points in it points = vtk.vtkPoints() points.InsertNextPoint(origin) points.InsertNextPoint(p0) points.InsertNextPoint(p1) points.InsertNextPoint(p2) points.InsertNextPoint(p3) # Create a cell array to store the lines in and add the lines to it lines = vtk.vtkCellArray() for i in range(3): line = vtk.vtkLine() line.GetPointIds().SetId(0,i) line.GetPointIds().SetId(1,i+1) lines.InsertNextCell(line) # Create a polydata to store everything in linesPolyData = vtk.vtkPolyData() # Add the points to the dataset linesPolyData.SetPoints(points) # Add the lines to the dataset linesPolyData.SetLines(lines) # Setup actor and mapper mapper = vtk.vtkPolyDataMapper() if vtk.VTK_MAJOR_VERSION <= 5: mapper.SetInput(linesPolyData) else: mapper.SetInputData(linesPolyData) actor = vtk.vtkActor() actor.SetMapper(mapper) # Setup render window, renderer, and interactor renderer = vtk.vtkRenderer() renderWindow = vtk.vtkRenderWindow() renderWindow.AddRenderer(renderer) renderWindowInteractor = vtk.vtkRenderWindowInteractor() renderWindowInteractor.SetRenderWindow(renderWindow) renderer.AddActor(actor) renderWindow.Render() renderWindowInteractor.Start()