This example demonstrates how to use multiple renderers within a render window.
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#!/usr/bin/env python """ ========================================================================= Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen All rights reserved. See Copyright.txt or http://www.kitware.com/Copyright.htm for details. This software is distributed WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the above copyright notice for more information. =========================================================================*/ """ # First access the VTK module (and any other needed modules) by importing them. import vtk def main(argv): colors = vtk.vtkNamedColors() # # Next we create an instance of vtkConeSource and set some of its # properties. The instance of vtkConeSource 'cone' is part of a # visualization pipeline (it is a source process object) it produces data # (output type is vtkPolyData) which other filters may process. # cone = vtk.vtkConeSource() cone.SetHeight(3.0) cone.SetRadius(1.0) cone.SetResolution(10) # # In this example we terminate the pipeline with a mapper process object. # (Intermediate filters such as vtkShrinkPolyData could be inserted in # between the source and the mapper.) We create an instance of # vtkPolyDataMapper to map the polygonal data into graphics primitives. We # connect the output of the cone source to the input of this mapper. # coneMapper = vtk.vtkPolyDataMapper() coneMapper.SetInputConnection(cone.GetOutputPort()) # # Create an actor to represent the cone. The actor orchestrates rendering # of the mapper's graphics primitives. An actor also refers to properties # via a vtkProperty instance, and includes an internal transformation # matrix. We set this actor's mapper to be coneMapper which we created # above. # coneActor = vtk.vtkActor() coneActor.SetMapper(coneMapper) coneActor.GetProperty().SetColor(colors.GetColor3d('MistyRose')) # # Create two renderers and assign actors to them. A renderer renders into # a viewport within the vtkRenderWindow. It is part or all of a window on # the screen and it is responsible for drawing the actors it has. We also # set the background color here. In this example we are adding the same # actor to two different renderers it is okay to add different actors to # different renderers as well. # ren1 = vtk.vtkRenderer() ren1.AddActor(coneActor) ren1.SetBackground(colors.GetColor3d('RoyalBlue')) ren1.SetViewport(0.0, 0.0, 0.5, 1.0) ren2 = vtk.vtkRenderer() ren2.AddActor(coneActor) ren2.SetBackground(colors.GetColor3d('DodgerBlue')) ren2.SetViewport(0.5, 0.0, 1.0, 1.0) # # Finally we create the render window which will show up on the screen. # We put our renderer into the render window using AddRenderer. We also # set the size to be 300 pixels by 300. # renWin = vtk.vtkRenderWindow() renWin.AddRenderer(ren1) renWin.AddRenderer(ren2) renWin.SetSize(600, 300) renWin.SetWindowName('Tutorial_Step3') # # Make one view 90 degrees from other. # ren1.ResetCamera() ren1.GetActiveCamera().Azimuth(90) # # Now we loop over 360 degrees and render the cones each time. # for i in range(0, 360): # render the image renWin.Render() # rotate the active camera by one degree ren1.GetActiveCamera().Azimuth(1) ren2.GetActiveCamera().Azimuth(1) if __name__ == '__main__': import sys main(sys.argv)