# MultipleViewports

VTKExamples/Python/Visualization/MultipleViewports

### Description

This example demonstrates how to use multiple viewports to display several scenes in one render window.

- Contributed by: Bryan Conrad

### Code

MultipleViewports.py

    import vtk

    def main():
        '''One render window, multiple viewports'''
        rw = vtk.vtkRenderWindow()
        iren = vtk.vtkRenderWindowInteractor()
        iren.SetRenderWindow(rw)
        # Define viewport ranges
        xmins = [0, .5, 0, .5]
        xmaxs = [0.5, 1, 0.5, 1]
        ymins = [0, 0, .5, .5]
        ymaxs = [0.5, 0.5, 1, 1]
        for i in range(4):
            ren = vtk.vtkRenderer()
            rw.AddRenderer(ren)
            ren.SetViewport(xmins[i], ymins[i], xmaxs[i], ymaxs[i])

            # Create a sphere
            sphereSource = vtk.vtkSphereSource()
            sphereSource.SetCenter(0.0, 0.0, 0.0)
            sphereSource.SetRadius(5)

            # Create a mapper and actor
            mapper = vtk.vtkPolyDataMapper()
            mapper.SetInputConnection(sphereSource.GetOutputPort())
            actor = vtk.vtkActor()
            actor.SetMapper(mapper)
            ren.AddActor(actor)
            ren.ResetCamera()

        rw.Render()
        rw.SetWindowName('RW: Multiple ViewPorts')
        iren.Start()

    if __name__ == '__main__':
        main()