# MultipleViewports

VTKExamples/Python//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'''
        iren_list = []
        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()