#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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#
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# by Panos Mavrogiorgos, email: pmav99 <> gmail
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from vtk import *
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# The source file
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#file_name = "uGridEx.vtk"
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file_name="timestep.vtu"
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# Read the source file.
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#reader = vtkUnstructuredGridReader()
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reader=vtkXMLUnstructuredGridReader()
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reader.SetFileName(file_name)
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reader.Update() # Needed because of GetScalarRange
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output = reader.GetOutput()
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scalar_range = output.GetScalarRange()
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# Create the mapper that corresponds the objects of the vtk file
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# into graphics elements
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mapper = vtkDataSetMapper()
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mapper.SetInput(output)
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mapper.SetScalarRange(scalar_range)
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# Create the Actor
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actor = vtkActor()
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actor.SetMapper(mapper)
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# Create the Renderer
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renderer = vtkRenderer()
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renderer.AddActor(actor)
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renderer.SetBackground(0, 0, 0) # Set background to white
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# Create the RendererWindow
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renderer_window = vtkRenderWindow()
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renderer_window.AddRenderer(renderer)
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# Create the RendererWindowInteractor and display the vtk_file
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interactor = vtkRenderWindowInteractor()
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interactor.SetRenderWindow(renderer_window)
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interactor.Initialize()
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interactor.Start()
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