# TexturePlane

VTKExamples/Python/Texture/TexturePlane

### Code

TexturePlane.py

    #!/usr/bin/env python

    import vtk

    def main():
        fileName = get_program_parameters()

        colors = vtk.vtkNamedColors()

        # Load in the texture map. A texture is any unsigned char image. If it
        # is not of this type, you will have to map it through a lookup table
        # or by using vtkImageShiftScale.
        #
        readerFactory = vtk.vtkImageReader2Factory()
        textureFile = readerFactory.CreateImageReader2(fileName)
        textureFile.SetFileName(fileName)
        textureFile.Update()

        atext = vtk.vtkTexture()
        atext.SetInputConnection(textureFile.GetOutputPort())
        atext.InterpolateOn()

        # Create a plane source and actor. The vtkPlanesSource generates
        # texture coordinates.
        #
        plane = vtk.vtkPlaneSource()

        planeMapper = vtk.vtkPolyDataMapper()
        planeMapper.SetInputConnection(plane.GetOutputPort())

        planeActor = vtk.vtkActor()
        planeActor.SetMapper(planeMapper)
        planeActor.SetTexture(atext)

        # Create the RenderWindow, Renderer and Interactor.
        renderer = vtk.vtkRenderer()
        renWin = vtk.vtkRenderWindow()
        renWin.AddRenderer(renderer)
        iren = vtk.vtkRenderWindowInteractor()
        iren.SetRenderWindow(renWin)

        # Add the actors to the renderer, set the background and size.
        renderer.AddActor(planeActor)
        renderer.SetBackground(colors.GetColor3d("SlateGray"))
        renWin.SetSize(640, 480)

        # render the image
        renWin.Render()

        renderer.ResetCamera()
        renderer.GetActiveCamera().Elevation(-30)
        renderer.GetActiveCamera().Roll(-20)
        renderer.ResetCameraClippingRange()
        renWin.Render()
        iren.Start()

    def get_program_parameters():
        import argparse
        description = 'How to do basic texture mapping.'
        epilogue = '''
        '''
        parser = argparse.ArgumentParser(description=description, epilog=epilogue,
                                         formatter_class=argparse.RawDescriptionHelpFormatter)
        parser.add_argument('filename', help='masonry.bmp.')
        args = parser.parse_args()
        return args.filename

    if __name__ == '__main__':
        main()