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# DisplayCoordinateAxes

VTKEx/Python/Visualization/DisplayCoordinateAxes

### Description

This example shows how to display the coordinate axes in the render window.

See also

Axes.

Other languages

See (Cxx), (Java)

Question

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### Code

DisplayCoordinateAxes.py

    #!/usr/bin/env python
    # -*- coding: utf-8 -*-

    import vtk

    def main():
        colors = vtk.vtkNamedColors()

        sphereSource = vtk.vtkSphereSource()
        sphereSource.SetCenter(0.0, 0.0, 0.0)
        sphereSource.SetRadius(1.0)
        sphereSource.Update()

        polydata = sphereSource.GetOutput()

        # Create a mapper
        mapper = vtk.vtkPolyDataMapper()
        mapper.SetInputData(polydata)

        # Create an actor
        actor = vtk.vtkActor()
        actor.SetMapper(mapper)

        # A renderer and render window
        renderer = vtk.vtkRenderer()
        renderWindow = vtk.vtkRenderWindow()
        renderWindow.SetWindowName("Display Coordinate Axes")
        renderWindow.AddRenderer(renderer)

        # An interactor
        renderWindowInteractor = vtk.vtkRenderWindowInteractor()
        renderWindowInteractor.SetRenderWindow(renderWindow)

        # Add the actors to the scene
        renderer.AddActor(actor)
        renderer.SetBackground(colors.GetColor3d("SlateGray"))

        axes = vtk.vtkAxesActor()

        widget = vtk.vtkOrientationMarkerWidget()
        rgba = [0] * 4
        colors.GetColor("Carrot", rgba)
        widget.SetOutlineColor(rgba[0], rgba[1], rgba[2])
        widget.SetOrientationMarker(axes)
        widget.SetInteractor(renderWindowInteractor)
        widget.SetViewport(0.0, 0.0, 0.4, 0.4)
        widget.SetEnabled(1)
        widget.InteractiveOn()

        renderer.GetActiveCamera().Azimuth(50)
        renderer.GetActiveCamera().Elevation(-30)

        renderer.ResetCamera()
        renderWindow.Render()

        # Begin mouse interaction
        renderWindowInteractor.Start()

    if __name__ == '__main__':
        main()