Replacing LineSource.py with Line.py.

src/Cxx/GeometricObjects/Line.cxx

-#include <vtkSmartPointer.h>
+#include <vtkActor.h>
 #include <vtkLineSource.h>
+#include <vtkNamedColors.h>
 #include <vtkPolyData.h>
 #include <vtkPolyDataMapper.h>
-#include <vtkActor.h>
 #include <vtkProperty.h>
-#include <vtkRenderWindow.h>
 #include <vtkRenderer.h>
+#include <vtkRenderWindow.h>
 #include <vtkRenderWindowInteractor.h>
-#include <vtkNamedColors.h>
- 
+#include <vtkSmartPointer.h>
+
 int main(int, char *[])
 {
   // Create two points, P0 and P1

src/Python/GeometricObjects/Line.py

+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+import vtk
+
+
+def main():
+    # Create two points, P0 and P1
+    p0 = [1.0, 0.0, 0.0]
+    p1 = [0.0, 1.0, 0.0]
+
+    lineSource = vtk.vtkLineSource()
+    lineSource.SetPoint1(p0)
+    lineSource.SetPoint2(p1)
+
+    # Visualize
+    colors = vtk.vtkNamedColors()
+
+    mapper = vtk.vtkPolyDataMapper()
+    mapper.SetInputConnection(lineSource.GetOutputPort())
+    actor = vtk.vtkActor()
+    actor.SetMapper(mapper)
+    actor.GetProperty().SetLineWidth(4)
+    actor.GetProperty().SetColor(colors.GetColor3d("Peacock"))
+
+    renderer = vtk.vtkRenderer()
+    renderWindow = vtk.vtkRenderWindow()
+    renderWindow.AddRenderer(renderer)
+    renderWindowInteractor = vtk.vtkRenderWindowInteractor()
+    renderWindowInteractor.SetRenderWindow(renderWindow)
+
+    renderer.SetBackground(colors.GetColor3d("Silver"))
+    renderer.AddActor(actor)
+
+    renderWindow.Render()
+    renderWindowInteractor.Start()
+
+
+if __name__ == '__main__':
+    main()

src/Python/GeometricObjects/LineSource.py

-import vtk
-
-# create a rendering window and renderer
-ren = vtk.vtkRenderer()
-renWin = vtk.vtkRenderWindow()
-renWin.AddRenderer(ren)
-
-# create a renderwindowinteractor
-iren = vtk.vtkRenderWindowInteractor()
-iren.SetRenderWindow(renWin)
-
-
-# create source
-source = vtk.vtkLineSource()
-source.SetPoint1(1, -1, 0)
-source.SetPoint2(2, -3, 0)
-
-# mapper
-mapper = vtk.vtkPolyDataMapper()
-mapper.SetInputConnection(source.GetOutputPort())
-
-# actor
-actor = vtk.vtkActor()
-actor.SetMapper(mapper)
-
-# color actor
-actor.GetProperty().SetColor(1, 0, 1)
-
-# assign actor to the renderer
-ren.AddActor(actor)
-
-# enable user interface interactor
-iren.Initialize()
-renWin.Render()
-iren.Start()