[vtkusers] How to color cylinder with different colors

[Divya]

Dear All,

I want to color a cylinder like the image attached. I have tried 
combining 2 different cylinder source with different colors but I am 
getting the following result


  Any help will be greatly appreciated.

My source code is as follows:

vtkCylinderSource catheter = vtkCylinderSource.New();
             catheter.SetRadius(1);
             catheter.SetHeight(15.0);
             catheter.Update();
             //catheter.CappingOn();

             vtkFloatArray cylColor1 = vtkFloatArray.New();
             cylColor1.SetNumberOfComponents(3);
             cylColor1.SetName("Color1");

             for (int i = 0; i < 
catheter.GetOutput().GetNumberOfPoints(); i++)
             {
                 cylColor1.InsertTuple3(i, 255, 0, 0);
             }
catheter.GetOutput().GetPointData().SetScalars(cylColor1);

             vtkCylinderSource catheter2 = vtkCylinderSource.New();
             catheter2.SetRadius(1);
             catheter2.SetHeight(10.0);
             catheter2.Update();
             //catheter2.CappingOn();

             vtkFloatArray cylColor = vtkFloatArray.New();
             cylColor.SetNumberOfComponents(3);
             cylColor.SetName("Color2");

             for (int i = 0; i < 
catheter2.GetOutput().GetNumberOfPoints(); i++)
             {
                 cylColor.InsertTuple3(i, 0, 0, 255);
             }
catheter2.GetOutput().GetPointData().SetScalars(cylColor);

             // append both polydata sets
             vtkAppendPolyData apd = new vtkAppendPolyData();
             apd.AddInput(catheter.GetOutput());
             apd.AddInput(catheter2.GetOutput());
             apd.Update();

             ////vtkCleanPolyData cleanFilter = vtkCleanPolyData.New();
             ////cleanFilter.SetInput(apd.GetOutput());
             ////cleanFilter.Update();

             vtkPolyDataMapper catheterMapper = vtkPolyDataMapper.New();
             catheterMapper.SetInputConnection(apd.GetOutputPort());
             catheterActor.SetMapper(catheterMapper);

-- 

Regards,
*DIVYA SADANANDAN
Software Engineer*
Triassic Solutions Pvt. Ltd.
(+91) 471 2700050 (Office)
7736382699 (Mobile)
<http://www.triassicsolutions.com>

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