[vtkusers] give direction to cylinder

[Gonzalo Amadio]

That seems to work. But I have another problem now.

When I rotate the cylinder, the center don't remain in the original
position where it is set.

Trying to being more clear, imagine my original cylinder is a clock hand
pointing to number three. so the center is between the center of the clock
and number three. When I rotate it for example 90, the hand is pointing to
number twelve, so the center is not more between the center of the clock
and number 3, instead is between center and number 12.

Thank you for helping!

2012/7/18 David Doria <daviddoria at gmail.com>

> On Wed, Jul 18, 2012 at 7:14 AM, Gonzalo Amadio <gonzaloamadio at gmail.com>wrote:
>
>> Thank you for the response..
>>
>> I am reading this : http://www.vtk.org/doc/release/5.6/html/a02007.html that
>> I think is what I need. Because I don't have all the mapper and actor part
>> and as it is said there, if I am not understanding wrong, vtkTransfrom work
>> on the actor and rendering part, and vtkTransformPolyDataFilter directly on
>> the rotation of the figure itself :
>>
>> " The difference between the two methods is that vtkActor's
>>> transformation simply effects where objects are rendered (via the graphics
>>> pipeline), whereasvtkTransformPolyDataFilter<http://www.vtk.org/doc/release/5.6/html/a02007.html> actually
>>> modifies point coordinates in the visualization pipeline"
>>
>>
> That is correct:
> http://www.vtk.org/Wiki/VTK/Examples/Cxx/Filters/TransformPolyData
>
> David
>



-- 
--------
Gonzalo Amadio
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