[vtkusers] give direction to cylinder

[Gonzalo Amadio]

I forgot to put the code, I only add this to the previous one

vtkSmartPointer<vtkTransform> transform =
> vtkSmartPointer<vtkTransform>::New();
> transform->RotateY(90);
>


vtkSmartPointer<vtkTransformPolyDataFilter> transF =
> vtkSmartPointer<vtkTransformPolyDataFilter>::New();
> transF->SetInput(cylinderSource->GetOutput());
> transF->SetTransform(transform);
> transF->Update();
>


vtkSmartPointer<vtkPolyData> cylinder = transF->GetOutput();


2012/7/18 Gonzalo Amadio <gonzaloamadio at gmail.com>

> 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
>
>


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