[vtkusers] Cylinder Anti-Aliasing

[Jon Payne]

> Hi Jon,
>
> I'v tried to use OpenGL function directly with no sucess.
> Do you or someone know how to make this anti-aliasing over vtkCylinderSource?
>
> Regards
>
> On Tue, May 24, 2011 at 11:24 AM, Thiago Macedo<tmacedo29 at gmail.com>  wrote:
>> Hi Jon,
>>
>> firstly, thank you for your prompt answer.
>> Actually, I'm already using all the *SmoothingOn() funcions. The
>> attached image, in my last e-mail, already has the 3 Smoothing algo.
>> as ON.
>> Anyway, I'll try the OpenGL command too.
>>
>> Regards,
>>
>> On Tue, May 24, 2011 at 11:13 AM, Jon Payne<jpayne at hgl-dynamics.com>  wrote:
>>> On 24/05/2011 14:12, Thiago Macedo wrote:
>>>> HI All,
>>>>
>>>> I've tried to find a way to make a cylinder as smooth as lines when
>>>> LineSmoothingOn(), but it seems nothing is really working.
>>>> Attached I'm sending a screenshot.
>>>> Could someone help me?
>>>>
>>>> Regards
>>> Hi Thiago ,
>>>
>>> I think you'll need the following for a cylinder if not a wire-frame:
>>> PolygonSmoothingOn();
>>>
>>> I generally do:
>>>
>>>     renderWindow->LineSmoothingOn();
>>>     renderWindow->PointSmoothingOn();
>>>     renderWindow->PolygonSmoothingOn();
>>>     glHint(GL_POINT_SMOOTH_HINT, GL_NICEST);
>>>
>>> Cheers,
>>> Jon
>>>
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>>
>>
>> --
>> Thiago B. Macedo
>>
Hi Thiago,

The proper solution I suppose is to enable anti-aliasing but that relies 
on Open GL extensions... I did try to enable it some time ago but was 
unsuccessful. Haven't got around to looking it to what was preventing it 
from working I'm afraid.

Ah, also, bare in mind that you need to do:

     renderWindow->SetMultiSamples(0);
     renderWindow->AlphaBitPlanesOn( );  // not sure if this is needed


Cheers,
Jo

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