[vtkusers] Different alpha values for scalars

[Sebastien Jourdain]

You can also set alpha in your lookuptable...

On Wed, Mar 17, 2010 at 9:29 AM, Sebastian Gatzka <
sebastian.gatzka at stud.tu-darmstadt.de> wrote:

>  Sounds good.
>
> And how can I mange to unite three different actors on one single cutting
> plane?
>
> Sebastian
>
> Am 10.03.2010 16:05, schrieb Rakesh Patil:
>
> hi..
>
> one option is you can use vtkThreshold, if your threshold ranges are
> fiixed.. Like in your example, there are three conditions.. So three times,
> u can use vtkThreshold class and create that many actors..
>
> Any other way is there my friends..??
>
> Thanks
>
> Regards
> Rakesh Patil
>
>
> ---------- Original message ----------
> From:Sebastian Gatzka< sebastian.gatzka at stud.tu-darmstadt.de >
> Date: 10 Mar 10 17:50:06
> Subject: [vtkusers] Different alpha values for scalars
> To: vtkusers at vtk.org
>
>
>
> Hello world.
>
> Do you know if it's possible to assign different alpha values to a scalar
> field representation (for example on a cutting plane)?
>
> I want to have scalar to be more transparent if they are below some defined
> threshold.
> For example something like this
>
>    - scalar < 0.1 : alpha = 0.3
>    - 0.1 < scalar < 0.5 : alpha = 0.7
>    - scalar > 0.5 : alpha = 1.0
>
> Do you know how I can manage this?
>
> Sebastian
>
>
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