[vtkusers] Scalar to opacity mapping for vtkImageProperty

[David Gobbi]

Hi Doug,

The opacity is the fourth column of the lookup table (i.e. the lookup table
is RGBA).  So you can use the lookup table to set the opacities.

 - David

On Mon, Dec 5, 2016 at 11:56 AM, Doug Hoppes <dhoppes at mbfbioscience.com>
wrote:

> Hey All,
>
>
>
>                 In the vtkVolumeProperty, there are methods to set the
> scalar opacity.  Is there an equivalent method for the vtkImageProperty?
> In my case, I have a vtkvolume that I use the resliced mapper to get
> individual slices.  The user loves the ability to set the opacities in the
> volume individually (we do this using the setScalarOpacity) and would like
> to do this for the slices.  However, I don’t see that the vtkImageProperty
> has a function to do this…. Or I’m missing something.
>
>
>
> Dougie
>
>
>
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