[caret-users] Translucent fiducial surface?

[David Van Essen]

Leeland,

You can get translucency by converting to a vtk model using the Save  
option for the Caret coordinate file.  This can also preserve surface  
coloration.  I don't have a lot of experience with this, but John may  
be able to provide additional tips now that he is back from Australia.

David VE

On Jun 26, 2008, at 8:46 AM, Donna Dierker wrote:

> Hi Leeland,
>
> I don't think so, but David will correct me if I'm wrong.  (John will
> return from Australia next week; he would know best.)
>
> There is a way under D/C: Surface Miscellaneous to turn the drawing  
> mode
> to Nodes or Hide Surface, but neither of these will give you what you
> want.  You could toggle back and forth the Partial View options, but
> this isn't any better than just toggling Toolbar:L and Toolbar:M to
> switch sides.  Would selecting Window: Window 2 and setting Window 2  
> to
> medial view, main window to lateral work?
>
> If you actually want to combine/sum the metrics on either side, then I
> would generate the sum directly as a new combined metric overlay.   
> With
> more knowledge of the surface type and how the respective sides
> relate/align, I could elaborate.
>
> Here is an example of how it might work:  Let's say the surface is a
> sphere.  Metric 1 is good; we like it like it is.  Metric 2 is one we
> want to flip along some axis and sum with metric 2.  We project  
> Metric 2
> to a volume via Attributes: Metric.  We either flip the volume along  
> the
> axis of interest, or we flip the surface and map the volume to the
> flipped surface.  Now we can sum metric 1 and metric 2 to create  
> metric
> 3 (sum metric1 + [xyz]-flipped metric 2).
>
> I may be way off track, but at least now you know how to steer my  
> thinking.
>
> Donna
>
> On 06/25/2008 05:30 PM, Leeland Ekstrom wrote:
>> Hi,
>>
>> Is there some way in Caret to alter the opacity of the fiducial  
>> surface
>> itself (i.e. when viewing a 3D inflated surface, reduce the opacity  
>> of
>> the surface itself to something like 50%, so that metric blobs on  
>> both
>> medial and lateral sides of the brain could be seen simultaneously)?
>> The 'opacity' parameter on the 'Overlay/Underlay - Surface' dialog  
>> seems
>> to only alter overlays and underlays, and not the base surface itself
>> upon which these different surfaces are visualized.
>>
>> Thanks for your help,
>> Leeland
>>
>>
>
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