[vtkusers] vtkImageResliceMapper and vtkVolumeRayCastMapper opacity

[Jose Ignacio Prieto]

Hi all,

I am trying to develop a visualization app for MR images. I would like to
show a surface rendering for some intensity level blended with a plane
slice, so that you can see the image in the plane while getting some
orientation of its position in the whole image.

I set some opacity value for the plane and another one for the vol
rendering. For the plane I set 0.1, while for the volume I set a 0-1
opacity step function after some intensity value. The problem is that when
the plane is on top of the volume, the plane transparency would let me see
the background, but not the volume that is just behind. The situation can
be appreciated on the image attached. On the left side is the plane with
some transparency that let you see background. On the right is the vol
rendering that is clipped by the same plane as the plane image.

Thank you very much for your advise

Greetings,

Ignacio Prieto

-- 
José Ignacio Prieto
Software Developer
Biomedical Imaging Center,
Pontificia Universidad Catolica de Chile
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