Hello MITK users,
I am working on a MITK plugin and use the Volume Visualization plugin to
render a 3d DICOM-Dataset in a preprocessing step. After rendering the
DICOM-Dataset I want to change the lightning in the scene using my plugin.
The scene should contain one positonal light only.
My problem is that the lightsource seems to be a nonpositional for the
DICOM-Dataset. To check the light settings I added a vtkPlanesource to the
scene. The result is that the light behaves the way I supposed (influence
of the attenuation value and cone angel are reconizable). In the same scene
with the DICOM-Dataset only changes of the lightning direction lead to a
different lightning. The attenuation value and cone angel have no influence
on the lighning of DICOM-Dataset. I also changed the volume rendering
properities of the datanode containing the DICOM-Datatset and set the
ambient lightning to zero. So when I turn off the light the DICOM-Dataset
is completly dark, which proves that it is the only lightsource in the
scene (also reconizable on the vtkPlanesource where some parts are not
lighted).
The question: How is it possible to use positional lighning during the
volume visualization of a DICOM-Dataset?
Thanks for your help!
Sven
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