[IGSTK-Users] Problem while linking ObjectRepresentations with mouse events

[Vincent Gratsac]

Hi igstk-users,

I'm developing a Qt application which will be able to open as many 
SpatialObjects as the user wants.
Now I'm working on linking ImageSpatialObjectRepresentations with mouse 
events.

My problem appears when I want to update all Representations' slice 
number, depending on mouse coordinates :

    - First, there is no method like RequestGetImageSpatialObject() in 
the ImageSpatialObjectRepresentation class, so I can't call 
TransformPhysicalPointToIndex() method for translating mouse coordinates 
to image slice. I found no way to know which image object is related to 
each representation.

    - Second, I can't get the Representation's orientation. So I don't 
know which coordinate component I have to use when calling the         
RequestSetSliceNumber() method. (x, y or z ?)

I suppose that ImageSpatialObject and Orientation are not exposed in the 
ImageSpatialObjectRepresentation class for security reasons...

Actually, the only solution is can see would be to "manually" store 
relation between an ImageSpatialObjectRepresentation and its 
ImageSpatialObject and Orientation.

Does anyone have suggestions which could help me ?

Thank you,

Vincent


-- 
Vincent Gratsac
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Unité/Projet VisAGeS U746
INSERM/INRIA/CNRS/U. de Rennes I
IRISA
Campus de Beaulieu, 35042 Rennes Cedex, France

Ph:  +33 (0) 2 23 23 49 20/ Fax: +33/0 2 99 84 71 71
email: Vincent.Gratsac at irisa.fr
http://www.irisa.fr/visages/
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