• David Gobbi's avatar
    Make streaming optional for the 3D image mappers. · 5e2432fb
    David Gobbi authored
    Previously, the default behavior of the 3D image mappers was to stream
    the data through the pipeline, meaning that only the part of the input
    image that was required to display one (possibly oblique) slice on the
    screen was updated.  However, this resulted in the UPDATE_EXTENT changing
    whenever a new slice was displayed, triggerring a pipeline update.
    
    The new default behaviour is to set the UPDATE_EXTENT to the WHOLE_EXTENT,
    so that the whole extent is updated on the first render, but no pipeline
    execution occurs on subsequent renders (e.g. while slicing through the data)
    unless the pipeline is modified.
    
    The StreamingOn() method can be used to revert to the old behavior.
    
    Change-Id: I76b31a2ae4b329885d755c2947b62f9a9474b88a
    5e2432fb
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