/*
finalizeLatestTime() should be invoked BEFORE
mergeVerticalShadowBufs() and shiftHorizontalShadowBuf() are called
*/
public void finalizeLatestTime(final Drawable last_drawable_added) {
if (childnode == null) // i.e. if ( super.isLeaf() )
super.setLatestTime(last_drawable_added.getLatestTime());
else // if ( childnode != null )
super.setLatestTime(childnode.getLatestTime());
if (shadowbuf != null) {
// After setting the LatestTime, seal the shadows' category weights
shadowbuf.setLatestTime(super.getLatestTime());
shadowbuf.initializeMapOfCategoryWeights();
}
}
