> var v:EdgeMetrics = super.viewMetrics;
> your local variable v now contains a reference to the SAME EdgeMetrics instance that the Container is using; v and some var in the Container instance are "sharing" the same object. When you then assign
> v.left = ...
> you are modifying the shared EdgeMetrics instance.
<...>
By the way, I'd like to point one caveat I've run into a few times.
Properties like 'filters' (DisplayObject) and 'scrollRect'
(DisplayObject) return a *copy* of the object. Simply modifying the
value does't work: it needs to be assigned back. Properties like
'viewMetrics', on the other hand, return a direct reference.
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