[Webkit-unassigned] [Bug 33520] Mapping from local to container coord space is O(N^2)

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=33520





--- Comment #5 from Eric Seidel <eric at webkit.org>  2010-01-12 04:47:08 PST ---
Keeping the current transform as we traverse has precedent with things like
LayoutState:
http://trac.webkit.org/browser/trunk/WebCore/rendering/LayoutState.h
(Only related to this discussion as an example of keeping side-state around
during a rendering tree traversal.)

Were I to re-write the rendering tree, I would change all classes to deal with
IntPoints in the local coordinate system (content box) instead of the current
system where your x/y are passes as separate integers and are relative to your
containing block.  Then again, that's mostly orthogonal to this issue.

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