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> OTOH, since ROUTEs are from DEF names to DEF names, USEd
> objects can get you in trouble. If for example, you
> send a transform to the rotation field, all of the
> USE'd objects spin.
In SVG this is roughly similar-- but in general because of the box model
the rotations are cumulative-- so you can rotate a rotation without much
penalty. Where things get sticky in SVG is calculating out the CSS
inheritance and selectors. Applying textures maybe similar-- but
multiply that against all of the possible CSS properties and you don't
end up saving much time with regard to performance. To be fair to
Roger's original post, this is a slightly orthogonal tangent... it is
just a real world example where an id/idref mechanism isn't all it is
cracked up to be. Or in Len's case, is a far better approach.
Cheers,
Jeff Rafter
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