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Re: Backend and non-backend (was Re: Stencil bounding box)

From: David Feuer
Subject: Re: Backend and non-backend (was Re: Stencil bounding box)
Date: Mon, 1 May 2006 23:13:21 -0400

On 5/1/06, Han-Wen Nienhuys <address@hidden> wrote:

Given that we haven't had anyone writing or modifying the backend in the
past 5 years, I doubt that there is much need for this.

I've been working on it ...

it should take geometry and appearance into account, ie. where the
symbols end up on the page, and how large they are. What I would really
want is to have a similarity measure for the image produced by two PDF
files, but that's a rather hard problem, and it will be easier if we
take advantage of the fact that we can access the backend.

Well, if you care about where things are on the page, one option would
be just to compare PNGs.  Otherwise:  the new backend design I'm
considering would flatten stencils.  This should make it really easy
to pull out a list of elements, sorted in any convenient fashion.


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