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From Andreas Neumann <neum...@karto.baug.ethz.ch>
Subject Re: delayed mouse-over effect for first time of mouse-over
Date Mon, 20 Oct 2003 20:17:53 GMT
>     It is the building of the sensitive regions.  I have a quick fix
> that
> uses a faster computation of the 'sensitive' bounding boxes and then
> when

good to hear. - yes, to use the bounding box first is definitely a good idea.

> the BBox is penetrated the true sensitive region is computed.  This
> eliminates
> the initial 'pause' - however some of the states take over 400ms to
> generate
> the sensitive region (Texas in particular).  This is because we do

yes - the difference in geometry size is enormous - but that's the nature of
cartography. You might have very simple path-elements and in the same file very
complex path-elements.

> actually
> do a geometric union of the fill/stroke (and markers) to get this
> region*.
>     I will try and deliver the code tonight.

just take your time. It's not that urgent for me - but it would help me in the
long run ...

I meanwhile checked out the CVS version - which was much easier than expected
and tested your bug-fix from yesterday regarding the toggling of the raster
image. Works fine now.


The only thing that stands between a man and what he wants from
life is often merely the will to try it and the faith to believe
that it is possible ...
-- M. DeVos
Andreas Neumann - Department of Cartography     
Swiss Federal Institute of Technology (ETH)     
ETH Hoenggerberg, CH-8093  Zurich, Switzerland     
Phone: ++41-1-633 3031, Fax: ++41-1-633 1153     
e-mail: neumann@karto.baug.ethz.ch     
www: http://www.karto.ethz.ch/neumann/     
SVG.Open/Carto.net: http://www.svgopen.org/     

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