[mapguide-users] patch for Ticket #743 / png8 transparency

Bruno Scott bscott at geomapgis.com
Wed Sep 26 08:35:32 PDT 2012

Hi jackie,

I've tried this also. And i have not see much difference on the resulting
The msquantization seem pretty smart, it compute a color histogram first.
For each color theres the amout of pixels used. Then it is sorted. So color
that are used mostly in the image will be in the palette.

When passing a predefined palette,we may reserve a color that is not use in
the images.
Then loosing some color accuracy

I've tested some tiled maps here, and they are all super nice.
I really would like to see other tileds maps, or having some feedback from
other users before applying this type of modification.

We could also replace the s_useColorMap memory flags by a serverconfig.ini

Bruno Scott

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