[mapserver-dev] Transparency attribute on Layer Object

[David Graham]

Developers:

I would like to know if anyone is working on a project to add transpency 
to Layer Objects that are of type raster data.  If not I am trying to 
size the effort required to add the ability to specify a transparency 
parameter in the layer object (map file) that could indicate % of the 
imagery to blend with existing data at rendering time.  The idea is to 
be able to blend multiple raster layers each overlaying the last.  Since 
the we now have 24bit support this should not be too difficult.

Currently my requirements are only for Raster data, but it would be 
useful to eventualy extend the functionality to vector polygons filling 
also.  I am less familiar with that side of the code.

Dave Graham

-- 
David W. Graham
Director of Geospatial Applications Development
information integration and imaging, LLC
201 Linden St, Third Floor
Fort Collins, CO 80524
(970) 482-4400
dgraham at i3.com
http://www.i3.com