Hi Sergey,

> I heard once that there are plans to inroduce DirectDrawLayer (or like),
> i.e. layer allowing drawing of custom objects?

There is some progress towards this (finally) as part of the current
rewriting of much of the swing module plus Jody's recent addition of
new Layer classes in the render module.

There is now a minimal DirectLayer class...
http://svn.osgeo.org/geotools/trunk/modules/library/render/src/main/java/org/geotools/map/DirectLayer.java

This subclass illustrates one simple use of it (although this one only
uses screen coordinates)...
http://svn.osgeo.org/geotools/trunk/modules/library/render/src/main/java/org/geotools/map/direct/MessageDirectLayer.java

Next, I am adding an option to JMapPane to use multiple backing images...
http://jira.codehaus.org/browse/GEOT-3746

Putting these two things together the idea is to draw the feature data
into one (or more) backing image while custom graphics are drawn by a
DirectLayer sub-class into a separate backing image. The latter image
is then displayed over the feature data image(s).

I will be working on this next week. If you could help with data or
code for testing that would be great.

Michael

PS: here is a link to the Jira issues for the swing module so you can
see what's been happening...

http://jira.codehaus.org/secure/IssueNavigator.jspa?reset=true&jqlQuery=project+%3D+%22GEOT%22+and+component+%3D+%22swing%22+order+by+created

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