Status: Layer organisation

[Bernhard Reiter]

On Fri, Dec 31, 2004 at 01:13:45AM -0500, Russell Nelson wrote:
> bh at intevation.de (Bernhard Herzog) writes:
>  > Martin Schulze <joey at infodrom.org> writes:
>  > >  2. If 1. we should see why transparency is currently not supported by
>  > >     Thuban
>  > 
>  > The reason is simple: It's not easy to do with a wxDC.  It would be
>  > possible and probably not even difficult to do a gif-like transparency
>  > (effecively one bit alpha channel, every pixel is either drawn or not).
> 
> Actually .... There's a step needed prior to this one.  If you have
> multiple raster layers, Thuban should draw them on top of each other.
> Currently, if I load a map which is 1000 x 1000 pixels, and and
> another map which is 200 x 200 pixels and overlaps the first, Thuban
> only displays one of them.
> 
> There only seems to be code for drawing one background bitmap.

True, another long standing wish.
https://intevation.de/rt/webrt?serial_num=2301&display=History
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