Hi Chris,
I am no OpenGL or graphics expert. Maybe the complete render process has to be
done different. But as
long as no one donates a better solution you have to live with mine.
The map canvas is composed by three layers. The map layer, the DEM layer and
the GIS layer. Each layer is
rendered independently in it's own thread. Thus all layers are rendered in
parallel. By that a modern
multicore CPU is used to it's advantage and the render process is fast, giving
a good feedback to user
interaction.
As explained in the past, the hill shading overlay is a full featured hill
shading. It's not only darkening the
south eastern slopes, as QLGT does. It's also adding structure to north western
slopes. On the one hand
side this is nice as it adds more information to the map. On the other hand
side the maps appearance is
kind of milky.
There are probably better ways to brighten or darken colors. However as the map
is calculated in parallel
the DEM layer can't influence the map colors. That would be possible if the DEM
layer waits for the map
layer to finish rendering. But then everyone would complain that rendering is
slow.
Besides I don't think that the hill shading is that bad. If you carefully fine
tune opacity and the dynamic range
(that is the second slider) you get nice results without too much of a blur.
Oliver
Am Freitag, 22. Mai 2015, 22:37:00 schrieb zero:
> Hello,
> I just wanted to add my point of view (as I already did few weeks ago
> about the same topic):
> on attached screenshot you can see twice the same data :
> openmtbmaps(without surfaces) + DEM gif built with data from viewPanorama.
> On the left I activated the DEM VRT layer on the "maps" tab".
> On the right I use the dedicated "DEM" tab.
>
> On the left DEM data is poor but ways are really nicely clearly displayed
> on the right DEM data is good but ways are greyed out.
>
> Is there a way to put the "good DEM" layer under the vector layer ? (in
> other words how to have the best of the right and left sides ?)
>
> Thanks for your help,
>
> Chris
>
> Le 22/05/2015 21:26, Oliver Eichler a écrit :
> > Ok I revert the patch
> >
> > Am Freitag, 22. Mai 2015, 20:29:12 schrieben Sie:
> > > Oliver Eichler <[email protected]> writes:
> > > > The opacity of the area polygons is decreasing twice as fast than the
> > > >
> > > > one of the lines now. You can experiment a bit on your own if you
> > > >
> > > > edit CMapIMG.cpp line 1299
> > >
> > > I see.
> > >
> > >
> > >
> > > I didn't recognize the change because in my view, freizeitkarte is at
> > >
> > > the bottom with full opacity, and it's overlaid with google maps.
> > >
> > >
> > >
> > > I did that by intent. Because, if I do it the other way round (with
> >
> > > freizeitkarte on top), labels from freizeitkarte look very bad:
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