Re: [Rails-devel] Background Maps

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This stuff is mostly new to me, but on a first look into Batik, I wonder if we could use the Batik Swing interface.
Should we change the map into a JSVGCanvas? 

Or two?  Because, to achieve displaying the map *below* the tiles, I had to insert a JLayeredPane, with the map on layer -1 (bottom) and the tiles on layer 0 (top).  Without that layered pane, it turned out the other way around (don't know why).

Erik 

P.S.  I changed the subject of this thread.

> -----Oorspronkelijk bericht-----
> Van: brett lentz [mailto:bre...@gm...]
> Verzonden: vrijdag 3 juni 2011 19:28
> Aan: Development list for Rails: an 18xx game
> Onderwerp: Re: [Rails-devel] 18EU: Background Map submission (revised
> version)
> 
> I have a feeling that old drawing code is just incredibly inefficient and adding
> the map might tip it over into unusability. I'll blame my limited understanding
> of AWT. It's probably time to refactor a bunch of that. ;-)
> 
> Some possible places to look for improvements:
> 
> 1.  It looks like we're still using AffineTransforms on the rasterized version of
> the hex. (A remnant from when we were still using GIF-based tiles. There is
> likely a way to get Batik to manipulate the vector-based format prior to
> rasterization in a more efficient way.
> 
> Once we rasterize the image, we should avoid changing it.
> 
> 2. There may be a better way to load the map than with
> BufferedImageTranscoder.
> 
> 3. Profiling the code will likely help quickly locate the reason drawing is slow.
> It looks like there's some profiling plugins available for Eclipse (
> http://www.eclipse.org/tptp/home/downloads/ ), but I'm not sure how well
> they work.
> 
> Though, simply adding a few debugging statements starting at paint() or
> paintComponent() might be sufficient to see how often they're called in a
> single rendering. It might just be a simple issue of repainting the window
> more often than we really need to.
> 
> 
> ---Brett.
> 
> 
> 
> On Fri, Jun 3, 2011 at 9:02 AM, Erik Vos <eri...@xs...> wrote:
> > OK, I have attached a patch file that includes all differences.  Hope it's not
> too big...
> > The main part is a trimmed version of the 18EU map, with all empty borders
> removed (by Inkscape).
> > I did that in the hope that it would help fixing the crash problem, but it
> didn't help at all.  But in any case I think it's better to avoid such empty
> borders.
> >
> > Erik.
> >
> >> -----Oorspronkelijk bericht-----
> >> Van: brett lentz [mailto:bre...@gm...]
> >> Verzonden: vrijdag 3 juni 2011 16:54
> >> Aan: Development list for Rails: an 18xx game
> >> Onderwerp: Re: [Rails-devel] 18EU: Background Map submission (revised
> >> version)
> >>
> >> On Fri, Jun 3, 2011 at 5:43 AM, Erik Vos <eri...@xs...> wrote:
> >> > I would like to give other people a chance to play with this new
> >> > stuff, but I'm not sure if I should commit my changes to the SVN
> >> > trunk.  Perhaps we should create a  branch for this experimental
> >> > feature (but I have no clue how to do that - I've never done
> >> branching  before).
> >> > On the other hand, I have already added a configuration property to
> >> > completely suppress the use of SVG maps, so probably no harm would
> >> > be done by putting this code into the trunk anyway.
> >> >
> >> > Suggestions?
> >> >
> >>
> >> Post your implementation to the list as a set of diffs. Perhaps just
> >> a second set of eyes can help spot the issue.
> >>
> >> > Erik.
> >>
> >> ---Brett.
> >>
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