[Freeciv-Dev] Re: different iso drawing algorithms

[Rafa³ Bursig <bursig@xxxxxxxxx>]

Dnia 2002.12.11 21:04 Jason Short napisa³(a):
> On Sun, 2002-12-08 at 05:16, Jason Short wrote:
>
> > So, the question becomes: which system is better?  Should we support
> > just one of them, or try to support both?
>
> The tricky buffered drawing system requires slightly more GUI code to
> do
> the buffering.  A disadvantage is that it can only draw
> iso-rectangles.
> So if we update a 1x1 area we're fine.  But if we draw a 2x1 rectangle
> (as sometimes happens) we have to draw a couple of extra tiles.  If we
> redraw the entire mapview, then the current algorithm ends up
> iterating
> over 4x as many tiles as are necessary - but this inefficiency can be
> eliminated with a better algorithm.
Here is some code that make SDLClient compatible with new unification 
of update_map_canvas.
I made here some try to speed up draw full screen map.

I think that we should make dedicatet funct. to draw one tile, full map 
, etc not one unificated function to draw all cases.
Rafal


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iso_draw.diff
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