[Freeciv-Dev] Re: (PR#3936) introducing native coordinates

[Jason Dorje Short <vze49r5w@xxxxxxxxxxx>]

Raimar Falke wrote:
> On Sun, Apr 13, 2003 at 05:37:59PM -0500, Jason Dorje Short wrote:
>
> > > > This is a clever(ish) way to define an operation on "native" coordinates 
> > > > that really uses map coordinates.  Unfortunately, in addition to 
> > > > being extremely inelegant
> > > I disagree. It is one place less which is topology dependent.
> > Actually it is one more place which is topology dependent - since this 
> > (DIR_DX/DIR_DY) would not otherwise be a topology-dependent operation. 
> > The only places that care whether the topology is isometric are 
> > native_to_map_pos, map_to_native_pos, and the mapview window-clipping 
> > function.
As a side note, doing DIR_DX/DIR_DY in native coordinates is impossible 
since the vectors are not constant for all positions.
jason