[josm-dev] Multipolygon stuff finished

[Frederik Ramm]

Hi,

Ulf Lamping wrote:
> Would you be interested in having a look at how to display them? My idea 
> would be to display the corresponding street signs somehow, but I'm not 
> 100% sure how to do it. You can find the corresponding street signs at 
> http://wiki.openstreetmap.org/wiki/Relation:restriction and I could 
> easily add them to the icon collection in SVG and other icon formats if 
> that is of any help ...

The challenge here will probably be two-fold: First, finding the right 
place to display the sign. (Different for left and right traffic btw.) 
Second, rotate the icon which is something we don't currently do.

For performance, I guess it will be required to create the rotated icons 
once and store them somehow, instead of rotating the icon whenever you 
want to draw it. A similar situation might occur in determining the spot 
where the icon should be displayed; it is probably unfeasible to do that 
calculation for every redraw.

(We might also have to support different signs for different countries, 
e.g. the "no left turn" is a white-on-blue straight on/right curved 
arrow in Germany, but a black-on-white left curved arrow with red 
strike-through in other countries...)

Bye
Frederik

-- 
Frederik Ramm  ##  eMail frederik at remote.org  ##  N49°00'09" E008°23'33"