[Mapcss] Collisions

[Richard Fairhurst]

Komяpa wrote:
> So, I propose to add the following things:
>
> collision-sort-by: (tag/eval()) - a value used for sorting items
>    within z-index and layer when rendering;
> collision-sort-order: asc/desc, by default desc;

Good idea.

I'd suggest renaming to collision-index and collision-index-sort. This 
is analogous with z-index and therefore more CSS-like.

Also, we should probably have 'ascending' and 'descending' rather than 
'asc' and 'desc' (CSS doesn't generally use abbreviations).

> font-size should be allowed not only an exact value, but also a list
> of different sizes, tried to be used from start to the end. If a
> renderer doesn't want to support that, it should just stick to the
> first value

That's analogous to the way font-family works, so yes, I like that. :)

> text-placement, with default value "exact". pssible:
>   - "any" - whatever renderer decides;
>   - "exact" or just "X" - the one that was chosen otherwise (centered,
> offsetted down by text-offset);
>   - N, E, S, W, NE, SE, NW, SW, X - values, that can be separated by
> commas. show where a label can be shifted instead of "down" by
> "text-offset" amount of pixels.

Sounds good, but again, I think CSS doesn't do abbreviations. So 
'north', 'east', 'south' etc. etc. It's not much more to type and it's 
much more readable. :)

cheers
Richard