Re: [nbos] [freq] Z-order manipulation
Chris Csernica
Fri Jun 26th, 2009
I enthusiastically second this. It's not been much on my mind since I
haven't been working much on my own maps lately, but this has been a
serious pain.

keith.davies-at-kjdavies.org wrote:
> Hi Ed,
>
> When changing Z-order (front to back, move to back, etc.), it appears
> the selected object gets moved back one step at a time, compared to all
> objects on the map. This means it can take a long time to get things
> into position.
>
> I think normally when someone moves an object back (for example), he
> doesn't want to move it back compared to something on the other side of
> the map, but compared to the items that overlap it. For instance, last
> night I was trying to get a polygon behind a river (from the same map I
> posted a link to with the feathering question, as it happens). I ended
> up leaning on the ^B for a while pushing it back, because I'd drawn the
> river some time earlier. Going the other way (sending it all the way
> back, then inching it forward until it was in front of the landmass)
> would've been about as bad.
>
> Can the Z-ordering functions be changed so they move to the 'other side'
> of objects that overlap the one being moved? I believe that would be
> much more efficient for the user. It changes
>
> * draw mountain (symbols)
> * draw river
> * draw 'mountain shading' (grey polygon to be placed behind the symbols
> and river), push back until it gets behind the river and all the
> mountain symbols
>
> to
>
> * draw mountain (symbols), group
> * draw river
> * draw 'mountain shading', push back twice (once for river, once for
> mountains)
>
> That I suddenly jump past the non-overlapping items drawn after the
> mountain and river doesn't affect anything else when it comes to
> rendering, as far as I can see.
>
>
> Thanks,
> Keith

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