[Therion] Multiple layers of overlayed maps

[marco corvi]

Hi Bill,

maybe this helps 
note: the whole outline of 2 and 3 appear in 1.
maybe you raised an issue: 
maps at offset with no global preview, so that one can
specify to draw partial previews 

map main ...
  map1
  map23 [200 30 ft] above
endmap

map map23 ...
  map2
  map3 [200 30 ft] above
endmap

map map1 ...
  whatever1
endmap

map map2 ...
  whatever2
endmap

map map3 ...
  whatever3
endmap

On Mon, 2010-12-13 at 11:00 -0600, Bill Gee wrote:
> Hello everyone - 
> 
> Therion 5.3 (stable) running on Fedora 14 ...
> 
> I am working on a cave which has a very complex maze area.  Basically the maze 
> area can be divided into either 3 or 4 layers (depending on how you draw it) 
> which are stacked on top of each other like a cake.  I want to produce a map 
> where the lowest part of the maze displays with the rest of the main passage, 
> and each higher layer of the maze is offset from the layer below it
> 
> So far I have figured out how to get one layer to offset and have its outline 
> (the "preview", I think) display over the main passage.  Now I want to take 
> the next layer and have its outline display over the layer below.  Here is 
> what I think should happen in the .TH file:
> 
> ===============
> map MainCaveMap -title "Elkton Cave - Plan View" -projection plan
>   MainPassage at ElktonCave
>   UpperMaze at ElktonCave [200 30 ft] above
>   UpperMaze2 at ElktonCave [200 -100 ft] above
> endmap
> 
> map MainPassage -title "Elkton Cave - Plan View" -projection plan
>   (many scraps, names removed for clarity)
> endmap
> 
> map UpperMaze -title "Upper maze area" -projection plan
>   MazeA
>   MazeB
>   MazeA2
>   preview above MainPassage
> endmap
> 
> map UpperMaze2 -title "More upper maze" -projection plan
>   MazeC
>   MazeD
>   preview above UpperMaze
> endmap
> ================
> 
> When I compile the map, it draws the offset maps correctly,  However, ALL of 
> the outlines are over the MainPassage map.  I don't want that ...  I want an 
> outline of UpperMaze over MainPassage, then I want an outline of UpperMaze2 
> over UpperMaze.  I thought that is what would happen with the "preview" 
> directive.
> 
> Does anyone have suggestion?
> 
> Thanks - Bill Gee
> 
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