Circular heightmap

[zedrummer]

Hello

Could anyone tell me if there is a heightmap editor that:

- supports circular map, I mean: if you make modifications à the very right of the map, it modifies accordingly the very left and does the same vertically
- creates any size of map that can be then divided into let's say 1024x1024 sub-heightmaps, I mean: if the full heightmap is 10240x10240 it creates 100 1024x1024 sub-heightmaps and a 10x10-description table of the map or something like that

The final aim as you understand is to create a full planet which is represented by a square map but is still circular and you can load only the heightmaps that are in the sight distance.

Thanks

David

[Reedbeta]

A nitpick, but what you've described would be more like a toroidal planet than a spherical one. ;)

[zedrummer]

Ok sorry for the "spherical", but any answer?

[Wernaeh]

Actually, there is a nice feature in photoshop for the first part:

There is an offset filter, which allows to scroll your entire image, and wrap around the borders automatically. So, to create a tiling heightmap, you first draw your heightmap once. Then offset it by half its size into each direction and use some of the drawing tools (stamp, etc) to remove the now visible borders. (This approach can be used for tiling textures as well)

I guess a similar feature should be available from within freeware GIMP as well.

However, this is not really a "map editor" but rather some crude way around.

Since your requirements are quite specific, why don't you write your own tool ? A simple tool (just raising / lowering land, perhaps only single-textured previews) wouldn't take too long to devise I guess...

Cheers,
- Wernaeh