[OpenLayers-Users] Tile boundary rendering

[Christopher Schmidt]

On Mon, Nov 27, 2006 at 02:02:12PM -0800, Ben Brehmer wrote:
> Hello Everyone,
> 
> I am running mapserver and TileCache for server-side tile caching.
> 
> I have attached some snapshots of something that is quite common on my 
> map. Some of the roads (mostly diagonal ones) have chunks missing 
> wherever they encounter a tile edge.
> 
> After some investigating I figured out the cause of this problem:
> The roads on my map are drawn with a circle symbol. If a road intersects 
> a tile edge at 90 degrees the rounded end is chopped off cleanly. But if 
> the road intersects a tile edge at an angle, part of the rounded end is 
> shown and causes a very undesirable effect.

Sounds like
http://crschmidt.net/blog/archives/154/mapserver-rendering-bug/ //
http://crschmidt.net/mapping/mapserverbug.png ?

> So I guess my question is, is there a buffer (or similair) in TileCache 
> that can be set to specify the amount that is rendered past the edge of 
> a tile?

Not yet. Keep an eye out for this support in the next version of
TileCache.

Regards,
-- 
Christopher Schmidt
MetaCarta