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For the speed theme, I suggest to render faster lines on top of slow ones. I guess that the speed theme is used by people who want to find which and where the fast lines are. Currently, this doesn't work well: E.g. the Lötschbergbasistunnel at 250 km/h is not visible in many zoom levels, since the slower Lötschberg-Bergstrecke is visible instead (in some zoom levels, the number "250" from the Lötschbergbasistunnel is visible, but the color is the 80 km/h turquoise of the Lötschberg-Bergstrecke. The problem is also widespread in Austria.
Philipp
On So, 2014-02-23 at 19:13 +0100, Philipp Klaus Krause wrote:
For the speed theme, I suggest to render faster lines on top of slow ones. I guess that the speed theme is used by people who want to find which and where the fast lines are. Currently, this doesn't work well: E.g. the Lötschbergbasistunnel at 250 km/h is not visible in many zoom levels, since the slower Lötschberg-Bergstrecke is visible instead (in some zoom levels, the number "250" from the Lötschbergbasistunnel is visible, but the color is the 80 km/h turquoise of the Lötschberg-Bergstrecke. The problem is also widespread in Austria.
as you can see in the stylesheet [1], the value of z-index is already dependent on the maxspeed (except from some highspeed lines). So a line with 80 km/h maxspeed should not be drawn on the top of a highspeed line.
I do not know why the lines are still rendered in a different order. Maybe the order of the MapCSS rules has an influence on the drawing priority. I can try to invert their order.
It seems that this problem also occurs in JOSM.
[1] https://github.com/rurseekatze/OpenRailwayMap/blob/master/styles/maxspeed.ma...
Regards Alex
Hello,
On So, 2014-02-23 at 19:13 +0100, Philipp Klaus Krause wrote:
For the speed theme, I suggest to render faster lines on top of slow ones. I guess that the speed theme is used by people who want to find which and where the fast lines are. Currently, this doesn't work well: E.g. the Lötschbergbasistunnel at 250 km/h is not visible in many zoom levels, since the slower Lötschberg-Bergstrecke is visible instead (in some zoom levels, the number "250" from the Lötschbergbasistunnel is visible, but the color is the 80 km/h turquoise of the Lötschberg-Bergstrecke. The problem is also widespread in Austria.
i fixed this bug.
The problem was the built-in layering of the renderer. This caused that highspeed lines were hidden by lowspeed lines because the highspeed lines were tunnels with layer=-1. Now I have modified the renderer, so that he ignores any tunnel/bridge/layer tag in the maxspeed layer. [1]
There were also some modifications of the MapCSS style necessary because JOSM and KothicJS seem to have problems with too complex rendering rules. [2]
The changes can be seen after the next rerendering of the tiles or manually by adding "/dirty" at the URL of a tile.
[1] https://github.com/rurseekatze/node-tileserver/commit/18efa0f1eba22ab36ec38e... [2] https://github.com/rurseekatze/OpenRailwayMap/commit/07e81da646d1808fd484263...
Regards Alex
openrailwaymap@openrailwaymap.org
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Alexander Matheisen -
Philipp Klaus Krause