artemp/mapnik — Issue #847: Planet boundaries
Author: artemp
Created: 2011-10-11 16:38:53+00:00
State: open
Labels: Core_Library

On planet boundaries (-180th and 180th meridian) mapnik usually gives some artifacts:

http://latlon.org/~komzpa/screenshots/mapnik_planet_boundaries.jpeg

Artifacts are:
- parts of polygon lines go through 180th meridian;
- labels are cut off on different sides of it.

To cope with it, wold be nice to have options to:

- make label collisions think that there's nothing outside the world and it's better not to place labels that will go outside of it;

- don't draw lines that go straight on 180th meridian.