mapnik-org/mapnik — Issue #615: Try another symbolizer when placement fails
Author: artemp
Created: 2011-10-11 08:05:16+00:00
State: open
Labels: Core_Library

When a symbolizer (point/shield) fails to render due to placement collisions, there is no way to know about that fact. If we did know this, we could have an Else construction to try another symbolizer when the first one failed to be placed.

It's already possible to have consecutive point/shieldsymbolizers in a rule, and everything but the first would already be dropped due to placement, but having explicit handling would seem better, and avoid trying subsequent symbolizers in the same rule.