Layer TYPE UNION fails if one or more of the source layers is not in the current extents

[cnieman]

I've been playing around with the new MapServer 6.0 (built from svn trunk) features and encountered a problem with UNION layers where if I panned/zoomed such that one or more of the source layers weren't in the current extents, the map draw fails.

Sample was tested with built-in openlayers viewer (which is great!)

[cnieman]

sample

[cnieman]

the two layers in the sample

[tamas]

Fixed the issue in r11635 .

[cnieman]

Recompiled from SVN (r11638), and still seeing more-or-less the same behaviour, except now it looks like as long as the first layer (i.e. the one that shows up first in the mapfile) appears within the extents, it works properly.

[tamas]

What is the problem exacly? I've set up the data here and seems to be working correctly:

​http://www.gisinternals.com/union/mapserv.exe?map=union-problem.map&mode=browse&template=openlayers

[cnieman]

Interesting, it does seem to work correctly on yours. For me with my most recent compilation of the code, panning the map to the right past the grey dot in the middle caused the map draw to fail. I'll try rebuilding again tomorrow and see if maybe something was lingering around. Closing again.

[cnieman]

OK. Will leave it to you to reopen or not, but here's with my most recent recompilation of the code using svn r11642:

​http://50.19.20.140:8080/cgi-bin/mapserv?map=union-problem.map&mode=browse&template=openlayers

mapserver debug log: ​http://50.19.20.140:8080/err.txt

apache error_log: ​http://50.19.20.140:8080/error_log

[cnieman]

Had an "aha" moment and tried recompiling without cairo support. It now works fine.