Martin Davis created GEOS-5051:
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Summary: Predefined Env variables should reflect actual image size
when metatiling is used
Key: GEOS-5051
URL: https://jira.codehaus.org/browse/GEOS-5051
Project: GeoServer
Issue Type: Bug
Components: WMS
Affects Versions: 2.2-beta1
Reporter: Martin Davis
Assignee: Andrea Aime
Currently the predefined Env variables wms_width and wms_height provide the
size of the requested image. When metatiling is being used, the rendering
system is actually generating an image which is larger than the requested size.
This inconsistency causes problems with some kinds of rendering
transformations (in particular, ones whose behaviour is sensitive to the output
image size).
The current code is at line 450 in GetMap.java. The fix is presumably to set
these variables to be the actual metatile size. Or, if it is actually useful
to be able to determine the output image size, should there be two new
variables which provide the rendered image size?
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