support parametrization of KML lookAt properties
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Key: GEOS-4308
URL: http://jira.codehaus.org/browse/GEOS-4308
Project: GeoServer
Issue Type: New Feature
Components: WMS
Affects Versions: 2.1-RC1
Reporter: Gabriel Roldán
Assignee: Gabriel Roldán
Fix For: 2.1-RC2
When requesting a Map in KML format, there is no way to customize the [lookAt|http://code.google.com/apis/kml/documentation/kmlreference.html#lookat] options.
Though GeoServer does a pretty good job at figuring out the required view area and distance to earth, there's the [need for more flexibility|http://getsatisfaction.com/opengeo/topics/lookat_in_kmz\].
FORMAT_OPTIONS will be enhanced in order to support parametrization of KML lookAt with the following parameters:
- BBOX:<xmin,ymin,xmax,ymax>
- LOOKAT:<Geometry WKT>
- ALTITUDE:: Double
- HEADING: Double
- TILT: Double
- RANGE: Double
- ALTITUDEMODE: String literal. One of <clampToGround|relativeToGround|absolute>
All of them are optional. BBOX and LOOKAT are mutually exclusive, and BBOX takes precedence over LOOKAT.
Both BBOX and LOOKAT allows to define the area where the KML lookAt should be pointing at. If none is provided, GeoServer will use the aggregated lat lon bounding box of all the requested layers as it normally does.
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