All coverage formats using RasterLayerRequest break if the
destinationToSourceTransform is an affine transform
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Key: GEOT-3704
URL: https://jira.codehaus.org/browse/GEOT-3704
Project: GeoTools
Issue Type: Bug
Reporter: Andrea Aime
Assignee: Daniele Romagnoli
This is happening because the code calls:
requestedGridToWorld.preConcatenate((AffineTransform)
destinationToSourceTransform);
However the requestedGridToWorld is a XAffineTransform on which the source
coverage is defined and it's marked as immutable, calling preConcatenate on it
will result in:
{code}
Caused by: java.lang.UnsupportedOperationException: This affine transform is
unmodifiable.
at
org.geotools.referencing.operation.matrix.XAffineTransform.checkPermission(XAffineTransform.java:88)
at
org.geotools.referencing.operation.transform.AffineTransform2D.checkPermission(AffineTransform2D.java:94)
at
org.geotools.referencing.operation.matrix.XAffineTransform.preConcatenate(XAffineTransform.java:225)
at
org.geotools.gce.imagemosaic.RasterLayerRequest.inspectCoordinateReferenceSystems(RasterLayerRequest.java:779)
at
org.geotools.gce.imagemosaic.RasterLayerRequest.computeRequestSpatialElements(RasterLayerRequest.java:969)
at
org.geotools.gce.imagemosaic.RasterLayerRequest.prepare(RasterLayerRequest.java:748)
at
org.geotools.gce.imagemosaic.RasterLayerRequest.<init>(RasterLayerRequest.java:241)
at
org.geotools.gce.imagemosaic.RasterManager.read(RasterManager.java:330)
at
org.geotools.gce.imagemosaic.ImageMosaicReader.read(ImageMosaicReader.java:625)
{code}
I suggest the code to be modified so that requestedGridToWorld is built as a
AffineTransform copy of the coverage affine transform, this will allow the
pre-concatenation to work
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