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** [bugs:#507] GeoImage and high zoom level**
**Status:** open
**Milestone:** OJ_future
**Created:** Mon Oct 12, 2020 05:27 PM UTC by michael michaud
**Last Updated:** Mon Oct 12, 2020 05:27 PM UTC
**Owner:** nobody
There are two problems in GeoImage.paint when using very high level of zoom :
- the image to display is computed with jai transformations like scaling,
subsampling or cropping which use float parameters : at very high levels of
zoom, the lower right corner of the image is not displayed at its right
position compared with vector data which use doubles for transformations. I
tried to replace jai transformations usinf floats by other transformations
using doubles (like jai affine transform), but it is much slower. It seems that
current implementation efficiency is for a large part related to the use of
subsample jai transformation which is way faster than other type of scaling,
but which use float parameters.
- the second point, maybe related to the previous one is that zooming finally
ends with an exception :
Caused by: java.lang.IllegalArgumentException: Crop The rectangular crop area
must not be outside the image.
at javax.media.jai.JAI.createNS(JAI.java:1087)
at javax.media.jai.JAI.create(JAI.java:973)
at
com.vividsolutions.jump.workbench.imagery.geoimg.GeoImage.paint(GeoImage.java:298)
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