[OpenLayers-Users] openlayers image layer stretch with no blur effect

[Matteo Galletti]

I use an Image Layer to draw some data at specific locations on my web
application using gwt-openlayers. Assume the original image is 400x400
pixels. Whem I zoom in the map, the image is stretched. The problem is that
the stretch effect is 'blurry'. How can I avoid this blurry effect and
instruct openlayers to apply a normal 'raw' stretch on the image? Is there
some options somewhere? When I say blurry, I mean this:

 

(see fig1.pngf in attachments)

 

The image above demonstrate the concept. I have a 400x400 pixels image. The
image is formed by 4 sub squares 200x200 pixels each. Top left square is
blue, top right is green, bottom left is yellow and bottom right is red.
When I draw this image as an image layer in openlayers and I zoom the map,
the center of the image gets blurry and the four colors are blended. Is
there a way to avoid this blur effect and have a 'raw' stretch? Thanks.

 

Here's the code (in gwt-openlayers) I use to create the image layer:

 

org.gwtopenmaps.openlayers.client.layer.ImageOptions imgOptions = new
org.gwtopenmaps.openlayers.client.layer.ImageOptions();

imgOptions.setIsBaseLayer(false);

imgOptions.setTransitionEffect(TransitionEffect.RESIZE);

imgOptions.setAlwaysInRange(true);

imgOptions.setLayerOpacity(0.7);

imgOptions.setProjection("EPSG:900913");

 

imgLayer = new org.gwtopenmaps.openlayers.client.layer.Image("my_name",
null, bounds, new Size(1, 1), imgOptions);

map.addLayer(imgLayer);

 

 

Matteo Galletti 
ELDES s.r.l.
via di Porto 2/B, 50018
Scandicci (FI) ITALY
 <mailto:m.galletti at eldes.it> m.galletti at eldes.it

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