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[SIITBX-300] Skip using mosaic if there is only a single tile #43

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[SIITBX-300] Skip using mosaic if there is only a single tile #43

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15 changes: 12 additions & 3 deletions s2tbx-jp2-reader/src/main/java/org/esa/s2tbx/dataio/jp2/internal/JP2MultiLevelSource.java
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Original file line number Diff line number Diff line change
Expand Up @@ -24,12 +24,18 @@
import org.esa.snap.core.datamodel.GeoCoding;
import org.esa.snap.core.datamodel.Product;

import javax.media.jai.*;
import javax.media.jai.BorderExtender;
import javax.media.jai.ImageLayout;
import javax.media.jai.Interpolation;
import javax.media.jai.JAI;
import javax.media.jai.PlanarImage;
import javax.media.jai.RenderedOp;
import javax.media.jai.operator.BorderDescriptor;
import javax.media.jai.operator.ConstantDescriptor;
import javax.media.jai.operator.MosaicDescriptor;
import javax.media.jai.operator.TranslateDescriptor;
import java.awt.*;
import java.awt.Rectangle;
import java.awt.RenderingHints;
import java.awt.image.RenderedImage;
import java.io.IOException;
import java.nio.file.Path;
Expand Down Expand Up @@ -134,6 +140,9 @@ protected RenderedImage createImage(int level) {
logger.warning("No tile images for mosaic");
return null;
}
if (tileImages.size() == 1) {
return tileImages.get(0);
}

ImageLayout imageLayout = new ImageLayout();
imageLayout.setMinX(0);
Expand All @@ -143,7 +152,7 @@ protected RenderedImage createImage(int level) {
imageLayout.setTileGridXOffset(0);
imageLayout.setTileGridYOffset(0);

RenderedOp mosaicOp = MosaicDescriptor.create(tileImages.toArray(new RenderedImage[tileImages.size()]),
RenderedOp mosaicOp = MosaicDescriptor.create(tileImages.toArray(new RenderedImage[0]),
MosaicDescriptor.MOSAIC_TYPE_OVERLAY,
null, null, null, null,
new RenderingHints(JAI.KEY_IMAGE_LAYOUT, imageLayout));
Expand Down